CC Resolution 2025-022 SilverRock MND Addendum 3 EA 2025-0002RESOLUTION NO. 2025 - 022
A RESOLUTION OF THE CITY COUNCIL OF THE CITY
OF LA QUINTA, CALIFORNIA, ADOPTING ADDENDUM
NO. 3 TO THE PREVIOUSLY ADOPTED MITIGATED
NEGATIVE DECLARATION (EA 2002-453) PURSUANT
TO SECTIONS 15162 AND 15164 OF THE CALIFORNIA
ENVIRONMENTAL QUALITY ACT IN THAT NO
SUBSTANTIAL CHANGES TO THE PROJECT ARE
PROPOSED THAT RESULT IN NEW SIGNIFICANT
ENVIRONMENTAL EFFECTS
CASE NUMBER:
ENVIRONMENTAL ASSESSMENT 2025-0002
PROJECT: SILVERROCK RESORT
APPLICANT: TBE RE ACQUISITION CO II LLC.
(SUBSIDIARY OF TURNBRIDGE EQUITIES)
WHEREAS, the City Council of the City of La Quinta, California, did, on
September 22, 2025, hold a duly noticed Public Hearing to consider a request by TBE
RE Acquisition Co II LLC., subsidiary of Turnbridge Equities, for approval of a
Reinstated and Amended Development Agreement and associated documents and
agreements for the SilverRock Resort (2025 SilverRock Master Plan), relating to real
property south of Avenue 52, west of Jefferson Street, with Assessor Parcel Numbers:
APNs: 770-260-037; 776-150-029, -030; 777-060-008, -010, -011, -019, -020, -062, -
070, -071, -072, -074, -075, -078, -079, -080, -081, -082, -083, -084, -085; 777-490-023,
- 024, -035, -037, -039, -042, -046, -047, -048, -049, -050, -053, -054, -055, -057, -058, -
059, -060, -061, -062, -063, -064, -065, -066, -067, -068, -069, -070, -071, -072, -073, -
074, -075, -076, -077, -078, -079, -080; 777-510-001, -002, -003, -004, -005, -006, -007,
- 008, -009, -010, -011, -012, -013, -014, -015, -016, -017, -018, -019, -020, -021, -022, -
023, -024, -025; 777-520-001, -002, -003, -004, -005, -006, -007, -008, -009, -010, -011,
-012, -013, -014, -015, -016, -017, -018
WHEREAS, the Design and Development Department published a public hearing
notice in The Desert Sun newspaper on September 11, 2025, as prescribed by State
law and the La Quinta Municipal Code. Public hearing notices were also mailed to all
property owners within 500 feet of the site and emailed or mailed to all interested parties
who have requested notification relating to the project; and
WHEREAS, the Planning Commission of the City of La Quinta, California, did, on
September 9, 2025, hold a duly noticed Public Hearing to consider recommending to
Resolution No. 2025 — 022
SilverRock Resort — Environmental Assessment 2025-0002, Addendum No. 3 to EA 2002-453
Adopted: September 22, 2025
Page 2 of 3
the City Council approval of Addendum No. 3 to Environmental Assessment 2022-453;
and
WHEREAS, at the City Council's Public Hearing, upon hearing and considering
all testimony and arguments, if any, of all interested persons desiring to be heard, the
City Council did make the following mandatory findings pursuant to the California
Environmental Quality Act (CEQA):
1. The proposed project will not have the potential to degrade the quality of the
environment, substantially reduce the habitat of a fish or wildlife population to
drop below self-sustaining levels, threaten to eliminate a plant or animal
community, reduce the number, or restrict the range of rare or endangered plants
or animals, or eliminate important examples of the major periods of California
history or prehistory. Potential impacts can be mitigated to be less than
significant levels with the implementation of mitigation measures included in
Previous Assessments.
2. The proposed project will not result in impacts that are individually limited or
cumulatively considerable when considering planned or proposed development
in the immediate vicinity. Potential impacts can be mitigated to be less than
significant levels.
3. The proposed project will not have environmental effects that will adversely affect
the human population, either directly or indirectly. Potential impacts are
equivalent to or less than those identified in Previous Assessments, and with the
implementation of mitigation measures included in those Previous Assessments,
can be mitigated to be less than significant.
NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of
La Quinta, California, as follows:
SECTION 1. That the above recitations are true and constitute the Findings of the City
Council in this case.
SECTION 2. That the City Council has reviewed and considered the Addendum, and
finds that the Addendum is an accurate and objective statement that has been
completed in full compliance with CEQA, the State CEQA Guidelines, and the City's
Local CEQA Guidelines and reflects the independent judgment and analysis of the City
Council.
SECTION 3. That the City Council hereby adopts Addendum No. 3 to EA 2002-453,
attached to this Resolution as Exhibit A.
SECTION 4. That the documents and materials that constitute the record of
proceedings on which this Resolution has been based are located at La Quinta City
Resolution No. 2025 — 022
SilverRock Resort — Environmental Assessment 2025-0002, Addendum No. 3 to EA 2002-453
Adopted: September 22, 2025
Page 3 of 3
Hall, 78-495 Calle Tampico, La Quinta, CA 92253. The custodian for these records is
the City Clerk of the City of La Quinta or designee. This information is provided in
compliance with Public Resources Code Section 21081.6(a)(2).
PASSED, APPROVED, and ADOPTED at a special meeting of the La Quinta
City Council held on September 22, 2025, by the following vote:
AYES: Councilmembers Fitzpatrick, McGarrey, Pena, Sanchez, and Mayor
Evans
NOES: None
ABSENT: None
ABSTAIN: None
INDA EVANS, ayor
City of La Quinta, California
ATTEST:
MONIKA RADEVA, pity Clerk
City of La Quinta, California
APPROVED AS TO FORM:
WILLIAM H.-IHRKE, City Attorney
City of La Quinta, California
RESOLUTION NO. 2025-022
EXHIBIT A
Adopted: September 22, 2025
Addendum to the
ADOPTED
MITIGATED NEGATIVE DECLARATION
SILVERROCK RESORT PROJECT
LA QU I NTA, CALIFORNIA
Prepared for:
City of La Quinta
78-495 Calle Tampico
La Quinta, California 92253
Meridian
Consultants
860 Hampshire Road, Suite P
Westlake Village, CA 91361
www.meridianconsultantsllc.com
SEPTEMBER 2025
TABLE OF CONTENTS
Section
Page
Table of Contents
1.0 Introduction 1.0-3
1.1 Prior Environmental review 1.0-3
1.2 Previous Approvals 1.0-5
1.3 Proposed 2025 SilverRock Resort Master Plan 1.0-5
1.4 Purpose of an Addendum 1.0-6
2.0 Project Description 2.0-1
2.1 Project Location 2.0-1
2.2 Project Site Conditions 2.0-1
2.3 Project Characteristics 2.0-2
3.0 Impact Analysis 3.0-1
3.1 Land Use and Planning 3.0-2
3.2 Population and Housing 3.0-7
3.3 Geology And Soils 3.0-9
3.4 Water 3.0-14
3.5 Air Quality 3.0-18
3.6 Transportation / Circulation 3.0-28
3.7 Biological Resources 3.0-32
3.8 Energy and Mineral Resources 3.0-38
3.9 Hazards and Hazardous Materials 3.0-40
3.10 Noise 3.0-44
3.11 Public Services 3.0-48
3.12 Utilities and Service Systems 3.0-54
3.13 Aesthetics 3.0-61
3.14 Cultural Resources 3.0-66
3.15 Recreation 3.0-69
3.16 Greenhouse Gases 3.0-71
4.0 References 4.0-1
5.0 Mitigation Monitoring Program 5.0-1
Appendices
A Air Quality and Greenhouse Gas Emissions Outputs
Meridian Consultants i SilverRock Resort Project Addendum
September 2025
LIST OF FIGURES
Figure Page
1-1 2018 SilverRock Resort Master Plan 1.0-7
2-1 Regional Location Map 2.0-3
2-2 Project Location 2.0-4
2-3 Project Site Aerial Photographs 2.0-5
2-4 2025 SilverRock Master Plan 2.0-9
3.1-1 General Plan Land Use Map 3.0-4
3.1-2 Zoning Map 3.0-5
LIST OF TABLES
Table Page
2-1 Partially Constructed Buildings 2.0-2
2-2 Comparative Land Use Summary: Prior Environmental Reviews and the 2025
SilverRock Master Plan 2.0-6
2-3 2018 SilverRock Resort Master Plan Land Use Summary 2.0-7
2-4 2025 SilverRock Master Plan Summary 2.0-8
3.5-1 Project Construction Schedule 3.0-23
3.5-2 Highest Daily Construction Pollutant Emissions 3.0-24
3.5-3 Operational Emissions 3.0-25
3.5-4 Localized Construction and OPerational Emissions 3.0-26
3.6-1 SilverRock Trip Generation Comparison: 2018 vs. 2025 Master Plan 3.0-30
3.11-1 School District Generation Rates and STudent Generation 3.0-52
3.11-2 Project School Enrollment and Capacities 3.0-52
3.16-1 Construction GreenHouse Gas Emissions 3.0-74
3.16-2 Operational GHG Emissions 3.0-76
Meridian Consultants 11 SilverRock Resort Project Addendum
September 2025
1.0 INTRODUCTION
This Addendum has been prepared to analyze the potential environmental effects associated with
the proposed approval of agreements to implement the approved SilverRock Resort Project (SRR
Project or Project). The City of La Quinta (City) is proposing to approve a Reinstated and Amended
Development Agreement, an Option Agreement for the Phase 2 Land, a Transient Occupancy Tax
revenue sharing agreement, and ancillary agreements or amendments to recorded covenants. The
first phase of development currently proposed includes a 154-room Luxury Resort Hotel with
supporting facilities, 192 single-family and condominium resort residential units and a new
clubhouse for the existing public golf course in Planning Areas 2-7. Subsequently, approval of Site
Development Permits (SDPs), amendments to previously approved SDPs, subdivision maps and
other implementing approvals, will be requested to develop the 2025 SilverRock Master Plan Project
(2025 Project; Project), which would allow the development of resort, recreational,
retail/commercial, and residential uses as permitted by the SilverRock Resort Specific Plan as
approved by the City for the SilverRock Resort site.
1.1 PRIOR ENVIRONMENTAL REVIEW
The SilverRock Resort Project has been reviewed by the City of La Quinta in a series of environmental
review documents prepared since 2002, including a 2002 Mitigated Negative Declaration (MND), and
Addenda to the Adopted MND in 2006 and 2014 (Previous Assessments). Background information on
these Previous Assessments and approvals is presented below.
1.1.1 2002 Mitigated Negative Declaration (2002 MND)
In 2002, an Environmental Assessment (EA 2002-453) was prepared supporting the adoption of a
Mitigated Negative Declaration (2002 MND) evaluating the acquisition of the 707-acre SilverRock
Resort site by the City of La Quinta Redevelopment Agency. The site was acquired to meet the City's
goals of providing public recreation and generating recurring revenue by facilitating resort -oriented
development. The 2002 MND evaluated a master development plan that included two 18-hole public
golf courses, a hotel with a conference center, a clubhouse, timeshare or condo -hotel units, and
supporting commercial uses. Approximately 160 acres of the western portion of the site within the
Santa Rosa Mountains were identified for permanent preservation as open space. Following the
adoption of the 2002 MND, the City constructed and opened the Arnold Palmer Classic Golf Course
in 2005 on approximately 173 acres of the site.
I.I.z 200b Addendum
In 2006, the City of La Quinta approved the SilverRock Resort Specific Plan to guide the phased
development of approximately 546 acres of the SilverRock site with resort uses. An Addendum to the
2002 MND (2006 Addendum) was prepared to evaluate the proposed Specific Plan.
Meridian Consultants
1.0-3
SilverRock Resort Project Addendum
September 2025
1.0—Introduction
The Specific Plan was prepared by the City to ensure quality development consistent with the goals,
objectives, and policies of the City's General Plan. The Specific Plan defines the location, type, and
amount of development allowed within the Specific Plan Area, while providing a degree of flexibility
to allow future development to respond to the opportunities in the marketplace for a unique resort
development.
The Specific Plan established a land use framework by establishing eight Planning Areas (PAs) to
guide the development of a master -planned resort community with two public golf courses, multiple
hotels (including boutique and conference hotels), residential units, a mixed -use retail village, and
supporting amenities as identified in Table 2-2. The plan included design and development
standards aligned with the City's General Plan and excluded the previously preserved 160-acre
portion of the Santa Rosa Mountains.
The approved Specific Plan allows minor modifications without a Specific Plan amendment as
follows:
• The addition of new information to the Specific Plan maps or text that do not change the effect of
any regulation. The new information may include more detailed, site -specific information. If this
information demonstrates that Planning Area boundaries are inaccurately designated, based
upon the goals of the Specific Plan, said boundaries may be adjusted or redesignated to reflect
a more accurate depiction of on -site conditions without requiring a Specific Plan Amendment.
Adjustments to the golf corridors may be made, resulting in a corresponding change to the
adjacent development parcel, without the requirement of a Specific Plan Amendment.
• Changes to the community infrastructure, such as drainage systems, roads, water, and sewer
systems, etc., which do not have the effect of increasing or decreasing capacity in the project
area beyond the specified density range nor increase the backbone infrastructure construction
or maintenance costs.1
The 2006 Addendum concluded that the proposed Specific Plan would not result in any new or
substantially more significant impacts than were identified in the Adopted 2002 MND.
2014 i aaenaum
In 2014, the City of La Quinta prepared a second Addendum to the 2002 Mitigated Negative
Declaration (2014 Addendum) to evaluate a refined master plan for the SilverRock Resort project in
response to evolving market conditions and support the approval of a series of agreements to
implement the project, including a Development Agreement (DA) and a Purchase, Sale, and
Development Agreement (PSDA) pursuant to California Government Code Section 65864 with a
master developer for development of resort, recreational, retail/ commercial, and residential uses
as permitted by the Specific Plan.
1 City of La Quinta, SilverRock Resort Specific Plan (2006), 51.
Meridian Consultants
1.0-4
SilverRock Resort Project Addendum
September 2025
1.0—Introduction
The 2014 Master Plan as evaluated in the Addendum included a hotel, spa, banquet room, residential
units, commercial/retail space, a golf clubhouse, and an additional 18-hole golf course As
summarized in Table 2-2. The 2014 Addendum concluded that the proposed Specific Plan would not
result in any new or substantially more significant impacts than were identified in the Adopted 2002
MND.
1.2 PREVIOUS APPROVALS
In 2006, the City of La Quinta approved the SilverRock Resort Specific Plan to guide the phased
development of the approximate 546 acre the SilverRock site. An Addendum to the 2002 MND (2006
Addendum) was prepared to evaluate the proposed Specific Plan. The 2014 DA, PDSA and
amendments to the PSDA allowed development in Planning Areas 2 to 9 as defined in the approved
Specific Plan. The PSDA and subsequent amendments addressed financing, construction timelines,
performance schedules, and financial incentives for the phased construction of luxury hotels,
branded residences, golf villas, a new golf clubhouse, a conference center, and related
infrastructure. PSDA Amendment No. 3, November 2018, amended and restated key terms of the
original PSDA between the City and the Developer and included an updated master plan (2018
Master Plan) shown Figure 1-1: 2018 SilverRock Resort Master Plan.
A series of Site Development Permits (SDPs) approved site, architectural, and landscaping plans for
Planning Areas 2-7 as delineated in the 2025 Project in accordance with the SilverRock Specific Plan
and applicable zoning and environmental regulations. The SDPs established project conditions,
design requirements, environmental compliance measures, and public infrastructure obligations.
1.3 PROPOSED 2025 SILVERROCK RESORT MASTER
PLAN
The 2025 SilverRock Resort Master Plan, as shown below in Figure 2-4: 2025 SilverRock Master
Plan, includes hotel and resort residential uses as permitted by the SilverRock Specific Plan along
with the second 18-hole golf course and related support and amenity facilities. Development of one
hotel is now proposed with resort residential units. Overall, the 2025 SilverRock Master Plan reflects
a reduced intensity of hotel and residential development compared to the 2018 Master Plan as
shown in Table 2-2: Comparative Land Use Summary: Prior Environmental Reviews and the 2025
SilverRock Master Plan.
Meridian Consultants
1.0-5
SilverRock Resort Project Addendum
September 2025
1.0—Introduction
1.4 PURPOSE OF AN ADDENDUM
The California Environmental Quality Act (CEQA) and State CEQA Guidelines define standards and
the procedure for determining the level of additional environmental review required when an
Environmental Impact Report (EIR) has been certified or a Negative Declaration adopted for a
project.2
An Addendum to an adopted MND is appropriate where the lead agency has determined that
changes to the project, changed circumstances, or new information would not result in the
identification of new significant impacts or a substantial increase in the severity of impacts identified
in the adopted MND. An Addendum is appropriate where a lead agency has determined that none of
the conditions described in CEQA Guidelines Section 15162 call for the preparation of a subsequent
EIR or negative declaration have occurred.
Public review of an Addendum is not required by CEQA. Instead, the information in an Addendum is
to be considered with the adopted MND prior to a decision being made on actions proposed.
This Addendum provides:
1. An update to the information in the adopted MND on the existing environmental conditions under
which the SRR Project will be undertaken.
2. An analysis of the potential environmental effects of the 2025 Project as compared to the
environmental effects of the SRR Project as analyzed in the 2002 MND and prior Addenda.
An Addendum is the appropriate document to update the information in the adopted MND for the
following reasons:
1. No substantial changes are proposed to the SRR Project that will require major revisions of the
adopted MND because there are no new significant effects or any substantial increase in the
severity of previously identified significant impacts.
2. No substantial changes in circumstances under which the SRR Project will be undertaken have
been identified that will require major revisions of the adopted MND as there are no new
significant environmental effects or any substantial increase in the severity of previously
identified effects.
3. No new information of substantial importance has been discovered that was not known and
could not have been known with the exercise of reasonable diligence at the time the adopted
MND was prepared. Specifically, a review of the current existing conditions and the 2025 Project
demonstrates the following:
2 CEQA Guidelines, Sections 15162-15164.
Meridian Consultants
1.0-6
SilverRock Resort Project Addendum
September 2025
PA-2Nhite.L
r LicXeU rY'„H?C4TE,L`PARKING--0*m
PA11
PUBLIC PARIO
ARROYO
LUXURY BRANDED
RESIDENTIAL_DE_V_ELOPMENI�
\i I\l \\sir
\ I 1 IoU'
PA 2
LUXURY HOTEL/SPA
PA 1 Ve
GOLF LC URSE
LAND USE SUMMARY
LAND USE
164
•
I tall
PROMENADE MIXED.US
VILLAGE AREA IIA�
ACRES UNITS
1 Golf Course (Existing) 179.0
2 Luxury Hotel 20.5 140
3 Luxury Branded Residential Development 14.0 35
4 Conference and Shared Service Facility 7.5
5 Lifestyle Hotel 10.5 200
6 Lifestyle Branded Residential Development 10.0 66
7 Promenade Mixed Use Village Area I 10.5 150
8 Resort Residential Village 22.5 160
9 Promenade Mixed Use Village Area II 15.0 80
10A-1 Golf Clubhouse & Golf Course 51.5 25
10A-2 Residential 13.5 46
10A-3 Residential 5.0 23
10B-1 Golf Course 62.0 40
10B-2 Residential 5.5 19
10B-3 Residential 4.5 20
1OB-4 Residential 7.0 34
1OB-5 Residential 5.5 22
10B-6 Residential 5.5 24
11 Public Park 22.0
12 Arroyo, Trails, Canal & Streets 53.5
TOTAL 525.0 1084
PA 10A-2
RESIDENTIAL
or;
v •
•CONFERENCE AND
I SHARED.SERVICE FACILITY
�* PA 5
PA 4I
LIFESTYLE HOTEL
PA 10A-1
GOLF CLUBHOUSE •��
& GOLF COURS,EL�
1." LIFE TI1!E' BRANDED
RESIDENTISL DIVEL'-OPME
PA 10B-3' •
_RESIDENTIA
PA 10B-2 11
RESIDENTIA
RIS. I:I
PA Ill
PA.10B-5
LRESIDENTIA
PA 10B-1�
GOLF COtI E
GOL•I }y
ALAI ' TENNANNA
PA 10A-3
RESIDENTIA
AVI:NU[ -4
4
SOURCE: The Robert Green Company — November 29, 2016
FIGURE 1-1
IV$eridian
Consultants
2018 SilverRock Resort Master Plan
453-001-25
1.0—Introduction
a. The 2025 Project will not have one or more significant effects not discussed in the adopted
MND.
b. Significant effects previously examined will not be substantially more severe than shown in
the adopted MND.
c. No new mitigation measures or alternatives have been found to be feasible that would
reduce one or more significant effects of the Specific Plan.
d. No new mitigation measures or alternatives, considerably different from those analyzed in
the adopted MND, have been identified that the Project proponents decline to adopt.
Meridian Consultants
1.0-8
SilverRock Resort Project Addendum
September 2025
2.0 PROJECT DESCRIPTION
2.1 PROJECT LOCATION
The SilverRock Project Site (SRR Project Site or Project Site) is located within the City of La Quinta in the
County of Riverside (County). The City of La Quinta (City) is located in the southeastern portion of the
Coachella Valley, approximately 105 miles from the City of Los Angeles and approximately 240 miles
from the Phoenix -Scottsdale metropolitan region. The City is bordered by unincorporated County
areas to the north and east and by the Santa Rosa and San Jacinto Mountains to the southwest and
west. As shown in Figure 2-1: Regional Location Map, surrounding jurisdictions include
unincorporated County areas to the north and east, the City of Palm Desert and the City of Indian
Wells to the northwest, and the City of Indio and the City of Coachella to the northeast.
As shown in Figure 2-2: Project Location, the Project Site is located in the central portion of the City,
bounded by Avenue 52 to the north, Jefferson Street to the east, Avenue 54 on the south, and the
Santa Rosa Mountains on the west; and is accessible from Interstate 10 via Washington and Jefferson
Streets. The Coachella Canal traverses west through the Project site from Jefferson Street and turns
south within the Project Site.
Uses surrounding the Project Site include golf courses, residential communities, and natural open
space areas. The Citrus Club at PGA West golf course and residential community is north of Avenue
52; the Mountain View Country Club golf course and residential community is north of Avenue 52 and
east of Jefferson Street; the Hideaway golf club and residential community is east of Jefferson Street;
the PGA West golf course and residential community is south of the Project Site and to the south of
Avenue 54; and the Santa Rosa Mountains are to the west.
2.2 PROJECT SITE CONDITIONS
The Project Site consists of areas that have been previously graded, developed, or partially developed
as shown in Figure 2-3: Project Site Aerial Photograph. The eastern portion of the site contains
previously graded development pads. SilverRock Park is located in the northwest; the Arnold Palmer
Classic Golf Course, Ahmanson House, a series of partially constructed buildings associated with
the previous approvals are located in the western portion of the site; and a Bighorn sheep exclusion
fence has been completed along the toe -of -slope of the Santa Rosa Mountains.
Utilities have been constructed to support development of the uses allowed by the approved
Specific Plan. Water to the Specific Plan area is provided through an existing 18-inch water main in
SilverRock Way. An 18-inch main line is located adjacent to the Project Site in Jefferson Street and
there are two (2) water well sites and a pressure reducing/boosting station. A storm drain in Avenue
52 is designed to convey stormwater to the planned location of the second golf course on the Project
Site along Avenue 52 and Jefferson Street. The partially constructed buildings include a conference
center/shared services facility, golf clubhouse, hotel, spa, guest rooms, and branded residential
Meridian Consultants
2.0-1
SilverRock Resort Project Addendum
September 2025
2.0—Project Description
units. These partially constructed buildings are proposed to either be reused, relocated, or
demolished as part of the Project as identified in Table 2-1: Partially Constructed Buildings. For
purposes of environmental analysis in this Addendum and to provide a conservative analysis for the
2025 Project, demolition of the partially constructed buildings is assumed.
TABLE 2-1: PARTIALLY CONSTRUCTED BUILDINGS
Building
Square Feet (SF)
Percent Completion -
Building
Percent Completion -
Mechanical, Electrical
and Plumbing (MEP)
Planned Use in
Proposed Project
Conference
Center/Shared
Service Facility
Golf Clubhouse
Hotel Buildings
Hotel Spa
Hotel Guest Rooms
Hotel Branded
Residences
81,022
14,550
26,321
16,716
91,045
149,908
Source: Turnbridge Equities. 2025.
60
75
60
45
45
30
2.3 PROJECT CHARACTERISTICS
45 Demolish/Reuse
75 Demolish and
relocate/rebuild
55 Demolish/Reuse
40 Demolish and
relocate/rebuild
40 Demolish/Reuse
25 Demolish and
relocate/rebuild
The 2025 SilverRock Master Plan reconfigures the planned hotel, resort residential, commercial, golf
course and related ancillary support uses to complement the existing public golf course and related
public facilities on the Project Site as shown in Figure 2-4: 2025 SilverRock Master Plan.
The 2025 Project is consistent with the SilverRock Specific Plan as approved by the City in 2006. As
shown Table 2-2: Comparative Land Use Summary: Prior Environmental Reviews and the 2025
SilverRock Master Plan, the amount of development planned is consistent with, and less intensive,
than the SRR Project as defined and analyzed in the City's prior environmental review documents.
Meridian Consultants
2.0-2 SilverRock Resort Project Addendum
September 2025
Legend
Project Site
0 0.75 1.5
APPROXIMATE SCALE IN MILES
SOURCE: City of La Quinta — 2025
i■
.111
fr
nu
OF IP
FIGURE 2-1
Meridian
(nnsultari/
Regional Location
453-001-25
SOURCE: City of La Quinta — 2025
FIGURE 2-2
Meridian
(nnsultari/
Project Location
453-001-25
2.0—Project Description
FIGURE 2-3: PROJECT SITE AERIAL PHOTOGRAPHS
I`Branded Luxury
Meridian Consultants
2.0-5 Addendum to the SilverRock Resort Project
September 2025
2.0—Project Description
TABLE 2-2: COMPARATIVE LAND USE SUMMARY: PRIOR ENVIRONMENTAL REVIEWS AND THE 2025 SILVERROCK MASTER PLAN
2002 MND
Site Acquisition
2006 Addendum
Specific Plan
2014 Addendum
Master Plan
2018 Master Plan
2025 Master Plan
Development
Summary
Hotel/ Residential Units/Keys: 550
Commercial: 25,000 SF
Conference/Event Facilities: 10,000 SF
Golf Holes: 45
Hotel/ Residential Units/Keys:
1,135/1,360
Commercial: 160,000 SF
Conference/Event Facilities: 10,000 SF
Golf Holes: 36
New Clubhouse for Public Course
Hotel/ Residential Units/Keys: 850
Commercial: 35,000 SF
Conference/Shared Facilities: 71,000 SF
Golf Holes: 36
New Clubhouse for Public Course
Hotel/ Residential Units/Keys: 1,084
Commercial: 40,000 SF
Conference/Shared Facilities: 71,000 SF
Golf Holes: 27
New Clubhouse for Public Course
Hotel/ Residential Units/Keys: 599
Commercial40,000 SF
Banquet/Shared Facilities: 55,000 SF
Golf Holes: 36
New Clubhouse for Public Course
Planning Areas
N/A
8 Planning Areas (PA 1-8)
12 Planning Areas (PA 1-12)
12 Planning Areas (PA 1-12)
8 Planning Areas (PA 1-8)
Golf Facilities
Two 18-hole Golf Courses
One 9-hole Golf Course
Two 18-Hole Golf Courses
PA 1: Arnold Palmer Classic Course
PA 10: Second 18-Hole Golf Course
Two 18-Hole Golf Courses
PA 1: Arnold Palmer Classic Course
PA 10: Second 18-Hole Golf Course
Two 18-Hole Golf Courses
PA 1: Arnold Palmer Classic Course
PA 10: Second 9-Hole Golf Course
Two 18-Hole Golf Courses
PA 1: Arnold Palmer Classic Course
PA 8: Second 18-Hole Golf Course
Units - Hotel Rooms /
Keys or Residential
Units
Hotel (250 Units)
Condominium Hotel Units (250 Units)
PA 2: Boutique Hotel (200 Units / 260
Keys)
PA 4: Resort Hotel (405 Units / 520 Keys)
PA 6: Lifestyle Hotel (450 Units / 500
Keys)
PA 2: Luxury Hotel (140 Keys)
PA 5: Lifestyle Hotel (200 Keys)
PA 3: 35 Branded Residences
PA 6: 60 Branded Residential Units
PA 7-10a: 415 Resort Residential Units
PA 2: Luxury Hotel (140 Keys)
PA 5: Lifestyle Hotel (200 Keys)
PA 3: 35 Branded Residences
PA 6: 66 Branded Residential Units
PA 7-10B-6: 643 Resort Residential Units
PA 3: Luxury Hotel (154 Keys)
PA 2: 29 Branded Residences
PA 6: 70 Branded Residential Condos
PA 7: 93 Branded Residences
PA 8: 253 Residential Units
Commercial
25,000 SF
PA 5 and Hotels: 160,000 SF
PA 7 and PA 9: 35,000 SF
PA 7 and PA 9: 40,000 SF
PA 8: 40,000 SF
Conference/Event
Facilities
10,000 SF Conference Center
10,000 SF Conference Center
PA 4: 71,000 SF Ballroom Meeting Space,
Food Service, Back Of House
PA 4: 71,000 SF Ballroom Meeting Space,
Food Service, Back Of House
PA 5: 55,000 SF Banquet Meeting Space, Food
Service, Back Of House
Ahmanson House
Civic/Cultural and Restaurant Use
PA 2: 10,000 SF Civic/Cultural
300 Seat Restaurant
80 Boutique Guest Rooms
PA 2: 7,500 SF Restaurant
1,500 SF Storage Building
PA 2: 7,500 SF Restaurant
PA 3: 7,500 SF Restaurant
Meridian Consultants
2.0-6
Addendum to the SilverRock Resort Project
September 2025
2.0—Project Description
PSDA Amendment No. 3, dated November 28, 2018, amended and restated key terms of the original
PSDA between the City and the developer, and implemented a revised development framework. The
land uses permitted under this revised framework are reflected in the 2018 Master Plan, which
represents the most current land use plan for the Project. A summary of the 2018 Master Plan is shown
below in Table 2-3: 2018 SilverRock Resort Master Plan Land Use Summary.
TABLE 2-3: 2018 SILVERROCK RESORT MASTER PLAN LAND USE SUMMARY
PA
Land Use
Acres
Units
1
2
3
4
5
6
7
8
9
10A-1
10A-2
10A-3
10B-1
10B-2
10B-3
10B-4
10B-5
10B-6
Golf Course (Existing)
Luxury Hotel
Luxury Branded residential Development
Conference and Shared Service Facility
Lifestyle Hotel
Lifestyle Branded Residential Development
Promenade Mixed Use Village Area I
Resort Residential Village
Promenade Mixed Use Village Area 11
Golf Clubhouse & Golf Course
Residential
Residential
Golf Course
Residential
Residential
Residential
Residential
Residential
179.0
20.5
14.0
7.5
10.5
10.0
10.5
22.5
15.0
51.5
13.5
6.0
62.0
5.5
4.5
7.0
5.5
5.5
140
35
200
66
150
160
80
25
46
23
40
19
20
34
22
24
Subtotal of PA 10
Residential 253
11
12
TOTAL
Public Park
Arroyo, Trails, Canal & Streets
22.0
53.5
525.0
1,084
Table 2-4: 2025 SilverRock Master Plan Summary provides an overview of the development
included in the 2025 Project. PAs 1, 11 and 12 are City owned land, and as shown in Table 2-3, are
proposed for recreational use. PAs 9 and 10 in the 2018 Master Plan included resort residential units
and commercial space. The intensity of residential units and commercial space is reduced in the
2025 Project and PAs 9 and 10 were combined into PA 8 in the 2025 Project, as shown in Table 2-2.
The 2025 Project includes a revised development program for the first phase of the Project. This first
phase includes the development of a 154-room Luxury Resort Hotel with supporting facilities, 192
single-family and condominium resort residential units and a new clubhouse for the existing public
golf course in PAs 2-7. The 2025 Project reduces the intensity of development in these planning areas
compared to the 2018 Master Plan.
The second phase includes the future development of an 18-hole private golf course, 253 resort
residential units and 40,000 square feet of commercial development in PA 8. This second phase of
Meridian Consultants
2.0-7 Addendum to the SilverRock Resort Project
September 2025
2.0—Project Description
development is the same as the development planned in this portion of the Project Site in the second
phase of the 2018 Master Plan.
TABLE 2-4: 2025 SILVERROCK MASTER PLAN SUMMARY
Planning Area (PA)
Re -Use
of Hotel Square
Existing Rooms Footage
(SF)
Acres
Residential Golf
Lots/Condos Holes
Notes
Golf Course
1 improvements
(existing)
2 Residential Lots
3 Hotel
Hotel Lobby
Restaurants/Bars
Retail
Spa
Wellness
Fitness
Pools
4 Golf Clubhouse
5 Banquet (part of
hotel)
Back of House
5 (BOH) (part of
hotel)
6 Residential
Condos
6 Residential
Amenities
7 Residential Lots
8 Residential
8 Golf Course
8 Commercial
154
250,000
17,000
25,000
30,000
273,000
20,000
40,000
161.0
13.4
22.6
- 1.3 (spa)
- 0.5
(retail,
restaurant,
bar)
3.7
8.7
18.3
68.0
200.0
29
70
93
253
18
18
Clubhouse
building
18-holes
private
Total
50,000 154 629,500 498 599 36
Meridian Consultants
2.0-8 SilverRock Resort Project Addendum
September 2025
PA1 -Golf Course
(existing)
PA2 - luxury Branded Residences
(29 tots)
PA3 - Luxury Hotel
(154 guest rooms, lobby.
restaurants. retail, spa. wellness.
amenities. BOH, etc. totaling
250,O00sf)
ra•
Phew 1
f•
• I Phew 2
ea ml"
PM - Public Golf Clubhouse
(17,000sf)
PAS - Luxury Hotel Banquet 8
Beck of House Functions
(Banquet: 25.000sf)
(BOH: 30,000sf)
PA6 - luxury Branded Condominiums
(70 units)
Resident Clubhouse 8 Facilities
(20,000sf)
PA7 - Luxury Branded Residences
(93 lots)
PA8 - Future Golf. Residential,
and Commercial
(18-hole private golf course, 253
res►dential units. and 40.000sf
commercial)
SOURCE: Turnbridge Equities, 2025
FIGURE 2-4
Meridian
Consultants
2025 SilverRock Master Plan
453-001-25
2.0—Project Description
Further description of the development proposed in each Planning Area is provided below.
Planning Area
Planning Area 1 includes the existing 173-acre Arnold Palmer Classic Golf Course and golf course
maintenance facility site. The Project proposes to upgrade the existing golf course and realign a
portion of SilverRock Way adjacent to the proposed public golf clubhouse in Planning Area 4 (PA 4).
The southern segment of SilverRock Way would be removed to allow clubhouse guests to access the
golf course directly without crossing a vehicular roadway. To maintain circulation, the Project would
extend Ahmanson Way between PA 4 and PA 5 to connect with the northern segment of SilverRock
Way.
Planning Area 2
In Planning Area 2 the re -use or demolition of the partially constructed homes is proposed to allow
the development of 29 luxury branded resort residences, each with four to five bedrooms and ranging
from approximately 4,000 to 6,000 square feet in size. These residences will be privately owned but
maintain a direct affiliation with the adjacent luxury hotel. The hotel owner and future residential
owner(s) will have the option to make their units available for short-term vacation rental through a
hotel -managed rental program. The purchase and sale agreement and property covenants would
require that all rentals must be managed through the hotel reservation system, subject to applicable
laws.
Planning Area 3
In Planning Area 3, the re -use or demolition of the partially constructed hotel buildings is proposed
to allow the development of a 154-unit luxury hotel, with approximately 250,000 SF of total space.
The existing Ahmanson House property is intended to be renovated for use as a restaurant or other
hotel amenity, consistent with the existing project approvals. The luxury hotel would use the new
Back of House and Banquet facilities in Planning Area 5.
Planning Area 4
In Planning Area 4, development of a new approximately 17,000 SF golf clubhouse is proposed to
serve the golf course(s) on the Project Site. It will replace the partially constructed golf clubhouse
currently occurring in Planning Area 8 (see below).
Planning Area 5
In Planning Area 5, the partially constructed one-story 81,000 SF conference/shared services
buildings would be demolished to allow for the development of a 25,000 SF banquet facility and a
30,000 SF back of house (BOH) facility.
Meridian Consultants
2.0-1 0 Addendum to the SilverRock Resort Project
September 2025
2.0—Project Description
Manning Area b
In Planning Area 6 the demolition of the partially constructed public golf clubhouse is proposed to
allow for the development of 70 luxury branded resort condominium units, each with two to five
bedrooms, and ranging from approximately 2,000 to 4,000 SF in size. Development in this Planning
Area would also include an approximately 20,000-SF clubhouse building that would provide
amenities for residents along with other amenities like pools, tennis, pickleball, and padel, among
others. These residences will be privately owned but maintain a direct affiliation with the adjacent
luxury hotel. The hotel owner and future residential owners will have the option to make their units
available for short-term vacation rental through a hotel -managed rental program. The purchase and
sale agreement and property covenants would require that all rentals must be managed through the
hotel reservation system, subject to applicable laws.
Planning Area 7
Planning Area 7 is proposed to allow for the development of 93 luxury branded resort residences.
These residences will be privately owned but maintain a direct affiliation with the adjacent luxury
hotel. Future residential owners will have the option to make their units available for short-term
vacation rental through a hotel -managed rental program. The purchase and sale agreement and
property covenants would require that all rentals must be managed through the hotel reservation
system, subject to applicable laws.
Planning Area 8
In Planning Area 8, a second 18-hole golf course is proposed with up to 253 private residences and
40,000 SF of commercial uses. This is the same program of development for this area included in the
2018 Master Plan. Planning Area 8 as defined in the 2025 Plan includes PAs 8, 9 and 10 as defined in
the 2018 Plan.
Planning Areas 11 and 12
PAs 11 and 12, City owned land planned for recreational use, are not part of the proposed 2025
project. These PAs include SilverRock park, which has been developed, and the other recreational
elements will be considered by the City as development occurs.
2.4 SCHEDULE
Construction of the 2025 Project would consist of two phases - Phase I and Phase II. Phase I would
include the development of PAs 1 to 7 and Phase 11 would include the development of PA 8. Each
phase would include site preparation (including clearing, grubbing, and grading), infrastructure
construction (including internal street development, electric, natural gas, and telecommunications
improvements), and construction of individual buildings. No building construction timeline is
available because the Specific Plan Area would be built out depending on market conditions.
Meridian Consultants
2.0-1 1
SilverRock Resort Project Addendum
September 2025
2.0—Project Description
Phase I is anticipated to occur over the course of seven years, with a start in November 2026 and
completion by April 2033. A breakdown of each PA in Phase I detailed below.
• Development of PAs 1, 3, 4 and 5 is anticipated to be from November 2026 to May 2029.
• PA 2, which would develop approximately 29 single-family homes, is estimated to start in early
2027. Construction of each house is expected to have a duration of 20 months, but they will not
all start at the same time. The last house is estimated to begin construction in late 2029 and
finish mid-2031.
• PA-6, which would develop 70 luxury condo units, is estimated to start early 2027 and have a 24-
month duration per building and with a total of 10 buildings. Assuming each building is one
month behind the next, Building 1 is estimated to start in Jan 2027 and Building 10 is estimated
to be complete by Oct 2029. Overall, condo building construction would start in January 2027
and be completed in October 2029.
• PA 7, which would develop 93 single-family homes, is anticipated to begin in 2030 and be built in
phases over 38 months, into April 2033.
Phase II, which would include the development of PA 8, is anticipated to be over the course of 11
years following the completion of Phase I, from 2035-2045.
Meridian Consultants
2.0-1 2
SilverRock Resort Project Addendum
September 2025
3.0 IMPACT ANALYSIS
This section includes separate subsections for each environmental topic addressed in the 2002
MND. Each topical section presents a summary of the information and conclusions of the analysis
in the Previous Assessments. Updated information reflecting any changes in the circumstances
under which the proposed Project will occur is presented for each topic, followed by analysis of the
environmental impacts of fully developing the uses as proposed by the proposed Project and as
compared to the Previous Assessments. The following environmental topics addressed in the
previous environmental review documents are addressed in this Addendum:
• Land Use and Planning • Hazards
• Population and Housing • Noise
• Geology and Soils • Public Services
• Water • Utilities and Service Systems
• Air Quality • Aesthetics
• Transportation/Circulation • Cultural Resources
• Biological Resources • Recreation
• Energy and Mineral Resources • Greenhouse Gases
The adopted 2002 MND identified the environmental effects of the 2002 Project that would be less
than significant, avoided, or substantially reduced to less than significant levels by the
implementation of the adopted mitigation measures.
The 2006 and 2014 Addenda evaluated the environmental effects of the development analyzed in the
addendum as compared to the development analyzed in the 2002 MND and determined the revisions
as proposed would not result in any new or substantially more severe significant impacts than
identified in the 2002 MND.
Meridian Consultants
3.0-1 Addendum to the 5ilverRock Resort Project
September 2025
3.0—Impact Analysis
3.1 LAND USE AND PLANNING
i nresiiuius
a. Physically divide an established community?
b. Conflict with any applicable land use plan, policy, or regulation of an agency with jurisdiction
over the project (including, but not limited to the general plan, specific plan, local coastal
program, or zoning ordinance) adopted for the purpose of avoiding or mitigating an
environmental effect?
c. Conflict with any applicable habitat conservation plan or natural community conservation
plan?
3.1.2 Summary of Findings in Previous Assessments
The Adopted MND and prior Addenda concluded that the development of the SilverRock Resort
Project would not disrupt or divide the existing community because the Project Site consisted of
vacant and partially developed land situated within a developed area. The Project Site is surrounded
on the north, east and south by similar golf course communities including the Citrus Club at PGA
West golf course and residential community north of Avenue 52; the Mountain View Country Club
golf course and residential community north of Avenue 52 and east of Jefferson Street; the Hideaway
golf club and residential community east of Jefferson Street; and the PGA West golf course and
residential community south of the Project Site. The western 160 acres of the site adjacent to the
Santa Rosa Mountains is preserved as open space. The prior project was planned to be compatible
with these adjacent resort and residential communities.
Consistent with the General Plan designations for the Project Site of Open Space — Recreation (OS-
R), Tourist Commercial (TC), and Open Space — Natural (OS-N) the Project has long been envisioned
as a golf resort with complementary residential, hotel, and commercial uses. The proposed resort,
residential, and commercial land uses were found to be compatible with surrounding land use
patterns, and buffers such as golf courses were planned along the periphery to ensure compatibility
and transition with adjacent neighborhoods.
The uses permitted by the Specific Plan were determined to be consistent with the City's General
Plan land use designations and zoning. No inconsistencies with applicable plans or policies were
identified. Subsequent refinement of the Project over time has reduced the overall intensity of the
allowed uses, including fewer residential units, fewer hotel room keys, and less commercial space
than previously analyzed. The Project remained consistent with the General Plan and Specific Plan.
In addition, the Prior Assessments concluded the Project would not conflict with the Coachella
Valley Multiple Species Habitat Conservation Plan (CVMSHCP) and identified mitigation measures
(MM) BIO-2 (building bighorn sheep fencing) to ensure compliance with the CVMSHP by focusing on
the protection and separation of bighorn sheep that live in the Santa Rosa Mountains west of the
Project Site from urban development.
Meridian Consultants
3.0-2 Addendum to the SilverRock Resort Project
September 2025
3.0—Impact Analysis
The Project Site is not located directly within the CVMSHCP Conservation Areas, but the Project Site
is located adjacent to the Santa Rosa and San Jacinto Mountains Conservation Area, and the project
would be required to pay the CVMSHCP/Natural Community Conservation Plan Mitigation Fee as
required by design feature 1 identified in the 2035 General Plan.
No new information or changed circumstances were identified in the Previous Assessments that
resulted in new or more severe impacts related to land use and planning. All impacts remained less
than significant, and no mitigation measures specific to land use and planning were identified in the
Previous Assessments.
3.1.E existing Condition
The City consists of residential, resort, and commercial development surrounded by hillside and
mountain open space areas. Most of the land within the City has been developed with a few
undeveloped infill lots located throughout the urbanized area.
As detailed in Section 2: Project Description, the 2014 DA, PDSA and subsequent amendments,
and SDPs allowed development in PAs 2 to 9. Construction began on several buildings, including the
conference center/shared services facility, golf clubhouse, hotel, spa, guest rooms, and branded
hotel residences, but was not completed, leaving partially constructed and unoccupied structures
on the Project Site. The Project Site currently includes the Arnold Palmer Classic Golf Course, the
Ahmanson House, and these partially constructed buildings.
The General Plan land use and zoning designations for the Project Site remain unchanged since the
2014 Addendum. As depicted in Figure 3.1-1: General Plan Land Use Map, most of the Project Site
has a General Plan land use designation of OS-R, with the central western portion designated as TC,
and the Coachella Canal area designated as OS-N. As depicted in Figure 3.1-2: Zoning Map,
corresponding zoning designations include Golf Course (GC) and Park and Recreation (PR) for OS-R,
Tourist Commercial (CT) for TC, and Floodplain (FP) for OS-N.
The Tourist Commercial designation allows tourism -related land uses, including resort hotels, hotels
and motels, and resort commercial development, such as conference centers, restaurants, resort -
supporting retail and services. The Recreational Open Space designation applies to parks, recreation
facilities, including driving ranges, club houses, and athletic facilities, as well as public and private
golf courses. The Natural Open Space designation is applied to areas of natural open space, whether
owned by private parties or public entities. Little development is permitted in this designation with
the exception of trail or trailhead development.
Meridian Consultants
3.0-3
SilverRock Resort Project Addendum
September 2025
Prom
MP: AEI
Mel
ITIEM
MEM
MEM
TEE
SOURCE: La Quinta — August 2022
:11r11oJ1imuu1w
j
,-
I
:�1p111io;111111111`
50th Ave
fT 111111111111
4)
�/Ip`q.►. ,
•
Ito
►ice nu.....t
.1)
is
ars
■ to a
• r .0 T
vC �0 ja
General Plan
Designations
9u.naune
i
!.ILILII.iP
LDR Low Density Residential
MHDR Medium and High Density
Residential
CG General Commercial
TC Tourist Commercial
VC Village Commercial
MC Major Community Facilities
OS-N Open Space Natural
OS-R Open Space Recreation
ROW Street Rights of Way
Sphere of Influence and
Planning Area
Project Area
FIGURE 3.1-1
Meridian
( onsultanls
General Plan Land Use Map
453-001-25
BiiiiinimmirmmminnumuNi
.I=r III I IIIIIIIIIIII
4111Miuneirss
4"1
iinnno�� Maio nnmm�nn
SOURCE: La Quinta — February 2024
-+ 1 @ r:onnmm�nq
� t 1 ell a,:,<„.
gild MP 4 ''' :
v �0
0 PIP *gin
�i +sva,�f in — 11II1�iiii iliur /.
ier;111!
:°. Ilipigety% w- -1..--ivani:saummitila O
At VW r:IWialt-4111rinstliti
a,.. ,.. .. rii
•
_Ih�
iI. T
NI Ill III $ N. �'
40 4& O
RESIDENTIAL DISTRICTS
RL - Low Density Residential
RM - Medium Density Residential
▪ RMH - Medium High Density Res.
▪ RH - High Density Residential
n RC - Cove Residential
SPECIAL PURPOSE DISTRICTS
▪ PR - Park and Recreation
▪ OS - Open Space
▪ GC - Golf Course
▪ FP - Floodplain
NONRESIDENTIAL DISTRICTS
CC - Community Commercial
▪ CN - Neighborhood Commercial
▪ CT - Tourist Commercial
▪ CP - Commercial Park
CO - Office Commercial
MI MC - Major Community Facilities
f I - Industrial
VC - Village Commercial
SPECIAL SYMBOLS
City Boundary
.' Sphere of Influence &
Planning Area
r? Density Overlay
mm Low Density &
Agricultural -Equestrian Overlay
▪ Equestrian Overlay
FIGURE 3.1-2
Nj1eridian
(onsuitor is
Zoning Map
453-001-25
3.0—Impact Analysis
General Plan land use designations surrounding the Project Site include OS-R and Medium and High
Density Residential (MHDR) to the north; OS-R, MHDR and OS-N to the east; OS-R and Low Density
Residential (LDR) to the south; and OS-R, LDR and OS-N to the west. Zoning designations
surrounding the Project Site include GC and Low Density Residential (RL) to the north; GC, Medium
High Density Residential (RMH), RL and FP to the east; GC and RL to the south; and Open Space (OS),
RL, and GC to the west.
3.1.4 Analysis of the Proposed Project
The 2025 Project would reconfigure the planned hotel, residential and related uses in PAs 1 to 8. The
Project Site has been planned for the development of a golf course and complementary hotel,
residential and commercial land uses and implementation of the SilverRock Resort Project as
allowed by the SilverRock Resort Specific Plan would not physically divide an established community
for this reason.
As detailed in Table 2-2: Comparative Land Use Summary: Prior Environmental Reviews and the
2025 SilverRock Master Plan, the 2025 Project includes approximately 599 hotel/residential units,
40,000 SF of commercial uses, 55,000 SF banquet/shared facilities, 36 golf holes and a new
clubhouse for the Arnold Palmer Classic Course, which would reduce overall development intensity,
including fewer residential units, fewer hotel room keys, and less commercial square footage than
analyzed in the Previous Assessments. The 2025 Project would remain consistent in terms of use and
character with the surrounding golf and residential uses. Therefore, the 2025 Project would not result
in any new significant or substantially more severe land use impacts than were identified in the
Previous Assessments.
The 2025 Project would not conflict with the Coachella Valley Multiple Species Habitat Conservation
Plan (CVMSHCP), which was approved in 2007. The CVMSHCP is a joint regional planning effort of
the USFWS, California Department of Fish and Game (CDFG), Bureau of Land Management (BLM),
US Forest Service (USFS), National Park Service (NPS), as well as Riverside County and local
jurisdictions within the Coachella Valley, including the City of La Quinta. As required by MM BIO-2, a
fence was constructed to reduce potential adverse impacts to bighorn sheep to less than significant
by precluding access to the Project Site. With the implementation of MM BIO-2, the 2025 Project
would not adversely affect any sensitive natural community identified in the General Plan, the
CVMSHCP policies and regulations or by the California Department of Fish and Wildlife (CDFW) or
US Fish and Wildlife Service (USFWS). The City of La Quinta participates in the CVMSHCP mitigation
fee for new development to offset potential biological impacts as discussed further in Section 3.7,
Biological Resources, and the 2025 Project remains subject to the CVMSHCP fee.
Land use and planning impacts associated with the 2025 Project would be similar to those identified
in the Previous Assessments and would be less than significant. No new significant impacts or
increase in the severity of any previously identified significant impacts would result from changes to
the Project, new information, or changes to the circumstances under which the Project will be
undertaken.
Meridian Consultants
3.0-6
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
3.2 POPULATION AND HOUSING
3.2.1
i nresiiuius
a. Induce substantial population growth in an area, either directly (for example, by proposing
new homes and businesses) or indirectly (for example, through extension of roads or other
infrastructure)?
b. Displace substantial numbers of existing housing, necessitating the construction of
replacement housing elsewhere?
c. Displace substantial numbers of people, necessitating the construction of replacement
housing?
3.2.2 Summary of Findings in Previous Assessments
Previous Assessments found that development of the Project would allow land uses that are
consistent with the General Plan Land Use designations and as permitted by the approved Specific
Plan. The Specific Plan allows for timeshares, hotels, resort casitas, and privately owned residential
units. The prior Addenda discussed that these units may typically be occupied on a seasonal basis,
which is typical for privately owned units in resort communities in the Coachella Valley. The Previous
Assessments concluded the project would not induce substantial growth in the area. Previous
Assessments identified that the proposed development intensities would result in fewer units, hotel
keys and commercial space when compared to what is permitted by the Specific Plan. Previous
Assessments identified that the reduction in intensity of land uses would generate fewer visitors to
the Specific Plan Area. The 2035 General Plan growth projections accounted for the Specific Plan.
Accordingly, no new expansion of existing utility or infrastructure improvements would be needed.
No new information or changed circumstances were identified in the Previous Assessments that
resulted in new or more severe impacts related to population and housing. All impacts remained less
than significant.
3.2.3 Existing Condition!
The California Department of Finance (DOF) annually updates the latest population and housing
numbers. As of January 1, 2025, DOF estimates that the City has a population of approximately
38,796 residents and 24,700 housing units.3 The Project Site does not contain any habitable
residential units nor contains anyone living on the site.
Analysis of PropocPrI PrniPrt
The Project Site was approved for the development of hotel and residential units. The 2025 Project
includes approximately 599 hotel/residential units, which is less hotel/residential units analyzed in
the Previous Assessments. Of those 599 hotel/residential units, there would be 154 hotel units and
3 California Department of Finance. "E-5 Population and Housing Estimates for Cities, Counties, and the State, 2020-
2025." Accessed July 2025. https://dof.ca.gov/forecasting/demographics/estimates/e-5-population-and-housing-
estimates-for-cities-cou nties-and-the-state-2020-2025/.
Meridian Consultants
3.0-7
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
192 branded residences. For purposes of assessment in this Addendum, it is assumed that all
residential and hotel units would be occupied full time. The 346 hotel units and branded residences
would generate a population increase of 976 people.4 The remaining 253 residential units in PA 8
would generate a population increase of 714 people, for a total population increase of 1,690
people.5,6
As mentioned above, the City has a current population of approximately 38,796 residents and 24,700
housing units. The City's projected 2050 population is 55,836, an increase of 17,040 residents within
25 years.7 The addition of 1,690 people would not represent a substantial increase, representing
approximately 9.9 percent of the City's projected population growth from 2025 to 2050. The City
currently has 24,700 housing units. The City's 2035 General Plan EIR found that at General Plan build
out, there would be 31,603 dwelling units at full occupancy within the City, an increase of 6,903
units.8 The 2025 Project's 599 units would represent approximately 8.7 percent of the growth from
2025 to the General Plan build out.
The 2025 Project's proposed residential uses would not induce substantial population and housing
growth within the City. No existing populations reside within the Project Site nor are there any existing
habitable housing units within the Project Site. Therefore, development of the 2025 Project would not
displace substantial numbers of people, as the Project Site does not contain existing housing and
would not require the construction of replacement housing elsewhere.
Population and housing impacts associated with the 2025 Project would be similar to those identified
in the Previous Assessments and would be less than significant. No new significant impacts or
increase in the severity of any previously identified significant impacts would result from changes
associated with the 2025 Project, new information, or changes to the circumstances under which
the 2025 Project will be undertaken.
4 (346 proposed units x 2.82 people per household) = 976 persons.
5 (253 proposed residential units x 2.82 people per household) = 714 persons.
6 The 2.82 people per household figure was derived from the Connect SoCal 2024 Plan's Demographics and Growth
Forecasts total population and household information for the County of Riverside. (2,992,000 total population /
1,062,000 total households) = 2.82 persons per household in 2050. The future projected number of households for the
City in 2050 is 19,800. Southern California Association of Governments. "Final Connect SoCal 2024 Demographics
and Growth Forecast." Accessed July 2025. https://scag.ca.gov/connect-socal.
7 (2.82 persons per household in 2050 x 19,800 households in 2050) = 55,836 people Southern California Association
of Governments. "Final Connect SoCal 2024 Demographics and Growth Forecast." Accessed July 2025.
https://scag.ca.gov/connect-socal.
8 City of La Quinta. 2035 La Quinta General Plan EIR. Accessed July 2025.
https://laglaserweb.laquintaca.gov/WebLink/Browse.aspx?id=104281 &dbid=1 &repo=CityofLaQuinta.
Meridian Consultants
3.0-8 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
3.3 GEOLOGY AND SOILS
3.3.1 i nresiiuius
a. Expose people or structures to potential substantial adverse effects, including the risk of loss,
injury, or death involving:
i) Rupture of a known earthquake fault, as delineated on the most recent Alquist-Priolo
Earthquake Fault Zoning Map issued by the State Geologist for the area or based on other
substantial evidence of a known fault? Refer to Division of Mines and Geology Special
Publication 42.
ii) Strong seismic ground shaking?
iii) Seismic -related ground failure, including liquefaction?
iv) Landslides?
b. Result in substantial soil erosion or the loss of topsoil?
c. Be located on a geologic unit or soil that is unstable, or that would become unstable as a
result of the project, and potentially result in an onsite or off -site landslide, lateral spreading,
subsidence, liquefaction or collapse?
d. Have soils incapable of adequately supporting the use of septic tanks or alternative waste
water disposal systems where sewers are not available for the disposal of waste water?
3.3.? Summary of Findings in Previous Assessments
Previous Assessments found no evidence of an Alquist-Priolo Zone, or potential active faulting within
the City, or the Project Site. Therefore, the potential for surface rupture as a result of fault plane
displacement during the design life of the Project Site was determined to be less than significant. As
also described in Prior Assessments, there are no active or potential faults within the City. However,
geological analyses conducted for the 2035 General Plan indicated the City could experience
moderate to very high ground shaking from earthquakes along the San Andreas Fault. Strong ground
shaking could result in indirect hazards, such as slope instability, liquefaction, settlement,
landslides, and flood inundation. All new buildings in the City are required to reinforce masonry, and
new construction must comply with the Uniform Building Code (UBC). Compliance with the UBC
would allow structures to resist major earthquakes without collapsing. As identified in MM GEO-1
and MM GEO-2, a comprehensive design level geotechnical evaluation and compliance with
applicable building codes would minimize structural damage to buildings and ensure safety in the
event of a moderate or major earthquake, respectively. Potential impacts would be reduced to a less
than significant level with implementation of MM GEO-1 and MM GEO-2.
Previous Assessments determined the Project Site is not located on a geologic unit that is considered
unstable, and liquefaction and ground subsidence due to the lowering of the existing groundwater
table is considered unlikely due to the minimum depth of 50 feet below ground surface for
groundwater on the site. Previous Assessments found that the Project Site is not within areas with
high or moderate liquefaction susceptibility and impacts would be less than significant. The southern
and western portions of the Planning Area near the base of steep slopes associated with the Santa
Meridian Consultants
3.0-9
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
Rosa and San Jacinto Mountains are at risk due to seismically induced slope instability. Lands
downslope of mountain slopes and hillsides may be susceptible to risks associated with landslide
and rockfall. The western edge of the Project Site has potential for soil slumps and rock fall to occur
as it is adjacent to the Santa Rosa Mountains; however, the western portion of the Project Site
consists of the existing Arnold Palmer Classic Golf Course and is not designated for additional
development. Previous Assessments found that the potential impact to structures from earthquake
induced slope instability would be less than significant.
Unconsolidated soils occur in many areas of the City and are subject to erosion, including wind
erosion. Previous Assessments identified MM AQ-1 through MM AQ-3 for dust control. Further, as
identified in the SilverRock Soil Stabilization Project, Previous Assessments described the
incorporation of vegetation to stabilize and avoid the loss of loose soils.9Thus, impacts related to
erosion, including wind erosion would be less than significant.
Previous Assessments also identified that there would be no use of septic tanks or alternative
wastewater disposal systems because all uses would be connected to existing sanitary sewer lines.
No impacts related to alternative wastewater disposal systems would occur.
No new information or changed circumstances were identified in the Previous Assessments that
resulted in new or more severe impacts related to geology and soils. All impacts remained less than
significant with incorporation of MM GEO-1 and MM GEO-2.
Previously Identified Mitigation Measures
MM GEO-1 Prior to the design and construction of any structural improvements, a
comprehensive design level geotechnical evaluation shall be prepared that includes
subsurface exploration and laboratory testing. Recommendations for
grading/earthwork, surface and subsurface drainage, foundations, pavement
structural sections, and other pertinent geotechnical design considerations shall be
formulated and implemented based on the findings of this evaluation.
MM GEO-2
All buildings planned as a result of the proposed Project shall be constructed in
conformance with the Uniform Building Code (UBC), as adopted by the City of La
Quinta.
9 At the time the 2006 Addendum was being prepared, the SilverRock Soil Stabilization Project was being implemented
to avoid the loss of loose soils in the Specific Plan Area. The SilverRock Soil Stabilization Project included stabilizing
approximately 245 acres of undeveloped land within the Specific Plan Area with vegetation. The stabilization project
involved minor grading, clearing and grubbing, planting of barley seed and supplying temporary irrigation in order to
grow the seed for approximately 3 weeks. Once the barley was established the irrigation was removed and the barley
would stabilize the soil together for 2 to 3 years. This was done as a dust mitigation measure until the site is completely
developed.
Meridian Consultants
3.0-1 0 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
3.3.3 Existing Conditions
The City consists of residential, resort, and commercial development surrounded by hillside and
mountain open space areas. Most of the land within the City has been developed with a few
undeveloped infill lots located throughout the urbanized area.
As detailed in Section 2: Project Description, the Project Site is fully graded and is developed with
the Arnold Palmer Classic Golf Course, the Ahmanson House, and partially constructed buildings.
A Technical Background Report for the Safety Element of the La Quinta 2035 General Plan was
completed in 2010.10 The report identified earthquake -triggered geologic effects including ground
shaking, surface fault rupture, landslides, liquefaction, subsidence, and seiches. Seismic hazards
include areas susceptible to earthquake -induced slope instability and liquefaction. Geological
hazards identified within the City in the 2035 General Plan EIR included landslides, slope instability,
compressible, collapsible, or expansive soils, soil corrosivity, ground subsidence, erosion, and wind-
blown sand. Potential geology and soils hazards identified on the Project Site include liquefaction,
landslides, slope instability, and ground subsidence. No Alquist-Priolo Zones, or evidence of active
or potentially active faulting have been identified within the City.
3.3.4 Analysis of Proposed Project
The 2025 Project would develop hotel, residential, commercial, and related uses in PAs 1 to 8. The
Project Site has been planned for the development of a golf course and complementary hotel,
residential and commercial land uses. As detailed in Table 2-2, the 2025 Project includes
approximately 599 hotel/residential units, 40,000 SF of commercial uses, 55,000 SF banquet/shared
facilities, 36 golf holes and a new clubhouse for the Arnold Palmer Classic Course, which would
reduce overall development intensity, including fewer residential units, fewer hotel room keys, and
less commercial square footage than analyzed in the Previous Assessments.
There is no evidence of an Alquist-Priolo Zone, or active or potential active faulting encountered
anywhere within the boundaries of or near the Project Site. Therefore, the potential for surface
rupture as a result of fault plane displacement during the design life of the 2025 Project would be
less than significant.
Although there are no active or potential faults within the City, geological analyses conducted for the
2035 General Plan indicate that the City could experience moderate to very high ground shaking from
earthquakes along the San Andreas Fault. Strong ground shaking can result in indirect hazards, such
as slope instability, liquefaction, settlement, landslides, and flood inundation. All new buildings in
the City are required to reinforce masonry. Additionally, new construction must comply with the UBC,
and compliance with the UBC would allow structures to resist major earthquakes without collapsing,
10 City of La Quinta. Technical Background Report to the Safety Element of the La Quinta 2035 General Plan Update.
Seismic Hazards. Geologic Hazards. Flooding Hazards. June 2010.
Meridian Consultants
3.0-1 1 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
even if structural damage occurs.11 The 2025 Project would be designed in compliance with a
comprehensive design level geotechnical evaluation and adherence to applicable building codes (as
identified in MM GEO-1 and MM GEO-2) to minimize structural damage to buildings and ensure
safety in the event of a moderate or major earthquake and reduce this potential impact to a less than
significant level.
The Project Site is not located in areas with high or moderate liquefaction susceptibility because the
groundwater level found at the Project Site is lower than 50 feet below ground surface (bgs). Impacts
would be similar to impacts identified in the Previous Assessments resulting in less than significant
impacts.
Areas at risk due to seismically induced slope instability occur within the southern and western
portions of the Planning Area near the base of steep slopes associated with the Santa Rosa and San
Jacinto Mountains. Lands downslope of mountain slopes and hillsides may be susceptible to risks
associated with landslides and rockfall. The 2025 Project is not located in areas with very high, high,
or moderate earthquake -induced slope instability. The western edge of the Project Site is located
adjacent to the base of the Santa Rosa Mountains, where soil slumps and rock falls occur. This area
of the Project Site contains the existing Arnold Palmer Classic Golf Course and is not designated for
development. As such, the potential impact to structures from earthquake induced slope instability
would be less than significant.
Unconsolidated soils occur in many areas of the City and are particularly subject to erosion,
including wind erosion. Erosion can result in loss of topsoil and diminish soil productivity. A majority
of the City is located within an active wind erosion zone. The 2025 Project would continue to adhere
to the mitigation measures related to erosion and dust control for the Project Site that were identified
in Previous Assessments, MM AQ-1 through MM AQ-3. Therefore, impacts related to erosion would
be less than significant.
The Project Site is not within a geologic unit that is considered unstable, and ground subsidence due
to the lowering of the existing groundwater table is considered unlikely as the groundwater table is a
minimum of 50 feet below the ground surface on the site. A portion of the Coachella Canal within the
Arnold Palmer Classic Golf Course experienced localized subsidence due to its location atop two
different types of ground materials: bedrock and alluvial soils. These materials settle at different
rates overtime, causing uneven ground movement that led to the sinking of the canal in certain areas.
To address this issue, the Coachella Valley Water District (CVWD), in coordination with the City of La
Quinta, implemented a canal realignment project in 2014. The project involved constructing a new,
parallel segment of the canal approximately 4,600 feet in length to bypass the unstable section. This
realignment restored the full conveyance capacity of the canal and eliminated the subsidence-
11 City of La Quinta. 2035 La Quinta General Plan EIR.
Meridian Consultants
3.0-12
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
related deficiencies. Construction was completed by September 2014. The 2025 Project will not
impact any portion of the realigned canal.
The 2025 Project would not include the use of septic tanks or alternative wastewater disposal
systems, as it would connect to existing sanitary sewer. As such, no impacts would occur with the
implementation of the Project.
Geology and soil impacts associated with the 2025 Project would be similar to those identified in the
Previous Assessments and would be less than significant with the incorporation of MM GEO-1, MM
GEO-2, and MM AQ-1 through MM AQ-3. No new significant impacts or increase in the severity of any
previously identified significant impacts would result from changes to the 2025 Project, new
information, or changes to the circumstances under which the 2025 Project will be undertaken.
Meridian Consultants
3.0-1 3 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
j•
3.4 WATER
3.4.1 Thresholds
a. Violate any water quality standards or waste discharge requirements?
b. Substantially deplete groundwater supplies or interfere substantially with groundwater
recharge such that there would be a net deficit in aquifer volume or a lowering of the local
groundwater table level (e.g., the production rate of preexisting nearby wells would drop to a
level which would not support existing land uses or planned uses for which permits have been
granted)?
c. Substantially alter the existing drainage pattern of the site or area, including through the
alteration of the course of stream or river, in a manner, which would result in substantial
erosion or siltation on or off site?
d. Substantially alter the existing drainage pattern of the site or area, including through the
alteration of the course of a stream or river, or substantially increase the rate or amount of
surface runoff in a manner, which would result in flooding on or off site?
e. Create or contribute runoff water which would exceed the capacity of existing or planned
storm water drainage systems or provide substantial additional sources of polluted runoff?
f. Otherwise substantially degrade water quality?
g. Place housing within a 100-year flood hazard area as mapped on a federal Flood Hazard
Boundary or Flood Insurance Rate Map or other flood hazard delineation map?
h. Place within a 100-year flood hazard area structures which would impede or redirect flood
flows?
i. Expose people or structures to a significant risk of loss, injury, or death involving flooding,
including flooding as a result of the failure of a levee or dam?
Inundation by seiche, tsunami, or mudflow?
4 ? Summary of Findings in PrPviniic Assessmentc
The Previous Assessments found that construction and operation of the project could result in
potentially significant erosion, runoff, and water quality impacts. However, implementation of MM
W-2, MM W-3, MM W-5, and MM W-8 would reduce construction and operation erosion runoff and
water quality impacts to less than significant levels. MM W-2would ensure that water trucks are used
during construction for dust control; MM W-3 would ensure the development of a hydrology master
plan prior to issuance of grading permits to ensure that proposed storm drainage and hydrologic
improvements would conform to applicable regulations; MM W-5 would ensure the development of
a Storm Water Pollution Prevention Program (SWPPP) to develop Best Management Practices (BMPs)
that would reduce erosion, runoff, and water quality impacts to acceptable threshold levels; and MM
W-8 would ensure that the design of the project would incorporate proper engineering controls to
accommodate design year storms that would incorporate filtration systems and protect groundwater
or surface water runoff.
Domestic and irrigation water is provided throughout La Quinta and the eastern Coachella Valley by
the Coachella Valley Water District (CVWD). The main source of potable water provided to the City is
Meridian Consultants
3.0-14
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
from an underground aquifer, known as the Whitewater River Subbasin, beneath the valley floor.
Irrigation water is supplied from this same aquifer and from the Colorado River via the Coachella
Canal and is consumed generally in the area from Indio and La Quinta south to the Salton Sea. Water
consumption related to the project's residential, commercial and irrigation uses could potentially
result in significant water use.
A Water Supply Assessment (WSA) and Water Supply Verification (WSV) approved by the Coachella
Valley Water District (CVWD) for the project confirmed that CVWD had sufficient water supplies
available to meet the demands of the project. Additionally, the Project would incorporate MM W-1,
MM W-4, and MM W -7 to further minimize water use, resulting in less than significant water use
impacts. MM W-1 would require the use of non -potable sources of water for irrigation at such time it
becomes available to the Project Site; MM W-4 would require drought tolerant landscaping as
feasible to reduce water consumption; and MM W-7 would require a Golf Course Management Plan
to reduce irrigation runoff and percolation into the groundwater basin.
At the time of the 2002 MND, there were groundwater wells within the site and MM W-6, which
required abandoning groundwater wells no longer in use was implemented. No groundwater wells
exist on the site.
The Project Site is not within a 100-year flood hazard area, nor near a large body of water that would
be able to cause a significant seiche, tsunami or mudflowto the site. The General Plan considers the
Coachella Canal, which bisects the Project Site, as a levee. However, the General Plan EIR confirms
that no significant inundation would occur if the canal banks fail.
No new information or changed circumstances was identified in the Previous Assessments that
resulted in new or more severe impacts related to water. All impacts remained less than significant
with the incorporation of MM W-1 through MM W-8.
Previously Identified Mitigation Measures
MM W-1
At such time that non -potable water sources become available to the Project Site,
the Project shall be connected to this resource and utilize the non -potable water for
irrigation purposes.
MM W-2 During construction activities, water trucks are to acquire water from non -potable
water sources, such as reclaimed water and/or canal water.
MM W-3 A hydrology master plan shall be prepared for the Project Specific Plan. Further, a
hydrology study shall be prepared for the hydrology master plan and submitted to the
City of La Quinta for approval prior to the issuance of grading permits. This study shall
demonstrate that the Project would construct storm drainage and hydrologic
improvements, such as on -site stormwater retention basins, that conform to the
Meridian Consultants
3.0-1 5 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
City's master hydrology and storm drain improvement program as well as implement
regional and local requirements, policies, and programs.
MM W-4 Drought tolerant landscaping shall be utilized as a means of reducing water
consumption.
MM W-5 Prior to the initiation of any construction activity on the Project Site, a Notice of Intent
(NOI) to conduct construction activities under the general NPDES construction
permit shall be filed. Under the conditions of this NPDES permit a Storm Water
Pollution Prevention Plan (SWPPP), and Monitoring Plan are required. The SWPPP
shall include Best Management Practices (BMPs) in compliance with the NPDES
program requirements.
MM W-6
MM W-7
MM W-8
Any existing groundwater wells located on the site that are no longer in use shall be
abandoned in accordance with federal, State, and local laws and regulations prior to
the issuance of building permits.
Prior to operation of the golf course, the golf course operator shall prepare a Golf
Course Management Plan that includes an irrigation plan, water usage plan, and
chemical management plan in order to reduce, to the extent feasible, golf course
irrigation runoff and percolation into the groundwater basin.
Design of new roads, golf courses, man-made ponds, common landscape areas,
storm water basins, and other facilities shall incorporate proper engineering controls
to channel storm and irrigation runoff into detention/retention facilities that are sized
to accommodate design year storms and that incorporate filtration systems or other
devices to reduce the potential for herbicides, pesticides, fertilizers, and other
contaminants to percolate to groundwater or surface water runoff.
3.4.3 Existing Condition, -
The Project Site is developed with the Arnold Palmer Classic Golf Course, Ahmanson House, partially
developed hotel and residential buildings, and has been mass graded and vegetated to minimize soil
erosion. The hydrology design includes the use of the golf course as part of the storm water control
system. The golf course has sufficient capacity to accommodate existing on -site drainage quantities.
On -site drainage systems have been constructed since the development of the site in 2002.
A major storm drain exists along the northerly property frontage within Avenue 52 which extends
2,200 feet to the Calle Rondo storm drain from the northwesterly corner of the site to a point just past
the Avenue 52/SilverRock Way entrance and then back onto the resort property into the second golf
course envelope (Planning Area 8).
Meridian Consultants
3.0-16
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
The Arnold Palmer Golf Course is irrigated using Coachella Canal water. The Specific Plan Area is not
located within a 100-year or 500-year floodplain.12
3.4.4 Analysis of Proposed Project
Construction and operation of the 2025 Project could potentially result in erosion, runoff, and water
quality impacts. Although the 2025 Project involves reduced development intensity compared to the
land uses analyzed in the Previous Assessments, these impacts may still occur. However, with the
incorporation of mitigation measures MM W-2, MM W-3, MM W-5, and MM W-8, potential erosion,
runoff, and water quality impacts would be reduced to less than significant levels.
As discussed above, a WSA and WSV were developed for the project analyzed in the Previous
Assessments and confirmed that CVWD would be able to provide a sufficient amount of water for
the demands of the original, more intense project. The 2020 Coachella Valley Regional Urban Water
Management Plan confirms that CVWD has adequate water supplies to 2045 under normal, single,
and multiple dryyears.13
The water demand estimate for the SilverRock Resort Project in the 2006 Water Supply Assessment
(WSA) approved for the project was approximately 2,361 acre-feet per year. The estimated water
demand for the 2025 Project is approximately 2,376 acre-feet peryear.14 This potable water demand
is less than one percent greater than the demand estimate in the approved WSA. This incremental
increase does not represent a substantial increase in water demand for the project. The 2025 Project
would have a reduced development intensity, further reducing water demand. Additionally, the
project would incorporate MM W-1, MM W-4, and MM W-7 to further minimize water use, resulting in
less than significant water use impacts.
As mentioned above, the Project Site is not located within a 100-year flood zone, nor would the
Project Site be significantly impacted by a levee/dam, or seiche, tsunami or mudflow from an open
body of water.
Water impacts associated with the 2025 Project would be less intense than those identified in the
Previous Assessments and would be less than significant with the incorporation of MM W-1 to MM
W-5 and MM W-7 to MM W-8 and applicable regulatory requirements. No new significant impacts or
increase in the severity of any previously identified significant impacts would result from changes to
the 2025 Project, new information, or changes to the circumstances under which the 2025 Project
will be undertaken.
12 City of La Quinta. 2035 La Quinta General Plan. Chapter IV, Environmental Hazards. Flooding and Hydrology. "Exhibit
IV-6. FEMA Flood Zones and Flood Control Facilities." 2013. https://www.laquintaca.gov/business/design-and-
development/planning-division/2035-la-quinta-general-plan. Accessed July 2025.
13 Coachella Valley Water District. 2020 Coachella Valley Regional Urban Water Management Plan. 2021.
14 677.1 acre-feet per year (residential) + 142.2 acre- feet per year (commercial) + 1,457.9 acre-feet per year (open
space) +98. 7 acre-feet per year (public park) = 2,376. 6 acre-feet per year. CVWD, WSA and WSV for the proposed
SilverRock Resort Specific Plan, (2006) Table 3. 1- 1.
Meridian Consultants
3.0-1 7
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
3.5 AIR QUALITY
3.5.1 Thresholds
a. Conflict with or obstruct implementation of the applicable air quality plan?
b. Violate any air quality standard or contribute substantially to an existing or projected air
quality violation?
c. Result in a cumulatively considerable net increase of any criteria pollutant for which the
project region is non -attainment under an applicable federal or state ambient air quality
standard (including releasing emissions which exceed quantitative thresholds for ozone
precursors)?
d. Expose sensitive receptors to substantial pollutant concentrations?
e. Create objectionable odors affecting a substantial number of people?
3.5.2 Summary of Findings in Previous Assessments
The Previous Assessments concluded that the development of the Project Site would not conflict
with the applicable air quality plan, because all construction and operational activities would remain
below the South Coast Air Quality Management District's ("SCAQMD") recommended daily
thresholds for all criteria pollutants. The Previous Assessments also found that previous projects
would not violate any air quality standards with the incorporation of MM AQ-1 through MM AQ-13,
listed below. MM AQ-1 to MM AQ-3 require dust control, MM AQ-3 also included measures for
efficient construction traffic management, MM AQ-4, MM AQ-5, and MM AQ-7 through MM AQ-10
require the use of energy efficient materials and appliances, MM AQ-6 implemented trees for
shading, MM AQ-11 and MM AQ-12 require expansion of transit and more efficient on -site
circulation, and MM AQ-13 requires the use of low VOC paints.
Construction and operational air quality modeling previously conducted in the Previous
Assessments were based on the expected location, size, and development of the Project Site.
According to SCAQMD, if an individual project results in air emissions of criteria pollutants that are
below SCAQMD's recommended daily thresholds for project -specific impacts, then the project
would not result in a cumulatively considerable net increase of these criteria pollutants. The Previous
Assessments concluded that emissions resulting from construction and operations were not
projected to exceed any air quality emission significance thresholds with implementation of AQ-1
through 13, described above. Therefore, the Project would not result in a cumulative considerable
net increase of any criteria pollutant for which the Project Site region is designated as being non -
attainment.
The Project Site is developed with the Arnold Palmer Classic Golf Course and Ahmanson House, with
the nearest sensitive receptors being the surrounding residential and golf communities to the north,
east, and south. The nearest sensitive receptors were located in PGA West and the Hideaway
residential and golf communities, approximately 125 feet and 150 feet to the south and east,
respectively, of the boundaries of the Project Site. The localized significance thresholds (LSTs) were
Meridian Consultants
3.0-1 8
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
used to address potential air quality impacts to the nearby residents and neighborhoods surrounding
the Project Site. The land uses included in the Previous Assessments were found to be typical of uses
found throughout the City and were not found to generate on -site construction or operational
emissions in excess of the site -specific LSTs. None of the uses were found to have any special
concern with regards to harmful odorous pollutants that would negatively affect sensitive receptors
located within the vicinity of the Project Site.
No new information or changed circumstances were identified in the Previous Assessments that
resulted in new or more severe impacts related to air quality. All impacts remained less than
significant with the incorporation of mitigation measures identified in the Previous Assessments.
Previously Identified Mitigation Measures
MM AQ-1
Construction equipment shall be phased and operated in a manner to ensure the
lowest construction -related pollutant emission levels practical, and shall require the
use of water trucks, temporary irrigation systems and other measures which will limit
fugitive dust emissions during site disturbance and construction.
MM AQ-2 Air quality control measures identified in the Coachella Valley PM10 State
Implementation Plan (SIP) shall be implemented.
MM AQ-3 A PM10 Management Plan for construction operations shall be submitted prior to the
issuance of grading permits. The plan shall include dust management controls such
as:
• Water site and equipment morning and evening
• Spread soil binders on site, unpaved roads, and parking areas
• Re-establish ground cover on construction site through seeding and watering
• Pave construction roads, where appropriate
• Operate street -sweepers on paved roads adjacent to site
The following measures shall be implemented to reduce construction related traffic
congestion:
• Configure construction parking to minimize traffic disturbance
• Minimize obstruction of through -traffic lanes
• Provide flag person to ensure safety at construction sites, as necessary
• Schedule operations affecting roadways for off-peak traffic hours
• Provide rideshare incentives to construction personnel
MM AQ-4 Timeshare and golf facility construction shall utilize solar or low emission water
heaters to reduce natural gas consumption and emissions.
MM AQ-5 Timeshare and golf facility construction shall utilize energy -efficient appliances to
reduce energy consumption and emissions.
Meridian Consultants
3.0-19
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
MM AQ-6 Shade trees shall be provided in close proximity to Timeshare, hotel and golf facility
structures to reduce building heating/cooling needs.
MM AQ-7 Timeshare and golf facility construction shall utilize energy -efficient and automated
controls for air conditioners to reduce energy consumption and emissions.
MM AQ-8 Timeshare and golf facility construction shall utilize special sunlight -filtering window
coatings or double -paned windows to reduce thermal gain or loss.
MM AQ-9 Timeshare and golf facility construction shall utilize automatic lighting on/off
controls and energy -efficient lighting (including parking areas) to reduce electricity
consumption and associated emissions.
MM AQ-10 Timeshare and golf facility construction shall utilize light-colored roofing materials in
residential construction as opposed to dark roofing materials.
MM AQ-11 Bus stops shall be positioned at locations on and adjacent to the site to be
determined in coordination with the bus transit service provider that will serve the
Project area. Bus stops should be generally located 1/4-mile walking distance from
Timeshare units.
MM AQ-12 The golf course shall design on -site circulation plans for clubhouse parking to reduce
vehicle queueing.
MM AQ-13 To reduce VOC emissions associated with architectural coatings, water -based or
low-VOC coatings shall be used and applied with spray equipment with high transfer
efficiency and/or the need for paints and solvents should be reduced by using pre -
coated building materials or naturally colored building materials.
3.5.3 Existing Condition_
The Project Site is located within the Salton Sea Air Basin within the jurisdiction of the SCAQMD. The
City of La Quinta is subject to high intensity wind events year-round. During fall and winter months,
high-pressure systems from the north can conflict with low-pressure systems from the south, and
create a condition known as the Santa Ana winds, which can blow for multiple days at high speeds.
These strong winds sweep up, suspend and transport large quantities of sand and dust, reducing
visibility, damaging property, and constituting a significant health threat.
The Federal and State Clean Air Act standards are the thresholds by which regional ambient air
quality is measured. In the Coachella Valley air quality has exceeded state and federal standards for
ozone and particulate matter. Areas where air pollution levels persistently exceed the state or
national ambient air quality standards may be designated "nonattainment.' For evaluation purposes,
the SCAQMD territory is divided into 38 source receptor areas (SRAs). These SRAs are designated to
provide a general representation of the local meteorological, terrain, and air quality conditions within
Meridian Consultants
3.0-20
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
the particular geographical area. The Project Site is within SRA 30, Coachella Valley.15 The nearest
air monitoring station SCAQMD operates is located at 46990 Jackson Street in the City of Indio and
monitors 03, PM,o, and PM2.5. The nearest monitoring station to the Project Site that monitors NO2 is
the Palm Springs Fire Station located at 590 Racquet Club Road in the City of Palm Springs. The
Coachella Valley portion of the Salton Sea Air Basin is currently designated as being in nonattainment for
the federal ozone and PM10 and nonattainment for the State ozone and PM1o.
As detailed in Section 2: Project Description, the Project Site consists of areas that have been
previously graded, developed, or partially developed as shown in Figure 2-3: Project Site Aerial
Photographs. SilverRock Park is located in the northwest; the Arnold Palmer Classic Golf Course,
Ahmanson House, and a series of partially constructed buildings associated with the previous
approvals are located in the western portion of the site, as described in Table 2-1: Partially
Constructed Buildings, above.
3.5.4 Analysis of Proposed Project
SCAQMD is responsible for controlling emissions, primarily from stationary sources. SCAQMD, in
coordination with the Southern California Association of Governments (SCAG), is also responsible
for developing, updating, and implementing the Air Quality Management Plan (AQMP) for the air
basins. An AQMP is a plan prepared and implemented by an air pollution district for a county or region
designated as being in nonattainment of the National Ambient Air Quality Standards (NAAQS) or
California Ambient Air Quality Standards (CAAQS). SCAQMD adopted the Final 2022 Air Quality
Management Plan (2022 AQMP) on December 2, 2022.16The AQMP includes transportation control
measures developed by SCAG from its 2020-2045 Regional Transportation Plan / Sustainable
Communities Strategy (2020-2045 RTP/SCS), as well as the integrated strategies and measures
needed to meet the NAAQS. The AQMP demonstrates the attainment of the 1-hour and 8-hour ozone
NAAQS, as well as the latest 24-hour and annual PM2.5 standards.
Projects considered to be consistent with the Air Quality Management Plan (AQMP) would not
interfere with the attainment of the air quality levels identified in the AQMP because this growth is
included in the projections utilized in the formulation of the AQMP. A project is consistent with the
AQMP, in part, if it is consistent with the population, housing, and employment assumptions that
were used in the development of the AQMP.
15 South Coast Air Quality Management District (SCAQMD). "General Forecast Areas and Air Monitoring Areas." Map.
http://www.agmd.gov/docs/default-source/default-document-library/map-of-monitoring-areas.pdf. Accessed July
2025.
16 SCAQMD. Final 2022 Air Quality Management Plan. December 2, 2022. http://www.aqmd.govidocs/default-
source/clean-air-plans/air-quality-management-plans/2022-air-quality-management-plan. Accessed July 2025.
Meridian Consultants
3.0-21 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
It should be noted that the Specific Plan was accounted for in the growth projections in the 2035
General Plan.17 As shown in Table 2-2: Comparative Land Use Summary: Prior Environmental
Reviews and the 2025 SilverRock Master Plan, the 2025 Project would result in a reduced
development intensity. As detailed in Section 3.2: Population and Housing, the 2025 Project would
increase the population and housing well within the growth projections within the City.
As discussed further below, emission from construction and operation of the proposed Project would
fall below the applicable thresholds with the implementation of MM AQ-1 through MM AQ-13.18
Therefore, the 2025 Project would not conflict with or obstruct the implementation of an applicable
air quality plan.
Construction
The construction emissions for the 2025 Project were calculated using construction emission factors
contained in the California Emissions Estimator Model (Ca1EEMod) model (Appendix A). The
emission calculations assumed the use of standard construction practices, such as compliance
with SCAQMD Rule 403 (Fugitive Dust), to minimize the generation of fugitive dust, SCAQMD Rule
403.1 (Supplemental Fugitive Dust Control Requirements for Coachella Valley Sources), and Rule
1113 (Architectural Coatings). Compliance with Rule 403, Rule 403.1, and Rule 1113 is mandatory
for all construction projects. Specifically, Rule 403 and Rule 403.1 require watering of exposed
surfaces and unpaved roads three times daily, which is estimated to reduce fugitive dust emissions
of particulates less than 10 microns in diameter (PM10) and particulates less than 2.5 microns in
diameter (PM2.5) by 61 percent, requires a fugitive dust control plan for construction projects, and
requires reductions in the volatile organic compounds (VOC) content of coatings. Additionally, during
construction, all off -road construction equipment greater than 50 horsepower must meet USEPATier
3 emission standards with Level 3 DPF to minimize emissions of NO„ associated with diesel
construction equipment.
As discussed above, construction of the 2025 Project would include two phases - Phase I and Phase
II. Phase I would include the development of PAs 1 to 7 and Phase II would include the development
of PA 8. Phase I is anticipated to occur over the course of seven years, with a start in November 2026
and completion by April 2033. Table 3.5-1: Project Construction Schedule provides estimates of
the dates and durations of each of the activities that will take place during construction, as well as a
brief description of the scope of work. Future dates represent approximations based on the general
Project timeline and are subject to change, pending unpredictable circumstances that may arise. It
is important to note Project delays that affect the corresponding time period in which construction
activities would occur compared to the analysis time period would result in lower emissions due to
newer equipment, regulatory requirements, and greater engine efficiencies. Therefore, the reported
17 City of La Quinta. 2035 La Quinta General Plan. Economic Development. 2013. p. II-168.
18 MM AQ-4 through MM AQ-10 include requirements applicable to both timeshares and golf course facilities; however,
timeshares are not included in the 2025 Project. These mitigation measures remain applicable to the 2025 Project.
Meridian Consultants
3.0-22
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
construction emissions are overstated compared to the emissions associated with a delayed
construction schedule.
TABLE 3.5-1: PROJECT CONSTRUCTION SCHEDULE
Construction Activity
Approximate Start Date
Approximate End Date
Duration (Days)
Planning Area 1,3,4 & 5
Demolition 11/1/2026 12/13/2026
Grading 12/147/2026 1/22/2027
Building Construction 1/23/2027 3/2/2029
Paving 3/3/2029 3/30/2029
Architectural Coating 3/3/2029 5/25/2029
Planning Area 2
Demolition 11/1/2027 12/10/2027 30
Grading 12/11/2027 1/21/2028 30
Building Construction 1/22/2028 4/25/2031 850
Paving 1/22/2028 4/25/2031 850
Architectural Coating 1/22/2028 4/25/2031 850
Planning Area 6
Grading 1/1/2027 2/11/2027 30
Building Construction 2/19/2027 10/25/2029 700
Paving 2/19/2027 10/25/2029 700
Architectural Coating 2/19/2027 10/25/2029 700
Planning Area 7
Grading 1/1/2030 3/4/2030 45
Building Construction 3/5/2030 4/11/2033 810
Paving 3/5/2030 4/11/2033 810
Architectural Coating 3/5/2030 4/11/2033 810
Planning Area 8
Grading 1/1/2035 10/10/2036 465
Building Construction 10/11/2036 9/8/2045 2,325
Paving 10/11/2036 9/8/2045 2,325
Architectural Coating 10/11/2036 9/8/2045 2,325
Source: Refer to Modeling in Appendix A: Air Quality and Greenhouse Gas Emissions Outputs.
30
30
550
20
60
The estimated maximum daily emissions were estimated based on the construction schedule
provided in Table 3.5-1 and are presented in Table 3.5-2: Highest Daily Construction Pollutant
Emissions. These estimates are based on the expected location, size, and development of the
proposed Project uses. The analysis assumes that all of the construction equipment and activities
would occur continuously over the day and that construction activities in each planning area would
Meridian Consultants
3.0-23 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
overlap. Therefore, the input values used in this analysis are considered conservative, as most
equipment operates only a fraction of each workday and many of the activities would not overlap on
a daily basis. As shown in Table 3.5-2, construction activities associated with the development of
the 2025 Project would not result in an exceedance of VOC, nitrogen oxides (NOx), carbon monoxide
(CO), sulfur oxide (SOx), PM,o, and PM2.5thresholds. Impacts with regard to these air pollutants would
be less than significant, even when assuming overlapping construction activities which are unlikely
to occur. Potential construction emission impacts on sensitive receptors are analyzed below.
TABLE 3.5-2: HIGHEST DAILY CONSTRUCTION POLLUTANT EMISSIONS
Source
VOC
Pollutant (pounds/day)
NO. CO SOx
PM10
PM2.5
Maximum Emission
SCAQMD threshold
Threshold Exceeded?
56.7
75
No
65.3
100
No
81.4
550
No
73.5
150
No
9.9
150
No
5.0
55
No
Source: Refer to Modeling in Appendix A: Air Quality and Greenhouse Gas Emissions Outputs.
Abbreviations: CO = carbon monoxide; NOx = nitrogen oxide; PM10 = particulate matter less than 10 microns; PM2.5
= particulate matter less than 2.5 microns; VOC = volatile organic compounds; SCAQMD = South Coast Air Quality
Management District; SOx = sulfur oxide.
Operation
Operational emissions were estimated using the CalEEMod software, which was used to forecast the
daily regional emissions that would occur during long-term Project operations.
Operation of the 2025 Project has the potential to generate criteria pollutant emissions through
vehicle trips traveling to and from the Project Site. In addition, emissions would result from area
sources on site, such as landscaping equipment and use of consumer products. Area -source
emissions are based on landscaping equipment and consumer products (including paint) usage
rates provided in CalEEMod.
The estimated operational emissions based on development of all the proposed land uses are
presented in Table 3.5-3: Operational Emissions. As shown in Table 3.5-3, the 2025 Project's
operational emissions would not exceed regional daily VOC, NOx, CO, SOx, PM10, and PM2.5
thresholds. Therefore, daily operational emissions generated by the proposed Project would be less
than significant.
Meridian Consultants
3.0-24
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
TABLE 3.5-3: OPERATIONAL EMISSIONS
Source
VOC
Pollutant (pounds/day)
NO, CO SO,
PM10
PM2.5
Maximum Emission
SCAQMD threshold
Threshold exceeded?
52.2
55
No
33.9
55
No
331.0
550
No
1.0
150
No
87.2
150
No
22.4
55
No
Source: Refer to Air Quality and Greenhouse Gas Modeling data sheets in Appendix A: Air Quality and Greenhouse Gas
Emissions Outputs.
As shown in Table 3.5-3, operational emissions for the 2025 Project do not exceed the SCAQMD
thresholds of significance. According to SCAQMD, if an individual project results in air emissions of
criteria pollutants that are below the SCAQMD's recommended daily thresholds for project -specific
impacts, then the project would not result in a cumulatively considerable net increase of these
criteria pollutants. By applying SCAQMD's cumulative air quality impact methodology,
implementation of the 2025 Project would not exceed the thresholds for these criteria air pollutants,
and no significant cumulative impacts would occur. Therefore, the 2025 Project would not result in a
cumulatively considerable net increase of criteria air pollutants. and would not result in a cumulative
considerable net increase of any criteria pollutant for which the 2025 Project region is designated as
in non -attainment.
Sensitive Receptors
SCAQMD considers a sensitive receptor to be a person in the population who is particularly
susceptible to health effects due to exposure to an air contaminant. The nearest sensitive receptors
are located in PGA West and the Hideaway residential and golf communities, approximately 125 feet
and 150 feet to the south and east, respectively of the boundaries of the proposed Project Site.
Localized Significance Threshold
The localized significance thresholds (LSTs) used in this analysis address whether there are potential
impacts to residents and neighborhoods located around and near the Project Site. The 2025 Project
assumed up to 3 acres was disturbed each day. The allowable mass -rate emissions were determined
using the specified thresholds for a 3-acre site at a distance of 50 meters (150 feet) from the nearest
sensitive receptor as determined by SCAQMD.
The local significance thresholds are based on the SCAQMD's Final Localized Significance Threshold
Methodology (LST Methodology)19 guidance document for short -duration construction activities.
19 SCAQMD. Final Localized Significance Threshold (LST) Methodology. July 2008. Accessed March 2025.
http://www.agmd.gov/docs/default-source/ceqa/handbook/localized-significance-thresholds/final-lst-
methodology-document.pdf?sfvrsn=2.
Meridian Consultants
3.0-25
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
The SCAQMD recommends the evaluation of localized air quality impacts to sensitive receptors in
the immediate vicinity of the Project site because of construction activities.
The LST Methodology provides lookup tables of emissions that are based on construction projects of
up to five acres in size. The threshold is a daily emissions level and thus the acreage is an
approximation of the daily disturbed area.20 As such, the ambient conditions for a 3.0-acre site
within SRA 30 were used for ambient conditions in determining appropriate threshold levels.
The construction and operation analysis for LSTs for the proposed Project are shown in Table 3.5-4:
Localized Construction and Operational Emissions. As shown in Table 3.5-4, the on -site
emissions incorporate the required regulations for compliance with Rule 403 (Fugitive Dust), Rule
403.1, and Tier 3 engines for off -road construction equipment. The construction of the proposed
Project would not generate on -site emissions in excess of the site -specific LSTs for NOx, CO, PM1o,
and PM2.5. Given this, the 2025 Project would result in a less than significant impact on sensitive
receptors located north, east, and south of the Specific Plan Area.
According to the SCAQMD, while almost any source may emit objectionable odors, some land uses
will be more likely to produce odors because of their operation. Land uses that are more likely to
produce odors include agriculture, chemical plants, composting operations, dairies, fiberglass
molding, landfills, refineries, rendering plants, rail yards, and wastewater treatment plants. The
proposed Project does not contain any active manufacturing activities. Therefore, objectionable
odors would not be emitted by the proposed Project.
TABLE 3.5-4: LOCALIZED CONSTRUCTION AND OPERATIONAL EMISSIONS
Source
NO,
On -Site Emissions (pounds/day)
CO
PM10
PM2.5
Construction
Maximum emissions 27.2
LST threshold 258
Threshold Exceeded? No
Operational
27.6
2,337
No
3.5
29
No
1.9
8
No
Area/energy emissions 7.0 45.4 0.6 0.6
LST threshold 258 2,337 7 2
Threshold Exceeded? No No No No
Source: Modeling results are located in Appendix A: Air Quality and Greenhouse Gas Emissions Outputs.
20 SCAQMD. Example 1 of SCAQMD "Fact Sheet" for Applying Ca1EEMod to Localized Significance Thresholds.
http://www.agmd.gov/docs/default-source/cega/handbook/localized-significance-thresholds/caleemod-
guidance.pdf?sfvrsn=2. Accessed July 2023.
Meridian Consultants
3.0-26 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
TABLE 3.5-4: LOCALIZED CONSTRUCTION AND OPERATIONAL EMISSIONS
Source
On -Site Emissions (pounds/day)
NO. CO PM,o
PM2.5
Abbreviations: CO = carbon monoxide; NOx = nitrogen oxide; PM10 = particulate matter less than 10 microns; PM2.5
= particulate matter less than 2.5 microns
Air quality impacts associated with the 2025 Project would be similar to those identified in the
Previous Assessments, would be less than significant, and would be further reduced with the
implementation of MM AQ-1 through MM AQ-13.21 No new significant impacts or increase in the
severity of any previously identified significant impacts would result from changes to the 2025
Project, new information, or changes to the circumstances under which the 2025 Project will be
undertaken.
21 MM AQ-4 through MM AQ-10 include requirements applicable to both timeshares and golf course facilities; however,
timeshares are not included in the 2025 Project. These mitigation measures remain applicable to the 2025 Project.
Meridian Consultants
3.0-27
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
3.6 TRANSPORTATION / CIRCULATION
3.6.1 Thresriuius
a. Exceed the capacity of the existing circulation system, based on an applicable measure of
effectiveness (as designated in a general plan policy, ordinance, etc.), taking into account all
relevant components of the circulation system, including but not limited to intersections,
streets, highways and freeways, pedestrian and bicycle paths, and mass transit?
b. Conflict with an applicable congestion management program including, but not limited to
level of service standards and travel demand measures, or other standards established by
the county congestion management agency for designated roads or highways?
c. Result in a change in air traffic patterns, including either an increase in traffic levels or a
change in location that results in substantial safety risks?
d. Substantially increase hazards due to a design feature (e.g., sharp curves or dangerous
intersections) or incompatible uses (e.g., farm equipment)?
e. Result in inadequate emergency access?
f. Conflict with adopted policies, plans, or programs supporting alternative transportation (e.g.,
bus turnouts, bicycle racks)?
3.6.2 auiiiiiiai y of Findings in Previous Assessments
The Previous Assessments found that the development of the planned golf courses and resort uses
were consistent with the General Plan land use designations for the site. Based on trip generation
rates for the planned uses, it was estimated that the land uses analyzed in the Previous Assessments
would generate a total of approximately 20,020 daily trips with 1,420 AM peak hour trips and 1,830
PM peak hour trips, if internal trips are not accounted for. This worst case estimate overstates actual
trip generation because it double counts some trips as many of the resort hotel, golf and retail village
trips would be between these different uses and would stay within the Specific Plan Area for this
reason.
The City's General Plan established the level of service (LOS D) as the City's minimum level of service
for intersections. The site is bounded by Jefferson Street, Avenue 52, and Avenue 54. The 2035
forecasted intersection LOS during the peak season based on the recommended intersection
improvements from the 2035 General Plan would result in LOS C during both peak hour periods at
Washington Street and Avenue 52; LOS C during the AM Peak Hour and LOS D during the PM Peak
Hour at Jefferson Street and Avenue 52; and LOS B during both peak hour periods with a new traffic
signal at Jefferson Street and Avenue 54. It should be noted that a new traffic signal has been installed
at the SilverRock Way and Avenue 52 intersection as outlined in MM TRANS-1, resulting in less than
significant impacts to LOS.
The Previous Assessments determined that the project would not impact air traffic as it is not located
in an area that is adjacent to an airport. The nearest airport was approximately 7 miles away from the
Project Site.
Meridian Consultants
3.0-28
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
The Previous Assessments concluded that development of the project would have less than
significant impacts related to hazards and safety from design features (e.g., sharp curves or
dangerous intersections) or incompatible uses (e.g., farm equipment), inadequate emergency
access to nearby uses, insufficient parking capacity on site or off site, and hazards or barriers for
pedestrians or bicyclists. The 2002 MND also concluded that the 2002 MND Project would have no
impacts in regard to conflicts with adopted policies supporting alternative transportation (e.g., bus
turnouts, bicycle racks) and rail, waterborne, or air traffic impacts.
No new information or changed circumstances were identified in the Previous Assessments that
resulted in new or more severe impacts related to transportation and circulation. All impacts
remained less than significant with mitigation identified in the Previous Assessments.
Previously Identified Mitigation Measures
MM TRANS-1 A traffic signal shall be installed at the Project entrance and Avenue 52, the Project
entrance and Jefferson Street and at the intersection of Avenue 54 and Jefferson
Street when and if they are warranted. The developer of the site shall be responsible
for payment of a fair share of the cost of installing these signals.
3.6.3 Existing Conditions
A traffic impact analysis (TIA) was prepared for the 2035 General Plan to assess the existing roadway
network, collect data on and measure the level of use and service along the existing roadways in the
General Plan study area.
The City has developed and maintains an extensive arterial roadway network, serving both local and
inter -city traffic. The City road network has been built essentially along a north -south grid with
interconnections with major arterials passing through adjacent jurisdictions.22 The Project Site is
bounded by Jefferson Street, Avenue 52, and Avenue 54.
Jefferson Street is oriented in a north -south direction and consists of three lanes in each direction. It
is classified as a Major Arterial north of Avenue 54 and as a Modified Secondary Arterial between
Avenue 58 and Avenue 62. Jefferson Street provides access to State Highway 111, southern parts of
the City and to Interstate 10 north of City limits.
Avenue 52 is oriented in an east -west direction and is classified as a Primary Arterial throughout the
City and the City's Sphere of Influence.
Avenue 54 is an east -west street consisting of two lanes in each direction between Jefferson Street
to east of Monroe Street.
22 City of La Quinta. 2035 La Quinta General Plan EIR.
Meridian Consultants
3.0-29
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
Avenue 52 is designated as a Class 3 golf cart path west of SilverRock Way to Eisenhower Drive.
3.6.4 Analysis of Propused Project
An updated trip generation estimate for the 2025 Project is provided in Table 3.6-1: SilverRock Trip
Generation Comparison: 2018 vs. 2025 Master Plan below. As shown in this table, the 2025 Master
Plan would generate approximately 2,800 fewer daily trips than the 2018 Master Plan.
TABLE 3.6-1: SILVERROCK TRIP GENERATION COMPARISON: 2018 VS. 2025 MASTER PLAN
Land Use Units (2018 Plan)
Daily Trips
(2018 Plan)
Units (2025 Plan)
Daily Trips
(2025 Plan)
Golf Course
Hotel
Single -Family
Attached Housing
Single -Family
Detached Housing
Shopping Plaza (40-
150k sq. ft., no
supermarket)
Net Raw Project
Trips
Internal Captures
Net New Project
Trips
27 Holes
820
36 Holes
1,094
340 Rooms
2,717
154 Rooms
1,230
709 Dwelling Units 5,105
323 Dwelling Units 2,326
35 Dwelling Units 330 122 Dwelling Units 1,150
40 x 1,000 sq. ft.
Gross Leasable Area
(GLA)
2,701
40 x 1,000 sq. ft.
GLA
2,701
11,673 8,501
(1,284) (930)
10,389 7,571
Source: Fehr and Peers, 2025. Using Institute of Transportation Engineers' (ITE) Trip Generation Manual, 11th Edition, 2021.
As discussed above, a portion of MM TRANS-1 has already been implemented with the installation
of a traffic signal at the intersection of SilverRock Way and Avenue 52. The 2035 General Plan
projected that the intersection of Jefferson Street and Avenue 54 would operate at Level of Service
(LOS) B with a traffic signal in place. Currently, this intersection remains unsignalized. MM TRANS-1
will be implemented as warranted to ensure that surrounding intersections continue to operate at
LOS D or better.
The 2025 Project would not impact air traffic as it is not located in an area that is adjacent to an
airport. The nearest airport was approximately 7 miles away from the Project Site.
The 2025 Project would not substantially increase hazards due to a design feature (e.g., sharp curves
or dangerous intersections) or incompatible uses because the circulation pattern follows a similar
circulation route planned in the Specific Plan. It should be noted that the 2025 Project proposes a
minor re -alignment of internal roadways, including portions of SilverRock Way and Ahmanson Lane.
This adjustment would shift the road away from its current location between the proposed public golf
clubhouse and the first hole of the Arnold Palmer Golf Course, rerouting it around the clubhouse to
Meridian Consultants
3.0-30 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
improve pedestrian safety. As this modification involves internal circulation and does not affect
external roadways, it would not introduce new hazards related to roadway design or circulation. It
would, however, improve safety on -site, which represents a beneficial impact. Development of all
roads and pedestrian facilities would comply with applicable City standards. The 2025 Project would
adhere to the Project Site's land use designations and would have a lower development intensity
compared to the Previous Assessments, resulting in no conflicts with applicable transportation
regulations and less than significant impacts.
Transportation and circulation impacts associated with the 2025 Project would be similar to those
identified in the Previous Assessment and would be less than significant with the implementation of
TR-1. No new significant impacts or increase in the severity of any previously identified significant
impacts would result from changes to the Project, new information, or changes to the circumstances
under which the Project will be undertaken.
Meridian Consultants
3.0-31 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
3.7 BIOLOGICAL RESOURCES
i nresiiuius
a. Have a substantial adverse effect, either directly or through habitat modifications, on any
species identified as a candidate, sensitive, or special status species in local or regional plans,
policies, or regulations, or by the California Department of Fish and Wildlife or U.S. Fish and
Wildlife Service?
b. Have a substantial adverse effect on any riparian habitat or other sensitive natural
community identified in local or regional plans, policies, and regulations or by the California
Department of Fish and Wildlife or U.S. Fish and Wildlife Service?
c. Have a substantial adverse effect on federally protected wetlands as defined by Section 404
of the Clean Water Act (including, but not limited to, marsh, vernal pool, coastal, etc.) through
direct removal, filling, hydrological interruption, or other means?
d. Interfere substantially with the movement of any native resident or migratory fish or wildlife
species or with established native resident or migratory wildlife corridors, or impede the use
of native wildlife nursery sites?
e. Conflict with any local policies or ordinances protecting biological resources, such as a tree
preservation policy or ordinance?
f. Conflict with the provisions of an adopted Habitat Conservation Plan, Natural Community
Conservation Plan, or other approved local, regional, or state habitat conservation plan?
3.7.2 Summary of Findings in Previous Assessments
Previous Assessments identified that the flat portion of the Project Site had historically been used for
agricultural purposes and the majority of this portion of the site consisted of disturbed non-native
vegetation. Five (5) vegetation communities were identified on the site including disturbed
vegetation, agricultural lands, tamarisk groves, desert saltbush scrub, and mesquite hummocks.
A series of biological surveys were conducted on the Project Site between 1999 and 2002. Focused
surveys for Coachella Valley fringe -toed lizard, flat -tailed horned lizard, Coachella Valley round -
tailed ground squirrel, Palm Springs pocket mouse, Coachella Valley grasshopper and peninsular
bighorn sheep were conducted based on the recommendation of the United States Fish and Wildlife
Service (USFWS) and California Department of Fish and Game (CDFG) (now referred to as California
Department of Fish and Wildlife (CDFW)) in 1999. None of these species were observed on the site.
All other sensitive species were surveyed for in conjunction with these surveys or the previous
surveys.
One species of special concern, the Loggerhead shrike, was observed on the site during the 1999
surveys. A second special -status species, the black -tailed gnatcatcher, was observed on an
adjacent site during 1999 surveys and, for this reason, was considered to have a high potential to be
present on the Project Site. Suitable habitat for these two (2) species comprised very few acres and
the Project Site was not likely to sustain a large population of either species. Previous Assessments
determined the potential impact to these two (2) bird species was not significant.
Meridian Consultants
3.0-32
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
The 2002 MND identified that the Santa Rosa Mountains historically provided habitat for peninsular
bighorn sheep, a state- and federally listed endangered species. Focused surveys performed in 1999
found no evidence of bighorn sheep in the vicinity of the 2002 MND Project Site. Essential habitat of
the peninsular bighorn sheep in this area was defined by the USFWS to include the Santa Rosa
Mountains down to the toe -of -slope. As no development was proposed to infringe above the toe -of -
slope, no portion of the Project Site would have been developed in the essential peninsular bighorn
sheep habitat. However, the Previous Assessments identified mitigation measures to protect the
bighorn sheep. MM BIO-1 to MM BIO-10 were adopted to reduce potential impacts to bighorn sheep
to less than significant levels. MM BIO-1 to MM BIO-10 included incorporating a buffer and fencing
system into the project to prevent the Bighorn Sheep and other wildlife from entering the site,
restricting access by pets into the adjacent open space area, and minimizing indirect impacts to this
open space area from lighting, glare, noise, and harmful landscaping or chemicals. Construction and
design features, including native landscaping, non -glare glass, controlled lighting, and restricted
pesticide use are required by these mitigation measures.
Seven (7) special -status plant species were identified as known to occur in the general vicinity of the
Project Site. A special -status plant survey was completed on the Project Site in April 2000. No
individuals or populations of Coachella Valley milk -vetch were found during these focused surveys.
In addition, no other special -status plant species were observed on the site during these surveys.
One special -status vegetation community, known as mesquite hummocks, was identified within the
Specific Plan Area and impacts to these hummocks were identified as significant. The 2002 MND
identified mitigation to reduce this impact to a less than significant level. MM BIO-11 required that
prior to any construction or site preparation activities that would impact the 3.4 acres of mesquite
hummock, the agency or project developer enter into a Memorandum of Understanding (MOU) with
the California Department of Fish and Wildlife and an appropriate non-profit organization whose
purpose is to acquire and manage land for the purpose of protecting special status plants and
wildlife. The MOU was to provide the organization chosen the financial resources necessary to
purchase and manage 3.4 acres of mesquite hummock in the Willow Hole area or in another area
where the habitat is contiguous and large preserves already protect much of this habitat type.
Previous Assessments found that the requirements of MM BIO-11 have been fulfilled, as a non-profit
organization purchased contiguous mesquite hummock habitat in another area to offset the 3.4
acres of mesquite hummock on -site, resulting in less than significant impacts to mesquite
hummocks.
The 2002 MND identified that a total of 5.29 acres of potential wetlands were present on the Project
Site. A wetland delineation was completed in August 2000 and identified four (4) potential
jurisdictional areas on the 2002 MND Project Site including a system of channels, a swale, and two
(2) excavated retention basins.
Meridian Consultants
3.0-33
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
The 2002 MND determined that because development of the Project Site had the potential to remove
all or some of the potential wetlands on -site and because the area was regulated by state and federal
resource agencies, this loss could be considered a significant impact without the incorporation of
mitigation measures. With implementation of MM BIO-12, requiring federal and State permits for
impacts to these features, impacts would be less than significant.
The Project Site was surrounded on two sides by mostly developed land, consisting of residences,
agricultural crops, and fallow or abandoned cropland. The Santa Rosa Mountains border the western
edge of the Project Site and constitute a large, natural open space area. There was one area adjacent
to and east of the Project Site that contained some native scrub habitat at the time the 2002 MND
was prepared. This area was not directly connected to any large open spaces and the native habitat
adjacent to it was patchy and disjunctive. Subsequently, that area was developed. Therefore,
Previous Assessments determined that the Project did not serve as a wildlife movement corridor
between large open spaces and potential impacts to wildlife movement were less than significant.
Subsequent to the preparation of the 2002 MND, the Project Site was mass graded. MM BIO-12 was
implemented prior to the commencement of on -site grading to mitigate potential impacts to wetland
habitat. The majority of the remainder of the site was planted with barley as a dust control reduction
measure.
The 2014 Addendum identified that the USFWS and CDFW provided the City a notice about urban -
related impacts to the peninsular bighorn sheep in February 2014 because the bighorn sheep were
using golf resort areas to forage and locate water, requiring the installation of a barrier to sheep
access and required the City to provide wildlife agencies with a report with actions to be taken in
order to implement the plan. Since that time, the exclusion fence has been constructed.
The 2014 Addendum found that any future development would be subject to compliance with
specific goals and measures set forth in the Coachella Valley Multiple Species Habitat Conservation
Plan (CVMSHCP). Although the Project Site is not directly within the CVMSHCP Conservation Areas,
the Project Site is located adjacent to the Santa Rosa and San Jacinto Mountain Conservation Areas.
Thus, the 2035 General Plan requires the project to incorporate project design features (PDFs) BIO
PDF-1, BIO PDF-6 and BIO PDF-9 by ensuring that the developer pay applicable mitigation fees and
work to guarantee the safe protection of burrowing owls and migratory birds that may reside on the
Project Site. With the incorporation of the PDFs, impacts to biological resources on the Project Site
would be reduced to less than significant levels.
No new information or changed circumstances were identified in the Previous Assessments that
resulted in new or more severe impacts related to biological resources. All impacts remained less
than significant with implementation of MM BIO-1 through MM BIO-12 and with the incorporation of
BIO PDFs 1, 6 and 9.
Meridian Consultants
3.0-34
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
Previously Identified Mitigation Measures
MM BIO-1
MM BIO-2
MM BIO-3
MM BIO-4
A mountain toe -of -slope buffer/mitigation concept plan has been prepared to
protect peninsular Bighorn Sheep, and other wildlife, from entering the non -
mountainous portion of the site proposed for development. This concept plan
illustrates a continuous buffer to the toe -of -slope in areas where development could
occur adjacent to the mountain edge. The concept plan delineates the location,
acreage and native plant species envisioned for the mitigation area. This plan shall
be incorporated into the project design and shall be subject to review by the City prior
to the issuance of grading permits. A copy of this mountain toe -of -slope
buffer/mitigation concept plan is available for review at the City of La Quinta
Community Development Department.
If Bighorn Sheep enter into the Project Site, an 8-foot fence (or the functional
equivalent) between the development and the hillside shall be constructed. The gaps
should be 11 centimeters (4.3 inches) or less. If determined necessary, the City shall
construct temporary fencing while permanent fencing is constructed. The fence shall
not contain gaps in which Bighorn Sheep can be entangled. If the Department
transfer or disposes of any of the property adjacent to the hillside, the Department
shall reserve an easement sufficient for the construction of fencing if needed in the
future.
Dogs shall not be permitted to be loose within the Project area, and shall be kept
away from the hillside areas through appropriate signage and fencing, where
applicable.
Access into the hillside area from the site will be discouraged through the use of signs
or barricades, if necessary, unless the access is provided as part of a trail system that
is approved by the USFWS and CDFG.
MM BIO-5 A construction plan shall be prepared and provide, to the extent practicable,
construction activities that emit excessive noise will be avoided adjacent to the
hillside. In addition, during grading and construction activities any blasting or pile -
driving near the hillside will not occur during the period from January 1 through June
30.
MM BIO-6 The final design of the Project shall insure that road and driveways are designed to
minimize headlight shine from vehicles onto the hillside.
MM BIO-7 In all areas adjacent to the hillsides, non -glare glass shall be used in new
construction. Exterior building lights shall not shine on the hillside. Exterior lighting
shall be kept at the safest possible minimum intensity and aimed away from the
hillside.
MM BIO-8 The landscape plan shall include only plants that are non -toxic to wildlife. AR exotic
plans such as tamarisk and fountain grass are prohibited. Existing trees may remain.
Meridian Consultants
3.0-35
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
MM BIO-9 All swimming pools located in the Project Site shall be fenced pursuant to City
regulations.
MM BIO-10 Efforts shall be made to ensure that all pesticides, fungicides, herbicides, and
fertilizers used during the construction and operation of the Project Site will not be
harmful to wildlife.
MM BIO-11
Prior to any construction or site preparation activities that would impact the 3.4 acres
of mesquite hummock, the agency or project developer shall enter into a
Memorandum of Understanding (MOU) with CDFG and an appropriate non-profit
organization whose purpose is to acquire and manage land for the purpose of
protecting special status plants and wildlife. This MOU shall provide the organization
chosen the financial resources necessary to purchase and manage 3.4 acres of
mesquite hummock in the Willow Hole area or in another area where the habitat is
contiguous and large preserves already protect much of this habitat type.
MM BIO-12 Prior to the commencement of on -site grading, a 404 permit shall be obtained, if
legally required, for alteration of areas under the Army Core of Engineers (ACOE)
jurisdiction. In addition, if development activities are to take place within streambeds
or drainages under the jurisdiction of the CDFG, a streambed alteration agreement
shall first be obtained, if legally required.
Previously Identified Project Design Features
Previously identified project design features from the 2035 General Plan include:
BIO PDF-1 The City shall require payment of Coachella Valley Multiple Species Habitat
Conservation Plan mitigation fees prior to issuance of occupancy permits for
development projects required to pay such fees.
BIO PDF-6
BIO PDF-9
Prior to the issuance of any ground disturbing permit for qualifying projects in a
Conservation Area, the City shall require a protocol complaint survey for Burrowing
Owl, in compliance with the MSHCP Section 4.4.
In compliance with the requirements of the Migratory Bird Treaty Act (MBTA), the City
shall continue to require that for development projects proposing removal of
vegetation between March and August, a qualified biologist shall be retained to
determine whether any bird nests or young occur on the site, and if they occur, to
provide mitigation measures compliant with the MBTA.
3.7.3 Existing Conditions
The Project Site has been mass graded and contains the Arnold Palmer Golf Course, Ahmanson
House, and partially developed hotel and residential buildings from previous approvals. The Arnold
Palmer Golf Course is located on the most western portion of the site along the edge of the Santa
Rosa Mountains, a known habitat for the peninsular bighorn sheep. There is no riparian habitat
Meridian Consultants
3.0-36
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
present on the Project Site. A Bighorn sheep exclusion fence along the toe of slope has been
constructed within the Project site.
The City is a signatory and participant for the CVMSHCP. The Project Site is located adjacent to the
Santa Rosa and San Jacinto Mountains Conservation Area. The City collects a CVMSHCP fee for
applicable projects and collects the fee at permit issuance.
a.7.4 Analysis of Proposed Proj :LL
As discussed above, the Previous Assessments incorporated MM BIO-11 and MM BIO-12 before
mass grading the entire Project Site, resulting in less than significant impacts to biological resources
within the Project Site. Those mitigation measures have now been satisfied and are no longer
applicable to project implementation. At the time the 2014 Addendum was prepared, a notice was
provided that bighorn sheep were seen grazing on the Project Site, prompting CDFW to require a
fence built within a year. The fence has been built and completed. MM BIO-1 and MM BIO-10 are still
applicable to the 2025 Project to ensure less than significant impacts to the bighorn sheep.
As the Project Site is located adjacent to the Santa Rosa and San Jacinto Mountain Conservation
Areas, the General Plan requires the 2025 Project to incorporate BIO PDF-1, BIO PDF-6 and BIO PDF-
9 by ensuring that the developer pays all applicable mitigation fees not previously paid and ensuring
the safe protection of burrowing owls and migratory birds that may reside on the Project Site through
compliance with the requirements of the MBTA. With the incorporation of the PDFs, impacts to
biological resources on the Project Site would be reduced to less than significant. Biological resource
impacts associated with the 2025 Project would be similar to impacts identified in the Previous
Assessments and would be less than significant with the implementation of mitigation measures and
project design features. No new information, changed circumstances, or more severe impacts would
occur with the implementation of the 2025 Project.
Meridian Consultants
3.0-37 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
3.8 ENERGY AND MINERAL RESOURCES
3.8.1 i nresriuids
a. Result in the loss of availability of a known mineral resource that would be of value to the
region and the residents of the state?
b. Result in the loss of availability of a locally -important mineral resource recovery site
delineated on a local general plan, specific plan or other land use plan?
3.8.2 summary of Findings in Previous Assessments
As identified in the Previous Assessments, the uses proposed were determined to be consistent with
the City's General Plan. As all development analyzed in the Previous Assessments would conform to
standard energy efficient building codes, no significant impacts to energy consumption would occur.
Non-renewable resources, such as natural gas, petroleum products, petrochemical construction
materials, steel, copper and other metals, sand and gravel are considered to be commodities which
are available in a finite supply. If not consumed by the Project, these non-renewable resources would
likely be committed to other projects in the region intended to meet the anticipated growth outlined
in the General Plan. Furthermore, the investment of resources in the development of the Specific
Plan would be typical of the level of investment normally required for a project of similar scale.
The Previous Assessments identified that the Project Site is located within a MRZ (Mineral Resource
Zone)-1, which is defined as areas where adequate information indicates that no significant mineral
deposits are present, or where it is judged that little likelihood exists for their presence.23 Most of the
developable areas in the City are located in areas with a minimal presence of significant mineral
deposits, and no impacts to mineral resources were identified in the Previous Assessments.
No new information or changed circumstances were identified in the Previous Assessments that
resulted in new or more severe impacts related to energy or mineral resources. All impacts remained
less than significant.
Existing Conditions
The City's Municipal Code requires that all utilities in new residential districts and subdivisions be
undergrounded.24 All new construction of residential and non-residential buildings in the City is
required to abide by the Energy Efficiency Standards implemented through California Building Code
(CBC) Title 24 in place at the time construction occurs.
23 City of La Quinta, 2035 La Quinta General Plan. Energy and Mineral Resources, Mineral Resource Zone Map, Exhibit
III-1 (2013).
24 City of La Quinta. 2035 La Quinta General Plan EIR.
Meridian Consultants
3.0-3 8 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
The Project Site is located within the MRZ (Mineral Resource Zone)-1, which is defined as areas where
adequate information indicates that no significant mineral deposits are present, or where it is judged
that little likelihood exists for their presence.25
Analysis or rroposed Project
The 2025 Project would use less energy than analyzed in the Previous Assessments due to the
reduction in intensity of land uses compared to the Previous Assessments. The 2025 Project would
comply with the Energy Efficiency Standards set forth in the CBC, including the installation of solar
panels on residential units, currently in effect. Energy efficiency standards for development have
increased since the Previous Assessments and the 2025 Project would incorporate the latest CBC
standards.
The Project Site is designated MRZ-1; therefore, implementation of the 2025 Project would not result
in the loss of availability of a locally -important mineral resource considered valuable in the region
and state.
Energy and mineral resource impacts associated with the 2025 Project would be similar to impacts
identified in the Previous Assessments and would be less than significant. No new information,
changed circumstances, or more severe impacts would occur with the implementation of the 2025
Project.
25 City of La Quinta. 2035 La Quinta General Plan. Energy and Mineral Resources. Mineral Resource Zone Map. "Exhibit
III-1." 2013.
Meridian Consultants
3.0-39 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
g.
3.9 HAZARDS AND HAZARDOUS MATERIALS
3.9.1
i nresiiuius
a. Create a significant hazard to the public or the environment through the routine transport,
use, or disposal of hazardous materials?
b. Create a significant hazard to the public or the environment through reasonably foreseeable
upset and accident conditions involving the release of hazardous materials into the
environment?
c. Emit hazardous emissions or handle hazardous or acutely hazardous materials, substances,
or waste within one -quarter mile of an existing or proposed school?
d. Be located on a site which is included on a list of hazardous materials sites compiled pursuant
to Government Code, Section 65962.5 and, as a result, would it create a significant hazard
to the public or the environment?
e. For a project located within an airport land use plan or, where such a plan has not been
adopted, within 2 miles of a public airport or public use airport, would the project result in a
safety hazard for people residing or working in the project site?
f. For a project within the vicinity of a private airstrip, would the project result in a safety
hazard for people residing or working in the project site?
Impair implementation of or physically interfere with an adopted emergency response plan
or emergency evacuation plan?
h. Expose people or structures to a significant risk of loss, injury, or death involving wildland
fires, including where wildlands are adjacent to urbanized areas or where residences are
intermixed with wildlands?
�.� Summary of Findings in Previous Assessments
The Project Site previously contained an abandoned single-family residence and related agricultural
buildings. As part of the 2002 MND, a Phase I Environmental Site Assessment (ESA) was prepared
and determined that asbestos was present in some of the building materials of the abandoned
single-family residence. The abandoned single-family residence and related agricultural buildings
were then demolished, and the Ahmanson House was renovated with the implementation of MM
HAZ-1, which ensured the safe removal of asbestos from the Project Site according to applicable
regulations.
The Phase I ESA also indicated a potential hazard related to the presence of residual pesticides and
herbicides related to previous agricultural uses of the site. Recommendations included mixing upper
surface soils to reduce the concentration of residual pesticides and herbicides. Onsite soils were
mixed to reduce these concentrations.
Previous Assessments found that the Project Site was located approximately one (1) mile from two
underground storage tanks (UST), one at the Oak Tree West property and the other at the Landmark
Lease site. The Oak Tree West property was included on the leaking underground storage tank (LUST)
list and the Landmark Lease site was included on the historical UST list. The Oak Tree West site was
remediated and is listed as a closed case. The Landmark Lease site had no reported violations, as
Meridian Consultants
3.0-40
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
the underground tanks were removed and closed by the appropriate regulatory agency and no further
study or investigation was warranted.
The development of the Project Site with the planned golf course and resort uses was not determined
to pose a substantial risk of the release of hazardous materials. Further, Previous Assessments
identified that the planned uses would not pose any health hazard or potential health hazard to
visitors and nearby residences.
Previous Assessments identified that the Project Site is not within the vicinity of a public use airport
or a private airstrip. The nearest public use airport is the Bermuda Dunes Airport, located
approximately seven (7) miles north of the Project Site. Jacqueline Cochran Regional Airport, a
County -owned public use airport, is located approximately 10 miles east from the Project Site.
The City contracts with Riverside County Fire Department (RCFD) for emergency services, and the
City's Emergency Services Division is responsible for preparing the community for disasters and
emergencies. The 2035 General Plan will facilitate new development and consequently increase
population within the City. Any increase in population has the potential to impact emergency
response and evacuation plans. Previous Assessments concluded that development of the Project
Site would not induce population growth.
Previous Assessments found that development of the Project Site would not interfere with any
adopted emergency response or evacuation plan since development of the Project Site would not
obstruct the existing or planned circulation network. The Project Site is within a low wildfire risk zone
and as such, wildland fire impacts would be less than significant.
No new information or changed circumstances were identified in the Previous Assessments that
resulted in new or more severe impacts related to hazardous and hazardous materials. All impacts
remained less than significant.
Previously Identified Mitigation Measures
MM HAZ-1
Prior to the demolition or renovation of the on -site family residence, asbestos -
containing materials (ACM) shall be removed in accordance with current regulatory
guidelines.
3.9.3 Existing Conditions
The City is within an urbanized area in the Coachella Valley, which has the potential for exposure to
hazards and hazardous materials.26 The County has developed a Hazardous Waste Management
26 City of La Quinta. 2035 La Quinta General Plan EIR.
Meridian Consultants
3.0-41
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
Plan (HWMP), which addresses the proper disposal, processing, handling, storage, and treatment of
hazardous materials.27
The City's Emergency Services Division is responsible for responses to disasters and emergencies.
The City has prepared the Emergency Operations Plan to plan and prepare for emergencies. The City
established Code Red, which is an ultra -high-speed telephone communication service that provides
emergency notifications to residents during emergencies. The City is also involved in the Community
Emergency Response Team (CERT) program, which educates volunteers in the community about
disaster preparedness and trains them in basic disaster response skills. The CERT group is organized
to support the City during emergencies or disasters.
The California Department of Transportation (Caltrans), California Highway Patrol (CHP), and the US
Department of Transportation regulate hazardous materials, and the cleanup and containment of
accidents. Emergency evacuation and response plans, such as Code Red, are already developed in
the City to provide automated notifications to residents during an emergency, including hazardous
waste spills.28
The City is located at the base of the Santa Rosa Mountains; however, these areas are considered
low wildfire zones as are the flat urbanized areas of the City. The Project Site is not on land classified
as a Fire Hazard SeverityZone.29 The Project Site is not located within a site that is included on a list
of hazardous materials sites compiled pursuant to Government Code, Section 65962.5 (Cortese
List).
3.9.4 Analysis of Proposed Project
As discussed above, the Project Site no longer has hazards associated with it after the
implementation of MM HAZ-1. The Project Site has been mass graded and contains the Arnold Palmer
Golf Course, Ahmanson House, and partially developed hotel and residential buildings from previous
approvals.
The uses included in the 2025 Project are similar to the surrounding land uses in proximity to the
Project Site, which consists of other golf and residential communities. The 2025 Project could involve
the temporary use of hazardous substances in the form of paint, adhesives, surface coatings and
other finishing materials and cleaning agents, fuels, and oils typically used in construction. The
transport, use and disposal of construction related hazardous materials would occur in
conformance with all applicable local, State, and federal regulations governing such entities. Similar
to the planned uses analyzed in Previous Assessments, the 2025 Project's proposed uses would not
pose a substantial risk of release of hazardous materials, and planned uses would not pose any
27 City of La Quinta. 2035 La Quinta General Plan EIR.
28 City of La Quinta. 2035 La Quinta General Plan EIR.
29 CalFire. "Fire Hazard Severity Zones." Accessed July
2025. https://experience.arcgis.com/experience/03beab8511814e79a0e4eabf0d3e7247/.
Meridian Consultants
3.0-42
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
health hazard or potential health hazard to visitors or surrounding uses. The Project Site is not
located within a site that is included on the Cortese List.3o,31
The Project Site is not within one -quarter mile of an existing or proposed school. The nearest school
is Harry S Truman Elementary School, located at 78870 Avenue 50, approximately 0.9 miles north of
the Project Site.
The Project Site is not within the vicinity of a public use airport or a private airstrip. The nearest public
use airport is the Bermuda Dunes Airport, approximately seven (7) miles from the Project Site.
The City contracts with RCFD for emergency services, and the City's Emergency Services Division is
responsible for preparing for disasters and emergencies. As described in detail in Section 3.2
Population and Housing, the 2025 Project would generate a population increase of approximately
1,690 people, which does not represent a substantial increase, as this increase would represent
approximately 9.9 percent of the growth projected from 2025 to 2050. The 2025 Project's proposed
residential uses would not induce substantial population growth within the City, and the 2025 Project
would reduce the overall residential and hotel uses when compared to the Previous Assessments.
The 2025 Project would not obstruct or interfere with the existing circulation network surrounding the
Project Site because the 2025 Project would not alter the existing street system. Additionally, the
2025 Project would have a lower development intensity compared to the land uses analyzed in the
Previous Assessments, which would reduce circulation impacts compared to the Previous
Assessments. Therefore, the 2025 Project would not interfere with any adopted emergency response
or evacuation plans.
The 2025 Project's proposed uses would not create a fire hazard that has the potential to exacerbate
the current environmental condition relative to wildfires. The 2025 Project would be developed in
accordance with requirements pertaining to fire safety. The 2025 Project would not expose people or
structures, directly or indirectly, to a significant risk of loss, injury, or death as a result of exposure to
wildland fires.
Hazards and hazardous materials associated with the 2025 Project would be similar to those
identified in the Previous Assessments and would be less than significant. No new significant
impacts or increase in the severity of any previously identified significant impacts would result from
changes to the 2025 Project, new information, or changes to the circumstances under which the
2025 Project will be undertaken.
30 State Water Resources Control Board. "GeoTracker." Accessed July 2025. https://geotracker.waterboards.ca.gov/.
31 Department of Toxic Substances Control. "EnviroStor." Accessed July 2025.
https://www.envirostor.dtsc.ca.gov/public/search?basic=True.
Meridian Consultants
3.0-43 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
3.10 NOISE
3.10.1 i nresriolds
a. Exposure of persons to or generation of noise levels in excess of standards established in the
local general plan or noise ordinance, or applicable standards of other agencies?
b. Exposure of persons to or generation of excessive groundborne vibration or groundborne
noise levels?
c. A substantial permanent increase in ambient noise levels in the project vicinity above levels
existing without the project?
d. A substantial temporary or periodic increase in ambient noise levels in the project vicinity
above levels existing without the project?
e. For a project located within an airport land use plan or, where such a plan has not been
adopted, within 2 miles of a public airport or public use airport, would the project expose
people residing or working in the project site to excessive noise levels?
f. For a project within the vicinity of a private airstrip, would the project expose people residing
or working in the project site to excessive noise levels?
3.10.2 Summary of i-inaings in Previous Assessments
The Previous Assessments determined that construction noise would occur throughout
development with most of the noise intensive activities occurring at the beginning of development
when the site was cleared and graded. Noise intensive activities typically involve the use of heavy
equipment, including scrapers, loaders, tractors, and concrete mixers. Trucks would be used during
construction to deliver equipment and building materials, as well as haul away waste materials.
Additionally, the Previous Assessments noted that smaller equipment, including jack hammers,
saws, pneumatic tools, and hammers, would also be used during construction. This equipment
would generate steady state and episodic noise that could be heard on- and off -site, potentially
causing construction noise impacts to the surrounding area. The site is surrounded by a residential
subdivision and golf course to the north, a residential subdivision and golf course to the east, PGA
west golf course and residential community to the south, and the mountains to the west. The noise
generated during the construction phase would typically affect the occupants of nearby residences;
however, the majority of development would take place at the interior of the site with activities for a
planned golf course along the exterior of the site. The Previous Assessments noted that construction
activity would be short-term and would not result in significant impacts with the incorporation of MM
N-1 through MM N-3, which would restrict construction hours, add mufflers to noise equipment as
applicable, and keep earth moving and hauling routes away from existing residences to the extent
possible.
The 2035 General Plan projected noise levels on streets adjacent to the Project Site for 2035. The 65
A -weighted decibel Community Noise Equivalent Level (dBA CNEL) noise contour along Jefferson
Street between Avenue 52 and Avenue 53 would be 239 feet from the centerline. The CNEL noise
level 100 feet from the centerline of Jefferson Street between Avenue 52 and Avenue 54 would be
Meridian Consultants
3.0-44
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
70.7 dBA. The 65 dBA CNEL noise contour along Avenue 52 west of Jefferson Street would be 220 feet
from the centerline. The CNEL noise level 100 feet from the centerline of Avenue 52 west of Jefferson
Street would be 70.1 dBA. The Previous Assessments found that traffic noise impacts would not
significantly impact the project. The proposed golf courses planned to be developed on the edges of
the Project Site would serve as a buffer from adjacent noise sources. Additionally, the golf course
would also attenuate noise levels from the uses proposed in the interior of the Project Site to uses
off -site. However, operational noise from the project could potentially impact nearby sensitive
receivers such as residences. With the incorporation of MM N-4 and MM N-5, which would
strategically place and silence mechanical and outdoor equipment, operational noise impacts
related to the project would be less than significant.
The Previous Assessments identified the nearest public use airport as Bermuda Dunes Airport,
located approximately seven miles from the Project Site. The Project Site is not located within two
miles of a public airport or public use airport and is not located within the vicinity of a private airstrip.
No new information or changed circumstances were identified in the Previous Assessments that
resulted in new or more severe impacts related to noise. All impacts remained less than significant
with the incorporation of mitigation measures identified in the Previous Assessments.
Previously Identified Mitigation Measures
MM N-1
Between May 1 and September 30, all construction activities on the Project Site shall
only occur between the hours of 6:00 AM and 7:00 PM Monday through Friday, and
from 8:00 AM to 5:00 PM on Saturday, and shall be prohibited on Sundays and public
holidays. Between October 1 and April 30, all construction activity on the Project Site
shall only occur between the hours of 7:00 AM and 5:30 PM Monday through Friday,
and from 8:00 AM to 5:00 PM on Saturday, and shall be prohibited on Sundays and
public holidays. All operational activities of the SRR SP shall also be subject to the
Noise Ordinance of the City as well.
MM N-2 All construction equipment operating in the planning area shall be fitted with well -
maintained functional mufflers to limit noise emissions.
MM N-3 To the greatest extent feasible, earth moving and hauling routes shall be located
away from existing residences.
MM N-4 The design, selection, and placement of the mechanical equipment for various
buildings shall include consideration of the potential noise impact they may have on
uses within the development site.
MM N-5
Silencers and/or barriers shall be provided where necessary at outdoor equipment,
such as cooling towers, air cooled condensers, and refrigeration
compressors/condenser units, and at the air intake and discharge openings for
building ventilation systems.
Meridian Consultants
3.0-45
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
3.10.3 Existing Conditions
The Project Site includes an existing golf course, the Ahmanson House, which is currently used as a
clubhouse for the Arnold Palmer Classic Golf Course, and a series of partially constructed buildings
associated with the previous approvals located in the western portion of the Project Site. There are
no sensitive uses located on -site.
The primary source of noise in the City and sphere of influence is traffic. The nearest sensitive
receptors to the Project Site are the residential uses to the east along Deacon Drive East, to the north
along Avenue 52, to the east along Jefferson Street, and to the south along Avenue 54.
Noise standards in the City allow sensitive land uses to experience a maximum noise level of 65 dbA
CNEL in outdoor living areas (patios, balconies, and rear yards).
3.10.4 Analysis of Proposed Project
Construction
Noise intensive construction activities would be similar to those previously analyzed. These
construction activities typically involve the use of heavy equipment, including scrapers, tractors,
loaders, and concrete mixers. Construction of buildings within the Project would involve less heavy
equipment, because grading has occurred, but would still generate noise from the use of smaller
equipment, including jackhammers, pneumatic tools, saws, and hammers. This equipment would
generate both steady state and episodic noise that would be heard both on- and off -site, consistent
with the analysis in the Previous Assessments.
Vibration levels due to on -site construction activities would not exceed the building damage
significance threshold for vibratory rollers, large bulldozers, caisson drilling, loaded trucks,
jackhammers, and small bulldozers at a reference distance of 50 feet or at the nearest sensitive
receptors. The nearest sensitive receptors are located over 125 feet away to the west of the Project
across Deacon Drive East. Construction would not generate excessive groundborne vibration.
The 2025 Project would comply with the standards set forth by the La Quinta Municipal Code which
are identified in MM N-1. Furthermore, the surrounding uses have masonry walls which act as noise
barriers which would reduce temporary noise during construction. Construction -related noise
impacts would be similar to the impacts identified in the Previous Assessments and with the
incorporation of MM N-1 through MM N-3 would be less than significant. Impacts would be less than
significant and no new information, changed circumstances, or more severe impacts were identified for
the 2025 Project.
Meridian Consultants
3.0-46
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
Operation
Primary sources of noise throughout the City are caused primarily by motor vehicle traffic on City
streets, particularly major roadways.32 Other noise generators in the City include those associated
with commercial uses, including mechanical equipment, such as fans, motors, and compressors.
As discussed in Section 3.6: Transportation/Circulation, the proposed Project would reduce the
number of daily vehicle trips by approximately 2,800 trips when compared to the 2014 Addendum.
The 2025 Project would have a reduced development intensity compared to the land uses analyzed
in the Previous Assessment. However, the vehicles entering and exiting the site would follow similar
trip distribution patterns as those identified in the Previous Assessments. Noise levels from vehicles
would remain similar, but slightly reduced from noise levels identified in the Previous Assessments.
On -site sensitive uses include the hotel and resort residential units. The distance from the centerline
between the golf courses and commercial uses surrounding the edges of the site and the sensitive
on -site uses would reduce noise levels below 65 dBA CNEL.
As discussed previously, the City's Municipal Code establishes base ambient noise level limits for
noise sensitive and other non-residential uses based on time of day. The 2025 Project would adhere
to the standards set forth by the Municipal Code and incorporate MM N-4 or MM N-5 to reduce
operational noise impacts to less than significant levels.
The Project Site is not located within two miles of a public airport or public use airport and would not
expose people residing or working in the Project Site to excessive noise levels.
Noise impacts would be similar to impacts identified in the Previous Assessments and would be less
than significant with the incorporation of MM N-1 through MM N-5. No new information, changed
circumstances, or more severe impacts would occur with the implementation of the proposed
Project.
32 City of La Quinta. 2035 La Quinta General Plan EIR.
Meridian Consultants
3.0-47
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
3.1 1 PUBLIC SERVICES
3.11.1 Thresholds
a. Would the project result in substantial adverse physical impacts associated with the provision
of new or physically altered governmental facilities, need for new or physically altered
governmental facilities, the construction of which could cause significant environmental
impacts, in order to maintain acceptable service ratios, response times or other performance
objectives for any of the public services:
i) Fire Protection?
ii) Police Protection?
iii) Schools?
iv) Libraries?
3.1 1.2 Summary of Findings in Previous Assessments
Fire Protection
Previous Assessments analyzed existing fire service and the potential demand for fire service with
the development of the project. Development of the project could potentially cause significant fire
service demands. Previous Assessments determined that with implementation of MM PUB-1, which
requires projects to be reviewed by the Riverside County Fire Department (RCFD) to ensure adequate
fire services would be provided at the time of site development, impacts would be reduced to a less
than significant level. The project analyzed in Previous Assessments would pay applicable fire
protection Development Impact Fees to ensure there is adequate funding of fire protection services.
Police Protection
Previous Assessments analyzed existing police protection services and the potential demand for
police protection services with development of the project. Individual development projects are
reviewed by the Riverside County Sheriff's Department (RCSD) to ensure adequate police services
would be provided at the time of site development. Previous Assessments found that with the
implementation of MM PUB-2, which requires the RCSD review new development proposals in order
to evaluate the RCSD's ability to provide adequate police protection, impacts would be reduced to a
less than significant level.
Schools
There are two (2) public school districts that serve the City, Desert Sands Unified School District
(DSUSD), and the Coachella Valley Unified School District (CVUSD). The Project Site is within the
DSUSD service area. Previous Assessments identified that the Proposed Agreements would generate
seasonal population growth and would incrementally introduce a small number of seasonal
residents similar to those identified in the growth projections from the City's 2035 General Plan. The
proposed development analyzed in Previous Assessments would require payment of applicable
school fees. No significant impacts would occur.
Meridian Consultants
3.0-48
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
Libraries
The La Quinta Library, a city -owned library facility, would serve the Project Site. Previous
Assessments identified that the Proposed Agreements would not introduce any permanent residents
or result in permanent population growth. There would be a minimal demand for public library
services. Any applicable developer fees would have been paid prior to the issuance of building
permits.
No new information, changed circumstances, or more severe impacts were identified in Previous
Assessments.
Previously Identified Mitigation Measures
MM PUB-1
MM PUB-2
The Riverside County Fire Department, in its review of new development proposals,
shall evaluate project plans and the Department's ability to provide proper fire
protection. This review shall include, but shall not be limited to, internal circulation,
project directories, street names, and numbering systems. New developments shall
comply with all City and Fire Department standards.
The Riverside County Sheriff's Department shall review new development proposals
in order to evaluate project plans and the Department's ability to provide adequate
police protection. This review should include, but not be limited to internal
circulation, project directories, street names, and numbering systems. New
developments shall comply with all established City and Sheriff standards.
3.11.3 existing Conditions
Fire Protection
Fire protection for the City is provided through a contract with the RCFD. The two closest City -owned
fire stations located within the City are staffed with both full-time paid and volunteer firefighters. Fire
Station Number 32 is located at 78-111 Avenue 52, approximately 0.7 miles west of the Project Site
and is equipped with both primary and reserve fire engines, along with volunteer squad and rescue
vehicles. Fire Station Number 70 is located at 54001 Madison Street, approximately 0.9 miles
southeast of the Project Site and is equipped with a primary engine, a brush fire engine, and a
volunteer squad vehicle. Currently, average RCFD response times are within the acceptable County
standard and align with the National Fire Protection Association (NFPA) guidelines, between 5 and 7
m i n utes.33
33 Cal Fire Riverside Unit Riverside County Fire Department. "RE: East Lake Plan Amendment #11 Project Request for
Information." Accessed July 2025. https://www.lake-elsinore.org/DocumentCenter/View/1926/Appendix-J---
Correspondence-with-Police-and-Fire-PDF#::text=Type%201 %20Engine-
,(structu ral%20fi refighting%20a ppa ratus).,stations%20to%20the%20project%20site?.
Meridian Consultants
3.0-49
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
Police Protection
The City contracts with the RCSD for police staffing. As detailed in the 2035 General Plan, the City
contract provided for 51 sworn officers and 5 community service officers. The RCSD operates an
office within City Hall. A regional station is located in Thermal, which acts as the department's central
facility. The La Quinta Police Department is located approximately 0.5 miles northwest of the Project
Site.
The RCSD maintains a staffing level of one staff per 1,000 population; however, the City does not
maintain a staffing ratio and staffing is based on the safety needs of the community and the available
resources to provide for safety needs. As of January 1, 2025, DOF estimates that the City has a
population of approximately 38,796 residents, which would place the level of police staffing at 1.31
staff per 1,000 population.34,35
Schools
The Project Site is within the DSUSD service area.
Libraries
The La Quinta Library, a city -owned library facility, is located at 78-275 Calle Tampico and operated
by the County. The La Quinta Library is approximately 0.6 miles northwest of the Project Site.
3.1 1.4 Analysis of Proposed Projecu.
Fire Protection
The 2025 Project includes the development of a golf course, hotel, residences, and commercial land
uses that increase the fire protection services compared to existing conditions. However,
development of the 2025 Project would have a lower development intensity compared to the land
uses analyzed in the Previous Assessments. The 2025 Project would implement MM PUB-1, which
would ensure that the 2025 Project adheres to all RCFD's regulations for proper fire protection.
Additionally, the 2025 Project would pay the fire protection Development Impact Fee as applicable
at the time building permits are issued. Therefore, fire protection impacts associated with the
development of the 2025 Project would be similar to those previously analyzed, and less than
significant with mitigation.
Police Protection
As was the case in Previous Assessments, individual development projects are reviewed by the RCSD
to ensure that adequate police services would be provided to the 2025 Project at the time of
34 Staffing and service ratios for the RCSD were sourced from the City of La Quinta's 2035 General Plan, which provides
the most recent available information.
35 (51 sworn officers / 38,796 residents) x (X officers / 1,000 residents) = 1.31 officers per 1,000 residents.
Meridian Consultants
3.0-50
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
development. As described in Previous Assessments, the implementation of MM PUB-2 would
ensure impacts to police protection would be less than significant. The 2025 Project would pay
applicable development fees that fund the expansion of essential public facilities such as police
protection. Therefore, police protection impacts associated with the development of the 2025
Project would be less than significant with mitigation.
Schools
As mentioned above, the DSUSD district provides school services to the Project Site. The 2025
Project includes approximately 599 hotel/residential units. As described in Section 3.2: Population
and Housing, the 2025 Project's proposed 599 units would generate a population increase of 1,690
people. However, the addition of 1,690 people would not represent a substantial increase, as the
2025 Project's increase in population would represent approximately 9.9 percent of the growth
between 2025 to 2050.
Table 3.11-1: School District Generation Rates and Student Generation shows the projected
number of students that would be generated by the 2025 Project. These projections are based on
elementary, middle and high school student generation rates used by DSUSD. Student generation
rates were derived from the DSUSD's Fee Justification Study.36 As indicated in the table, the 2025
Project would generate an estimated total of 216 new students, consisting of 92 new elementary
school students, 52 middle school students, and 72 high school students. It is possible that
residents and students would relocate from elsewhere in the DSUSD service area; however, as a
conservative measure, this analysis assumes all new students within this school district.
36 Desert Sands Unified School District (DSUSD). "Fee Justification Study for New Residential and
Commercial/Industrial Development." 2020. Accessed July 2025. https://cdnsm5-
ssl 8.sharpschool.com/Userfiles/D BFiles/server_24405182/202005/30304416. pdf.
Meridian Consultants
3.0-51
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
TABLE 3.11-1: SCHOOL DISTRICT GENERATION RATES AND STUDENT GENERATION
School District
Maximum
Projected Units
Grade
Group
Student Generation Students Generated
Rates (students per by the Project
dwelling unit)
Desert Sands Unified
School District
599
599
599
K-5
6-8
9-12
0.1543
0.0867
0.1203
92
52
72
otal Students
216
Source: DSUSD. "Fee Justification Study for New Residential and Commercial/Industrial Development." 2020. Accessed July
2025. https://cdnsm5-ssl8.sharpschooLcom/Userfiles/DBFiles/server_ 24405182/202005/30304416.pdf.
Table 3.11-2: Project School Enrollment and Capacities compares the projected enrollment at
schools serving the Project area to the current capacity of those schools.37 Based on the current
enrollment and projected number of students generated by the 2025 Project, implementation of the
2025 Project would put DSUSD at approximately 100.6 percent capacity with a total of 28,209
students.
TABLE 3.1 1-2: PROJECT SCHOOL ENROLLMENT AND CAPACITIES
School District Capacity
Current Current % of Students Projected projected % of
Enrollment Capacity Generated by Enrollment Capacity
Project with Project
Desert Sands Unified
School District
28,031
27,993 99.86%
216 28,209 100.6%
Source: DSUSD. "Fee Justification Study for New Residential and Commercial/Industrial Development." 2020. Accessed July
2025. https://cdnsm5-ssl8.sharpschool.com/Userfiles/DBFiles/server_ 24405182/202005/30304416.pdf.
As described in the Previous Assessments, the 2025 Project would comply with the State -mandated
school impact fees under SB 50, which are deemed to be full and complete mitigation of the impacts
of new development on schools. School impact fees would ensure that impacts of the 2025 Project
would be less than significant.
Libraries
The Project Site would be served by the La Quinta Public Library. According to the American Library
Association (ALA), the minimum standard for public library space was 1.0 square feet per resident in
the library's service area.38 As of January 1, 2025, DOF estimates that the City has a population of
approximately 38,796 residents.39 The La Quinta Library has approximately 20,000 square feet of
37 The Fee Justification Study provides 2019 to 2020 data on student capacity and enrollment.
38 Brawner, Lee B., Donald L., Jr." Determining Your Public Library's Future Size: A Needs Assessment and Planning
Model." Institute of Education Sciences. 1996. Accessed July 2025. https://eric.ed.gov/?id=ED392455&utm_.
39 Department of Finance. "Total State Population." Accessed July 2025. https://dof.ca.gov/wp-
content/uploads/sites/352/Forecasting/Demographics/Documents/E-1 _2025_Press_Release.pdf.
Meridian Consultants
3.0-52 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
library space. Accordingly, the City is below the ALA standard of 1.0 square feet per resident, as the
City has approximately 0.52 square feet per resident.
As discussed above, the 2025 Project would generate a population increase of 1,690 people. Using
the ALA standard of 1.0 square feet per resident and considering the 2025 Project's estimated
addition of approximately 1,690 people, the ratio of library square feet per resident would be
approximately 0.49 feet per resident. The 2025 Project would pay all applicable development fees
that fund the expansion of libraries. Therefore, impacts would be less than significant.
Public services impacts associated with the 2025 Project would be similar to those identified in the
Previous Assessments and would be less than significant through the payment of applicable fees
and with the incorporation of MM PUB-1 through MM PUB-2. No new significant impacts or increase
in the severity of any previously identified significant impacts would result from changes to the 2025
Project, new information, or changes to the circumstances under which the 2025 Project will be
undertaken.
Meridian Consultants
3.0- 5 3 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
g-
3.12 UTILITIES AND SERVICE SYSTEMS
3.12.1 Thresriuius
a. Exceed wastewater treatment requirements of the applicable Regional Water Quality Control
Board?
b. Require or result in the construction of new water or wastewater treatment facilities or
expansion of existing facilities, the construction of which could cause significant
environmental effects?
c. Require or result in the construction of new storm water drainage facilities or expansion of
existing facilities, the construction of which could cause significant environmental effects?
d. Have sufficient water supplies available to serve the project from existing entitlements and
resources, or are new or expanded entitlements needed?
e. Result in a determination by the wastewater treatment provider, which serves or may serve
the project that it has adequate capacity to serve the project's projected demand in addition
to the provider's existing commitments?
f. Be served by a landfill with sufficient permitted capacity to accommodate the project's solid
waste disposal needs?
Comply with federal, State, and local statutes and regulations related to solid waste?
3.12.z Summary of Findings in Previous Assessments
Energy
Electric services are provided to the City from Imperial Irrigation District (IID) and natural gas services
are provided to the City from Southern California Gas Company (SoCal Gas). As identified in the
City's General Plan, the IID and SoCal Gas would provide electrical and natural gas services to the
Project Site. Additionally, incorporation of MM UTIL-1 and MM UTIL-2 would improve energy
efficiency and further minimize the project's energy demand, resulting in less than significant
impacts.
Wastewater Services
CVWD provides wastewater treatment to the City. In the 2002 MND, there were septic tanks within
the Project Site. Development of the project could lead to a significant impact on septic tanks. MM
UTIL-7 was implemented to remove all septic tanks on the site in accordance with Federal, State and
local regulations.
In 2005, the City entered into a Domestic Water and Sanitation System Installation and Irrigation
Service Agreement (Water Agreement) with the CVWD for the Specific Plan Area. This Water
Agreement required that several local improvements be made to the water delivery system to provide
service to the Specific Plan Area. Sewer improvements proposed as part of the project included
construction of a 12 inch sewer main in SilverRock Wayfrom the existingAhmanson House to Avenue
54, a 27 inch sewer main to run west in SilverRock Way to Jefferson Street in the Jefferson Street
Access Road, and a 27 inch sewer main to connect to the 12 inch sewer main in SilverRock Way to
Meridian Consultants
3.0-54
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
an existing pump station MM UTIL-3 and MM UTIL-6 were implemented to connect the site to the
City's sewer system according to the Water Agreement and pay the developer fees associated with
the development of sewer infrastructure.
Sewage generated from the project would be conveyed for treatment to the Mid -Valley Water
Reclamation Plant. There were no plans for expansion at the Mid -Valley Water Reclamation Plant, as
its capacity was approximately 10 million gallons per day (mgd) and an average of approximately 5
mgd per day was being processed. Therefore, impacts to wastewater service were determined to be
less than significant with mitigation incorporated.
Storm Drain Infrastructure
CVWD is the regional authority responsible for the management of drainage within the Coachella
Valley, while the City is responsible for storm water management within the City boundaries. The City
has prepared a storm water management plan used to direct future management plans and policies.
The Previous Assessments determined that the existing and proposed golf courses within the
Specific Plan Area had sufficient capacity to accommodate drainage without any off -site drainage
impacts. With implementation of MM UTIL-3 and adherence to the Water Agreement impacts were
determined to be less than significant
Water Services
Domestic water is provided to the City by CVWD. The primary source of water is groundwater, which
is extracted from the Whitewater River Subbasin by means of a deep well system in the region and
imported water from the Colorado River vis the Coachella Canal.
The Water Agreement required improvements to be made as part of the Specific Plan including an 18
inch water main in SilverRock Way from the Ahmanson House to Avenue 54, an 18 inch water main
to run west from SilverRock Way to Jefferson Street in the Jefferson Street Access Road, two water
well sites, and a pressure reducing/boosting station. All utility infrastructure improvement designs
would comply with established CVWD standards and would be subject to CVWD review and
approval. With the implementation of MM UTIL-3 and MM UTIL-6, impacts would be less than
significant with regards to water service.
AWSA and Water SupplyVerification (WSV) was prepared and approved for the project by CVWD that
determined CVWD would be able to serve and meet the project water demand of approximately
2,361 acre-feet per year (afy), resulting in less than significant impacts.
Solid Waste
Previous Assessments identified that all solid waste within the Specific Plan Area would be taken to
the Edom Hill Transfer Station and transported to either the Lamb Canyon Landfill, Badlands Landfill,
or the El Sobrante Landfill. Previous Assessments stated the annual disposal rate at the Lamb
Meridian Consultants
3.0-55
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
Canyon facility is 0.46 million tons per year. The landfill is permitted to receive a maximum of 5, 000
tons per day and it is projected that current landfill capacity will extend to 2021, but the Lamb Canyon
landfill has potential for expansion. The Lamb Canyon Landfill, Badlands Landfill and El Sobrante
Landfill have capacity for the solid waste generated by the project analyzed in the Previous
Assessments.
Previous Assessments noted that solid waste generated by construction and demolition sites may
account for as much as 22 percent of the solid waste stream. Prior to the issuance of grading permits,
the Previous Assessments required recycling of at least 50 percent of these materials, as required by
MM UTIL-4. Previous Assessments also identified MM UTIL-5, which would reduce solid waste
impacts through professional landscaping services who compost green waste. The proposed
development analyzed in Previous Assessments would comply with federal, State, and local statutes
and regulations related to solid waste, resulting in less than significant impacts.
No new information or changed circumstances were identified in the Previous Assessments that
resulted in new or more severe impacts related to utilities and service systems. All impacts remained
less than significant with incorporation of MM UTIL-1 and MM UTIL-7.
Previously Identified Mitigation Measures
MM UTIL-1
The most efficient furnaces, water heaters, pool heaters and other equipment that
use natural gas shall be used in project construction. The use of kitchen appliances
that use natural gas and alternative, renewable energy sources, including solar and
wind turbine technologies, shall also be used to the greatest extent feasible.
MM UTIL-2 Title 24 of the California Administrative Code, which addresses energy conservation
in all proposed uses, shall be strictly enforced in project design and construction.
MM UTIL-3 All planned uses shall be connected to the city-wide sewer system.
MM UTIL-4 A recycling program shall be developed for all proposed uses. Recycling provisions
for commercial and business establishments should include separate recycling
bins. Items to be recycled at commercial establishments may include white paper,
computer legal paper, cardboard, and glass and aluminum cans.
MM UTIL-5 Professional landscaping services from companies which compost green waste
shall be utilized.
MM UTIL-6 The Project's fair share of public utilities, infrastructure and improvements required
to properly service the proposed uses shall be determined through consultation with
the City Department of Public Works in the Development Agreement and paid prior
to the issuance of grading permits.
Meridian Consultants
3.0-56
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
MM UTIL-7
Any existing or historic septic systems located on the site shall be abandoned in
accordance with federal, state, and local laws and regulations prior to the issuance
of building permits.
3.12.3 Existing Conditions
Energy
Electric services are provided to the City from IID and natural gas services are provided to the City of
SoCal Gas.
Wastewater Services
The CVWD is responsible for wastewater treatment in the City of La Quinta. The CVWD maintains a
network of sewer trunk lines throughout the City ranging in size from 4 to 24 inches in diameter. An
18- inch main line is located adjacent to the Project Site in the Jefferson Street right-of-way. The Mid -
Valley Reclamation Plant would treat wastewater generated from the Project Site.
Storm Drain Infrastructure
As discussed in Previous Assessments, existing and proposed golf courses within the Specific Plan
Area have sufficient capacity to accommodate drainage without any off -site drainage impacts.
The storm drain within Avenue 52 is designed to convey stormwater into the envelope of the proposed
second golf course along Avenue 52 and Jefferson Street (Planning Area 8) to allow for percolation
into the groundwater aquifer. The 2025 Project would incorporate similar amounts of open space as
identified in the Specific Plan to allow for percolation of water runoff into the aquifer.
Water Services
The Project Site is within the CVWD service area. CVWD's total water production reached 99,843
acre-feet per year (AFY) in 2020.4° CVWD's domestic water system has 64 pressure zones. This
consists of approximately 97 groundwater production wells, 2,000 miles of pipe, and 133 million
gallons of storage in 65 enclosed reservoirs.41 The primary water supply for CVWD is groundwater
from the Whitewater River Subbasin in the Coachella Valley and it supplements groundwater use
with imported water and use of reclaimed water.
40 Coachella Valley Water District. 2020 Coachella Valley Regional Urban Water Management Plan. Accessed July
2025. http://cvwd.org/DocumentCenter/View/5482/Coachella-Valley-RUWMP.
41 Coachella Valley Water District. 2020 Coachella Valley Regional Urban Water Management Plan. Accessed July
2025. http://cvwd.org/DocumentCenterNiew/5482/Coachella-Valley-RUWMP.
Meridian Consultants
3.0-57
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
Approximately 19 acres of the Coachella Canal,42 are located within the boundaries of the Project
Site. Up to 97 percent of the 2025 Project's water usage for irrigation purposes, which is by far the
majority of the total water demand for the 2025 Project, may be obtained from the Coachella Canal
in accordance with the terms of the existing Water Agreement between the City and CVWD.
Indirectly, canal water will be used for groundwater recharge and source substitution throughout the
Coachella Valley. Water to the Specific Plan Area is provided by CVWD through the existing 18-inch
water main beneath SilverRock Way.
Solid Waste
The City has a franchise agreement with Burrtec Waste and Recycling Services, LLC (Burrtec) for the
provision of solid waste disposal within the City and the City's Sphere of Influence. Non -hazardous
household, commercial and most non -hazardous industrial solid waste collected in the City is taken
to the Edom Hill Transfer Station in Cathedral City. From there, waste is transported to one of three
landfills: the Lamb Canyon regional landfill; El Sobrante Landfill; or the Badlands Landfill. The Project
Site would be served by Burrtec.
3.12.4 Analysis of Proposed Project
Energy
As detailed above, the City's General Plan identified that IID and SoCal Gas would provide electrical
service to the Project Site. Incorporation of MM UTIL-1 and MM UTIL-2 would improve energy
efficiency and further minimize the project's energy demand. Further, the 2025 Project would reduce
development intensity compared to the land uses analyzed in the Previous Assessments. Therefore,
impacts would be less than significant with mitigation incorporated.
Wastewater Services
As discussed above, the Project Site is connected to the City's sewage system. These sewer lines
would adequately serve the project as analyzed in the Previous Assessments. The 2025 Project would
reduce overall development intensity, which would reduce wastewater generation. Therefore,
sewage impacts would be less than significant.
Storm Drain Infrastructure
Storm drains to adequately serve the project analyzed in Previous Assessments have been
constructed. The existing Project Site, including the existing and proposed golf courses within the
Specific Plan Area have sufficient capacity to accommodate on -site drainage without off -site
drainage impacts. The 2025 Project would incorporate similar amounts of open space for the golf
42 Note: The Coachella Canal is a branch of the All -American Canal that brings Colorado River water into the Imperial
and Coachella Valleys. This information is from Coachella Valley Water District, Coachella Valley Water Management
Plan Update, Section 4 - Existing Water Supplies (January 2012), p. 4-14.
Meridian Consultants
3.0-58 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
course as identified in Previous Assessments, to allow for percolation of water runoff into the aquifer.
As a result, the 2025 Project would not require or result in the construction of new storm water
drainage facilities or expansion of existing facilities. The 2025 Project would reduce overall
development intensity compared to that analyzed in the Previous Assessments, which would reduce
demand on storm drain infrastructure. Therefore, impacts would be less than significant.
Water Services
As described above, domestic water is provided in the City by CVWD. A WSA and WSV were
developed for the project analyzed in the Previous Assessments, which confirmed that CVWD would
have the current and future water supply necessary to provide water for the Specific Plan and other
existing and planned future uses that would be served by the CVWD. The 2020 Coachella Valley
Regional Urban Water Management Plan confirms that CVWD has adequate water supplies to 2045
under normal, single and multiple dry years.43 As previously described, a majority of the 2025
Project's water usage is for irrigation purposes, which may be obtained from the Coachella Canal, in
accordance with the terms of the existing Water Agreement between the City and the CVWD. Further,
the 2025 Project would reduce overall development intensity compared to the project analyzed in the
Previous Assessments, which would reduce water demand. The water demand estimate for the
SilverRock Resort Project in the 2006 Water Supply Assessment (WSA) approved for the project was
approximately 2,361 acre-feet per year. The estimated water demand for the 2025 Project is
approximately 2,376 acre-feet per year.44 This potable water demand is less than one percent greater
than the demand estimate in the approved WSA. This incremental increase does not represent a
substantial increase in water demand for the project. The 2025 Project would not require water
service improvements, as previously proposed water infrastructure improvements as part of the
Specific Plan were already completed, including the 18-inch water main beneath SilverRock Way.
Impacts to water supplies and services would be less than significant.
Solid Waste
The City and Project Site are serviced by Burrtec. Solid waste generated in the Project Site would be
taken to the Edom Hill Transfer Station and then transported to either the Lamb Canyon Landfill,
Badlands Landfill, or the El Sobrante Landfill. The current annual disposal rate at the Lamb Canyon
43 Coachella Valley Water District. 2020 Coachella Valley Regional Urban Water Management Plan. 2021
44 677.1 acre-feet per year (residential) + 142.2 acre- feet per year (commercial) + 1,457.9 acre-feet per year (open
space) +98. 7 acre-feet per year (public park) = 2,376. 6 acre-feet per year. CVWD, WSA and WSV for the proposed
SilverRock Resort Specific Plan, (2006) Table 3. 1- 1.
Meridian Consultants
3.0-59
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
facility is approximately 50 million tons per year.45The landfill is permitted to receive a maximum of
5,000 tons per day and is projected that the current landfill capacity will extend to 2029.46
The Previous Assessments determined that with the implementation of MM UTIL-4 and MM UTIL-5,
which sets forth a recycling program for all proposed uses, and utilizes professional landscaping
services to compost green waste, impacts would be less than significant. The 2025 Project would
continue to implement those mitigation measures. Additionally, the 2025 Project would reduce
development intensity compared to the project analyzed in the Previous Assessments, resulting in
less solid waste generation. Therefore, the 2025 Project would be adequately served by solid waste
services.
The 2025 Project would comply with federal, State and local statues and regulations related to solid
waste, such as AB 341, SB 1016, Per Capita Disposal Rate and AB 939. Impacts to solid waste would
be less than significant with mitigation incorporated.
Utilities and service systems impacts associated with the 2025 Project would be similar to those
identified in the Previous Assessments and would be less than significant through the incorporation
of MM UTIL-1, MM UTIL-2, MM UTIL-4, and MM UTIL-5. No new significant impacts or increase in the
severity of any previously identified significant impacts would result from changes to the 2025
Project, new information, or changes to the circumstances under which the 2025 Project will be
undertaken.
45 CalRecycle. "2023 Riverside Unincorporated Electronic Annual Report Summary." Accessed July 2025.
https://rcwaste.org/sites/g/files/aldnop376/files/2024-08/2023%20EAR%20-%20Jurisd iction%20Summary.pdf.
46 CalRecycle. "2023 Riverside Unincorporated Electronic Annual Report Summary." Accessed July 2025.
https://rcwaste.org/sites/g/files/aldnop376/files/2024-08/2023%20EAR%20-%20Jurisd iction%20Su m ma ry.pdf.
Meridian Consultants
3.0-60 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
3.13 AESTHETICS
3.1 3.1
i nresnuiu5
a. Have a substantial adverse effect on a scenic vista?
b. Substantially damage scenic resources, including, but not limited to, trees, rock outcroppings,
and historic buildings within a state scenic highway?
c. Substantially degrade the existing visual character or quality of the site and its
surroundings?
d. Create a new source of substantial Tight or glare, which would adversely affect day or
nighttime views in the area?
3.1 3.2 Summary of Findings in Previous Assessments
The Specific Plan contains design standards related to building heights, setbacks, scale and
architectural treatments that require developments adjacent to the Santa Rosa and San Jacinto
Mountains to maintain views from adjacent locations off -site. The Specific Plan has a range of
maximum building heights that range from 28 to 60 feet tall and maximum stories ranging from two
to five stories tall. Previous Assessments identified that the development of the Project Site would
include 2- to 3-story buildings that would allow views of the Santa Rosa and San Jacinto Mountains
from the adjacent buildings and the public rights -of -way. The planned development analyzed in
Previous Assessments would go through the site plan review process to ensure enforcement of the
City's development standards. Previous Assessments found that the planned development would
not obstruct views of the mountains and would result in less than significant impacts.
The 2035 General Plan identified Jefferson Street and Avenue 52 as image corridors. As roadways
with these classifications are required to be improved and maintained with appropriate setbacks,
landscaping materials and signage according to the Specific Plan, the planned development
analyzed in Previous Assessments would provide landscaping and parkway treatments consistent
with surrounding uses. This would be reviewed and enforced during site plan review. Previous
Assessments identified that potential aesthetic impacts along Jefferson Street and Avenue 52 would
be mitigated to less than significant levels through the implementation of MM AES-4, MM AES-6, and
MM AES-7. MM AES-4 would limit signage sizing based on location, size and maintenance; MM AES-
6 would ensure proposed development along scenic highways, roadways and corridors is reviewed
for compatibility with the natural and built environments; and MM AES-7 would regulate all grading
and development within scenic viewsheds to assure maximum viewshed protection and pedestrian
and vehicular activity.
There are no officially designated state scenic highways within the City, and the planned
development in Previous Assessments would not substantially damage scenic resources within a
state scenic highway. The Project Site does not contain scenic resources, including trees, rock
outcroppings, or historic buildings. The Ahmanson House, built after 1950, is located within the
Project Site. However, in Previous Assessments the Ahmanson House was not identified as a historic
Meridian Consultants
3.0-61
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
landmark. Previous Assessments found that the development of the Project Site would not
substantially damage scenic resources within a state scenic highway and impacts to scenic
resources along a state scenic highway would be less than significant.
Previous Assessments identified that development of the Project Site would develop vacant portions
of the Project Site and would improve the visual character of the undeveloped land with resort uses.
The development analyzed in Previous Assessments would be compatible with the Project Site's
surrounding uses and the visual character of the City, including golf communities. Previous
Assessments incorporated MM AES-1, MM AES-2, and AES-5 to further minimize visual character
impacts, resulting in less than significant impacts. MM AES-1 regulates landscape designs and
materials, would ensure that project design would complement the native desert environment; MM
AES-2 ensures that overhead utility lines would be undergrounded, subject to the review of the City
Engineer and Public Works Department; and MM AES-5, requires safe circulation, screened areas,
protected and enhanced outdoor seating areas, appropriate lighting levels, limited signage and
landscaping designs.
Previous Assessments found that development of the Project Site would comply with the City's Dark
Sky Ordinance with implementation of MM AES-3. MM AES-3 states that any proposed lighting on a
building or parking lot shall be shielded so that light is projected downward and not onto adjacent
properties or the public right-of-way.
No new information or changed circumstances were identified in the Previous Assessments that
resulted in new or more severe impacts related to aesthetics. All impacts remained less than
significant with the incorporation of MM AES-1 through MM AES-7.
Previously Identified Mitigation Measures
MM AES-1 Landscape designs and materials that complement the native desert environment
shall be utilized in project design and construction.
MM AES-2
MM AES-3
Overhead utility lines shall be undergrounded to the greatest extent possible through
the establishment of an undergrounding program and guidelines subject to the
review of the City Engineer and Public Works Department
Outdoor lighting shall be limited to the minimum height, number of fixtures, and
intensity needed to provide sufficient security and identification in each
development, making every reasonable effort to protect the community's night skies,
consistent with the City Dark Sky Ordinance.
MM AES-4 Signage shall be limited to the locations, sizes, and maintenance requirements
necessary to provide functional identification.
MM AES-5 Safe, convenient vehicular and pedestrian circulation, screened outdoor
storage/loading and other unsightly areas, protected and enhanced outdoor seating
Meridian Consultants
3.0-62
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
MM AES-6
MM AES-7
areas, appropriate lighting levels, limited signage, and landscaping designs that
preserve and enhance visual resources shall be included in the design of any
commercial area on the Project Site.
Development proposed along designated scenic highways, roadways and corridors
shall be reviewed for compatibility with the natural and built environments to assure
maximum viewshed protection and pedestrian and vehicular activity.
All grading and development proposed within scenic viewsheds shall be regulated to
minimize adverse impacts to these viewsheds. All grading, development, and
landscaping plans shall be submitted to the City for review and approval prior to the
issuance of grading permits.
3.13.3 txisung Conditions
According to the City's General Plan EIR, the existing visual character of the City is characterized as
suburban, with residential neighborhoods, commercial shopping centers, office parks, golf courses,
parks, and community facilities.47 Development within the City is generally lower density and
buildings are typically low-rise structures. Surrounding uses near the Project Site include golf
courses, residential communities and open space areas.
The Project Site has been mass graded and contains the Arnold Palmer Golf Course, Ahmanson
House, and partially developed hotel and residential buildings from previous approvals. Scenic vistas
surrounding the Project Site include views of natural features, such as the Santa Rosa Mountains.
The Project Site is adjacent to the Santa Rosa and San Jacinto Mountains, which are identified as
visual resources in the City's 2035 General Plan.
There are no state scenic highways within the City.48 The Project Site is adjacent to two (2) image
corridors, Jefferson Street and Avenue 52.
Existing sources of light and glare near the Project Site are located along major arterials, such as
Jefferson Street, produce light and glare from signalized intersections, street lamps, and vehicle
headlights. Additionally, light from surrounding developments contribute to the ambient lighting of
the Project area. Lighting within the Project Site includes lighting from the golf course and clubhouse
for the purpose of nighttime visibility, safety, security and operation.
3.1 3.4 Analysis of Proposed Project
As discussed above, the Project Site is completely graded and partially developed. There are no
existing scenic resources on the Project Site. Scenic vistas and resources near the Project Site
47 City of La Quinta, Environmental Impact Report for the City of La Quinta General Plan (2013).
48 Caltrans. "California State Scenic Highways." Accessed July 2025.
https://caltrans.maps.arcgis.com/apps/webappviewer/index.html?id=465dfd3d807c46cc8e8057116f1 aacaa.
Meridian Consultants
3.0-63 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
include the Santa Rosa and San Jacinto Mountains. The Project Site would adhere to design
standards set forth in the Specific Plan, which require developments adjacent to the mountains to
maintain views from adjacent locations off -site. These design standards regulate building height,
setbacks, scale, and architectural treatments. The 2025 Project would allow the development of
buildings with a maximum height of 60 feet, which would adhere to the Specific Plan design
regulations and allowviews of the Santa Rosa and San Jacinto Mountains from the adjacent buildings
and the public rights -of -way. Review of the site plan for the 2025 Project would ensure compliance
with the City's development standards. Accordingly, the 2025 Project would not obstruct views of
nearby scenic resources and vistas.
Jefferson Street and Avenue 52 are adjacent to the Project Site, which are both identified as image
corridors in the 2035 General Plan. Development of the 2025 Project would adhere to roadway
improvement requirements, which include appropriate setbacks, landscaping materials, and
signage. The 2025 Project would provide landscaping and parkways consistent with surrounding
uses. Site plan review of the 2025 Project would further ensure improvements are consistent with
surrounding uses.
There are no officially designated state scenic highways within the City. Therefore, the 2025 Project
would not substantially damage scenic resources within a state scenic highway.
In 2017, the City recorded a property covenant49 that recognizes the Ahmanson Ranch House as a
historic resource and limits alterations to the building. This covenant requires the Ahmanson Ranch
House property to be preserved as an historic resource, unless modifications are approved by the
City Council under its regulatory and design review authority, in accordance with all applicable laws.
Under the proposed Reinstated and Amended Development Agreement, the Ahmanson Ranch
House Property remains subject to these same protections. Any future proposal to modify the
Ahmanson Ranch House would be subject to City Council review and all applicable requirements of
CEQA.
The City's 2023 Historic Resource Survey identifies the Ahmanson House as ahistoric resource.5°
The existing Ahmanson House property is intended to be repurposed for use as a restaurant or other
hotel amenity, consistent with the existing covenant. No significant aesthetic impacts would occur.
The 2025 Project would develop resort uses and a second golf course that would improve the visual
character of the largely undeveloped Project Site. Surrounding uses near the Project Site include golf
courses, residential communities and open space areas. The 2025 Project would be compatible with
the site's surrounding uses and visual character of the City. As identified in Previous Assessments,
49 City of La Quinta. "Amendment No. 3 To Purchase, Sale, and Development Agreement." Accessed September 2025.
https://laglaserweb.laquintaca.gov/WebLink/DocView.aspx?dbid=1 &id=505711 &repo=CityofLaQuinta.
50 City of La Quinta. "Historic Resource Survey and Context Statement." Accessed August 2025.
https://www.laquintaca.gov/home/showpu blisheddocu ment/48755/638373717730870000.
Meridian Consultants
3.0-64
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
the 2025 Project would adhere to MM AES-1, MM AES-2, MM AES-4, MM AES-5, MM AES-6, and MM
AES-7, which would further ensure the 2025 Project is visually compatible with the surrounding land
uses and the City's visual character.
Due to the primarily urbanized nature of the area, a moderate level of ambient nighttime light already
exists. Nighttime lighting sources include streetlights, vehicle headlights, and building illumination.
The 2025 Project would add new lighting sources within the Project Site. However, the 2025 Project
would comply with the City's Dark Sky Ordinance and MM AES-3, which states that any proposed
lighting on a building or parking lot shall be shielded so that light is projected downward and not onto
adjacent properties or the public right-of-way, resulting in less than significant light and glare
impacts.
Aesthetics impacts associated with the 2025 Project would be similar to those identified in the
Previous Assessments and would be less than significant through the incorporation of MM AES-1
through MM AES-7. No new significant impacts or increase in the severity of any previously identified
significant impacts would result from changes to the 2025 Project, new information, or changes to
the circumstances under which the 2025 Project will be undertaken.
Meridian Consultants
3.0-65 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
3.14 CULTURAL RESOURCES
3.14.1 I riresuuids
a. Cause a substantial adverse change in the significance of a historical resource
b. Is defined in CEQA Guidelines Section 15064.5?
c. Cause a substantial adverse change in the significance of an archaeological resource
pursuant to CEQA Guidelines, Section 15064.5?
d. Directly or indirectly destroy a unique paleontological resource or site or unique geologic
feature?
e. Disturb any human remains, including those interred outside of formal cemeteries?
3.14.z Summary of findings in Previous Assessments
The Project Site was originally undeveloped except for the abandoned single-family resident house
and the Ahmanson House, the house belonging to the philanthropic Ahmanson family. A cultural
study was conducted for the previous project and determined that none of the structures on the site
had historic landmark status, nor were there any known cultural resources on the site. Since the
initial2002 MND, the Specific Plan Area has been mass graded and developed with the Arnold Palmer
Golf Course; no paleontological resources, archeological resources or human remains were found
during this time. However, as part of the 2035 General Plan Update, a Paleontological Resources
Technical Report was completed, which found that the Project Site is in an area designated as having
a high palaeontologic sensitivity. Additionally, the potential for encountering archeological and
paleontological resources during development of the site was identified. Previous Assessments
identified MM CUL-1, which requires the retainment of a qualified archaeological and
paleontological monitor in order to reduce potential impacts to archaeological and paleontological
resources to a less than significant level.
Previous Assessments stated that if human remains were discovered during ground -disturbing
activities, all such activities within a 100-foot radius of the find would be halted immediately and the
designated representatives would be notified. All development activities would be conducted in
accordance with applicable regulations related to the discovery of human remains in California
Health and Safety Code Sections 7050. 5 and 7052 and California Public Resources Code Section
5097.
No new information or changed circumstances were identified in the Previous Assessments that
resulted in new or more severe impacts related to cultural resources. All impacts remained less than
significant with mitigation incorporated.
Previously Identified Mitigation Measures
MM CUL-1
During any ground altering activities associated with project grading or construction,
including demolition of existing modern structures and facilities, the project area
shall be monitored by a qualified archaeological monitor and a qualified
Meridian Consultants
3.0-66
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
paleontological monitor shall be required in the event of discovery of resources. The
monitor shall have the authority to halt any activities impacting potentially significant
cultural resources until the resources can be evaluated for significant and cleared or
mitigated. The monitoring program shall also include consultation with the local
Native American representatives (e.g., Torres -Martinez and/or Morongo
Reservations) consistent with applicable statutes governing cultural resources.
3.14.' Existing Conditions
In 2023, the City completed a Historic Resource Survey and Context Statement to evaluate the
significance and integrity of historic -era properties within the City under the criteria of the National
Register of Historic Places (NRHP), the California Register of Historical Resources (CRHR), and the
La Quinta Historic Resources Inventory (Local Register). The survey identified 489 historic -era
properties within the City boundaries. 363 sites were documented and evaluated, with 103 of these
properties identified as significant and eligible for designation and listing on the Local Register,
CRHR, or NRHP, either individually or as contributors to a local historic district. 259 properties were
identified as not significant and ineligible for listing on the Local Register, CRHR or NRHP.51
The City's 2023 Historic Resource Survey identifies the Ahmanson House as eligible for local listing
and the National and California Registers.52 The nearest historic resource is approximately 1.5 miles
west of the Project Site but is separated from the Project Site by the base of the Santa Rosa
Mountains. The Arnold Palmer Classic Golf Course is located on the most western portion of the site
alongside the edge of the Santa Rosa Mountains; however, this area has already been disturbed by
previous development. The Project Site was previously mass graded, and portions of the Project Site
have been disturbed and developed.
3.14.4 Analysis of Proposed Project
In 2017, the City recorded a property covenant53 that recognizes the Ahmanson Ranch House as a
historic resource and limits alterations to this building. This covenant requires the Ahmanson Ranch
House property to be preserved as a historic resource, unless modifications are approved by the City
Council under its regulatory and design review authority, in accordance with all applicable laws.
Under the proposed Reinstated and Amended Development Agreement, the Ahmanson Ranch
House Property remains subject to these same protections. Any future proposal to modify the
Ahmanson Ranch House would be subject to City Council review and all applicable requirements of
CEQA. As described above, the City's 2023 Historic Resource Survey also identifies the Ahmanson
51 City of La Quinta. "Historic Resource Survey and Context Statement." 2023. Accessed August 2025.
https://www.laquintaca.gov/home/showpu blisheddocu ment/48755/638373717730870000.
52 City of La Quinta. "Historic Resource Survey and Context Statement." Accessed August 2025.
https://www.laquintaca.gov/home/showpu blisheddocu ment/48755/638373717730870000.
53 Covenant Affecting Real Property (Ahmanson Ranch House), recorded on May 11, 2017 (Instrument No. 2017-
0189769).
Meridian Consultants
3.0-67 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
House as eligible for local listing or designation and as eligible for the NR and CR individually through
survey evaluation.54 No impacts to historic resources were identified for the project. The Project Site
was previously mass graded. However, there is potential for the unanticipated discoveries of
archeological, paleontological resources and human remains with further development of the site.
The 2025 Project would implement MM CUL-1, which would ensure impacts to archaeological and
paleontological resources would remain less than significant. Therefore, impacts would be less than
significant with mitigation incorporated.
Although there is little potential for the accidental discovery of human remains at this point in time
as the site has been fully graded and partially developed, if human remains were to be discovered
during construction, the requirements of the California Health and Safety Code Section 7050.5
would apply, and disposition of the human remains and any associated grave goods would occur in
accordance with PRC Section 5097.91 and 5097.98 would be implemented.
Cultural resource impacts associated with the 2025 Project would be similar to those identified in
the Previous Assessments and would be less than significant with mitigation incorporated. No new
significant impacts or increase in the severity of any previously identified significant impacts would
result from changes to the 2025 Project, new information, or changes to the circumstances under
which the 2025 Project will be undertaken.
54 City of La Quinta. "Historic Resource Survey and Context Statement." Accessed August 2025.
https://www.laquintaca.gov/home/showpu blisheddocu ment/48755/638373717730870000.
Meridian Consultants
3.0-68
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
3.15 RECREATION
3.1 5.1 i niesriolds
a. Would the project increase the use of existing neighborhood and regional parks or other
recreational facilities such that substantial physical deterioration of the facility would occur
or be accelerated?
b. Does the project include recreational facilities or require the construction or expansion of
recreational facilities, which might have an adverse physical effect on the environment?
3.1 5.2 Summary of Findings in Previous Assessments
Previous Assessments identified that the Project Site would include two (2) public golf courses along
with additional public park space, which would be considered recreational resources within the City.
Development of the Project Site could generate a small number of residents within the Specific Plan
Area, as is typical for homes in resort communities in the Coachella Valley. Previous Assessments
identified the Quimby Act fees, or an in -lieu parkland fee, would be paid to the City to offset potential
resident use of parkland located outside of the Specific Plan Area. Development of the Project Site
would provide additional public recreational services without significantly increasing the City's
population. Previous Assessments found that development of the Project Site would not result in
increased demand on neighborhood or regional park facilities, nor would it affect existing
recreational opportunities.
No new information or changed circumstances were identified in the Previous Assessments that
resulted in new or more severe impacts related to recreation. All impacts remained less than
significant.
3. 1 5.3 Existing Conditions
The City owns and operates several park facilities including both active and passive recreational
opportunities for residents and visitors. There are four (4) community parks in the City, including the
16.75-acre La Quinta Sports Complex, the 18-acre La Quinta Park (part of Old Town La Quinta), the
17.5-acre Civic Center Campus, and the 14-acre SilverRock Park located in the northwest portion of
the SilverRock Specific Plan area. The City's four (4) neighborhood parks include Fritz Burns Park,
Adams Park, Monticello Park, and Pioneer Park. The City has five (5) mini parks, including Eisenhower
Park, Seasons Park, Saguaro Park, Desert Pride and Velasco Park. The City's Cove Oasis is a 114-acre
natural open space area with trails, and the Fred Wolff Nature Preserve is a 20-acre natural open
space area. Additionally, the City recently developed a skate park.
There are approximately 5,259 acres of open space areas set aside for recreational facilities within
the City. These developed open -space recreational areas include a variety of City owned and
maintained parks and facilities, County of Riverside -owned parks, Desert Recreation District
facilities, and public and private golf courses. In addition, there are approximately 6,933 acres of
Meridian Consultants
3.0-69
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
natural open space areas within the City, which include hiking trails, equestrian trails, and other
passive recreation opportunities.
3.1 5.4 Analysis of Proposed Project
As further described in Section 3.2: Population and Housing, the 2025 Project would generate a
population of 1,690 people from the proposed 599 hotel/residential units. The Quimby Act,
established by state law, requires that every county and city meet the standard of 3 acres of parkland
per 1,000 residents.55 The 2025 Project would require 5.07 acres of recreational space in order to
adhere to the QuimbyAct.56 The City's 2035 General Plan's Policy PR 1.2 aims to provide a minimum
standard of 5 acres of parkland for every 1,000 residents, which would require 8.45 acres for the 2025
Project.57,58
The recreational amenities in the 2025 Project would include the approximately 173-acre Arnold
Palmer Golf Course, the additional 18-hole golf course, a 20,000-SF clubhouse, and other amenities
like tennis, pickleball, padel among others, which will well exceed the recreational acres required to
adhere to the Quimby Act and Policy PR 1.2. Therefore, the 2025 Project would not be required to pay
any Quimby Act fees. The 2025 Project would not result in increased demand on neighborhood or
regional park facilities, nor would it affect existing recreational opportunities. Impacts on recreation
would be less than significant.
Recreation impacts associated with the 2025 Project would be similar to those identified in the
Previous Assessments and would be less than significant. No new significant impacts or increase in
the severity of any previously identified significant impacts would result from changes to the 2025
Project, new information, or changes to the circumstances under which the 2025 Project will be
undertaken.
55 California Government Code. Section 66477. "Quimby Act."
56 (3 acres / 1000 residents) x (1,690 residents) = 5.07 acres of recreational area to adhere to the Quimby act.
57 City of La Quinta. 2035 La Quinta General Plan. (p. 11-191). Accessed July 2025.
https://www.laquintaca.gov/home/showpu blisheddocu ment/33559/636340813730530000.
58 (1,690 residents / 1000 residents) x 5 (acres) = 8.45 required acres.
Meridian Consultants
3.0-70 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
3.16 GREENHOUSE GASES
3.16.1 r nresnuru .
a. Generate greenhouse gas emissions, either directly or indirectly, that may have a significant
impact on the environment?
b. Conflict with an applicable plan, policy or regulation adopted for the purpose of reducing the
emissions of greenhouse gases?
3.16.2 Summary of Findings in Previous Assessments
At the time of the preparation of the 2002 MND and 2006 Addendum, the topic of Greenhouse Gases
(GHGs) and the associated checklist questions were not included in the CEQA Guidelines Appendix
G Checklist and, therefore, analysis was not required. Greenhouse gas emissions thresholds were
added in 2010, and as such, the 2014 Addendum addressed GHG emissions resulting from the 2006
Addendum and the 2014 Addendum.
The 2014 Addendum concluded that development of the Project Site with proposed land uses would
not result in the generation of greenhouse gas emissions that would have a significant impact on the
environment. Construction activities analyzed in the Previous Assessment were estimated to
generate 8,595 metric tons of carbon dioxide equivalents (MTCO2e) GHG emissions. Operational
emissions were estimated with the incorporation of the standard project design features (PDFs)
identified in the City's 2035 General Plan. Design features included GHG PDF-1 through GHG PDF-3
focused on efficient landscaping, GHG PDF-4 requiring efficient building design, GHG PDF-5
implementing renewable energy, GHG PDF-6 referring to recycling and composting, and GHG PDF-
7 through GHG PDF-9 to reduce reliance on traditional automobiles for transportation.
The development of the Project Site was found to be consistent with the targets set forth in the City's
Greenhouse Gas Reduction Plan (GGRP) by achieving 10 percent below 2005 emissions levels by
2020 and 28 percent below 2005 levels by 2035. For this reason, the 2014 Addendum also concluded
that development of the Project Site would be consistent with the goals of AB 32 and the GGRP set
forth by the City and would not conflict with an applicable plan, policy or regulation adopted for the
purpose of reducing the emissions of greenhouse gases.
No new information or changed circumstances were identified in the Previous Assessments that
resulted in new or more severe impacts related to greenhouse gas emissions. All impacts remained
less than significant.
Previously Identified Project Design Features
The following design features were identified by the 2014 Addendum:
GHG PDF-1
Landscaping designs shall consider the use of trees and other vegetation to maximize
the shading of buildings in order to reduce energy requirements for heating and
cooling and provide carbon storage.
Meridian Consultants
3.0-71
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
GHG PDF-2
GHG PDF-3
GHG PDF-4
GHG PDF-5
GHG PDF-6
GHG PDF-7
GHG PDF-8
GHG PDF-9
3.16.3
Desert landscaping techniques shall be utilized, including the use of automated
water efficient irrigation systems and devices.
Smart scalping practices shall be encouraged to minimize fugitive dust emissions
and reduce water demands.
Building designs shall strive to exceed Title 24 requirements or achieve LEED or
Energy Star standard equivalence ratings or better; buildings shall be equipped with
energy efficient and water conserving appliances and fixtures; building design shall
include natural lighting and ventilation; and light colored "cool" roofs and cool
pavement shall be utilized.
New buildings and substantial remodels including new roofs, should be designed to
accommodate rooftop photovoltaic or above parking solar.
Recycling and composting facilities and programs shall be readily available for all
new and existing land uses and every effort shall be made to divert the landfill waste
stream.
Promote the use of electric vehicles and alternative modes of transport by providing
safe and convenient bicycle, scooter and other non -motorized transport travel lanes,
and parking, as well as preferential plug-in stations for electric vehicle parking.
Assure all new development has safe and convenient access to public transit routes
that include seated, shaded bus stop areas.
Incorporate recreational open space adjacent to or as part of residential land uses.
Existing Condition
The California State Legislature enacted Assembly Bill (AB) 32, the California Global Warming
Solutions Act of 2006. AB 32 focuses on reducing greenhouse gas (GHG) emissions in California.
GHGs, as defined under AB 32, include carbon dioxide (CO2), methane, NOx, hydrofluorocarbons,
perfluorocarbons, and sulfur hexafluoride. AB 32 requires that GHGs emitted in California be
reduced to 1990 levels by the year 2020. The California Air Resources Board (CARB) approved a
Climate Change Scoping Plan (Scoping Plan) on December 11, 2008, as required by AB 32. The
Scoping Plan proposed a "comprehensive set of actions designed to reduce overall carbon GHG
emissions in California, improve our environment, reduce our dependence on oil, diversify our energy
sources, save energy, create new jobs, and enhance public health."59 The Scoping Plan had a range
of GHG reduction actions, including direct regulations; alternative compliance mechanisms;
monetary and nonmonetary incentives; voluntary actions; market -based mechanisms, such as a
cap -and -trade system; and an AB 32 implementation regulation to fund the program.
59 California Air Resources Board (CARB). Climate Change Scoping Plan: A Framework for Change.
https://www.arb.ca.gov/cc/scopingplan/document/adopted_scoping_plan.pdf. Accessed July 2025.
Meridian Consultants
3.0-72 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
The most recent version of the Scoping Plan60 was approved on December 15, 2022, and is the most
comprehensive and far-reaching Scoping Plan developed to date. It identifies a technologically
feasible, cost-effective, and equity -focused path to achieve new targets for carbon neutrality by2045
and to reduce anthropogenic GHG emissions to at least 85 percent below 1990 levels, while also
assessingthe progress California is making toward reducing its GHG emissions by at least 40 percent
below 1990 levels by 2030, as called for in SB 32 and laid out in the 2017 Scoping Plan.61 The 2030
target is an interim but important stepping stone along the critical path to the broader goal of deep
decarbonization by 2045.
The City adopted a GGRP in order to meet the requirements of AB 32. The GGRP establishes current
emissions and sets targets for long-term reductions. The GGRP includes a comprehensive inventory
of greenhouse gas emissions generated City-wide, including those generated by local government
activities. Future emissions of greenhouse gases are projected, reduction targets set, and policies
and programs are proposed as part of the GGRP in order for the City to meet mandated reductions.
To be consistent with AB 32, the reduction target is to achieve 1990 level emissions by 2020, and 80
percent below 1990 levels by 2050.62 Pursuant to AB 32, ARB established statewide 1990
greenhouse gas emissions as 427 million metric tons of carbon dioxide equivalents (MMTCO2e).63
Community -wide activities in the City generated an estimated 1,228,050 metric tons of carbon
dioxide equivalents (MTCO2e) in 2005.
3.1 b.4 Analysis or Proposed Project
Construction and operational emissions were modeled in CatEEMod (Version 2022.1) for the land
uses described in the 2014 Addendum and the land uses described in the 2025 Project to provide an
accurate comparison of emissions.
Construction
Construction activity impacts are relatively short in duration, so they contribute a relatively small
portion of the total lifetime GHG emissions of a project. The combustion of fossil fuels in
construction equipment results in GHG emissions of CO2 and smaller amounts of CH4 and N2O.
Emissions of GHG would also result from the combustion of fossil fuels from vendor trucks delivering
materials and construction worker vehicles commuting to and from the Project Site. Typically, light-
60 CARB. "2022 Scoping Plan Documents." https://ww2.arb.ca.gov/our-work/programs/ab-32-climate-change-
scoping-plan/2022-scoping-plan-
docu ments#:':text=The%202022%20Scoping%20Plan%20for,directed%20by%20Assem bly%20Bi ll%201279.
Accessed July 2024.
61 CARB. California's 2017 Climate Change Scoping Plan. 2017. ww2.arb.ca.gov/sites/default/files/classic/cc/
scopi ngpla n/scopi ng_plan 2017.pdf.
62 City of La Quinta. 2035 La Quinta General Plan.
63 California Environmental Protection Agency, Air Resources Board. "California 1990 Greenhouse Gas Emissions
Level and 2020 Limit (2014)." http://www.arb.ca.gov/cc/inventory/19901evel/19901evel.htm. Accessed July 2025.
Meridian Consultants
3.0-73 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
duty and medium -duty automobiles and trucks would be used for worker trips and heavy-duty trucks
would be used for vendor trips. The vast majority of motor vehicles used for worker trips would rely
on gasoline as an energy source, while motor vehicles used for vendor trips would primarily rely on
diesel as an energy source.
As presented in Table 3.16-1: Construction Greenhouse Gas Emissions, construction activities
associated with the 2025 Project would generate 15,397 MTCO2e GHG emissions. The SCAQMD
recommends annualizing construction -related GHG emissions over a project's lifetime, defined as a
30-year period, in order to include these emissions as part of the annual total operational emissions.
Therefore, construction -related GHG emissions have been annualized over this period and included
in the annual operational emissions.
As described above, construction activities associated with the 2014 Addendum were modeled in
Ca1EEMod (Version 2022.1) for the land uses described in the 2014 Addendum in order to provide
accurate comparison of emissions to the 2025 Project due to updates in the modeling software.
Construction activities associated with the 2025 Project would generate a reduced amount of GHG
emissions compared to those estimated in the 2014 Addendum as shown in Table 3.16-1. GHG
would be reduced due to the reduction is land use intensity compared to the Previous Assessments.
TABLE 3.16-1: CONSTRUCTION GREENHOUSE GAS EMISSIONS
Source
CO2e Emissions
(Metric Tons per Year)
2025 Project
2014 Addendum Project
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
195
1,375
1,821
1,169
1,164
760
592
163
0
810
802
762
760
757
757
669
814
816
2,817
3,671
3,602
3,544
2,679
Meridian Consultants
3.0-74 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
TABLE 3.16-1: CONSTRUCTION GREENHOUSE GAS EMISSIONS
Source
CO2e Emissions
(Metric Tons per Year)
2025 Project 2014 Addendum Project
2041
2042
2043
2044
2045
752
750
748
748
512
Total Construction GHG Emissions* 15,397
Annualized over Project Lifetime
18,612
513 620
Source: CaLEEMod Emissions calculations are provided in Appendix A: Air Quality and Greenhouse Gas Emissions Outputs.
Note: Totals in table may not appear to add exactly due to rounding in the computer model calculations.
2014 Addendum assumed eight (8) year construction schedule.
Abbreviations: MTCO2e = metric tons of carbon dioxide emissions.
Operation
Emissions from mobile and area sources and indirect emissions from energy and water use,
wastewater, as well as waste management would occur every year after full development of the
Project. A summary of the annual operational emissions of both the 2025 Project and the 2014
Addendum Project are provided in Table 3.16-2: Operational GHG Emissions. As described above,
operational activities associated with the 2014 Addendum were modeled in Ca1EEMod (Version
2022.1) for the land uses described in the 2014 Addendum in order to provide an appropriate
comparison of emissions to the 2025 Project due to updates in the modeling software. The operation
estimates represent emissions with incorporation of the standard design features identified in the
City's 2035 General Plan during operations.
To provide guidance to local lead agencies on determining significance for GHG emissions in their
CEQA documents, SCAQMD staff has proposed a tiered series of thresholds to be applied based on
the amount of GHG emissions generated by a proposed project and the type of project. The first tier
does not apply to the 2025 Project because the Project is not categorically exempt from CEQA. The
second tier threshold of significance is applied if the project is subject to an adopted GHG reduction
plan. The City has adopted a GGRP which applies to the 2025 Project. The analysis presented below
compares the proposed Project's GHG emission reductions from the 2014 Addendum Project. The
2025 Project's GHG emission reduction will then be compared to the City's GGRP reduction targets.
Meridian Consultants
3.0-75
SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
TABLE 3.16-2: OPERATIONAL GHG EMISSIONS
GHG Emissions
Source
2025 Project
Emissions
(MTCO2e/year)
2014 Addendum Project
Construction (amortized)
Operational (mobile)
sources*
Area sources
Energy
Waste
Water
Refrigerants
Annual Total
513
12,272
11
3,642
186
105
61
16,789
620
17,101
39
4,390
266
118
130
22,664
Source: CatEEMod Emissions calculations are provided in Appendix A: Air Quality and Greenhouse Gas Emissions Outputs.
Notes: Totals in table may not appear to add exactly due to rounding in the computer model calculations.
Abbreviations: MTCO2e = metric tons of carbon dioxide emissions.
*N20 emissions account for 0.18 and 0.30 MTCO2e/year, respectively.
Community -wide activities in the City generated an estimated 1,228,050 MTCO2e in 2005. As such,
the targets set forth in the GGRP are to achieve 10 percent below 2005 emission levels by 2020 and
28 percent below 2005 levels by 2035.64 To reach these targets, the GGRP includes a wide range of
implementation tools which can be implemented by City officials, residents, and business owners.
As shown in Table 3.16-2, the operational GHG emissions for the 2025 Project would be 16,789
MTCO2e per year. When modeled in Ca1EEMod (Version 2022.1) for the land uses evaluated in the
2014 Addendum, the operational GHG emissions for the 2014 Addendum Project would result in
22,644 MTCO2e per year. The 2025 Project would reduce GHG emissions by 5,875 MTCO2e per year,
approximately 26 percent, from the 2014 Addendum Project. Therefore, GHG emissions generated
by the 2025 Project would be consistent with the targets set forth in the GGRP by achieving 10 percent
below 2005 emissions levels by 2020 and 28 percent below 2005 levels by 2035. Impacts would be
less than significant.
Conflict with an Applicable Plan, Policy, or Regulation
The GGRP sets targets and identifies reduction measures to ensure that the City is consistent with
AB 32 goals of reducing GHG emissions by 2020 and 2035. As previously identified, the GGRP
identified that the City would need to achieve a 10 percent reduction from 2005 levels by 2020 and
28 percent reduction from 2005 levels by 2035. As indicated in Table 3.16-2, the 2025 Project would
result in 16,694 MTCO2e per year. The 2025 Project would reduce GHG emissions by 5,970 MTCO2e
per year, approximately 26 percent, compared to the emission estimate for the 2014 Addendum. The
2025 Project would be consistent with the goals of AB 32 and the GGRP set forth by the City for the
64 City of La Quinta. 2035 La Quinta General Plan.
Meridian Consultants
3.0-76 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
purpose of reducing the emissions of greenhouse gases by 10 percent below 2005 levels and by 28
percent below 2005 levels in 2035. The 2025 Project would not conflict with AB 32 or the GGRP.
GHG impacts associated with the 2025 Project would be similar to those identified in the Previous
Assessments and would be less than significant. No new significant impacts or increase in the
severity of any previously identified significant impacts would result from changes to the 2025
Project, new information, or changes to the circumstances under which the 2025 Project will be
undertaken.
Meridian Consultants
3.0-77 SilverRock Resort Project Addendum
September 2025
3.0—Impact Analysis
Meridian Consultants
3.0-78
SilverRock Resort Project Addendum
September 2025
4.0 REFERENCES
Brawner, Lee B., Donald L., Jr." Determining Your Public Library's Future Size: A Needs Assessment
and Planning Model." Institute of Education Sciences. 1996. Accessed July
2025. https://eric.ed.gov/?id=ED392455&utm_.
Cal Fire Riverside Unit Riverside County Fire Department. "RE: East Lake Plan Amendment #11
Project Request for Information." Accessed July 2025. https://www.lake-
elsinore.org/DocumentCenter/View/1926/Appendix-J---Correspondence-with-Police-and-
Fire-PDF#::text=Type%201 %20Engine-
,(structural%20firefighting%20apparatus).,stations%20to%20the%20project%20site?.
CalFire. "Fire Hazard Severity Zones." Accessed July
2025. https://experience.arcgis.com/experience/03beab8511814e79a0e4eabf0d3e7247/.
California Air Resources Board. "2022 Scoping Plan Documents." https://ww2.arb.ca.gov/our-
work/programs/ab-32-climate-change-scoping-plan/2022-scoping-plan-
documents#:—:text=The%202022%20Scoping%20Plan%20for,d irected%20by%20Assembl
y%20Bill%201279. Accessed July 2024.
California Air Resources Board. California's 2017 Climate Change Scoping Plan. 2017.
ww2.arb.ca.gov/sites/default/files/classic/cc/scopingplan/scoping_plan_2017.pdf.
California Air Resources Board. Climate Change Scoping Plan: A Framework for Change.
https://www.arb.ca.gov/cc/scopingplan/document/adopted_scoping_plan.pdf. Accessed
July 2025.
California Department of Finance. "E-5 Population and Housing Estimates for Cities, Counties, and
the State, 2020-2025." Accessed July 2025.
https://dof.ca.gov/forecasting/demographics/estimates/e-5-population-and-housing-
estimates-fo r-c ities-co u nti es -a n d-the-state-2020-2025/.
California Environmental Protection Agency, Air Resources Board. "California 1990 Greenhouse
Gas Emissions Level and 2020 Limit (2014)."
http://www.arb.ca.gov/cc/inventory/1990level/1990level.htm. Accessed July 2025.
California Government Code. Section 66477. "Quimby Act."
CalRecycle. "2023 Riverside Unincorporated Electronic Annual Report Summary." Accessed July
2025. https://rcwaste.org/sites/g/files/aldnop376/files/2024-08/2023%20EAR%20-
%20Jurisdiction%20Summary.pdf.
Caltrans. "California State Scenic Highways." Accessed July 2025.
https://caltrans.maps.arcgis.com/apps/webappviewer/index.html?id=465dfd3d807c46cc
8e8057116f1aacaa.
CEQA Guidelines, Sections 15162-15164.
Meridian Consultants
4.0-1 Addendum to the 5ilverRock Resort Project
September 2025
4.0—References
City of La Quinta Municipal Code, sec. 6.08.060. Disturbances by Construction Noises.
City of La Quinta. "Amendment No. 3 To Purchase, Sale, and Development Agreement." Accessed
September 2025.
https://laglaserweb.laquintaca.gov/WebLink/DocView.aspx?dbid=1 &id=505711 &repo=Cit
yofLaQuinta.
City of La Quinta. "General Plan Preferred Land Use Map." August 2022. Accessed July 2025.
https://www.laquintaca.gov/home/showpublisheddocument/48031 /638119809636070000
City of La Quinta. "Historic Resource Survey and Context Statement." Accessed August 2025.
https://www.laquintaca.gov/home/showpublisheddocument/48755/638373717730870000
City of La Quinta. 2035 La Quinta General Plan EIR. Accessed July 2025.
https://laglaserweb.laquintaca.gov/WebLink/Browse.aspx?id=104281 &dbid=1 &repo=Cityo
fLaQuinta.
City of La Quinta. 2035 La Quinta General Plan. (p. 11-191). Accessed July 2025.
https://www.laq u i ntaca.gov/home/showpu blisheddocument/33559/636340813730530000
City of La Quinta. 2035 La Quinta General Plan. Chapter IV, Environmental Hazards. Flooding and
Hydrology. "Exhibit IV-6. FEMA Flood Zones and Flood Control Facilities." 2013.
https://www.laquintaca.gov/business/design-and-development/planning-division/2035-la-
quinta-general-plan. Accessed July 2025.
City of La Quinta. 2035 La Quinta General Plan. Economic Development. 2013. p. II-168.
City of La Quinta. 2035 La Quinta General Plan. Energy and Mineral Resources. Mineral Resource
Zone Map. "Exhibit III-1." 2013.
City of La Quinta. Building Codes. Accessed July 2025.
https://www.laquintaca.gov/business/design-and-development/building-division/building-
codes.
City of La Quinta. City of La Quinta General Plan Update Noise Element Technical Report. June
2013.
https://laglaserweb.laquintaca.gov/WebLink/DocView.aspx?id=104300&dbid=1 &repo=Cit
yofLaQuinta. Accessed July 2025.
City of La Quinta. City of La Quinta General Plan Update: Biological Resources. June 2010.
City of La Quinta. General Plan Noise Element. Accessed July 2025.
https://www.laquintaca.gov/home/showpublisheddocument/33565/638187961508370000
City of La Quinta. General Plan Update. Cultural Resources Technical Report (2010).
Meridian Consultants
4.0-2 Addendum to the 5ilverRock Resort Project
September 2025
4.0—References
City of La Quinta. Historic Preservation. "Historic Resources Survey/Database and Map." Historic
Resources Inventory Database. 2012.
City of La Quinta. SilverRock Resort Specific Plan. 2006.
City of La Quinta. Technical Background Report to the Safety Element of the La Quinta 2035
General Plan Update. Seismic Hazards. Geologic Hazards. Flooding Hazards. June 2010.
Coachella Valley Water District. 2020 Coachella Valley Regional Urban Water Management Plan.
Accessed July 2025. http://cvwd.org/DocumentCenter/View/5482/Coachella-Valley-
RUWMP.
Coachella Valley Water District. Coachella Valley Water Management Plan Update. January2012.
Corey, Kennon A., and David Elms. U.S. Fish and Wildlife Service and California Department of Fish
and Wildlife. Notification that Peninsular Bighorn Sheep (Ovis Canadensis nelsoni) are
using artificial sources of food in unfenced urban areas in the City of La Quinta, Riverside
County, California Letter. February 28, 2014.
Department of Finance. "Total State Population." Accessed July 2025. https://dof.ca.gov/wp-
content/uploads/sites/352/Forecasting/Demographics/Documents/E-
1 _2025_Press_Release.pdf.
Department of Toxic Substances Control. "EnviroStor." Accessed July 2025.
https://www.envirostor.dtsc.ca.gov/public/search?basic=True.
Desert Sands Unified School District. "Fee Justification Study for New Residential and
Commercial/Industrial Development." 2020. Accessed July 2025. https://cdnsm5-
ssl 8.sharpschool.com/Userfiles/DBFiles/server_24405182/202005/30304416.pdf.
South Coast Air Quality Management District. "General Forecast Areas and Air Monitoring Areas."
Map. http://www.agmd.gov/docs/default-source/default-document-library/map-of-
monitoring-areas.pdf. Accessed July 2025.
South Coast Air Quality Management District. Example 1 of SCAQMD "Fact Sheet" for Applying
Ca1EEMod to Localized Significance Thresholds. http://www.agmd.gov/docs/default-
source/ceqa/handbook/localized-significance-thresholds/caleemod-
guidance.pdf?sfvrsn=2. Accessed July 2023.
South Coast Air Quality Management District. Final 2022 Air Quality Management Plan. December
2, 2022. http://www.agmd.gov/docs/default-source/clean-air-plans/air-quality-
management-plans/2022-air-quality-management-plan. Accessed July 2025.
South Coast Air Quality Management District. Final Localized Significance Threshold (LST)
Methodology. July 2008. Accessed March 2025. http://www.aqmd.gov/docs/default-
source/ceqa/handbook/localized-significance-thresholds/final-lst-methodology-
document.pdf?sfvrsn=2.
Meridian Consultants
4.0-3 Addendum to the SilverRock Resort Project
September 2025
4.0—References
Southern California Association of Governments. "Final Connect SoCal 2024 Demographics and
Growth Forecast." Accessed July 2025. https://scag.ca.gov/connect-socal.
State Water Resources Control Board. "GeoTracker." Accessed July 2025.
https://geotracker.waterboards.ca.gov/.
Meridian Consultants
4.0-4 Addendum to the 5ilverRock Resort Project
September 2025
PROJECT NAME: The Ranch/SilverRock Resort
5.0 MITIGATION MONITORING PROGRAM
CITY OF LA QUINTA
MITIGATION MONITORING PROGRAM
SCH No.: 1999081020 APPROVAL DATES: May 15th, 2002/July 18th, 2006/July 15, 2014
The Mitigation Monitoring Program (MMP) has been prepared in conformance with Section 21081.6 of the California Environmental Quality Act. It is the
intent of this program to (1) verify satisfaction of the required mitigation measures; (2) provide a methodology to document implementation of the required
mitigation; (3) provide a record of the Monitoring Program; (4) identify monitoring responsibility; (5) establish administrative procedures for the clearance of
mitigation measures; (6) establish the frequency and duration of monitoring; and (7) utilize existing review processes wherever feasible.
The following environmental mitigation measures were incorporated into the approval for this project in order to mitigate potentially significant environmental
impacts to a level of insignificance. A completed and signed checklist for each mitigation measure indicates that this mitigation measure has been complied
with and implemented and fulfills the City of La Quinta's monitoring requirements with respect to Assembly Bill 3180 {Public Resources Code Section 21081.6).
Topic
Potential
Impact
Mitigation Measure
Verification of
Method of Review Responsible Monitoring Compliance
Verification Agency Milestone
Initial I Date I Remarks
Geology
The soils at
the site have
the potential
for hydro
consolidation
with the
addition of
water
MM GEO-1
Prior to the design and construction of
any structural improvements, a
comprehensive design -level
geotechnical evaluation shall be
prepared that includes subsurface
exploration and laboratory testing.
Recommendations for
grading/earthwork, surface and
subsurface drainage, foundations,
pavement structural sections, and
other pertinent geotechnical design
considerations shall be formulated and
implemented based on the findings of
this evaluation.
Meridian Consultants
Error! Reference source not found.
Receipt of site specific
geotechnical/ Engineering
plans for the Project
5.0-1
City of La
Quinta
Prior to the
issuance of any
grading permits
Addendum to the SilverRock Resort Project
September 2025
5.0—Mitigation Monitoring Program
Topic
Potential
Impact
Mitigation Measure
Method of Review
Verification
Responsible Monitoring
Agency Milestone
Verification of
Compliance
Initial I Date I Remarks
The Project
Site would be
subject to
ground
shaking
during a
seismic
event.
Water The project
would use
potable water
for dust
suppression
instead of
reclaimed
water
Cumulative
use of potable
water for
irrigation
would
incrementally
contribute to
the demand
on water
supplies
The project
will result in
changes to
absorption
rates,
Meridian Consultants
MM GEO-2
All buildings planned as a result of the
Proposed Project shall be constructed
in conformance with the Uniform
Building Code, as adopted by the City of
La Quinta.
MM W-2
During construction activities, water
trucks are to acquire water from non -
potable water sources, such as reclaimed
water and/or canal water.
MM W-1
At such time that non -potable water
sources become available to the
project site, the project shall connect to
this resource and utilize the non -
potable water for irrigation purposes.
MM W-4
Drought tolerant landscaping shall be
utilized as a means of reducing water
consumption.
MM W-3
A hydrology master plan shall be
prepared for the Project Specific Plan.
Further, a hydrology study shall be
prepared to support the hydrology
Review of construction plans City of La
Quinta
Field inspection
Review of landscape and
project plans to identify the
ability to connect to non -
potable water sources in the
future
Review of landscape and
project plans
Prior to the
issuance of any
building permits
City of La Ongoing during
Quinta construction
City of La
Quinta and
Coachella
Valley
Water
District
City of La
Quinta
Receipt of site hydrology City of La
master plan and study for the Quinta
Project
5.0-2
Prior to the
issuance of
building
permits.
Prior to the
issuance of
building permits
Prior to the
issuance of
grading permits
This
mitigation
measure
has
already
Addendum to the SilverRock Resort Project
September 2025
5.0—Mitigation Monitoring Program
Topic
Potential
Impact
Mitigation Measure
Method of Review
Verification
Responsible Monitoring
Agency Milestone
Verification of
Compliance
Initial I Date I Remarks
drainage
patterns, or
the rate and
amount of
surface runoff
Meridian Consultants
master plan. This study shall
demonstrate that the project would
construct storm drainage and
hydrologic improvements, such as on -
site stormwater retention basins, that
conform to the City's master hydrology
and storm drain improvement program
as well as implement regional and local
requirements, policies, and programs.
MM W-5
Prior to the initiation of any
construction activity on the project site,
a Notice of Intent (NOI), Storm Water
Pollution Prevention Plan (SWPPP), and
Monitoring Plan will be filed with the
RWQCB under the general NPDES
construction permit. The SWPPP shall
include Best Management Practices
(BMPs) in compliance with the NPDES
program requirements.
MM W-6
Any existing groundwater wells located
on the site that are no longer in use
shall be abandoned in accordance with
federal, State, and local laws and
regulations prior to the issuance of
building permits.
Provide NOI and verification Regional
that it was sent to RWQCB Water
Quality
Control
Board
Review of construction plans City of La
Quinta
5.0-3
Prior to the
issuance of any
grading permits
Prior to the
issuance of any
grading permits
been
implement
ed. No
further
action is
required.
This
mitigation
measure
has
already
been
implement
ed.
No further
action is
required.
Addendum to the SilverRock Resort Project
September 2025
5.0—Mitigation Monitoring Program
Topic
Potential
Impact
Mitigation Measure
Method of Review
Verification
Responsible Monitoring
Agency Milestone
Verification of
Compliance
Initial I Date I Remarks
Water from
golf course
operation
would contain
pollutants
that impact
groundwater
quality
Air Quality Construction
activity
generates
vehicular air
quality
pollutants
Meridian Consultants
MM W-8
Design of new roads, golf courses, man-
made ponds, common landscape
areas, storm water basins, and other
facilities shall incorporate proper
engineering controls to channel storm
and irrigation runoff into
detention/retention facilities that are
sized to plans accommodate design
year storms and that incorporate
filtration systems or other devices to
reduce the potential for herbicides,
pesticides, fertilizers, and other
contaminants to percolate to
groundwater or surface water runoff.
MM W-7
Prior to operation of the golf course, the
golf course operator shall prepare a
Golf Course Management Plan that
includes an irrigation plan, water usage
plan, and chemical management plan
in order to reduce, to the extent
feasible, golf course irrigation runoff
and percolation into the groundwater
basin.
MM AQ-1
Construction equipment shall be
phased and operated in a manner to
ensure the lowest construction -related
pollutant emission levels practical, and
shall require the use of water trucks,
temporary irrigation systems and other
Review of site, storm
drainage and landscape
plans
Receipt of Golf Course
Management Plan
Review of construction
management plan
5.0-4
City of La
Quinta
City of La
Quinta
City of La
Quinta
Prior to the
issuance of
grading permits
Prior to the
issuance of
operation permit
Prior to issuance
of grading
permit
This
mitigation
measure
has
already
been
implement
ed.
No further
action is
required.
Addendum to the SilverRock Resort Project
September 2025
5.0—Mitigation Monitoring Program
Topic
Potential
Impact
Mitigation Measure
Method of Review
Verification
Responsible Monitoring
Agency Milestone
Verification of
Compliance
Initial I Date I Remarks
measures which will limit fugitive dust
emissions during site disturbance and
construction.
MM AQ-3
A PMlo Management Ran for
construction operations shall be
submitted prior to the issuance of
grading permits. The plan shall include
dust management controls such as:
• Water site and equipment when
appropriate
• Spread soil binders on site,
unpaved roads, and parking areas
• Re-establish ground cover on
construction site through seeding
and watering
• Pave construction roads, where
appropriate
• Operate street -sweepers on paved
roads adjacent to site when
appropriate
• The following measures shall be
implemented to reduce
construction related traffic
congestion:
• Configure construction parking to
minimize traffic disturbance
• Minimize obstruction of through -
traffic lanes
• Provide flag person toensure safety
at construction sites, as necessary
Meridian Consultants
Review of construction
management plan
5.0-5
City of La Prior to issuance
Quinta of building
permit
Addendum to the SilverRock Resort Project
September 2025
5.0—Mitigation Monitoring Program
Topic
Potential
Impact
Mitigation Measure
Method of Review
Verification
Responsible Monitoring
Agency Milestone
Verification of
Compliance
Initial I Date I Remarks
Operation of
the proposed
project would
result in
increased air
pollutant
emissions.
Meridian Consultants
• Schedule operations affecting
roadways for off- peak traffic hours
• Provide rideshare incentives to
construction personnel
MM AQ-2
Air quality control measures identified
in the Coachella Valley PM10 State
Implementation Plan shall be
implemented.
MM AQ-13
To reduce VOC emissions associated with
architectural coatings, water -based or
low-VOC coatings shall be used and
applied with spray equipment with high
transfer efficiency and/or the need for
paints and solvents should be reduced by
using pre -coated building materials or
naturally colored building materials.
M M AQ-4
Timeshare and golf facility construction
shall utilize solar or low emission water
heaters to reduce natural gas
consumption and emissions.
M M AQ-5
Timeshare and golf facility construction
shall utilize built-in energy -efficient
appliances to reduce energy
consumption and emissions.
Review of dust control plan City of La
Quinta
Review of construction
management plan
City of La
Quinta
Review of construction and City of La
site plans Quinta
5.0-6
Prior to issuance
of building
permit
Prior to issuance
of building
permit
Prior to issuance
of occupancy
permit
or
Prior to issuance
of grading
permit
Addendum to the SilverRock Resort Project
September 2025
5.0—Mitigation Monitoring Program
Topic
Potential
Impact
Mitigation Measure
Method of Review
Verification
Responsible Monitoring
Agency Milestone
Verification of
Compliance
Initial I Date I Remarks
MM AQ-6
Shade trees shall be provided in close
proximity to Timeshare, hotel and golf
facility structures to reduce building
heating/cooling needs.
MM AQ-7
Timeshare and golf facility construction
shall utilize energy -efficient and
automated controls for air conditioners to
reduce energy consumption and
emissions.
MM AQ-8
Timeshare and golf facility construction
shall be constructed using special
sunlight -filtering window coatings or
double -paned windows to reduce thermal
gain or loss.
MM AQ-9
Timeshare and golf facility construction
shall utilize automatic lighting on/off
controls and energy -efficient lighting
(including parking areas) to reduce
electricity consumption and associated
emissions.
MM AQ-10
Timeshare and golf facility construction
shall use light- colored roofing materials
in residential construction as opposed to
dark roofing materials.
Meridian Consultants
5.0-7
Addendum to the SilverRock Resort Project
September 2025
5.0—Mitigation Monitoring Program
Topic
Potential
Impact
Mitigation Measure
Method of Review
Verification
Responsible Monitoring
Agency Milestone
Verification of
Compliance
Initial I Date I Remarks
Transportat
ion and
Circulation
Biological
Resources
Increases in
local roadway
volumes
would
incrementally
decrease
intersection
LOS
During
construction
and
landscaping
activities,
impacts to
common
wildlife would
occur
Meridian Consultants
MM AQ-11
Bus stops shall be positioned at locations
on and adjacent to the site to be
determined in coordination with the bus
transit service provider that will serve the
project area. Bus stops should be
generally located'/a mile walking distance
from Timeshare units.
MM AQ-12
The golf course shall design on -site
circulation plans for clubhouse parking to
reduce vehicle queuing.
MM TRANS-1
A traffic signal shall be installed at the
Project entrance and Avenue 52, the
Project entrance and Jefferson Street and
at the intersection of Avenue 54 and
Jefferson Street when and if they are
warranted. The developer of the site shall
be responsible for payment of a fair share
of the cost of installing these signals.
MM BIO-10
Efforts shall be made to ensure that all
pesticides, fungicides, herbicides and
fertilizers used during the construction
and operation of the Project Site will not
be harmful to wildlife.
Warrant study
City of La Ongoing
Quinta
Review of Construction and City of La
Landscaping plan Quinta
5.0-8
Prior to the
issuance of
grading permits
Addendum to the SilverRock Resort Project
September 2025
5.0—Mitigation Monitoring Program
Topic
Potential
Impact
Mitigation Measure
Method of Review
Verification
Responsible Monitoring
Agency Milestone
Verification of
Compliance
Initial I Date I Remarks
During
construction
and
operation,
there is a
potential
impact to
Peninsular
bighorn
sheep and
other wildlife
Potential
impact to
Peninsular
bighorn
sheep from
increased
human
presence on
Project Site
Meridian Consultants
MM BIO-5
A construction plan shall be prepared and
demonstrate, to the extent practicable,
construction activities that emit
excessive noise will be avoided adjacent
to the hillside. In addition, during grading
and construction activities any blasting or
pile -driving near the hillside will not occur
during the period from Jan. 1 through June
30th.
MM BIO-8
The landscape plan shall include only
plants that are non -toxic to wildlife. All
exotic plans such as tamarisk and
fountain grass are prohibited. Existing
trees may remain.
MM BIO-1
A mountain toe -of -slope buffer/mitigation
concept plan has been prepared to
protect peninsular big horn sheep, and
other wildlife, from entering the non -
landscape and mountainous portion of
the site proposed for development. This
concept plan illustrates a continuous
buffer to the toe -of -slope in areas where
development could occur adjacent to the
mountain edge. The concept plan
delineates the location, acreage and
Review of Construction plan
City of La
Quinta
Review of project landscape City of La
plan Quinta
Review of construction,
landscape and site plan
(Agency shall, to the extent
practical, widen the
narrowest points of the
buffer areas to minimize the
impacts on the hillside)
5.0-9
City of La
Quinta
Prior to the
issuance of
grading permits
Prior to issuance
of building
permit
Prior to the
issuance of
grading permits
This
mitigation
measure
has
already
been
implement
ed.
No further
action is
required.
Addendum to the SilverRock Resort Project
September 2025
5.0—Mitigation Monitoring Program
Topic
Potential
Impact
Mitigation Measure
Method of Review
Verification
Responsible Monitoring
Agency Milestone
Verification of
Compliance
Initial I Date I Remarks
native plant species envisioned for the
mitigation area.
This plan shall be incorporated into the
project design and shall be subject to
review by the City prior to issuance of
grading permits.
A copy of this mountain toe -of -slope
buffer/mitigation concept plan is
available for review at the City of La
Quinta Community Development
Department.
MM BIO-2
If Bighorn Sheep enter onto the Project
Site, an 8-foot fence (or the functional
equivalent) between the development
and the hillside shall be constructed. The
gaps should be 11 centimeters (4.3
inches) or less. If determined necessary,
the City shall construct temporary
fencing while permanent fencing is
constructed. The fence shall not contain
gaps in which Bighorn Sheep can be
entangled. If the Agency transfers or
disposes of any of the property adjacent
to the hillside, the Agency shall reserve an
easement sufficient for the construction
of fencing if needed in the future.
Meridian Consultants
The Agency shall guarantee City of La Ongoing
to pay the design and Quinta
construction costs for the
fencing, and that if the
property is transferred, it
shall require that the
subsequent owner bond or
posts sufficient security for
the completion of the fence
should it arise in the future.
5.0-10
This
mitigation
measure
has
already
been
implement
ed.
No further
action is
required.
Addendum to the SilverRock Resort Project
September 2025
5.0—Mitigation Monitoring Program
Topic
Potential
Impact
Mitigation Measure
Method of Review
Verification
Responsible Monitoring
Agency Milestone
Verification of
Compliance
Initial I Date I Remarks
There is a
potential
impact from
nighttime
light on
wildlife
There is a
potential
impact from
glare and
exterior
lighting on
wildlife
Meridian Consultants
MM BIO-3
Dogs shall not be permitted to be loose
within the project area, and shall be kept
away from the hillside areas through
appropriate signage and fencing, where
applicable.
MM BIO-4
Access into the hillside area from the site
will be discouraged through the use of
signs or barricades, if necessary, unless
the access is provided as part of a trail
system that is approved by the USFWS
and CDFG.
MM BIO-6
The final design of the project shall
ensure that road and driveways are
designed to minimize headlight shine
from vehicles onto the hillside.
MM BIO-7
In all areas adjacent to the hillsides, non -
glare glass shall be used in new
construction. Exterior building lights shall
not shine on the hillside. Exterior lighting
shall be kept at the safest possible
Review of landscape and
signage plan
City of La Ongoing
Quinta
Review of site and signage City of La Prior to issuance This
plan Quinta, of occupancy mitigation
CDFG, permit measure
USFWS has
already
been
implement
ed.
Review of site and City of La Prior to the
construction plan Quinta issuance of
grading permit
Review of site and City of La Prior to the
construction plan Quinta issuance of
building permit
5.0-1 1
No further
action is
required.
Addendum to the SilverRock Resort Project
September 2025
5.0—Mitigation Monitoring Program
Topic
Potential
Impact
Mitigation Measure
Method of Review Responsible Monitoring
Verification Agency Milestone
Verification of
Compliance
Initial I Date I Remarks
Potential
impact to
mesquite
hummock
habitat
Potential
impact to
areas under
the
Meridian Consultants
minimum intensity and aimed away from
the hillside.
MM BIO-9
All swimming pools located on the Project
Site shall be fenced pursuant to City
regulations.
MM BIO-11
Prior to any construction or site
preparation activities that would impact
the 3.4 acres of mesquite hummock, the
agency or project developer shall enter
into a Memorandum Of Understanding
(MOU) with CDFG and an appropriate
non-profit organization whose purpose is
to acquire and manage land for the
purpose of protecting special status
plants and wildlife. This MOU shall
provide the organization chosen the
financial resources necessary to
purchase and manage 3.4 acres of
mesquite hummock in the Willow Hole
area or in another area where the habitat
is contiguous and large preserves already
protect much of this habitat type. The
exact location and cost shall be
determined through consultation with
CDFG and the selected organization.
MM BIO-12
Prior to the commencement of on -site
grading, a 404 permit shall be obtained, if
legally required, for alteration of areas
Review of construction plan City of La Prior to the
Quinta issuance of
grading permit
Verification of receipt of City of La Prior to the
financial security instrument Quinta, issuance of
and copy of the MOU CDFG grading permit
This
mitigation
measure
has
already
been
implement
ed.
No further
action is
required.
Receipt of required permits City of La Prior to the This
Quinta, issuance of mitigation
CDFG,ACO grading permit measure
E has
5.0-12
Addendum to the SilverRock Resort Project
September 2025
5.0—Mitigation Monitoring Program
Topic
Potential
Impact
Mitigation Measure
Method of Review
Verification
Responsible Monitoring
Agency Milestone
Verification of
Compliance
Initial I Date I Remarks
jurisdiction of
the ACOE and
the CDFG
Hazards Exposure to
asbestos is a
significant
impact
Noise Construction
noise would
impact local
residents and
sensitive
receptors
Meridian Consultants
under the ACOE jurisdiction. In addition,
if development activities are to take place
within streambeds or drainages under the
jurisdiction of the CDFG, a streambed
alteration agreement shall first be
obtained, if legally required.
MM HAZ-1
Prior to the demolition or renovation of
the on -site single family residence,
asbestos containing materials (ACM)
shall be removed in accordance with
current regulatory guidelines.
MM N-1
Between May 1 and September 30, all
construction activities on the project site
shall only occur between the hours of
6:00 AM and 7:00 PM Monday through
Friday, and from 8:00 AM to 5:00 PM on
Saturday, and shall be prohibited on
Sundays and public holidays. Between
October 1 and April30, all construction
activity on the project site shall only
occur between the hours of 7:00 AM and
5:30 PM Monday through Friday, and from
8:00 AM to 5:00 PM on Saturday, and shall
Proof that a qualified City of La
demolition team has been Quinta
retained
Review of construction plans City of La
Quinta
5.0-1 3
Prior to the
issuance of
demolition
permit
Prior to the
issuance of
grading permit
already
been
implement
ed.
No further
action is
required.
This
mitigation
measure
has
already
been
implement
ed.
No further
action is
required.
Addendum to the SilverRock Resort Project
September 2025
5.0—Mitigation Monitoring Program
Topic
Potential
Impact
Mitigation Measure
Method of Review
Verification
Responsible Monitoring
Agency Milestone
Verification of
Compliance
Initial I Date I Remarks
be prohibited on Sundays and public
holiday. All operational activities of the
Project shall also be subject to the Noise
Ordinance of the City as well.
MM N-2
All construction equipment operating in
the planning area shall be fitted with well -
maintained functional mufflers to limit
noise emissions.
MM N-3
To the greatest extent feasible, earth
moving and hauling routes shall be
located away from existing residences.
MM N-4
The design, selection and placement of
the mechanical equipment for various
buildings shall include consideration of
the potential noise impact they may have
on uses within the development site.
MM N-5
Silencers and/or barriers shall be
provided where necessary at outdoor
equipment, such as cooling towers, air
cooled condensers and refrigeration
compressors/condenser units, and at the
air intake and discharge openings for
building ventilation systems.
Meridian Consultants
Review of construction plans City of La Prior to the
Quinta issuance of
grading permit,
ongoing
throughout
construction
Review of construction plans City of La Prior to the
Quinta issuance of
grading permit
Review of construction plans City of La Prior to the
Quinta issuance of
building permit
Review of construction plans City of La Prior to the
Quinta issuance of
building permit
5.0-14
Addendum to the SilverRock Resort Project
September 2025
5.0—Mitigation Monitoring Program
Topic
Potential
Impact
Mitigation Measure
Method of Review
Verification
Responsible Monitoring
Agency Milestone
Verification of
Compliance
Initial I Date I Remarks
Public
Services
Utilities
and Service
Systems
The proposed
project would
incrementally
increase
demand for
service on the
Riverside
County Fire
Department
The proposed
project would
incrementally
increase
demand for
service on the
Riverside
County
Sheriff
Department
The project
would result
in an
incremental
increase in
electrical
demand
Meridian Consultants
MM PUB-1
The Riverside County Fire Department, in
its review of new development proposals,
shall evaluate project plans and the
Department's ability to provide proper fire
protection. This review shall include, but
shall not be limited to, internal
circulation, project directories, street
names, and numbering systems. New
developments shall comply with all City
and Fire Department standards.
MM PUB-2
The Riverside County Sheriff's
Department shall review new
development proposals in order to
evaluate project plans and the
Department's ability to provide adequate
police protection. This review should
include, but not be limited to internal
circulation, project directories, street
names, and numbering systems. New
developments shall comply with all
established City and Sheriff standards.
MM UTIL-1
The most efficient furnaces, water
heaters, pool heaters and other
equipment that use natural gas shall be
used in project construction. The use of
kitchen appliances that use natural gas
and alternative, renewable energy
sources, including solar and wind turbine
Review of site and landscape Riverside
County Fire
Department
and City of
La Quinta
plan
Review of site and landscape Riverside
plan County
Sheriff
Department
and City of
La Quinta
Review of construction plan City of La
Quinta
5.0-1 5
Prior to the
issuance of
grading permit
Prior to the
issuance of
grading permit
Prior to the
issuance of
building permits
Addendum to the SilverRock Resort Project
September 2025
5.0—Mitigation Monitoring Program
Topic
Potential
Impact
Mitigation Measure
Method of Review
Verification
Responsible Monitoring
Agency Milestone
Verification of
Compliance
Initial I Date I Remarks
The use of
septic
systems in
the City could
result in
potential
impacts
Meridian Consultants
technologies shall also be used to the
greatest extent feasible.
MM UTIL-2
Title 24 of the California Administrative
Code, which addresses energy
conservation in all proposed uses shall
be strictly enforced in project design and
construction.
MM UTIL-3
All planned uses shall be connected to
the city-wide sewer system.
MM UTIL-7
Any existing or historic septic systems
located on the site shall be abandoned in
accordance with Federal, State, and local
laws and regulations prior to the issuance
of building permits.
Review of construction plan City of La
Quinta
Review of construction plan Coachella
Valley
Water
District
Review of construction plan Coachella
Valley
Water
District and
City of La
Quinta
5.0-16
Prior to the
issuance of
building permits
Prior to issuance
of grading
permit
Prior to issuance
of grading
permit
This
mitigation
measure
has
already
been
implement
ed.
No further
action is
required.
This
mitigation
measure
has
already
been
implement
ed.
No further
action is
required.
Addendum to the SilverRock Resort Project
September 2025
5.0—Mitigation Monitoring Program
Topic
Potential
Impact
Mitigation Measure
Method of Review
Verification
Responsible Monitoring
Agency Milestone
Verification of
Compliance
Initial I Date I Remarks
The
incremental
increase in
solid waste
generation
could result in
potential
impacts
The
incremental
demand from
the project on
utility
systems
could result in
potential
impacts
Aesthetics The project
area is
adjacent to a
scenic area.
Development
would alter
the aesthetic
nature of the
area
Meridian Consultants
MM UTIL-4
A recycling program shall be developed
for all proposed uses. Recycling
provisions for commercial and business
establishments should include separate
recycling bins. Items to be recycled at
commercial establishments may include
white paper, computer legal paper,
cardboard, glass and aluminum cans.
MM UTIL-5
Professional landscaping services from
companies which compost green waste
shall be utilized.
MM UTIL-6
The Projects fair share of public utilities,
infrastructure and improvements required
to properly service the proposed uses
shall be determined through consultation
with the City Department of Public Works
and paid prior to the issuance of grading
permits.
MM AES-1
Landscape designs and materials that
complement the native desert
environment shall be utilized in project
design and construction.
Receipt of recycling program City of La
Quinta
Verification that a qualified
landscaping service has
been retained
Verification of receipt of
financial security
instrument.
Review of landscape and
design plans
5.0-1 7
City of La
Quinta
City of La
Quinta
City of La
Quinta
Prior to the
issuance of
occupancy
permit
Prior to the
issuance of
occupancy
permit
Prior to the
issuance of
grading permit
Prior to the
issuance of
grading permit
Addendum to the SilverRock Resort Project
September 2025
5.0—Mitigation Monitoring Program
Topic
Potential
Impact
Mitigation Measure
Method of Review
Verification
Responsible Monitoring
Agency Milestone
Verification of
Compliance
Initial I Date I Remarks
MM AES-2
Overhead utility lines shall be
undergrounded to the greatest extent
possible through the establishment of an
undergrounding program and guidelines
subject to the review of the City Engineer
and Public Works Department.
MM AES-4
Signage shall be limited to the locations,
sizes, and maintenance requirements
necessary to provide functional
identification.
MM AES-5
Safe, convenient vehicular and
pedestrian circulation, screened outdoor
storage/loading and other unsightly
areas, protected and enhanced outdoor
seating areas, appropriate lighting levels,
limited signage, and landscaping designs
that preserve and enhance visual
resources shall be included in the design
of any commercial area on the Project
Site.
MM AES-6
Development proposed along designated
scenic highways, roadways and corridors
shall be reviewed for compatibility with
the natural and built environments to
assure maximum viewshed protection
and pedestrian and vehicular activity.
Meridian Consultants
Review of design and site
plans
Review of design plan
City of La
Quinta
Public
Works and
City
Engineer
Prior to the
issuance of
grading permit
City of La Prior to the
Quinta issuance of
grading permit
Review of landscape and City of La Prior to the
design plans Quinta issuance of
building permit
Review of landscape and City of La Prior to the
design plans Quinta issuance of
grading permit
5.0-18
Addendum to the SilverRock Resort Project
September 2025
5.0—Mitigation Monitoring Program
Topic
Potential
Impact
Mitigation Measure
Method of Review
Verification
Responsible Monitoring
Agency Milestone
Verification of
Compliance
Initial I Date I Remarks
The project
would
introduce
new sources
of light and
glare that
would alter
the existing
nighttime
environment
Cultural There is
Resources potential for
discovery of
unidentified
subsurface
cultural
resources
during future
ground
altering
activities
Meridian Consultants
MM AES-7
All grading and development proposed
within scenic viewsheds, shall be
regulated to minimize adverse impacts to
these viewsheds. All grading,
development and landscaping plans shall
be submitted to the City for review and
approval prior to the issuance of grading
permits.
MM AES-3
Outdoor lighting shall be limited to the
minimum height, number of fixtures, and
intensity needed to provide sufficient
security and identification in each
development, making every reasonable
effort to protect the community's night
skies.
MM CUL-1
During any ground altering activities
associated with project grading or
construction, including demolition of
existing modern structures and facilities,
the project area shall be monitored by a
qualified archaeological monitor. The
monitor shall have the authority to halt
any activities impacting potentially
significant cultural resources until the
resources can be evaluated for
significance and cleared or mitigated. The
monitoring program shall also include
Review of landscape and
design plans
City of La
Quinta
Prior to the
issuance of
grading permit
Review of design and site City of La Prior to the
plans Quinta, issuance of
Riverside building permit
County
Sheriff
Department
Verification that a qualified City of La Prior to issuance
historical consultant has Quinta of grading
been retained permit
5.0-19
Addendum to the SilverRock Resort Project
September 2025
5.0—Mitigation Monitoring Program
Topic
Potential
Impact
Mitigation Measure
Method of Review
Verification
Responsible Monitoring
Agency Milestone
Verification of
Compliance
Initial I Date I Remarks
consultation with the local Native
American representatives (e.g., Torres -
Martinez and/or Morongo Reservations).
Meridian Consultants
5.0-20
Addendum to the SilverRock Resort Project
September 2025
APPENDIX A
Air Quality and Greenhouse Gas
Emissions Outputs
APPENDIX A.1
Proposed Project Construction
(Planning Areas 1,3,4,5)
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
SilverRock Resort Proposed Project Construction Phase 1 (Planning
Areas 1,314,5) Custom Report
Table of Contents
1. Basic Project Information
1.1. Basic Project Information
1.2. Land Use Types
1.3. User -Selected Emission Reduction Measures by Emissions Sector
2. Emissions Summary
2.1. Construction Emissions Compared Against Thresholds
2.2. Construction Emissions by Year, Unmitigated
3. Construction Emissions Details
3.1. Demolition (2026) - Unmitigated
3.3. Grading (2026) - Unmitigated
3.5. Grading (2027) - Unmitigated
3.7. Building Construction (2027) - Unmitigated
3.9. Building Construction (2028) - Unmitigated
3.11. Building Construction (2029) - Unmitigated
1 /28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
3.13. Paving (2029) - Unmitigated
3.15. Architectural Coating (2029) - Unmitigated
4. Operations Emissions Details
4.10. Soil Carbon Accumulation By Vegetation Type
4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated
4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated
4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated
5. Activity Data
5.1. Construction Schedule
5.2. Off -Road Equipment
5.2.1. Unmitigated
5.3. Construction Vehicles
5.3.1. Unmitigated
5.4. Vehicles
5.4.1. Construction Vehicle Control Strategies
5.5. Architectural Coatings
5.6. Dust Mitigation
5.6.1. Construction Earthmoving Activities
2/28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
5.6.2. Construction Earthmoving Control Strategies
5.7. Construction Paving
5.8. Construction Electricity Consumption and Emissions Factors
5.18. Vegetation
5.18.1. Land Use Change
5.18.1.1. Unmitigated
5.18.1. Biomass Cover Type
5.18.1.1. Unmitigated
5.18.2. Sequestration
5.18.2.1. Unmitigated
8. User Changes to Default Data
3/28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
1. Basic Project Information
1.1. Basic Project Information
Data Field
Value
Project Name
Construction Start Date
Lead Agency
Land Use Scale
Analysis Level for Defaults
Windspeed (m/s)
Precipitation (days)
Location
County
City
Air District
Air Basin
TAZ
EDFZ
Electric Utility
Gas Utility
App Version
1.2. Land Use Types
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5)
11 / 1 /2026
Project/site
County
3.00
7.60
33.672095298053605, -116.2796035818008
Riverside -Salton Sea
La Quinta
South Coast AQMD
Salton Sea
5651
19
Imperial Irrigation District
Southern California Gas
2022.1.1.29
Land Use Subtype
Size
Unit
Lot Acreage
Building Area (sq ft)
Landscape Area (sq
ft)
Special Landscape
Area (sq ft)
Population
Description
Hotel
154
Quality Restaurant 7.50
Room
1000sgft
5.13
0.17
250,000
7,500
25,000
750
4/28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
General Office 55.0 1000sgft 1.26 55,000 5,500
Building
General Office 17.0 1000sgft 0.39 17,000 1,700
Building
Golf Course 9.00 Hole 62.8 0.00 0.00
1.3. User -Selected Emission Reduction Measures by Emissions Sector
No measures selected
2. Emissions Summary
2.1. Construction Emissions Compared Against Thresholds
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Un/Mit.
Daily,
Summer
(Max)
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
Unmit. 51.1 51.1 11.6 24.5 0.04 0.36 2.18 2.54 0.33 0.53 0.86
Daily,
Winter
(Max)
0.00
BCO2
NBCO2
CO2T
CH4
N2O
CO2e
5,907 5,907 0.14 0.30 9.57 6,009
Unmit. 52.0 51.8 29.5 28.6 0.08 1.12 8.41 9.40 1.03 1.50 2.42 10,991 10,991 0.27 1.19 0.42 11,352
Average
Daily
(Max)
Unmit. 8.65 8.62 8.94 15.6 0.03 0.29 1.57 1.86 0.27 0.40 0.66 4,148 4,148 0.10 0.21 2.79 4,214
Annual
(Max)
Unmit. 1.58 1.57 1.63 2.84 < 0.005 0.05 0.29 0.34 0.05 0.07 0.12 687 687 0.02 0.04 0.46 698
Exceeds
(Daily
Max)
5/28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
Threshol
d
Unmit.
Exceeds
(Average
Daily)
Threshol
d
Unmit.
75.0
100
550
150
150
55.0
No No No No No No
75.0
100
550
150
No No No No
150
No
55.0
No
2.2. Construction Emissions by Year, Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Year
Daily -
Summer
(Max)
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM 10T
PM2.5E
PM2.5D
PM2.5T
2027 1.94 1.66 11.6 24.5 0.04 0.36 2.18 2.54 0.33 0.53 0.86
2028 1.86 1.58 11.0 23.7 0.04 0.32 2.18 2.50 0.30 0.53 0.83
2029 51.1 51.1 0.88 2.99 < 0.005 0.01 0.34 0.36 0.01 0.08 0.09
Daily -
Winter
(Max)
BCO2
NBCO2
CO2T
CH4
N2O
CO2e
5,907 5,907 0.14 0.30 9.57 6,009
5,833 5,833 0.14 0.30 8.71 5,934
494 494 0.01 0.01 0.89 499
2026 3.71 3.12 29.5 28.6 0.08 1.12 8.41 9.40 1.03 1.50 2.42 10,991 10,991 0.27 1.19 0.42 11,352
2027 3.59 3.02 25.7 28.2 0.06 1.04 2.65 3.70 0.96 1.01 1.97 6,841 6,841 0.27 0.30 0.25 6,866
2028 1.71 1.49 11.2 19.3 0.04 0.32 2.18 2.50 0.30 0.53 0.83 5,563 5,563 0.14 0.30 0.23 5,656
2029 52.0 51.8 10.7 18.9 0.04 0.30 2.18 2.48 0.28 0.53 0.81 5,493 5,493 0.14 0.29 0.20 5,583
Average
Daily
2026 0.38 0.32 3.37 2.81 0.01 0.12 0.78 0.90 0.11 0.16 0.27 1,146 1,146 0.03 0.10 0.58 1,177
2027 1.41 1.19 8.94 15.6 0.03 0.29 1.57 1.86 0.27 0.40 0.66 4,148 4,148 0.10 0.20 2.79 4,214
2028 1.24 1.08 7.94 14.9 0.03 0.23 1.55 1.78 0.22 0.38 0.59 4,061 4,061 0.10 0.21 2.70 4,130
6/28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
2029 8.65 8.62 1.77 3.40 0.01 0.05 0.33 0.38 0.05 0.08 0.13 837 837 0.02 0.04 0.48 849
Annual
2026 0.07 0.06 0.62 0.51 < 0.005 0.02 0.14 0.17 0.02 0.03 0.05 190 190 < 0.005 0.02 0.10 195
2027 0.26 0.22 1.63 2.84 < 0.005 0.05 0.29 0.34 0.05 0.07 0.12 687 687 0.02 0.03 0.46 698
2028 0.23 0.20 1.45 2.71 < 0.005 0.04 0.28 0.33 0.04 0.07 0.11 672 672 0.02 0.04 0.45 684
2029 1.58 1.57 0.32 0.62 < 0.005 0.01 0.06 0.07 0.01 0.01 0.02 139 139 < 0.005 0.01 0.08 141
3. Construction Emissions Details
3.1. Demolition (2026) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
Daily,
Summer
(Max)
Daily,
Winter
(Max)
Off-Roa
d
Equipm
ent
Demoliti
on
Onsite
truck
Average
Daily
Off-Roa
d
Equipm
ent
TOG
2.72
0.00
0.22
ROG
2.29
0.00
0.19
NOx
20.7
0.00
1.70
CO
19.0
0.00
1.56
SO2
0.03
0.00
< 0.005
PM10E
0.84
0.00
0.07
PM10D
6.21
0.00
PM1OT
0.84
6.21
0.00
0.07
PM2.5E
0.78
0.00
0.06
PM2.5D
0.94
0.00
PM2.5T
0.78
0.94
0.00
0.06
BCO2
NBCO2
3,427
0.00
282
CO2T
3,427
0.00
282
CH4
0.14
0.00
0.01
N20
0.03
0.00
< 0.005
0.00
CO2e
3,438
0.00
283
7/28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
Demoliti 0.51 0.51 0.08 0.08
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.04 0.03 0.31 0.29 < 0.005 0.01
d
Equipm
ent
0.01 0.01 0.01 46.6 46.6 < 0.005 < 0.005 - 46.8
Demoliti 0.09 0.09 0.01 0.01
on
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Daily, -
Winter
(Max)
0.00 0.00 0.00 0.00 0.00 0.00
Worker 0.06 0.06 0.08 0.75 0.00 0.00 0.20 0.20 0.00 0.05 0.05 186 186 < 0.005 0.01 0.02 188
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.22 0.14 8.79 1.95 0.05 0.15 2.00 2.15 0.15 0.51 0.66 7,379 7,379 0.07 1.16 0.40 7,726
Average
Daily
Worker 0.01 < 0.005 0.01 0.08 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 - 16.3 16.3 < 0.005 < 0.005 0.02 16.5
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.02 0.01 0.71 0.16 < 0.005 0.01 0.16 0.18 0.01 0.04 0.05 606 606 0.01 0.10 0.55 635
Annual
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 - 2.70 2.70 < 0.005 < 0.005 < 0.005 2.73
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling < 0.005 < 0.005 0.13 0.03 < 0.005 < 0.005 0.03 0.03 < 0.005 0.01 0.01 100 100 < 0.005 0.02 0.09 105
8/28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
3.3. Grading (2026) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM 10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Onsite
Daily, -
Summer
(Max)
Daily, -
Winter
(Max)
Off-Roa 3.62 3.04 27.2 27.6 0.06 1.12
d
Equipm
ent
Dust
From
Material
Movement
1.12 1.03 1.03
2.39 2.39 0.95 0.95
6,599 6,599 0.27 0.05 6,621
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.13 0.11 0.96 0.97 < 0.005 0.04
d
Equipm
ent
0.04 0.04 0.04
Dust 0.08 0.08 0.03 0.03
From
Material
Movement
232 232 0.01 < 0.005 - 233
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
9/28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
Off-Roa 0.02 0.02 0.18 0.18 < 0.005 0.01 0.01 0.01 0.01 38.5 38.5 < 0.005 < 0.005 - 38.6
d
Equipm
ent
Dust 0.02 0.02 0.01 0.01
From
Material
Movement
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Daily, -
Winter
(Max)
Worker 0.08 0.07 0.10 1.00 0.00 0.00 0.26 0.26 0.00 0.06 0.06 248 248 < 0.005 0.01 0.02 251
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker < 0.005 < 0.005 < 0.005 0.04 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 - 9.32 9.32 < 0.005 < 0.005 0.01 9.44
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 - 1.54 1.54 < 0.005 < 0.005 < 0.005 1.56
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.5. Grading (2027) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
10/28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N2O
CO2e
Onsite
Daily, -
Summer
(Max)
Daily, -
Winter
(Max)
Off-Roa 3.51 2.95 25.6 27.3 0.06 1.04
d
Equipm
ent
Dust
From
Material
Movement
1.04 0.96 0.96
2.39 2.39 0.95 0.95
6,598 6,598 0.27 0.05 6,621
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.15 0.13 1.10 1.17 < 0.005 0.04
d
Equipm
ent
0.04 0.04 0.04
Dust 0.10 0.10 0.04 0.04
From
Material
Movement
284 284 0.01 < 0.005 - 285
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.03 0.02 0.20 0.21 < 0.005 0.01
d
Equipm
ent
0.01 0.01 0.01
47.0 47.0 < 0.005 < 0.005 - 47.2
11 / 28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
Dust
From
Material
Movement
Onsite
truck
Offsite
Daily,
Summer
(Max)
Daily,
Winter
(Max)
0.00
0.00
0.00
0.00
0.00
0.00
0.02
0.00
0.02
0.00
0.00
0.01
0.00
0.01
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Worker 0.08 0.07 0.09 0.94 0.00 0.00 0.26 0.26 0.00 0.06 0.06 243 243 < 0.005 0.01 0.02 246
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker < 0.005 < 0.005 < 0.005 0.05 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 - 11.2 11.2 < 0.005 < 0.005 0.02 11.3
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 - 1.85 1.85 < 0.005 < 0.005 < 0.005 1.87
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.7. Building Construction (2027) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM 10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
12/28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
Daily,
Summer
(Max)
Off-Roa 1.23 1.03 9.39 12.9 0.02 0.34 0.34 0.31 0.31 2,397 2,397 0.10 0.02 2,405
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 1.23 1.03 9.39 12.9 0.02 0.34 0.34 0.31 0.31 2,397 2,397 0.10 0.02 2,405
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.83 0.69 6.30 8.68 0.02 0.23 0.23 0.21 0.21 1,609 1,609 0.07 0.01 1,615
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.15 0.13 1.15 1.58 < 0.005 0.04 0.04 0.04 0.04 266 266 0.01 < 0.005 - 267
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily,
Summer
(Max)
13/28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
Worker 0.63 0.56 0.57 10.8 0.00 0.00 1.71 1.71 0.00 0.40 0.40 1,869 1,869 0.02 0.06 5.51 1,894
Vendor 0.09 0.06 1.65 0.72 0.01 0.02 0.46 0.49 0.02 0.13 0.15 1,641 1,641 0.02 0.22 4.06 1,710
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.53 0.47 0.62 6.13 0.00 0.00 1.71 1.71 0.00 0.40 0.40 1,592 1,592 0.02 0.06 0.14 1,611
Vendor 0.08 0.06 1.77 0.73 0.01 0.02 0.46 0.49 0.02 0.13 0.15 1,642 1,642 0.02 0.22 0.11 1,708
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.37 0.33 0.38 5.16 0.00 0.00 1.15 1.15 0.00 0.27 0.27 1,142 1,142 0.01 0.04 1.60 1,156
Vendor 0.06 0.04 1.16 0.48 0.01 0.02 0.31 0.33 0.02 0.09 0.10 1,102 1,102 0.01 0.15 1.18 1,147
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.07 0.06 0.07 0.94 0.00 0.00 0.21 0.21 0.00 0.05 0.05 189 189 < 0.005 0.01 0.26 191
Vendor 0.01 0.01 0.21 0.09 < 0.005 < 0.005 0.06 0.06 < 0.005 0.02 0.02 182 182 < 0.005 0.02 0.19 190
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.9. Building Construction (2028) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
Daily,
Summer
(Max)
Off-Roa
d
Equipm
ent
TOG
1.18
ROG
0.99
NOx
8.92
CO
12.9
SO2
0.02
PM10E
0.30
PM10D
PM10T
0.30
PM2.5E
0.28
PM2.5D
PM2.5T
0.28
BCO2
NBCO2
2,397
CO2T
2,397
CH4
0.10
N20
0.02
CO2e
2,406
14/28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 1.18 0.99 8.92 12.9 0.02 0.30 0.30 0.28 0.28 2,397 2,397 0.10 0.02 2,406
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.85 0.71 6.39 9.26 0.02 0.22 0.22 0.20 0.20 1,717 1,717 0.07 0.01 1,723
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.15 0.13 1.17 1.69 < 0.005 0.04 0.04 0.04 0.04 284 284 0.01 < 0.005 - 285
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.60 0.54 0.51 10.1 0.00 0.00 1.71 1.71 0.00 0.40 0.40 1,834 1,834 0.02 0.06 4.96 1,858
Vendor 0.07 0.05 1.58 0.68 0.01 0.02 0.46 0.49 0.02 0.13 0.15 1,602 1,602 0.02 0.22 3.75 1,670
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
15/28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
Worker 0.46 0.45 0.57 5.69 0.00 0.00 1.71 1.71 0.00 0.40 0.40 1,563 1,563 0.02 0.06 0.13 1,582
Vendor 0.07 0.04 1.70 0.71 0.01 0.02 0.46 0.49 0.02 0.13 0.15 1,603 1,603 0.02 0.22 0.10 1,669
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.35 0.34 0.36 5.12 0.00 0.00 1.22 1.22 0.00 0.29 0.29 1,196 1,196 0.01 0.04 1.53 1,211
Vendor 0.05 0.03 1.19 0.49 0.01 0.02 0.33 0.35 0.02 0.09 0.11 1,148 1,148 0.01 0.16 1.16 1,195
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.06 0.06 0.07 0.93 0.00 0.00 0.22 0.22 0.00 0.05 0.05 198 198 < 0.005 0.01 0.25 200
Vendor 0.01 0.01 0.22 0.09 < 0.005 < 0.005 0.06 0.06 < 0.005 0.02 0.02 190 190 < 0.005 0.03 0.19 198
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.11. Building Construction (2029) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
Daily,
Summer
(Max)
Daily,
Winter
(Max)
TOG
ROG
NOx
CO
SO2
PM10E
Off-Roa 1.15 0.97 8.58 12.9 0.02 0.28
d
Equipm
ent
PM10D
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
0.28 0.25 0.25 2,397 2,397 0.10 0.02 2,405
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
16/28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
Off-Roa 0.14 0.12 1.02 1.54 < 0.005 0.03 0.03 0.03 0.03 286 286 0.01 < 0.005 - 287
d
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.03 0.02 0.19 0.28 < 0.005 0.01
d
Equipm
ent
0.01 0.01 0.01
47.4 47.4 < 0.005 < 0.005 - 47.5
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Daily, -
Winter
(Max)
Worker 0.44 0.37 0.51 5.36 0.00 0.00 1.71 1.71 0.00 0.40 0.40 1,535 1,535 0.02 0.06 0.12 1,554
Vendor 0.07 0.04 1.63 0.68 0.01 0.02 0.46 0.49 0.02 0.13 0.15 1,561 1,561 0.02 0.21 0.09 1,623
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.06 0.05 0.05 0.80 0.00 0.00 0.20 0.20 0.00 0.05 0.05 196 196 < 0.005 0.01 0.23 198
Vendor 0.01 0.01 0.19 0.08 < 0.005 < 0.005 0.05 0.06 < 0.005 0.02 0.02 186 186 < 0.005 0.02 0.18 194
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.01 0.01 0.01 0.15 0.00 0.00 0.04 0.04 0.00 0.01 0.01 - 32.4 32.4 < 0.005 < 0.005 0.04 32.8
Vendor < 0.005 < 0.005 0.03 0.01 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 - 30.8 30.8 < 0.005 < 0.005 0.03 32.1
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
3.13. Paving (2029) - Unmitigated
17/28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
Onsite
Daily,
Summer
(Max)
Daily,
Winter
(Max)
Off-Roa
d
Equipm
ent
0.80
ROG
NOx
CO
SO2
0.67
Paving 0.00 0.00
Onsite
truck
Average
Daily
Off-Roa
d
Equipm
ent
0.00
0.04
0.00
0.04
Paving 0.00 0.00
Onsite
truck
0.00
Annual -
Off-Roa
d
Equipm
ent
0.01
0.00
0.01
Paving 0.00 0.00
Onsite
truck
Offsite
0.00
0.00
6.46
0.00
0.35
0.00
0.06
0.00
9.92
0.00
0.54
0.00
0.10
0.00
0.01
0.00
< 0.005
0.00
< 0.005
0.00
PM10E
PM10D
PM 10T
PM2.5E
PM2.5D
PM2.5T
BCO2
0.24
0.00
0.01
0.00
< 0.005
0.00
0.00
0.00
0.00
0.24
0.00
0.01
0.00
< 0.005
0.00
0.22
0.00
0.01
0.00
< 0.005
0.00
0.00
0.00
0.00
0.22
0.00
0.01
0.00
< 0.005
0.00
NBCO2
CO2T
CH4
N2O
1,511
0.00
82.8
0.00
13.7
0.00
1,511
0.00
82.8
0.00
13.7
0.00
0.06
0.00
< 0.005
0.00
< 0.005
0.00
0.01
0.00
< 0.005
0.00
< 0.005
0.00
R
CO2e
0.00
0.00
0.00
1,516
0.00
83.1
0.00
13.8
0.00
18/28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
Daily, -
Summer
(Max)
Daily, -
Winter
(Max)
Worker 0.05 0.04 0.06 0.61 0.00 0.00 0.20 0.20 0.00 0.05 0.05 176 176 < 0.005 0.01 0.01 178
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker < 0.005 < 0.005 < 0.005 0.04 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 - 10.3 10.3 < 0.005 < 0.005 0.01 10.4
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 - 1.70 1.70 < 0.005 < 0.005 < 0.005 1.72
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.15. Architectural Coating (2029) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Onsite
Daily,
Summer
(Max)
Off-Roa 0.12 0.10 0.79 1.11 < 0.005 0.01
d
Equipm
ent
0.01 0.01 0.01
134 134 0.01 < 0.005 - 134
19/28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
Architect 50.9 50.9
ural
Coating
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.12 0.10 0.79 1.11 < 0.005 0.01 0.01 0.01 0.01 134 134 0.01 < 0.005 - 134
d
Equipm
ent
Architect 50.9 50.9
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.02 0.02 0.13 0.18 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 21.9 21.9 < 0.005 < 0.005 - 22.0
d
Equipm
ent
Architect 8.37 8.37
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa < 0.005 < 0.005 0.02 0.03 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 3.63 3.63 < 0.005 < 0.005 - 3.65
d
Equipm
ent
20 / 28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
Architect 1.53
ural
Coating
s
1.53
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.10 0.10 0.09 1.88 0.00 0.00 0.34 0.34 0.00 0.08 0.08 360 360 < 0.005 0.01 0.89 365
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.09 0.07 0.10 1.07 0.00 0.00 0.34 0.34 0.00 0.08 0.08 307 307 < 0.005 0.01 0.02 311
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.02 0.01 0.01 0.22 0.00 0.00 0.06 0.06 0.00 0.01 0.01 53.9 53.9 < 0.005 < 0.005 0.06 54.6
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.04 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 - 8.93 8.93 < 0.005 < 0.005 0.01 9.04
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
4. Operations Emissions Details
21 /28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
4.10. Soil Carbon Accumulation By Vegetation Type
4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Vegetati
on
TOG
Daily,
Summer
(Max)
Total
Daily,
Winter
(Max)
Total
Annual
Total
ROG
NOx
CO
SO2
PM10E
PM1OD
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Land
Use
Daily,
Summer
(Max)
Total
Daily,
Winter
(Max)
Total
Annual
Total
TOG
ROG
NOx
CO
SO2
PM10E
PM1OD
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
22/28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Species
Daily,
Summer
(Max)
TOG
Avoided —
Subtotal —
Sequest
ered
Subtotal —
Remove
d
Subtotal —
Daily,
Winter
(Max)
Avoided —
Subtotal —
Sequest
ered
Subtotal —
Remove
d
Subtotal —
Annual —
Avoided —
Subtotal —
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N2O
CO2e
23 / 28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
Sequest
ered
Subtotal
Remove
d
Subtotal -
5. Activity Data
5.1. Construction Schedule
Phase Name
Phase Type
Start Date
End Date
Days Per Week
Work Days per Phase
Phase Description
Demolition Demolition 11/1/2026
Grading Grading 12/14/2026
Building Construction Building Construction 1/23/2027
Paving Paving 3/3/2029
Architectural Coating Architectural Coating 3/3/2029
5.2. Off -Road Equipment
5.2.1. Unmitigated
12/13/2026
1/22/2027
3/2/2029
3/30/2029
5/25/2029
5.00
5.00
5.00
5.00
5.00
30.0
30.0
550
20.0
60.0
Phase Name
Equipment Type
Fuel Type
Engine Tier
Number per Day
Hours Per Day
Horsepower
Load Factor
Demolition
Demolition
Demolition
Grading
Grading
Grading
Concrete/Industrial Diesel
Saws
Excavators Diesel
Rubber Tired Dozers Diesel
Excavators Diesel
Graders Diesel
Rubber Tired Dozers Diesel
Average
1.00
Average 3.00
Average 2.00
Average 2.00
Average 1.00
Average 1.00
24/28
8.00
8.00
8.00
8.00
8.00
8.00
33.0
36.0
367
36.0
148
367
0.73
0.38
0.40
0.38
0.41
0.40
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
Grading
Grading
Building Construction
Building Construction
Building Construction
Building Construction
Building Construction
Paving
Paving
Paving
Architectural Coating
Tractors/Loaders/Back
Scrapers
Cranes
Forklifts
Generator Sets
Tractors/Loaders/Back
hoes
Welders
Pavers
Paving Equipment
Rollers
Air Compressors
5.3. Construction Vehicles
5.3.1. Unmitigated
Diesel
Diesel
Diesel
Diesel
Diesel
Diesel
Diesel
Diesel
Diesel
Diesel
Diesel
Average
Average
Average
Average
Average
Average
Average
Average
Average
Average
Average
2.00
2.00
1.00
3.00
1.00
3.00
1.00
2.00
2.00
2.00
1.00
8.00
8.00
7.00
8.00
8.00
7.00
8.00
8.00
8.00
8.00
6.00
84.0
423
367
82.0
14.0
84.0
46.0
81.0
89.0
36.0
37.0
0.37
0.48
0.29
0.20
0.74
0.37
0.45
0.42
0.36
0.38
0.48
Phase Name
Trip Type
One -Way Trips per Day
Miles per Trip
Vehicle Mix
Demolition
Demolition
Demolition
Demolition
Demolition
Grading
Grading
Grading
Grading
Grading
Building Construction
Building Construction
Worker
Vendor
Hauling
Onsite truck
Worker
Vendor
Hauling
Onsite truck
Worker
15.0
111
20.0
0.00
131
18.5
10.2
20.0
18.5
10.2
20.0
18.5
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
HHDT
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
HHDT
LDA,LDT1,LDT2
25 / 28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
Building Construction Vendor 54.0 10.2 HHDT,MHDT
Building Construction Hauling 0.00 20.0 HHDT
Building Construction Onsite truck HHDT
Paving
Paving Worker 15.0 18.5 LDA,LDT1,LDT2
Paving Vendor 10.2 HHDT,MHDT
Paving Hauling 0.00 20.0 HHDT
Paving Onsite truck HHDT
Architectural Coating
Architectural Coating Worker 26.2
Architectural Coating Vendor
Architectural Coating Hauling 0.00
Architectural Coating Onsite truck
5.4. Vehicles
5.4.1. Construction Vehicle Control Strategies
18.5
10.2
20.0
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
HHDT
Control Strategies Applied
PM10 Reduction
PM2.5 Reduction
Water unpaved roads twice daily
Limit vehicle speeds on unpaved roads to 25 mph
Sweep paved roads once per month
5.5. Architectural Coatings
55%
44%
9%
55%
44%
9%
Phase Name
Residential Interior Area
Coated (sq ft)
Residential Exterior Area
Coated (sq ft)
Non -Residential Interior Area
Coated (sq ft)
Non -Residential Exterior Area
Coated (sq ft)
Parking Area Coated (sq ft)
Architectural Coating
5.6. Dust Mitigation
0.00
0.00
494,250
164,750
26 / 28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
5.6.1. Construction Earthmoving Activities
Phase Name
Material Imported (cy)
Material Exported (cy)
Acres Graded (acres)
Material Demolished (Building
Square Footage)
Acres Paved (acres)
Demolition
Grading
Paving
0.00
0.00
0.00
0.00
5.6.2. Construction Earthmoving Control Strategies
0.00
90.0
0.00
288,517
0.00
0.00
0.00
Control Strategies Applied
Frequency (per day)
PM10 Reduction
PM2.5 Reduction
Water Exposed Area
Water Demolished Area
5.7. Construction Paving
3
2
74%
36%
74%
36%
Land Use
Area Paved (acres)
% Asphalt
Hotel
Quality Restaurant
General Office Building
General Office Building
Golf Course
0.00
0.00
0.00
0.00
0.00
5.8. Construction Electricity Consumption and Emissions Factors
kWh per Year and Emission Factor (Ib/MWh)
Year
2027
2028
2026
2029
kWh per Year
0.00
0.00
0.00
0.00
CO2
457
457
457
457
0%
0%
0%
0%
0%
CH4
0.03
0.03
0.03
0.03
N2O
< 0.005
< 0.005
< 0.005
< 0.005
27/28
SilverRock Resort Proposed Project Construction Phase 1 (Planning Areas 1,3,4,5) Custom Report, 7/18/2025
5.18. Vegetation
5.18.1. Land Use Change
5.18.1.1. Unmitigated
Vegetation Land Use Type
Vegetation Soil Type
Initial Acres
Final Acres
5.18.1. Biomass Cover Type
5.18.1.1. Unmitigated
Biomass Cover Type
Initial Acres
Final Acres
5.18.2. Sequestration
5.18.2.1. Unmitigated
Tree Type
Number
Electricity Saved (kWh/year)
Natural Gas Saved (btu/year)
8. User Changes to Default Data
Screen
Justification
Land Use
Construction: Construction Phases
Planning Area 1 includes upgrading the existing golf course.
Planning Area 3 includes 154-unit luxury hotel, with approximately 250,000 SF of total space
and the 7,500 restaurant.
Planning Area 4 includes 17,000 SF golf clubhouse.
Planning Area 5 includes 55,000 SF Banquet Meeting Space.
Assumed an estimate of 10% of land uses landscaped.
Construction estimated to take place from November 2026 to May 2029.
28 / 28
APPENDIX A.2
Proposed Project Construction
(Planning Area 2)
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
SilverRock Resort Proposed Project Construction Phase 1 (Planning
Area 2) Custom Report
Table of Contents
1. Basic Project Information
1.1. Basic Project Information
1.2. Land Use Types
1.3. User -Selected Emission Reduction Measures by Emissions Sector
2. Emissions Summary
2.1. Construction Emissions Compared Against Thresholds
2.2. Construction Emissions by Year, Unmitigated
3. Construction Emissions Details
3.1. Demolition (2027) - Unmitigated
3.3. Grading (2027) - Unmitigated
3.5. Grading (2028) - Unmitigated
3.7. Building Construction (2028) - Unmitigated
3.9. Building Construction (2029) - Unmitigated
3.11. Building Construction (2030) - Unmitigated
1 /43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
3.13. Building Construction (2031) - Unmitigated
3.15. Paving (2028) - Unmitigated
3.17. Paving (2029) - Unmitigated
3.19. Paving (2030) - Unmitigated
3.21. Paving (2031) - Unmitigated
3.23. Architectural Coating (2028) - Unmitigated
3.25. Architectural Coating (2029) - Unmitigated
3.27. Architectural Coating (2030) - Unmitigated
3.29. Architectural Coating (2031) - Unmitigated
4. Operations Emissions Details
4.10. Soil Carbon Accumulation By Vegetation Type
4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated
4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated
4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated
5. Activity Data
5.1. Construction Schedule
5.2. Off -Road Equipment
5.2.1. Unmitigated
2/43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
5.3. Construction Vehicles
5.3.1. Unmitigated
5.4. Vehicles
5.4.1. Construction Vehicle Control Strategies
5.5. Architectural Coatings
5.6. Dust Mitigation
5.6.1. Construction Earthmoving Activities
5.6.2. Construction Earthmoving Control Strategies
5.7. Construction Paving
5.8. Construction Electricity Consumption and Emissions Factors
5.18. Vegetation
5.18.1. Land Use Change
5.18.1.1. Unmitigated
5.18.1. Biomass Cover Type
5.18.1.1. Unmitigated
5.18.2. Sequestration
5.18.2.1. Unmitigated
8. User Changes to Default Data
3/43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
1. Basic Project Information
1.1. Basic Project Information
Data Field
Value
Project Name
Construction Start Date
Lead Agency
Land Use Scale
Analysis Level for Defaults
Windspeed (m/s)
Precipitation (days)
Location
County
City
Air District
Air Basin
TAZ
EDFZ
Electric Utility
Gas Utility
App Version
1.2. Land Use Types
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2)
1 / 1 /2027
Project/site
County
3.00
7.60
33.672095298053605, -116.2796035818008
Riverside -Salton Sea
La Quinta
South Coast AQMD
Salton Sea
5651
19
Imperial Irrigation District
Southern California Gas
2022.1.1.29
Land Use Subtype
Size
Unit
Lot Acreage
Building Area (sq ft)
Landscape Area (sq
ft)
Special Landscape
Area (sq ft)
Population
Description
Single Family
Housing
29.0
Dwelling Unit
9.42
56,550
5,655
94.0
4/43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
1.3. User -Selected Emission Reduction Measures by Emissions Sector
No measures selected
2. Emissions Summary
2.1. Construction Emissions Compared Against Thresholds
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Un/Mit.
Daily,
Summer
(Max)
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N2O
CO2e
Unmit. 2.68 2.32 16.6 26.1 0.04 0.57 0.39 0.96 0.53 0.09 0.62 4,519 4,519 0.17 0.06 1.26 4,542
Daily,
Winter
(Max)
Unmit. 2.77 2.31 22.7 25.2 0.05 0.84 2.79 3.63 0.78 0.94 1.49 5,880 5,880 0.17 0.40 0.13 6,004
Average
Daily
(Max)
Unmit. 1.87 1.62 11.8 18.1 0.03 0.41 0.34 0.75 0.38 0.10 0.48 3,196 3,196 0.12 0.04 0.38 3,212
Annual
(Max)
Unmit. 0.34 0.30 2.14 3.31 0.01 0.07 0.06 0.14 0.07 0.02 0.09 529 529 0.02 0.01 0.06 532
Exceeds
(Daily
Max)
Threshol
d
Unmit.
Exceeds
(Average
Daily)
75.0
100
550
150
150
55.0
No No No No No No
5/43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Threshol - 75.0 100 550 150
d
Unmit. No No No No
150 55.0
No
No
2.2. Construction Emissions by Year, Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Year
Daily -
Summer
(Max)
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM 10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N2O
CO2e
2028 2.68 2.32 16.6 26.1 0.04 0.57 0.39 0.96 0.53 0.09 0.62 4,519 4,519 0.17 0.06 1.26 4,542
2029 2.61 2.27 16.0 25.9 0.04 0.53 0.39 0.92 0.49 0.09 0.58 4,508 4,508 0.17 0.06 1.13 4,531
2030 2.53 2.19 15.6 25.8 0.04 0.49 0.39 0.88 0.45 0.09 0.55 4,499 4,499 0.17 0.06 1.01 4,522
2031 2.48 2.15 15.2 25.6 0.04 0.46 0.39 0.85 0.43 0.09 0.52 4,491 4,491 0.17 0.06 0.91 4,513
Daily -
Winter
(Max)
2027 2.77 2.31 22.7 19.9 0.05 0.84 2.79 3.63 0.78 0.94 1.49 5,880 5,880 0.16 0.40 0.13 6,004
2028 2.65 2.30 16.6 25.2 0.04 0.57 2.04 2.61 0.53 0.94 1.46 4,462 4,462 0.17 0.06 0.03 4,484
2029 2.59 2.24 16.0 25.1 0.04 0.53 0.39 0.92 0.49 0.09 0.58 4,453 4,453 0.17 0.06 0.03 4,474
2030 2.52 2.18 15.6 25.0 0.04 0.49 0.39 0.88 0.45 0.09 0.55 4,445 4,445 0.17 0.06 0.03 4,466
2031 2.46 2.13 15.2 24.8 0.04 0.46 0.39 0.85 0.43 0.09 0.52 4,437 4,437 0.17 0.06 0.02 4,459
Average
Daily
2027 0.31 0.26 2.45 2.40 0.01 0.09 0.31
2028 1.87 1.62 11.8 18.0 0.03 0.41 0.34
2029 1.85 1.61 11.4 18.1 0.03 0.38 0.27
2030 1.80 1.56 11.2 18.0 0.03 0.35 0.27
2031 0.56 0.48 3.42 5.65 0.01 0.10 0.09
Annual
0.41 0.09 0.08
0.75 0.38 0.10
0.65 0.35 0.07
0.63 0.32 0.07
0.19 0.10 0.02
0.17 614 614 0.02 0.03 0.19 625
0.48 3,157 3,157 0.12 0.04 0.38 3,173
0.41 3,196 3,196 0.12 0.04 0.35 3,212
0.39 3,190 3,190 0.12 0.04 0.31 3,206
0.12 1,003 1,003 0.04 0.01 0.09 1,008
6/43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
2027 0.06 0.05 0.45 0.44 < 0.005 0.02 0.06 0.07 0.02 0.01 0.03 102 102 < 0.005 0.01 0.03 103
2028 0.34 0.30 2.14 3.28 0.01 0.07 0.06 0.14 0.07 0.02 0.09 523 523 0.02 0.01 0.06 525
2029 0.34 0.29 2.09 3.31 0.01 0.07 0.05 0.12 0.06 0.01 0.08 529 529 0.02 0.01 0.06 532
2030 0.33 0.28 2.04 3.29 0.01 0.06 0.05 0.11 0.06 0.01 0.07 528 528 0.02 0.01 0.05 531
2031 0.10 0.09 0.62 1.03 < 0.005 0.02 0.02 0.03 0.02 < 0.005 0.02 166 166 0.01 < 0.005 0.01 167
3. Construction Emissions Details
3.1. Demolition (2027) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
Daily,
Summer
(Max)
Daily,
Winter
(Max)
Off-Roa
d
Equipm
ent
Demoliti
on
Onsite
truck
Average
Daily
Off-Roa
d
Equipm
ent
TOG
2.64
0.00
0.22
ROG
2.21
0.00
0.18
NOx
19.9
0.00
1.64
CO
18.6
0.00
1.53
SO2
0.03
0.00
< 0.005
PM10E
0.80
0.00
0.07
PM10D
1.96
0.00
PM10T
0.80
1.96
0.00
0.07
PM2.5E
0.73
0.00
0.06
PM2.5D
0.30
0.00
PM2.5T
0.73
0.30
0.00
0.06
BCO2
NBCO2
3,427
0.00
282
CO2T
3,427
0.00
282
CH4
0.14
0.00
0.01
N20
0.03
0.00
< 0.005
0.00
CO2e
3,439
0.00
283
7/43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Demoliti - 0.16 0.16 0.02 0.02
on
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.04 0.03 0.30 0.28 < 0.005 0.01
d
Equipm
ent
0.01 0.01 0.01
Demoliti 0.03 0.03 < 0.005 < 0.005 -
on
0.00 0.00 0.00 0.00 0.00 0.00
46.6 46.6 < 0.005 < 0.005 - 46.8
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily,
Summer
(Max)
Daily,
Winter
(Max)
Worker 0.06 0.05 0.07 0.70 0.00 0.00 0.20 0.20 0.00 0.05 0.05 182 182 < 0.005 0.01 0.02 184
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.07 0.04 2.70 0.61 0.02 0.05 0.63 0.68 0.05 0.18 0.22 2,271 2,271 0.02 0.37 0.12 2,381
Average
Daily
Worker 0.01 < 0.005 0.01 0.07 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 - 16.0 16.0 < 0.005 < 0.005 0.02 16.2
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.01 < 0.005 0.22 0.05 < 0.005 < 0.005 0.05 0.06 < 0.005 0.01 0.02 187 187 < 0.005 0.03 0.16 196
Annual
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 - 2.65 2.65 < 0.005 < 0.005 < 0.005 2.68
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling < 0.005 < 0.005 0.04 0.01 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 - 30.9 30.9 < 0.005 < 0.005 0.03 32.4
8/43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
3.3. Grading (2027) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM 10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Onsite
Daily, -
Summer
(Max)
Daily, -
Winter
(Max)
Off-Roa 1.89 1.59 14.2 17.3 0.03 0.60
d
Equipm
ent
Dust
From
Material
Movement
0.60 0.55 0.55
1.84 1.84 0.89 0.89
2,960 2,960 0.12 0.02 2,970
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.08 0.07 0.58 0.71 < 0.005 0.02
d
Equipm
ent
0.02 0.02 0.02 122 122 < 0.005 < 0.005 - 122
Dust 0.08 0.08 0.04 0.04
From
Material
Movement
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
9/43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Off-Roa 0.01 0.01 0.11 0.13 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 20.1 20.1 < 0.005 < 0.005 - 20.2
d
Equipm
ent
Dust 0.01 0.01 0.01 0.01
From
Material
Movement
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Daily, -
Winter
(Max)
Worker 0.06 0.05 0.07 0.70 0.00 0.00 0.20 0.20 0.00 0.05 0.05 182 182 < 0.005 0.01 0.02 184
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker < 0.005 < 0.005 < 0.005 0.04 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 - 7.99 7.99 < 0.005 < 0.005 0.01 8.10
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 - 1.32 1.32 < 0.005 < 0.005 < 0.005 1.34
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.5. Grading (2028) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
10/43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N2O
CO2e
Onsite
Daily, -
Summer
(Max)
Daily, -
Winter
(Max)
Off-Roa 1.86 1.56 13.8 17.3 0.03 0.57
d
Equipm
ent
Dust
From
Material
Movement
0.57 0.52 0.52
1.84 1.84 0.89 0.89
2,961 2,961 0.12 0.02 2,971
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
0ff-Roa 0.08 0.06 0.57 0.71 < 0.005 0.02 0.02 0.02 0.02 122 122 < 0.005 < 0.005 - 122
d
Equipm
ent
Dust 0.08 0.08 0.04 0.04
From
Material
Movement
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.01 0.01 0.10 0.13 < 0.005 < 0.005 -
d
Equipm
ent
< 0.005 < 0.005 - < 0.005 -
20.1 20.1 < 0.005 < 0.005 - 20.2
11 / 43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Dust
From
Material
Movement
Onsite
truck
Offsite
Daily,
Summer
(Max)
Daily,
Winter
(Max)
0.00
0.00
0.00
0.00
0.00
0.00
0.01
0.00
0.01
0.00
0.00
0.01
0.00
0.01
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Worker 0.05 0.05 0.06 0.65 0.00 0.00 0.20 0.20 0.00 0.05 0.05 179 179 < 0.005 0.01 0.01 181
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker < 0.005 < 0.005 < 0.005 0.03 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 - 7.85 7.85 < 0.005 < 0.005 0.01 7.94
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 - 1.30 1.30 < 0.005 < 0.005 < 0.005 1.32
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.7. Building Construction (2028) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM 10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
12/43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Daily,
Summer
(Max)
Off-Roa 1.18 0.99 8.92 12.9 0.02 0.30 0.30 0.28 0.28 2,397 2,397 0.10 0.02 2,406
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 1.18 0.99 8.92 12.9 0.02 0.30 0.30 0.28 0.28 2,397 2,397 0.10 0.02 2,406
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.80 0.67 6.03 8.73 0.02 0.20 0.20 0.19 0.19 1,619 1,619 0.07 0.01 1,624
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.15 0.12 1.10 1.59 < 0.005 0.04 0.04 0.03 0.03 268 268 0.01 < 0.005 - 269
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily,
Summer
(Max)
13/43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Worker 0.05 0.04 0.04 0.80 0.00 0.00 0.14 0.14 0.00 0.03 0.03 146 146 < 0.005 < 0.005 0.39 148
Vendor < 0.005 < 0.005 0.09 0.04 < 0.005 < 0.005 0.03 0.03 < 0.005 0.01 0.01 91.9 91.9 < 0.005 0.01 0.22 95.9
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.04 0.04 0.04 0.45 0.00 0.00 0.14 0.14 0.00 0.03 0.03 124 124 < 0.005 < 0.005 0.01 126
Vendor < 0.005 < 0.005 0.10 0.04 < 0.005 < 0.005 0.03 0.03 < 0.005 0.01 0.01 92.0 92.0 < 0.005 0.01 0.01 95.8
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.03 0.03 0.03 0.38 0.00 0.00 0.09 0.09 0.00 0.02 0.02 89.7 89.7 < 0.005 < 0.005 0.12 90.8
Vendor < 0.005 < 0.005 0.06 0.03 < 0.005 < 0.005 0.02 0.02 < 0.005 < 0.005 0.01 62.1 62.1 < 0.005 0.01 0.06 64.7
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.07 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 14.9 14.9 < 0.005 < 0.005 0.02 15.0
Vendor < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 10.3 10.3 < 0.005 < 0.005 0.01 10.7
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.9. Building Construction (2029) - Unmitigated
Criteria Pollutants (Ib/day for daily, ton/yr for annual) and GHGs (Ib/day for daily, MT/yr for annual)
Location
Onsite
Daily,
Summer
(Max)
Off-Roa
d
Equipm
ent
TOG
1.15
ROG
0.97
NOx
8.58
CO
12.9
SO2
0.02
PM10E
0.28
PM10D
PM10T
0.28
PM2.5E
0.25
PM2.5D
PM2.5T
0.25
BCO2
NBCO2
2,397
CO2T
2,397
CH4
0.10
N20
0.02
CO2e
2,405
14/43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 1.15 0.97 8.58 12.9 0.02 0.28 0.28 0.25 0.25 2,397 2,397 0.10 0.02 2,405
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.82 0.69 6.13 9.22 0.02 0.20 0.20 0.18 0.18 1,712 1,712 0.07 0.01 1,718
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.15 0.13 1.12 1.68 < 0.005 0.04 0.04 0.03 0.03 283 283 0.01 < 0.005 - 284
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.04 0.04 0.04 0.75 0.00 0.00 0.14 0.14 0.00 0.03 0.03 143 143 < 0.005 < 0.005 0.35 145
Vendor < 0.005 < 0.005 0.09 0.04 < 0.005 < 0.005 0.03 0.03 < 0.005 0.01 0.01 89.5 89.5 < 0.005 0.01 0.20 93.2
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
15/43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Worker 0.03 0.03 0.04 0.43 0.00 0.00 0.14 0.14 0.00 0.03 0.03 122 122 < 0.005 < 0.005 0.01 124
Vendor < 0.005 < 0.005 0.09 0.04 < 0.005 < 0.005 0.03 0.03 < 0.005 0.01 0.01 89.6 89.6 < 0.005 0.01 0.01 93.2
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.03 0.03 0.03 0.38 0.00 0.00 0.10 0.10 0.00 0.02 0.02 93.2 93.2 < 0.005 < 0.005 0.11 94.4
Vendor < 0.005 < 0.005 0.07 0.03 < 0.005 < 0.005 0.02 0.02 < 0.005 0.01 0.01 64.0 64.0 < 0.005 0.01 0.06 66.6
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.07 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 15.4 15.4 < 0.005 < 0.005 0.02 15.6
Vendor < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 10.6 10.6 < 0.005 < 0.005 0.01 11.0
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.11. Building Construction (2030) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
Daily,
Summer
(Max)
TOG
ROG
NOx
CO
SO2
PM10E
Off-Roa 1.12 0.94 8.39 12.9 0.02 0.26
d
Equipm
ent
PM10D
PM1OT
PM2.5E
PM2.5D
PM2.5T
0.26 0.24 0.24
BCO2
NBCO2
CO2T
CH4
N20
CO2e
2,397 2,397 0.10 0.02 2,405
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
16/43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Off-Roa 1.12 0.94 8.39 12.9 0.02 0.26 0.26 0.24 0.24 2,397 2,397 0.10 0.02 2,405
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.80 0.67 5.99 9.20 0.02 0.19 0.19 0.17 0.17 1,712 1,712 0.07 0.01 1,718
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.15 0.12 1.09 1.68 < 0.005 0.03 0.03 0.03 0.03 283 283 0.01 < 0.005 - 284
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily,
Summer
(Max)
Worker 0.04 0.03 0.03 0.70 0.00 0.00 0.14 0.14 0.00 0.03 0.03 141 141 < 0.005 < 0.005 0.32 143
Vendor < 0.005 < 0.005 0.08 0.04 < 0.005 < 0.005 0.03 0.03 < 0.005 0.01 0.01 87.0 87.0 < 0.005 0.01 0.18 90.7
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.03 0.03 0.04 0.40 0.00 0.00 0.14 0.14 0.00 0.03 0.03 120 120 < 0.005 < 0.005 0.01 122
Vendor < 0.005 < 0.005 0.09 0.04 < 0.005 < 0.005 0.03 0.03 < 0.005 0.01 0.01 87.1 87.1 < 0.005 0.01 < 0.005 90.6
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
17/43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Average
Daily
Worker 0.02 0.02 0.03 0.35 0.00 0.00 0.10 0.10 0.00 0.02 0.02 91.7 91.7 < 0.005 < 0.005 0.10 92.8
Vendor < 0.005 < 0.005 0.06 0.03 < 0.005 < 0.005 0.02 0.02 < 0.005 0.01 0.01 62.2 62.2 < 0.005 0.01 0.06 64.7
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.06 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 15.2 15.2 < 0.005 < 0.005 0.02 15.4
Vendor < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 10.3 10.3 < 0.005 < 0.005 0.01 10.7
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.13. Building Construction (2031) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
Daily,
Summer
(Max)
Off-Roa
d
Equipm
ent
Onsite
truck
Daily,
Winter
(Max)
Off-Roa
d
Equipm
ent
Onsite
truck
TOG
1.10
0.00
1.10
0.00
ROG
0.92
0.00
0.92
0.00
NOx
8.12
0.00
8.12
0.00
CO
12.8
0.00
12.8
0.00
SO2
0.02
0.00
0.02
0.00
PM10E
0.24
0.00
0.24
0.00
PM10D
0.00
0.00
PM10T
0.24
0.00
0.24
0.00
PM2.5E
0.22
0.00
0.22
0.00
PM2.5D
0.00
0.00
PM2.5T
0.22
0.00
0.22
0.00
BCO2
NBCO2
2,397
0.00
2,397
0.00
CO2T
2,397
0.00
2,397
0.00
CH4
0.10
0.00
0.10
0.00
N20
0.02
0.00
0.02
0.00
0.00
0.00
CO2e
2,405
0.00
2,405
0.00
18/43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Average
Daily
Off-Roa 0.25 0.21 1.83 2.89 0.01 0.05 0.05 0.05 0.05 539 539 0.02 < 0.005 - 541
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.05 0.04 0.33 0.53 < 0.005 0.01 0.01 0.01 0.01 89.3 89.3 < 0.005 < 0.005 - 89.6
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.04 0.03 0.03 0.66 0.00 0.00 0.14 0.14 0.00 0.03 0.03 139 139 < 0.005 < 0.005 0.28 140
Vendor < 0.005 < 0.005 0.08 0.03 < 0.005 < 0.005 0.03 0.03 < 0.005 0.01 0.01 84.4 84.4 < 0.005 0.01 0.16 88.1
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.03 0.03 0.03 0.37 0.00 0.00 0.14 0.14 0.00 0.03 0.03 118 118 < 0.005 < 0.005 0.01 120
Vendor < 0.005 < 0.005 0.09 0.04 < 0.005 < 0.005 0.03 0.03 < 0.005 0.01 0.01 84.5 84.5 < 0.005 0.01 < 0.005 88.1
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.01 0.01 0.01 0.10 0.00 0.00 0.03 0.03 0.00 0.01 0.01 - 28.4 28.4 < 0.005 < 0.005 0.03 28.8
Vendor < 0.005 < 0.005 0.02 0.01 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 - 19.0 19.0 < 0.005 < 0.005 0.02 19.8
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Annual
19/43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Worker < 0.005 < 0.005 < 0.005 0.02 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 - 4.71 4.71 < 0.005 < 0.005 < 0.005 4.77
Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 - 3.15 3.15 < 0.005 < 0.005 < 0.005 3.28
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
3.15. Paving (2028) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
Onsite
Daily,
Summer
(Max)
Off-Roa
d
Equipm
ent
0.82
ROG
NOx
CO
SO2
0.69
Paving 0.00 0.00
Onsite
truck
Daily,
Winter
(Max)
Off-Roa
d
Equipm
ent
0.00
0.82
0.00
0.69
Paving 0.00 0.00
Onsite
truck
Average
Daily
Off-Roa
d
Equipm
ent
0.00
0.55
0.00
0.46
6.63
0.00
6.63
0.00
4.47
9.91
0.00
9.91
0.00
6.69
0.01
0.00
0.01
0.00
0.01
PM10E
PM10D
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
0.26
0.00
0.26
0.00
0.17
0.00
0.00
0.26
0.00
0.26
0.00
0.17
0.24
0.00
0.24
0.00
0.16
0.00
0.00
0.24
0.00
0.24
0.00
0.16
NBCO2
CO2T
CH4
N20
1,511
0.00
1,511
0.00
1,020
1,511
0.00
1,511
0.00
1,020
0.06
0.00
0.06
0.00
0.04
0.01
0.00
0.01
0.00
0.01
CO2e
0.00
0.00
1,516
0.00
1,516
0.00
1,024
20 / 43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.10 0.08 0.82 1.22 < 0.005 0.03
d
Equipm
ent
Paving 0.00 0.00
0.03 0.03 0.03 169 169 0.01 < 0.005 - 169
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.07 0.06 0.06 1.16 0.00 0.00 0.20 0.20 0.00 0.05 0.05 210 210 < 0.005 0.01 0.57 212
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.05 0.05 0.06 0.65 0.00 0.00 0.20 0.20 0.00 0.05 0.05 179 179 < 0.005 0.01 0.01 181
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.04 0.04 0.04 0.55 0.00 0.00 0.13 0.13 0.00 0.03 0.03 129 129 < 0.005 < 0.005 0.17 131
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.01 0.01 0.01 0.10 0.00 0.00 0.02 0.02 0.00 0.01 0.01 21.3 21.3 < 0.005 < 0.005 0.03 21.6
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
21 /43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.17. Paving (2029) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
Onsite
Daily,
Summer
(Max)
Off-Roa
d
Equipm
ent
0.80
ROG
NOx
CO
SO2
0.67
Paving 0.00 0.00
Onsite
truck
Daily,
Winter
(Max)
Off-Roa
d
Equipm
ent
0.00
0.80
0.00
0.67
Paving 0.00 0.00
Onsite
truck
Average
Daily
Off-Roa
d
Equipm
ent
0.00
0.57
0.00
0.48
Paving 0.00 0.00
6.46
0.00
6.46
0.00
4.61
9.92
0.00
9.92
0.00
7.08
0.01
0.00
0.01
0.00
0.01
PM10E
PM10D
PM1OT
0.24
0.00
0.24
0.00
0.17
0.00
0.00
0.24
0.00
0.24
0.00
0.17
PM2.5E
0.22
0.00
0.22
0.00
0.16
PM2.5D
PM2.5T
BCO2
0.00
0.00
0.22
0.00
0.22
0.00
0.16
NBCO2
CO2T
CH4
N20
1,511
0.00
1,511
0.00
1,079
1,511
0.00
1,511
0.00
1,079
0.06
0.00
0.06
0.00
0.04
0.01
0.00
0.01
0.00
0.01
CO2e
0.00
0.00
1,516
0.00
1,516
0.00
1,083
22 / 43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.10 0.09 0.84 1.29 < 0.005 0.03 0.03 0.03 0.03 179 179 0.01 < 0.005 - 179
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily,
Summer
(Max)
Worker 0.06 0.06 0.05 1.08 0.00 0.00 0.20 0.20 0.00 0.05 0.05 206 206 < 0.005 0.01 0.51 209
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.05 0.04 0.06 0.61 0.00 0.00 0.20 0.20 0.00 0.05 0.05 176 176 < 0.005 0.01 0.01 178
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.04 0.04 0.04 0.54 0.00 0.00 0.14 0.14 0.00 0.03 0.03 134 134 < 0.005 0.01 0.16 136
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.01 0.01 0.01 0.10 0.00 0.00 0.03 0.03 0.00 0.01 0.01 22.2 22.2 < 0.005 < 0.005 0.03 22.5
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
23 / 43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
3.19. Paving (2030) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
Onsite
Daily,
Summer
(Max)
Off-Roa
d
Equipm
ent
Paving
Onsite
truck
Daily,
Winter
(Max)
Off-Roa
d
Equipm
ent
Paving
Onsite
truck
Average
Daily
Off-Roa
d
Equipm
ent
Paving
Onsite
truck
0.77
0.00
0.00
0.77
0.00
0.00
0.55
0.00
0.00
ROG
NOx
CO
SO2
PM10E
PM10D
PM 10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
0.64
0.00
0.00
0.64
0.00
0.00
0.46
0.00
0.00
6.28 9.90
0.00 0.00
6.28 9.90
0.00 0.00
4.49 7.07
0.00 0.00
0.01
0.00
0.01
0.00
0.01
0.00
0.22
0.00
0.22
0.00
0.16
0.00
0.00
0.00
0.00
0.22
0.00
0.22
0.00
0.16
0.00
0.20
0.00
0.20
0.00
0.14
0.00
0.00
0.00
0.00
0.20
0.00
0.20
0.00
0.14
0.00
1,511
0.00
1,511
0.00
1,079
0.00
1,511 0.06
0.00 0.00
1,511 0.06
0.00 0.00
1,079 0.04
0.00 0.00
0.01
0.00
0.01
0.00
0.01
0.00
CO2e
0.00
0.00
0.00
1,516
0.00
1,516
0.00
1,083
0.00
Annual -
24/43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Off-Roa 0.10 0.08 0.82 1.29 < 0.005 0.03
Equipment
Paving 0.00 0.00
0.03 0.03 0.03
179 179 0.01 < 0.005 - 179
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.06 0.05 0.05 1.01 0.00 0.00 0.20 0.20 0.00 0.05 0.05 202 202 < 0.005 0.01 0.45 205
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.05 0.04 0.05 0.57 0.00 0.00 0.20 0.20 0.00 0.05 0.05 173 173 < 0.005 0.01 0.01 175
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.04 0.03 0.04 0.51 0.00 0.00 0.14 0.14 0.00 0.03 0.03 132 132 < 0.005 0.01 0.14 133
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.01 0.01 0.01 0.09 0.00 0.00 0.03 0.03 0.00 0.01 0.01 21.8 21.8 < 0.005 < 0.005 0.02 22.1
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.21. Paving (2031) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM1OD
PM1OT
PM2.5E
25 / 43
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Onsite
Daily, -
Summer
(Max)
Off-Roa 0.75 0.63 6.13 9.88 0.01 0.21 0.21 0.19 0.19 1,511 1,511 0.06 0.01 1,516
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.75 0.63 6.13 9.88 0.01 0.21 0.21 0.19 0.19 1,511 1,511 0.06 0.01 1,516
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.17 0.14 1.38 2.22 < 0.005 0.05 0.05 0.04 0.04 340 340 0.01 < 0.005 - 341
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.03 0.03 0.25 0.41 < 0.005 0.01 0.01 0.01 0.01 56.3 56.3 < 0.005 < 0.005 - 56.5
d
Equipm
ent
Paving 0.00 0.00
26 / 43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.05 0.05 0.04 0.94 0.00 0.00 0.20 0.20 0.00 0.05 0.05 199 199 < 0.005 0.01 0.41 202
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.05 0.04 0.04 0.53 0.00 0.00 0.20 0.20 0.00 0.05 0.05 170 170 < 0.005 0.01 0.01 172
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.01 0.01 0.01 0.15 0.00 0.00 0.04 0.04 0.00 0.01 0.01 40.8 40.8 < 0.005 < 0.005 0.04 41.4
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.03 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 - 6.76 6.76 < 0.005 < 0.005 0.01 6.85
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.23. Architectural Coating (2028) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM 1 OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
27/43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Daily,
Summer
(Max)
Off-Roa 0.13 0.11 0.81 1.12 < 0.005 0.02 0.02 0.01 0.01 134 134 0.01 < 0.005 - 134
d
Equipm
ent
Architect 0.42 0.42
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.13 0.11 0.81 1.12 < 0.005 0.02 0.02 0.01 0.01 134 134 0.01 < 0.005 - 134
d
Equipm
ent
Architect 0.42 0.42
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average -
Daily
Off-Roa 0.09 0.07 0.55 0.76 < 0.005 0.01 0.01 0.01 0.01 90.1 90.1 < 0.005 < 0.005 - 90.5
d
Equipm
ent
Architect 0.28 0.28
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
28 / 43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Annual
Off-Roa 0.02 0.01 0.10 0.14 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 14.9 14.9 < 0.005 < 0.005 - 15.0
d
Equipm
ent
Architect 0.05 0.05
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily,
Summer
(Max)
Worker 0.01 0.01 0.01 0.16 0.00 0.00 0.03 0.03 0.00 0.01 0.01 29.2 29.2 < 0.005 < 0.005 0.08 29.6
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.01 0.01 0.01 0.09 0.00 0.00 0.03 0.03 0.00 0.01 0.01 24.9 24.9 < 0.005 < 0.005 < 0.005 25.2
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.01 0.01 0.01 0.08 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 - 17.9 17.9 < 0.005 < 0.005 0.02 18.2
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 2.97 2.97 < 0.005 < 0.005 < 0.005 3.01
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
29 / 43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
3.25. Architectural Coating (2029) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
Onsite
Daily,
Summer
(Max)
Off-Roa
d
Equipm
ent
Architect
ural
Coating
s
Onsite
truck
Daily,
Winter
(Max)
Off-Roa
d
Equipm
ent
Architect
ural
Coating
s
Onsite
truck
Average
Daily
Off-Roa
d
Equipm
ent
0.12
0.42
0.00
0.12
0.42
0.00
0.09
ROG
NOx
CO
SO2
PM10E
PM10D
PM 10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
0.10
0.42
0.00
0.10
0.42
0.00
0.07
0.79
0.00
0.79
0.00
0.57
0.00
0.00
0.79
< 0.005
0.00
< 0.005
0.00
< 0.005
0.01
0.00
0.01
0.00
0.01
0.00
0.00
0.01
0.00
0.01
0.00
0.01
0.01
0.00
0.01
0.00
0.01
0.00
0.00
0.01
0.00
0.01
0.00
0.01
134
0.00
134
0.00
95.4
134
0.00
134
0.00
95.4
0.01
0.00
0.01
0.00
< 0.005
< 0.005
0.00
< 0.005
0.00
< 0.005
CO2e
0.00
0.00
134
0.00
134
0.00
95.7
30 / 43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Architect 0.30 0.30
Coatings
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual -
Off-Roa 0.02 0.01 0.10 0.14 < 0.005 < 0.005 -
d
Equipm
ent
Architect 0.05
ural
Coating
s
0.05
< 0.005 < 0.005 - < 0.005 -
15.8 15.8 < 0.005 < 0.005 - 15.8
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.01 0.01 0.01 0.15 0.00 0.00 0.03 0.03 0.00 0.01 0.01 28.7 28.7 < 0.005 < 0.005 0.07 29.0
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.01 0.01 0.01 0.09 0.00 0.00 0.03 0.03 0.00 0.01 0.01 24.4 24.4 < 0.005 < 0.005 < 0.005 24.7
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average -
Daily
Worker 0.01 0.01 0.01 0.08 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 - 18.6 18.6 < 0.005 < 0.005 0.02 18.9
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual -
31 /43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 - 3.09 3.09 < 0.005 < 0.005 < 0.005 3.13
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.27. Architectural Coating (2030) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Onsite
Daily,
Summer
(Max)
Off-Roa 0.12 0.10 0.78 1.11 < 0.005 0.01
d
Equipm
ent
Architect 0.42 0.42
ural
Coating
s
0.01 0.01 0.01
134 134 0.01 < 0.005 - 134
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.12 0.10 0.78 1.11 < 0.005 0.01
d
Equipm
ent
Architect 0.42
ural
Coating
s
0.42
0.01 0.01 0.01
134 134 0.01 < 0.005 - 134
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
32 / 43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Average
Daily
Off-Roa 0.09 0.07 0.56 0.79 < 0.005 0.01 0.01 0.01 0.01 95.4 95.4 < 0.005 < 0.005 - 95.7
d
Equipm
ent
Architect 0.30 0.30
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual -
Off-Roa 0.02 0.01 0.10 0.14 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 15.8 15.8 < 0.005 < 0.005 - 15.8
d
Equipm
ent
Architect 0.05 0.05
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.01 0.01 0.01 0.14 0.00 0.00 0.03 0.03 0.00 0.01 0.01 28.2 28.2 < 0.005 < 0.005 0.06 28.5
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.01 0.01 0.01 0.08 0.00 0.00 0.03 0.03 0.00 0.01 0.01 24.0 24.0 < 0.005 < 0.005 < 0.005 24.3
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
33 / 43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker < 0.005 < 0.005 0.01 0.07 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 - 18.3 18.3 < 0.005 < 0.005 0.02 18.6
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 - 3.03 3.03 < 0.005 < 0.005 < 0.005 3.07
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.29. Architectural Coating (2031) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Onsite
Daily,
Summer
(Max)
Off-Roa 0.12 0.10 0.78 1.10 < 0.005 0.01
d
Equipm
ent
Architect 0.42 0.42
ural
Coating
s
0.01 0.01 - 0.01 - 134 134 0.01 < 0.005 - 134
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
34/43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Off-Roa 0.12 0.10 0.78 1.10 < 0.005 0.01
d
Equipm
Architect 0.42 0.42
ural
Coating
s
0.01 0.01 0.01
134 134 0.01 < 0.005 - 134
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average -
Daily
Off-Roa 0.03 0.02 0.17 0.25 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 30.0 30.0 < 0.005 < 0.005 - 30.2
d
Equipm
ent
Architect 0.09
ural
Coating
s
0.09
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa < 0.005 < 0.005 0.03 0.05 < 0.005 < 0.005 -
d
Equipm
ent
Architect 0.02 0.02
ural
Coating
s
< 0.005 < 0.005 - < 0.005 -
4.97 4.97 < 0.005 < 0.005 - 4.99
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily,
Summer
(Max)
Worker 0.01 0.01 0.01 0.13 0.00 0.00 0.03 0.03 0.00 0.01 0.01 27.7 27.7 < 0.005 < 0.005 0.06 28.1
35 / 43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.01 0.01 0.01 0.07 0.00 0.00 0.03 0.03 0.00 0.01 0.01 23.7 23.7 < 0.005 < 0.005 < 0.005 24.0
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average -
Daily
Worker < 0.005 < 0.005 < 0.005 0.02 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 - 5.68 5.68 < 0.005 < 0.005 0.01 5.76
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 - 0.94 0.94 < 0.005 < 0.005 < 0.005 0.95
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
4. Operations Emissions Details
4.10. Soil Carbon Accumulation By Vegetation Type
4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Vegetati
on
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Daily, -
Summer
(Max)
Total -
36 / 43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Daily,
Winter
(Max)
Total
Annual
Total
4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Land
Use
Daily,
Summer
(Max)
Total
Daily,
Winter
(Max)
Total
Annual
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N2O
CO2e
— — — — — — — — — — — — — —
Total
4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Species
Daily,
Summer
(Max)
Avoided
Subtotal
Sequest
ered
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N2O
CO2e
37/43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Subtotal
Remove
d
Subtotal
Daily,
Winter
(Max)
Avoided
Subtotal
Sequest
ered
Subtotal
Remove
d
Subtotal
Annual
Avoided
Subtotal
Sequest
ered
Subtotal
Remove —
d
Subtotal
5. Activity Data
38 / 43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
5.1. Construction Schedule
Phase Name
Phase Type
Start Date
End Date
Days Per Week
Work Days per Phase
Phase Description
Demolition
Grading
Building Construction
Paving
Architectural Coating
Demolition
Grading
Building Construction
Paving
Architectural Coating
5.2. Off -Road Equipment
5.2.1. Unmitigated
11 /1 /2027
12/11/2027
1/22/2028
1/22/2028
1/22/2028
12/10/2027
1 /21 /2028
4/25/2031
4/25/2031
4/25/2031
5.00
5.00
5.00
5.00
5.00
30.0
30.0
850
850
850
Phase Name
Equipment Type
Fuel Type
Engine Tier
Number per Day
Hours Per Day
Horsepower
Load Factor
Demolition
Demolition
Demolition
Grading
Grading
Grading
Grading
Building Construction
Building Construction
Building Construction
Building Construction
Building Construction
Paving
Paving
Concrete/Industrial
Saws
Excavators
Rubber Tired
Excavators
Graders
Rubber Tired
Diesel
Diesel
Dozers Diesel
Diesel
Diesel
Dozers Diesel
Tractors/Loaders/Back Diesel
hoes
Cranes
Forklifts
Generator Sets
Tractors/Loaders/Back
hoes
Welders
Pavers
Paving Equipment
Diesel
Diesel
Diesel
Diesel
Diesel
Diesel
Diesel
Average
Average
Average
Average
Average
Average
Average
Average
Average
Average
Average
Average
Average
Average
1.00
3.00
2.00
1.00
1.00
1.00
3.00
1.00
3.00
1.00
3.00
1.00
2.00
2.00
8.00
8.00
8.00
8.00
8.00
8.00
8.00
7.00
8.00
8.00
7.00
8.00
8.00
8.00
33.0
36.0
367
36.0
148
367
84.0
367
82.0
14.0
84.0
46.0
81.0
89.0
0.73
0.38
0.40
0.38
0.41
0.40
0.37
0.29
0.20
0.74
0.37
0.45
0.42
0.36
39 / 43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Paving Rollers Diesel Average 2.00 8.00 36.0 0.38
Architectural Coating Air Compressors Diesel
5.3. Construction Vehicles
5.3.1. Unmitigated
Average
1.00 6.00
37.0 0.48
Phase Name
Trip Type
One -Way Trips per Day
Miles per Trip
Vehicle Mix
Grading
Grading
Grading
Grading
Grading
Building Construction
Building Construction
Building Construction
Building Construction
Building Construction
Paving
Paving
Paving
Paving
Paving
Architectural Coating
Architectural Coating
Architectural Coating
Architectural Coating
Architectural Coating
Demolition
Worker
Vendor
Hauling
Onsite truck
15.0
0.00
18.5
10.2
20.0
Worker 10.4 18.5
Vendor 3.10 10.2
Hauling 0.00 20.0
Onsite truck
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
HHDT
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
HHDT
Worker 15.0 18.5 LDA,LDT1,LDT2
Vendor 10.2 HHDT,MHDT
Hauling 0.00 20.0 HHDT
Onsite truck HHDT
Worker 2.09 18.5 LDA,LDT1,LDT2
Vendor 10.2 HHDT,MHDT
Hauling 0.00 20.0 HHDT
Onsite truck HHDT
40/43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Demolition
Demolition
Demolition
Demolition
Worker
Vendor
15.0 18.5
10.2
Hauling 34.9
Onsite truck
20.0
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
HHDT
5.4. Vehicles
5.4.1. Construction Vehicle Control Strategies
Control Strategies Applied
Water unpaved roads twice daily
Limit vehicle speeds on unpaved roads to 25 mph
Sweep paved roads once per month
PM10 Reduction
55%
44%
9%
PM2.5 Reduction
55%
44%
9%
5.5. Architectural Coatings
Phase Name
Architectural Coating
5.6. Dust Mitigation
Residential Interior Area
Coated (sq ft)
114,514
5.6.1. Construction Earthmoving Activities
Phase Name
Demolition
Grading
Paving
Material Imported (cy)
0.00
0.00
Residential Exterior Area
Coated (sq ft)
38,171
Material Exported (cy)
0.00
0.00
5.6.2. Construction Earthmoving Control Strategies
Non -Residential Interior Area
Coated (sq ft)
0.00
Acres Graded (acres)
0.00
30.0
0.00
Non -Residential Exterior Area
Coated (sq ft)
0.00
Material Demolished (Building
Square Footage)
91,045
0.00
0.00
Parking Area Coated (sq ft)
Acres Paved (acres)
0.32
41 /43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
Control Strategies Applied
Frequency (per day)
PM10 Reduction
PM2.5 Reduction
Water Exposed Area
Water Demolished Area
5.7. Construction Paving
3
2
74%
36%
74%
36%
Land Use
Area Paved (acres)
% Asphalt
Single Family Housing
0.32
5.8. Construction Electricity Consumption and Emissions Factors
kWh per Year and Emission Factor (Ib/MWh)
Year
2027
2028
2029
2030
2031
5.18. Vegetation
5.18.1. Land Use Change
5.18.1.1. Unmitigated
kWh per Year
0.00
0.00
0.00
0.00
0.00
CO2
457
457
457
457
457
0%
CH4
0.03
0.03
0.03
0.03
0.03
N20
< 0.005
< 0.005
< 0.005
< 0.005
< 0.005
Vegetation Land Use Type
Vegetation Soil Type
Initial Acres
Final Acres
5.18.1. Biomass Cover Type
5.18.1.1. Unmitigated
Biomass Cover Type
Initial Acres
Final Acres
42/43
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 2) Custom Report, 7/17/2025
5.18.2. Sequestration
5.18.2.1. Unmitigated
Tree Type
Number
Electricity Saved (kWh/year)
Natural Gas Saved (btu/year)
8. User Changes to Default Data
Screen
Justification
Land Use
Construction: Construction Phases
Planning Area 2 includes 29 single family homes.
Assumed 10% of land use is landscaped.
Construction estimated to take place from early 2027 to mid 2031.
Building construction, paving, and architectural coating to occur intermittently as homes are
constructed.
43/43
A
APPENDIX A.3
Proposed Project Construction
(Planning Area 6)
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
SilverRock Resort Proposed Project Construction Phase 1 (Planning
Area 6) Custom Report
Table of Contents
1. Basic Project Information
1.1. Basic Project Information
1.2. Land Use Types
1.3. User -Selected Emission Reduction Measures by Emissions Sector
2. Emissions Summary
2.1. Construction Emissions Compared Against Thresholds
2.2. Construction Emissions by Year, Unmitigated
3. Construction Emissions Details
3.1. Grading (2027) - Unmitigated
3.3. Building Construction (2027) - Unmitigated
3.5. Building Construction (2028) - Unmitigated
3.7. Building Construction (2029) - Unmitigated
3.9. Paving (2027) - Unmitigated
3.11. Paving (2028) - Unmitigated
1 / 33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
3.13. Paving (2029) - Unmitigated
3.15. Architectural Coating (2027) - Unmitigated
3.17. Architectural Coating (2028) - Unmitigated
3.19. Architectural Coating (2029) - Unmitigated
4. Operations Emissions Details
4.10. Soil Carbon Accumulation By Vegetation Type
4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated
4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated
4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated
5. Activity Data
5.1. Construction Schedule
5.2. Off -Road Equipment
5.2.1. Unmitigated
5.3. Construction Vehicles
5.3.1. Unmitigated
5.4. Vehicles
5.4.1. Construction Vehicle Control Strategies
5.5. Architectural Coatings
2/33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
5.6. Dust Mitigation
5.6.1. Construction Earthmoving Activities
5.6.2. Construction Earthmoving Control Strategies
5.7. Construction Paving
5.8. Construction Electricity Consumption and Emissions Factors
5.18. Vegetation
5.18.1. Land Use Change
5.18.1.1. Unmitigated
5.18.1. Biomass Cover Type
5.18.1.1. Unmitigated
5.18.2. Sequestration
5.18.2.1. Unmitigated
8. User Changes to Default Data
3/33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
1. Basic Project Information
1.1. Basic Project Information
Data Field
Value
Project Name
Construction Start Date
Lead Agency
Land Use Scale
Analysis Level for Defaults
Windspeed (m/s)
Precipitation (days)
Location
County
City
Air District
Air Basin
TAZ
EDFZ
Electric Utility
Gas Utility
App Version
1.2. Land Use Types
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6)
1 / 1 /2027
Project/site
County
3.00
7.60
33.672095298053605, -116.2796035818008
Riverside -Salton Sea
La Quinta
South Coast AQMD
Salton Sea
5651
19
Imperial Irrigation District
Southern California Gas
2022.1.1.29
Land Use Subtype
Size
Unit
Lot Acreage
Building Area (sq ft)
Landscape Area (sq
ft)
Special Landscape
Area (sq ft)
Population
Description
Condo/Townhouse 70.0
Dwelling Unit
4.38
74,200
7,420
226
4/33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
1.3. User -Selected Emission Reduction Measures by Emissions Sector
No measures selected
2. Emissions Summary
2.1. Construction Emissions Compared Against Thresholds
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Un/Mit.
Daily,
Summer
(Max)
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
Unmit. 3.22 2.82 16.9 29.6 0.04 0.60 1.12 1.72 0.55 0.26 0.82
Daily,
Winter
(Max)
BCO2
NBCO2
CO2T
CH4
N2O
CO2e
5,255 5,255 0.17 0.10 3.94 5,293
Unmit. 3.16 2.77 16.9 26.8 0.04 0.60 2.04 2.64 0.55 0.94 1.49 5,085 5,085 0.17 0.10 0.10 5,119
Average
Daily
(Max)
Unmit. 2.17 1.92 11.6 19.6 0.03 0.42 0.85 1.27 0.39 0.24 0.63 3,673 3,673 0.12 0.07 1.10 3,698
Annual
(Max)
Unmit. 0.40 0.35 2.12 3.57 0.01 0.08 0.16 0.23 0.07 0.04 0.11 608 608 0.02 0.01 0.18 612
Exceeds
(Daily
Max)
Threshol
d
Unmit.
Exceeds
(Average
Daily)
75.0
100
550
150
150
55.0
No No No No No No
5/33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Threshol - 75.0 100 550 150
d
Unmit. No No No No
2.2. Construction Emissions by Year, Unmitigated
150 55.0
No
No
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Year
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM 10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N2O
CO2e
Daily - -
Summer
(Max)
2027 3.22 2.82 16.9 29.6 0.04 0.60 1.12 1.72 0.55 0.26 0.82 5,255 5,255 0.17 0.10 3.94 5,293
2028 3.10 2.73 16.1 29.2 0.04 0.53 1.12 1.65 0.49 0.26 0.75 5,228 5,228 0.17 0.10 3.56 5,266
2029 3.00 2.67 15.6 28.7 0.04 0.49 1.12 1.61 0.45 0.26 0.71 5,201 5,201 0.17 0.10 3.21 5,238
Daily -
Winter
(Max)
2027 3.16 2.77 16.9 26.8 0.04 0.60 2.04 2.64 0.55 0.94 1.49 5,085 5,085 0.17 0.10 0.10 5,119
2028 3.02 2.67 16.2 26.4 0.04 0.53 1.12 1.65 0.49 0.26 0.75 5,062 5,062 0.17 0.10 0.09 5,096
2029 2.96 2.58 15.6 26.2 0.04 0.49 1.12 1.61 0.45 0.26 0.71 5,038 5,038 0.17 0.10 0.08 5,072
Average
Daily
2027 2.12 1.86 11.6 18.6 0.03 0.42 0.85 1.27 0.39 0.24 0.63 3,445 3,445 0.12 0.06 1.08 3,468
2028 2.17 1.92 11.5 19.6 0.03 0.38 0.80 1.17 0.35 0.19 0.54 3,673 3,673 0.12 0.07 1.10 3,698
2029 1.73 1.54 9.10 15.7 0.02 0.29 0.65 0.93 0.26 0.15 0.42 2,976 2,976 0.10 0.06 0.81 2,996
Annual -
2027 0.39 0.34 2.12 3.40 < 0.005 0.08 0.16 0.23 0.07 0.04 0.11 570 570 0.02 0.01 0.18 574
2028 0.40 0.35 2.11 3.57 0.01 0.07 0.15 0.21 0.06 0.03 0.10 608 608 0.02 0.01 0.18 612
2029 0.32 0.28 1.66 2.87 < 0.005 0.05 0.12 0.17 0.05 0.03 0.08 493 493 0.02 0.01 0.13 496
6/33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
3. Construction Emissions Details
3.1. Grading (2027) - Unmitigated
Criteria Pollutants (Ib/day for daily, ton/yr for annual) and GHGs (Ib/day for daily, MT/yr for annual)
Location
TOG
Onsite
Daily,
Summer
(Max)
Daily,
Winter
(Max)
Off-Roa
d
Equipm
ent
1.89
Dust
From
Material
Movement
Onsite
truck
Average
Daily
Off-Roa
d
Equipm
ent
0.00
0.16
Dust
From
Material
Movement
Onsite
truck
0.00
ROG
NOx
CO
SO2
1.59
0.00
0.13
0.00
14.2
0.00
1.17
0.00
17.3
0.00
1.42
0.00
0.03
0.00
< 0.005
0.00
PM10E
PM1OD
PM1OT
0.60
0.00
0.05
0.00
1.84
0.00
0.15
0.00
0.60
1.84
0.00
0.05
0.15
0.00
PM2.5E
0.55
0.00
0.05
0.00
PM2.5D
PM2.5T
BCO2
0.89
0.00
0.07
0.00
0.55
0.89
0.00
0.05
0.07
0.00
NBCO2
CO2T
CH4
N20
2,960
0.00
243
0.00
2,960
0.00
243
0.00
0.12
0.00
0.01
0.00
0.02
0.00
< 0.005
0.00
CO2e
0.00
0.00
2,970
0.00
244
0.00
Annual -
7/33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Off-Roa 0.03 0.02 0.21 0.26 < 0.005 0.01 0.01 0.01 0.01 40.3 40.3 < 0.005 < 0.005 - 40.4
Equipment
Dust - 0.03 0.03 0.01 0.01
From
Material
Movement
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily,
Summer
(Max)
Daily,
Winter
(Max)
Worker 0.06 0.05 0.07 0.70 0.00 0.00 0.20 0.20 0.00 0.05 0.05 182 182 < 0.005 0.01 0.02 184
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.01 < 0.005 0.01 0.07 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 - 16.0 16.0 < 0.005 < 0.005 0.02 16.2
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 - 2.65 2.65 < 0.005 < 0.005 < 0.005 2.68
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.3. Building Construction (2027) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Onsite
8/33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Daily,
Summer
(Max)
Off-Roa 1.23 1.03 9.39 12.9 0.02 0.34 0.34 0.31 0.31 2,397 2,397 0.10 0.02 2,405
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 1.23 1.03 9.39 12.9 0.02 0.34 0.34 0.31 0.31 2,397 2,397 0.10 0.02 2,405
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.76 0.64 5.81 8.00 0.01 0.21 0.21 0.19 0.19 1,482 1,482 0.06 0.01 1,487
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.14 0.12 1.06 1.46 < 0.005 0.04 0.04 0.03 0.03 245 245 0.01 < 0.005 - 246
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily,
Summer
(Max)
9/33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Worker 0.24 0.22 0.22 4.15 0.00 0.00 0.66 0.66 0.00 0.15 0.15 718 718 0.01 0.02 2.12 728
Vendor 0.01 0.01 0.23 0.10 < 0.005 < 0.005 0.06 0.07 < 0.005 0.02 0.02 227 227 < 0.005 0.03 0.56 237
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.21 0.18 0.24 2.36 0.00 0.00 0.66 0.66 0.00 0.15 0.15 612 612 0.01 0.02 0.05 619
Vendor 0.01 0.01 0.25 0.10 < 0.005 < 0.005 0.06 0.07 < 0.005 0.02 0.02 228 228 < 0.005 0.03 0.01 237
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.13 0.12 0.13 1.83 0.00 0.00 0.41 0.41 0.00 0.09 0.09 404 404 < 0.005 0.01 0.57 409
Vendor 0.01 0.01 0.15 0.06 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 141 141 < 0.005 0.02 0.15 146
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.02 0.02 0.02 0.33 0.00 0.00 0.07 0.07 0.00 0.02 0.02 - 66.9 66.9 < 0.005 < 0.005 0.09 67.8
Vendor < 0.005 < 0.005 0.03 0.01 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 - 23.3 23.3 < 0.005 < 0.005 0.02 24.2
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
3.5. Building Construction (2028) - Unmitigated
Criteria Pollutants (Ib/day for daily, ton/yr for annual) and GHGs (Ib/day for daily, MT/yr for annual)
Location
Onsite
Daily,
Summer
(Max)
Off-Roa
d
Equipm
ent
TOG
1.18
ROG
0.99
NOx
8.92
CO
12.9
SO2
0.02
PM10E
0.30
PM10D
PM10T
0.30
PM2.5E
0.28
PM2.5D
PM2.5T
0.28
BCO2
NBCO2
2,397
CO2T
2,397
CH4
0.10
N20
0.02
CO2e
2,406
10/33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 1.18 0.99 8.92 12.9 0.02 0.30 0.30 0.28 0.28 2,397 2,397 0.10 0.02 2,406
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.85 0.71 6.39 9.26 0.02 0.22 0.22 0.20 0.20 1,717 1,717 0.07 0.01 1,723
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.15 0.13 1.17 1.69 < 0.005 0.04 0.04 0.04 0.04 284 284 0.01 < 0.005 - 285
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.23 0.21 0.20 3.88 0.00 0.00 0.66 0.66 0.00 0.15 0.15 705 705 0.01 0.02 1.90 714
Vendor 0.01 0.01 0.22 0.09 < 0.005 < 0.005 0.06 0.07 < 0.005 0.02 0.02 222 222 < 0.005 0.03 0.52 231
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
11 / 33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Worker 0.18 0.17 0.22 2.19 0.00 0.00 0.66 0.66 0.00 0.15 0.15 600 600 0.01 0.02 0.05 608
Vendor 0.01 0.01 0.24 0.10 < 0.005 < 0.005 0.06 0.07 < 0.005 0.02 0.02 222 222 < 0.005 0.03 0.01 231
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.13 0.13 0.14 1.97 0.00 0.00 0.47 0.47 0.00 0.11 0.11 459 459 0.01 0.02 0.59 465
Vendor 0.01 < 0.005 0.16 0.07 < 0.005 < 0.005 0.05 0.05 < 0.005 0.01 0.02 159 159 < 0.005 0.02 0.16 166
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.02 0.02 0.03 0.36 0.00 0.00 0.09 0.09 0.00 0.02 0.02 - 76.1 76.1 < 0.005 < 0.005 0.10 77.0
Vendor < 0.005 < 0.005 0.03 0.01 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 - 26.3 26.3 < 0.005 < 0.005 0.03 27.4
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
3.7. Building Construction (2029) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Onsite
Daily,
Summer
(Max)
Off-Roa 1.15 0.97 8.58 12.9 0.02 0.28
d
Equipm
ent
0.28 0.25 0.25
2,397 2,397 0.10 0.02 2,405
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
12/33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Off-Roa 1.15 0.97 8.58 12.9 0.02 0.28
d
Equipm
ent
0.28 0.25 0.25
2,397 2,397 0.10 0.02 2,405
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.67 0.56 5.00 7.52 0.01 0.16
d
Equipm
ent
0.16 0.15 0.15
1,398 1,398 0.06 0.01 1,403
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.12 0.10 0.91 1.37 < 0.005 0.03
d
Equipm
ent
0.03 0.03 0.03 231 231 0.01 < 0.005 - 232
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily,
Summer
(Max)
Worker 0.20 0.20 0.17 3.62 0.00 0.00 0.66 0.66 0.00 0.15 0.15 692 692 0.01 0.02 1.71 701
Vendor 0.01 0.01 0.21 0.09 < 0.005 < 0.005 0.06 0.07 < 0.005 0.02 0.02 216 216 < 0.005 0.03 0.48 225
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.17 0.14 0.19 2.06 0.00 0.00 0.66 0.66 0.00 0.15 0.15 590 590 0.01 0.02 0.04 597
Vendor 0.01 0.01 0.23 0.09 < 0.005 < 0.005 0.06 0.07 < 0.005 0.02 0.02 216 216 < 0.005 0.03 0.01 225
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
13/33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Average
Daily
Worker 0.10 0.10 0.10 1.49 0.00 0.00 0.38 0.38 0.00 0.09 0.09 367 367 < 0.005 0.01 0.43 372
Vendor 0.01 < 0.005 0.13 0.05 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 126 126 < 0.005 0.02 0.12 131
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.02 0.02 0.02 0.27 0.00 0.00 0.07 0.07 0.00 0.02 0.02 - 60.8 60.8 < 0.005 < 0.005 0.07 61.6
Vendor < 0.005 < 0.005 0.02 0.01 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 - 20.9 20.9 < 0.005 < 0.005 0.02 21.7
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
3.9. Paving (2027) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
Daily,
Summer
(Max)
TOG
ROG
NOx
CO
SO2
PM10E
Off-Roa 0.79 0.66 6.09 8.83 0.01 0.24
d
Equipm
ent
Paving 0.00 0.00
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
0.24 0.22 0.22
BCO2
NBCO2
CO2T
CH4
N20
CO2e
1,350 1,350 0.05 0.01 1,355
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.79 0.66 6.09 8.83 0.01 0.24
d
Equipm
ent
Paving 0.00 0.00
0.24 0.22 0.22
1,350 1,350 0.05 0.01 1,355
14/33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.49 0.41 3.76 5.46 0.01 0.15 0.15 0.14 0.14 835 835 0.03 0.01 838
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.09 0.07 0.69 1.00 < 0.005 0.03 0.03 0.03 0.03 138 138 0.01 < 0.005 - 139
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily,
Summer
(Max)
Worker 0.10 0.09 0.09 1.65 0.00 0.00 0.26 0.26 0.00 0.06 0.06 285 285 < 0.005 0.01 0.84 289
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.08 0.07 0.09 0.94 0.00 0.00 0.26 0.26 0.00 0.06 0.06 243 243 < 0.005 0.01 0.02 246
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
15/33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Worker 0.05 0.05 0.05 0.72 0.00 0.00 0.16 0.16 0.00 0.04 0.04 160 160 < 0.005 0.01 0.22 162
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.01 0.01 0.01 0.13 0.00 0.00 0.03 0.03 0.00 0.01 0.01 26.6 26.6 < 0.005 < 0.005 0.04 26.9
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.11. Paving (2028) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
Onsite
Daily,
Summer
(Max)
Off-Roa
d
Equipm
ent
0.75
ROG
NOx
CO
SO2
0.63
Paving 0.00 0.00
Onsite
truck
Daily,
Winter
(Max)
Off-Roa
d
Equipm
ent
0.00
0.75
0.00
0.63
Paving 0.00 0.00
Onsite
truck
0.00
0.00
5.85
0.00
5.85
0.00
8.80
0.00
8.80
0.00
0.01
0.00
0.01
0.00
PM10E
PM10D
PM 10T
PM2.5E
PM2.5D
PM2.5T
BCO2
0.21
0.00
0.21
0.00
0.00
0.00
0.21
0.00
0.21
0.00
0.19
0.00
0.19
0.00
0.00
0.00
0.19
0.00
0.19
0.00
NBCO2
CO2T
CH4
N20
1,350
0.00
1,350
0.00
1,350
0.00
1,350
0.00
0.05
0.00
0.05
0.00
0.01
0.00
0.01
0.00
CO2e
0.00
0.00
1,355
0.00
1,355
0.00
16/33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Average
Daily
Off-Roa 0.53 0.45 4.19 6.30 0.01 0.15 0.15 0.14 0.14 967 967 0.04 0.01 970
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.10 0.08 0.76 1.15 < 0.005 0.03 0.03 0.03 0.03 160 160 0.01 < 0.005 - 161
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.09 0.08 0.08 1.54 0.00 0.00 0.26 0.26 0.00 0.06 0.06 280 280 < 0.005 0.01 0.76 283
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.07 0.07 0.09 0.87 0.00 0.00 0.26 0.26 0.00 0.06 0.06 238 238 < 0.005 0.01 0.02 241
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.05 0.05 0.06 0.78 0.00 0.00 0.19 0.19 0.00 0.04 0.04 182 182 < 0.005 0.01 0.23 185
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
17/33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.01 0.01 0.01 0.14 0.00 0.00 0.03 0.03 0.00 0.01 0.01 30.2 30.2 < 0.005 < 0.005 0.04 30.6
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.13. Paving (2029) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
Onsite
Daily,
Summer
(Max)
Off-Roa
d
Equipm
ent
0.74
ROG
NOx
CO
SO2
0.62
Paving 0.00 0.00
Onsite
truck
Daily,
Winter
(Max)
Off-Roa
d
Equipm
ent
0.00
0.74
0.00
0.62
Paving 0.00 0.00
Onsite
truck
Average
Daily
0.00
0.00
5.73
0.00
5.73
0.00
8.81
0.00
8.81
0.00
0.01
0.00
0.01
0.00
PM10E
PM10D
PM 10T
0.20
0.00
0.20
0.00
0.00
0.00
0.20
0.00
0.20
0.00
PM2.5E
0.18
0.00
0.18
0.00
PM2.5D
PM2.5T
BCO2
0.00
0.00
0.18
0.00
0.18
0.00
NBCO2
CO2T
CH4
N20
1,350
0.00
1,350
0.00
1,350
0.00
1,350
0.00
0.05
0.00
0.05
0.00
0.01
0.00
0.01
0.00
CO2e
0.00
0.00
1,354
0.00
1,354
0.00
18/33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Off-Roa 0.43 0.36 3.34 5.14 0.01 0.12
d
Paving 0.00 0.00
0.12 0.11 0.11
787 787 0.03 0.01 790
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.08 0.07 0.61 0.94 < 0.005 0.02 0.02 0.02 0.02 130 130 0.01 < 0.005 - 131
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.08 0.08 0.07 1.43 0.00 0.00 0.26 0.26 0.00 0.06 0.06 275 275 < 0.005 0.01 0.68 278
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.07 0.06 0.08 0.82 0.00 0.00 0.26 0.26 0.00 0.06 0.06 234 234 < 0.005 0.01 0.02 237
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.04 0.04 0.04 0.59 0.00 0.00 0.15 0.15 0.00 0.04 0.04 146 146 < 0.005 0.01 0.17 148
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
19/33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Worker 0.01 0.01 0.01 0.11 0.00 0.00 0.03 0.03 0.00 0.01 0.01 24.1 24.1 < 0.005 < 0.005 0.03 24.4
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.15. Architectural Coating (2027) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Onsite
Daily,
Summer
(Max)
Off-Roa 0.14 0.11 0.83 1.13 < 0.005 0.02
d
Equipm
ent
Architect 0.66 0.66
ural
Coating
s
0.02 0.02 0.02
134 134 0.01 < 0.005 - 134
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.14 0.11 0.83 1.13 < 0.005 0.02
d
Equipm
ent
Architect 0.66
ural
Coating
s
0.66
0.02 0.02 0.02
134 134 0.01 < 0.005 - 134
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
20 / 33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Average
Daily
Off-Roa 0.08 0.07 0.51 0.70 < 0.005 0.01 0.01 0.01 0.01 82.6 82.6 < 0.005 < 0.005 - 82.8
d
Equipm
ent
Architect 0.41 0.41
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual -
Off-Roa 0.02 0.01 0.09 0.13 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 13.7 13.7 < 0.005 < 0.005 - 13.7
d
Equipm
ent
Architect 0.07 0.07
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.05 0.04 0.04 0.83 0.00 0.00 0.13 0.13 0.00 0.03 0.03 144 144 < 0.005 < 0.005 0.42 146
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.04 0.04 0.05 0.47 0.00 0.00 0.13 0.13 0.00 0.03 0.03 122 122 < 0.005 < 0.005 0.01 124
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
21 / 33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.03 0.02 0.03 0.37 0.00 0.00 0.08 0.08 0.00 0.02 0.02 80.8 80.8 < 0.005 < 0.005 0.11 81.9
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.07 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 - 13.4 13.4 < 0.005 < 0.005 0.02 13.6
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.17. Architectural Coating (2028) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Onsite
Daily,
Summer
(Max)
Off-Roa 0.13 0.11 0.81 1.12 < 0.005 0.02
d
Equipm
ent
Architect 0.66 0.66
ural
Coating
s
0.02 0.01 - 0.01 - 134 134 0.01 < 0.005 - 134
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
22 / 33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Off-Roa 0.13 0.11 0.81 1.12 < 0.005 0.02
d
Equipm
Architect 0.66 0.66
ural
Coating
s
0.02 0.01 0.01
134 134 0.01 < 0.005 - 134
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average -
Daily
Off-Roa 0.09 0.08 0.58 0.80 < 0.005 0.01
d
Equipm
ent
Architect 0.48
ural
Coating
s
0.48
0.01 0.01 0.01 95.6 95.6 < 0.005 < 0.005 - 96.0
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.02 0.01 0.11 0.15 < 0.005 < 0.005 -
d
Equipm
ent
Architect 0.09 0.09
ural
Coating
s
< 0.005 < 0.005 - < 0.005 -
15.8 15.8 < 0.005 < 0.005 - 15.9
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily,
Summer
(Max)
Worker 0.05 0.04 0.04 0.78 0.00 0.00 0.13 0.13 0.00 0.03 0.03 141 141 < 0.005 < 0.005 0.38 143
23 / 33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.04 0.03 0.04 0.44 0.00 0.00 0.13 0.13 0.00 0.03 0.03 120 120 < 0.005 < 0.005 0.01 122
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average -
Daily
Worker 0.03 0.03 0.03 0.39 0.00 0.00 0.09 0.09 0.00 0.02 0.02 91.9 91.9 < 0.005 < 0.005 0.12 93.0
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 0.01 0.07 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 - 15.2 15.2 < 0.005 < 0.005 0.02 15.4
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.19. Architectural Coating (2029) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM 10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Onsite
Daily,
Summer
(Max)
Off-Roa 0.12 0.10 0.79 1.11 < 0.005 0.01
d
Equipm
ent
0.01 0.01 0.01
134 134 0.01 < 0.005 - 134
24/33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Architect 0.66
ural
Coating
s
0.66
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.12 0.10 0.79 1.11 < 0.005 0.01 0.01 0.01 0.01 134 134 0.01 < 0.005 - 134
d
Equipm
ent
Architect 0.66 0.66
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.07 0.06 0.46 0.65 < 0.005 0.01 0.01 0.01 0.01 77.9 77.9 < 0.005 < 0.005 - 78.1
d
Equipm
ent
Architect 0.39 0.39
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.01 0.01 0.08 0.12 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 12.9 12.9 < 0.005 < 0.005 - 12.9
d
Equipm
ent
25 / 33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Architect 0.07 0.07
ural
Coating
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily,
Summer
(Max)
Worker 0.04 0.04 0.03 0.72 0.00 0.00 0.13 0.13 0.00 0.03 0.03 138 138 < 0.005 < 0.005 0.34 140
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily, -
Winter
(Max)
Worker 0.03 0.03 0.04 0.41 0.00 0.00 0.13 0.13 0.00 0.03 0.03 118 118 < 0.005 < 0.005 0.01 119
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average -
Daily
Worker 0.02 0.02 0.02 0.30 0.00 0.00 0.08 0.08 0.00 0.02 0.02 73.5 73.5 < 0.005 < 0.005 0.09 74.4
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual -
Worker < 0.005 < 0.005 < 0.005 0.05 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 - 12.2 12.2 < 0.005 < 0.005 0.01 12.3
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
4. Operations Emissions Details
4.10. Soil Carbon Accumulation By Vegetation Type
26 / 33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Vegetati
on
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N2O
CO2e
Daily,
Summer
(Max)
Total
Daily,
Winter
(Max)
Total
Annual
Total
4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Land
Use
Daily,
Summer
(Max)
Total
Daily,
Winter
(Max)
Total
Annual
Total
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N2O
CO2e
27/33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Species
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM 10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N2O
CO2e
Daily,
Summer
(Max)
Avoided
Subtotal
Sequest
ered
Subtotal
Remove
d
Subtotal —
Daily,
Winter
(Max)
Avoided
Subtotal
Sequest
ered
Subtotal
Remove
d
Subtotal
Annual
Avoided
Subtotal
Sequest
ered
Subtotal
28 / 33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Remove -
Subtotal -
5. Activity Data
5.1. Construction Schedule
Phase Name
Phase Type
Start Date
End Date
Days Per Week
Work Days per Phase
Phase Description
Grading Grading
Building Construction Building Construction
Paving Paving
Architectural Coating Architectural Coating
5.2. Off -Road Equipment
5.2.1. Unmitigated
1 /1 /2027
2/19/2027
2/19/2027
2/19/2027
2/11/2027
10/25/2029
10/25/2029
10/25/2029
5.00
5.00
5.00
5.00
30.0
700
700
700
Phase Name
Equipment Type
Fuel Type
Engine Tier
Number per Day
Hours Per Day
Horsepower
Load Factor
Grading
Grading
Grading
Grading
Building Construction
Building Construction
Building Construction
Building Construction
Building Construction
Excavators
Graders
Rubber Tired Dozers
Tractors/Loaders/Back
hoes
Cranes
Forklifts
Generator Sets
Tractors/Loaders/Back
hoes
Welders
Diesel
Diesel
Diesel
Diesel
Diesel
Diesel
Diesel
Diesel
Diesel
Average
Average
Average
Average
Average
Average
Average
Average
Average
1.00
1.00
1.00
3.00
1.00
3.00
1.00
3.00
8.00
8.00
8.00
8.00
7.00
8.00
8.00
7.00
1.00 8.00
36.0
148
367
84.0
367
82.0
14.0
84.0
46.0
0.38
0.41
0.40
0.37
0.29
0.20
0.74
0.37
0.45
29 / 33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Paving Pavers Diesel Average 1.00 8.00 81.0 0.42
Paving Paving Equipment Diesel Average 2.00 6.00 89.0 0.36
Paving Rollers Diesel Average 2.00 6.00 36.0 0.38
Paving Cement and Mortar Diesel Average 2.00 6.00 10.0 0.56
Mixers
Paving Tractors/Loaders/Back Diesel Average 1.00 8.00 84.0 0.37
hoes
Architectural Coating Air Compressors Diesel Average 1.00 6.00 37.0 0.48
5.3. Construction Vehicles
5.3.1. Unmitigated
Phase Name
Trip Type
One -Way Trips per Day
Miles per Trip
Vehicle Mix
Grading
Grading
Grading
Grading
Grading
Building Construction
Building Construction
Building Construction
Building Construction
Building Construction
Paving
Paving
Paving
Paving
Paving
Architectural Coating
Worker
Vendor
Hauling
Onsite truck
Worker
Vendor
Hauling
Onsite truck
Worker
Vendor
Hauling
Onsite truck
15.0
0.00
18.5
10.2
20.0
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
HHDT
50.4 18.5 LDA,LDT1,LDT2
7.48 10.2 HHDT,MHDT
0.00 20.0 HHDT
HHDT
20.0 18.5 LDA,LDT1,LDT2
10.2 HHDT,MHDT
0.00 20.0 HHDT
HHDT
30 / 33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Architectural Coating
Architectural Coating
Architectural Coating
Architectural Coating
Worker
Vendor
Hauling
Onsite truck
10.1
0.00
18.5
10.2
20.0
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
HHDT
5.4. Vehicles
5.4.1. Construction Vehicle Control Strategies
Control Strategies Applied
PM10 Reduction
PM2.5 Reduction
Water unpaved roads twice daily
Limit vehicle speeds on unpaved roads to 25 mph
Sweep paved roads once per month
55%
44%
9%
55%
44%
9%
5.5. Architectural Coatings
Phase Name
Architectural Coating
Residential Interior Area
Coated (sq ft)
150,255
Residential Exterior Area
Coated (sq ft)
50,085
Non -Residential Interior Area
Coated (sq ft)
0.00
Non -Residential Exterior Area
Coated (sq ft)
0.00
Parking Area Coated (sq ft)
5.6. Dust Mitigation
5.6.1. Construction Earthmoving Activities
Phase Name
Grading
Paving
Material Imported (cy)
0.00
Material Exported (cy)
0.00
Acres Graded (acres)
30.0
0.00
Material Demolished (sq. ft.)
0.00
0.00
Acres Paved (acres)
5.6.2. Construction Earthmoving Control Strategies
Control Strategies Applied
Frequency (per day)
PM10 Reduction
PM2.5 Reduction
31 / 33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
Water Exposed Area
Water Demolished Area
5.7. Construction Paving
3
2
74%
36%
74%
36%
Land Use
Area Paved (acres)
% Asphalt
Condo/Townhouse
5.8. Construction Electricity Consumption and Emissions Factors
kWh per Year and Emission Factor (Ib/MWh)
0%
Year
kWh per Year
CO2
CH4
N2O
2027
2028
2029
5.18. Vegetation
5.18.1. Land Use Change
5.18.1.1. Unmitigated
0.00
0.00
0.00
457
457
457
0.03
0.03
0.03
< 0.005
< 0.005
< 0.005
Vegetation Land Use Type
Vegetation Soil Type
Initial Acres
Final Acres
5.18.1. Biomass Cover Type
5.18.1.1. Unmitigated
Biomass Cover Type
Initial Acres
Final Acres
5.18.2. Sequestration
32/33
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 6) Custom Report, 7/18/2025
5.18.2.1. Unmitigated
Tree Type
Number
Electricity Saved (kWh/year)
Natural Gas Saved (btu/year)
8. User Changes to Default Data
Screen
Justification
Land Use
Construction: Construction Phases
Construction estimated to take place from early 2027 to October 2029.
Building construction, paving, and architectural coating to occur intermittently as condos are
constructed.
33 / 33
A
APPENDIX A.4
Proposed Project Construction
(Planning Area 7)
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
SilverRock Resort Proposed Project Construction Phase 1 (Planning
Area 7) Custom Report
Table of Contents
1. Basic Project Information
1.1. Basic Project Information
1.2. Land Use Types
1.3. User -Selected Emission Reduction Measures by Emissions Sector
2. Emissions Summary
2.1. Construction Emissions Compared Against Thresholds
2.2. Construction Emissions by Year, Unmitigated
3. Construction Emissions Details
3.1. Grading (2030) - Unmitigated
3.3. Building Construction (2030) - Unmitigated
3.5. Building Construction (2031) - Unmitigated
3.7. Building Construction (2032) - Unmitigated
3.9. Building Construction (2033) - Unmitigated
3.11. Paving (2030) - Unmitigated
1 / 39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
3.13. Paving (2031) - Unmitigated
3.15. Paving (2032) - Unmitigated
3.17. Paving (2033) - Unmitigated
3.19. Architectural Coating (2030) - Unmitigated
3.21. Architectural Coating (2031) - Unmitigated
3.23. Architectural Coating (2032) - Unmitigated
3.25. Architectural Coating (2033) - Unmitigated
4. Operations Emissions Details
4.10. Soil Carbon Accumulation By Vegetation Type
4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated
4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated
4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated
5. Activity Data
5.1. Construction Schedule
5.2. Off -Road Equipment
5.2.1. Unmitigated
5.3. Construction Vehicles
5.3.1. Unmitigated
2/39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
5.4. Vehicles
5.4.1. Construction Vehicle Control Strategies
5.5. Architectural Coatings
5.6. Dust Mitigation
5.6.1. Construction Earthmoving Activities
5.6.2. Construction Earthmoving Control Strategies
5.7. Construction Paving
5.8. Construction Electricity Consumption and Emissions Factors
5.18. Vegetation
5.18.1. Land Use Change
5.18.1.1. Unmitigated
5.18.1. Biomass Cover Type
5.18.1.1. Unmitigated
5.18.2. Sequestration
5.18.2.1. Unmitigated
8. User Changes to Default Data
3/39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
1. Basic Project Information
1.1. Basic Project Information
Data Field
Value
Project Name
Construction Start Date
Lead Agency
Land Use Scale
Analysis Level for Defaults
Windspeed (m/s)
Precipitation (days)
Location
County
City
Air District
Air Basin
TAZ
EDFZ
Electric Utility
Gas Utility
App Version
1.2. Land Use Types
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7)
1 / 1 /2030
Project/site
County
3.00
7.60
33.672095298053605, -116.2796035818008
Riverside -Salton Sea
La Quinta
South Coast AQMD
Salton Sea
5651
19
Imperial Irrigation District
Southern California Gas
2022.1.1.29
Land Use Subtype
Size
Unit
Lot Acreage
Building Area (sq ft)
Landscape Area (sq
ft)
Special Landscape
Area (sq ft)
Population
Description
Single Family
Housing
93.0
Dwelling Unit
30.2
181,350
18,135
300
4/39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
1.3. User -Selected Emission Reduction Measures by Emissions Sector
No measures selected
2. Emissions Summary
2.1. Construction Emissions Compared Against Thresholds
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Un/Mit.
TOG
Daily,
Summer
(Max)
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N2O
CO2e
Unmit. 3.63 3.28 15.9 27.7 0.04 0.50 0.81 1.30 0.46 0.19 0.65 5,065 5,065 0.17 0.10 2.25 5,100
Daily,
Winter
(Max)
Unmit. 3.60 3.24 21.7 27.6 0.06 0.88 2.65 3.54 0.81 1.01 1.83 6,826 6,826 0.27 0.10 0.06 6,852
Average
Daily
(Max)
Unmit. 2.54 2.29 12.1 19.2 0.03 0.40 0.80 1.20 0.37 0.24 0.61 3,798 3,798 0.14 0.07 0.62 3,821
Annual
(Max)
Unmit. 0.46 0.42 2.21 3.50 0.01 0.07 0.15 0.22 0.07 0.04 0.11 629 629 0.02 0.01 0.10 633
Exceeds
(Daily
Max)
Threshol
d
Unmit.
Exceeds
(Average
Daily)
75.0
100
550
150
150
55.0
No No No No No No
5/39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Threshol - 75.0 100 550 150
d
Unmit. No No No No
150 55.0
No
No
2.2. Construction Emissions by Year, Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Year
Daily -
Summer
(Max)
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM 10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N2O
CO2e
2030 3.63 3.28 15.9 27.7 0.04 0.50 0.81 1.30 0.46 0.19 0.65 5,065 5,065 0.17 0.10 2.25 5,100
2031 3.57 3.22 15.4 27.4 0.04 0.47 0.81 1.27 0.43 0.19 0.62 5,044 5,044 0.17 0.10 2.02 5,080
2032 3.51 3.17 15.0 27.1 0.04 0.44 0.81 1.24 0.40 0.19 0.59 5,026 5,026 0.17 0.07 1.80 5,054
2033 3.45 3.12 14.7 26.9 0.04 0.40 0.81 1.20 0.37 0.19 0.56 5,009 5,009 0.17 0.07 1.60 5,036
Daily -
Winter
(Max)
2030 3.60
2031 3.54
2032 3.48
2033 3.41
Average
Daily
3.24 21.7 27.6 0.06 0.88 2.65 3.54 0.81 1.01 1.83 6,826 6,826 0.27 0.10
3.19 15.5 25.9 0.04 0.47 0.81 1.27 0.43 0.19 0.62 4,937 4,937 0.17 0.10
3.14 15.1 25.7 0.04 0.44 0.81 1.24 0.40 0.19 0.59 4,921 4,921 0.17 0.09
3.10 14.8 25.6 0.04 0.40 0.81 1.20 0.37 0.19 0.56 4,905 4,905 0.17 0.09
0.06 6,852
0.05 4,970
0.05 4,953
0.04 4,937
2030 2.54 2.26 12.1 19.2 0.03 0.40 0.80 1.20 0.37 0.24 0.61 3,798 3,798 0.14 0.06 0.61 3,821
2031 2.53 2.29 11.0 18.9 0.03 0.33 0.57 0.91 0.31 0.14 0.44 3,557 3,557 0.12 0.07 0.62 3,581
2032 2.50 2.26 10.8 18.7 0.03 0.31 0.57 0.89 0.29 0.14 0.42 3,554 3,554 0.12 0.07 0.56 3,578
2033 0.67 0.61 2.91 5.14 0.01 0.08 0.16 0.24 0.07 0.04 0.11 978 978 0.03 0.01 0.14 983
Annual
2030 0.46 0.41 2.21 3.50 0.01 0.07 0.15 0.22 0.07 0.04 0.11 629 629 0.02 0.01 0.10 633
2031 0.46 0.42 2.02 3.44 0.01 0.06 0.10 0.17 0.06 0.02 0.08 589 589 0.02 0.01 0.10 593
6/39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
2032 0.46 0.41 1.97 3.42 0.01 0.06 0.10 0.16 0.05 0.03 0.08 588 588 0.02 0.01 0.09 592
2033 0.12 0.11 0.53 0.94 < 0.005 0.01 0.03 0.04 0.01 0.01 0.02
3. Construction Emissions Details
3.1. Grading (2030) - Unmitigated
Criteria Pollutants (Ib/day for daily, ton/yr for annual) and GHGs (Ib/day for daily, MT/yr for annual)
Location
Onsite
Daily,
Summer
(Max)
Daily,
Winter
(Max)
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM1OT
PM2.5E
0ff-Roa 3.23 2.72 21.7 26.9 0.06 0.88 0.88 0.81
d
Equipm
ent
Dust
From
Material
Movement
2.39 2.39
PM2.5D
PM2.5T
0.81
0.95 0.95
BCO2
162 162 0.01 < 0.005 0.02 163
NBCO2
CO2T
CH4
N20
6,596 6,596 0.27 0.05
CO2e
6,619
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
0ff-Roa 0.40 0.34 2.67 3.31 0.01 0.11 0.11 0.10 0.10 813 813 0.03
d
Equipm
ent
Dust 0.30 0.30 0.12 0.12
From
Material
Movement
0.01
816
7/39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.07 0.06 0.49 0.60 < 0.005 0.02 0.02 0.02 0.02 135 135 0.01 < 0.005 - 135
d
Equipm
ent
Dust 0.05 0.05 0.02 0.02
From
Material
Movement
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Daily,
Winter
(Max)
Worker 0.06 0.06 0.07 0.76 0.00 0.00 0.26 0.26 0.00 0.06 0.06 230 230 < 0.005 0.01 0.02 233
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.01 0.01 0.01 0.12 0.00 0.00 0.03 0.03 0.00 0.01 0.01 30.3 30.3 < 0.005 < 0.005 0.03 30.7
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.02 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 - 5.02 5.02 < 0.005 < 0.005 0.01 5.08
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
8/39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
3.3. Building Construction (2030) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
Onsite
Daily,
Summer
(Max)
Off-Roa
d
Equipm
ent
Onsite
truck
Daily,
Winter
(Max)
Off-Roa
d
Equipm
ent
Onsite
truck
Average
Daily
Off-Roa
d
Equipm
ent
Onsite
truck
1.12
0.00
1.12
0.00
0.66
0.00
Annual -
Off-Roa
d
Equipm
ent
0.12
ROG
NOx
CO
SO2
0.94
0.00
0.94
0.00
0.56
0.00
0.10
8.39 12.9
0.00 0.00
8.39 12.9
0.00 0.00
4.96 7.61
0.00 0.00
0.91 1.39
0.02
0.00
0.02
0.00
0.01
0.00
< 0.005
PM10E
PM10D
PM 10T
0.26
0.00
0.26
0.00
0.15
0.00
0.03
0.00
0.00
0.00
0.26
0.00
0.26
0.00
0.15
0.00
0.03
PM2.5E
0.24
0.00
0.24
0.00
0.14
0.00
0.03
PM2.5D
PM2.5T
BCO2
0.00
0.00
0.00
0.24
0.00
0.24
0.00
0.14
0.00
0.03
NBCO2
CO2T
CH4
N20
2,397
0.00
2,397
0.00
1,417
0.00
235
2,397 0.10
0.00 0.00
2,397 0.10
0.00 0.00
1,417 0.06
0.00 0.00
235 0.01
0.02
0.00
0.02
0.00
0.01
0.00
< 0.005
CO2e
0.00
0.00
0.00
2,405
0.00
2,405
0.00
1,421
0.00
235
9/39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.13 0.11 0.10 2.25 0.00 0.00 0.44 0.44 0.00 0.10 0.10 452 452 < 0.005 0.02 1.01 458
Vendor 0.01 0.01 0.27 0.12 < 0.005 < 0.005 0.09 0.09 < 0.005 0.02 0.03 279 279 < 0.005 0.04 0.58 291
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.11 0.09 0.11 1.27 0.00 0.00 0.44 0.44 0.00 0.10 0.10 385 385 0.01 0.02 0.03 390
Vendor 0.01 0.01 0.29 0.12 < 0.005 < 0.005 0.09 0.09 < 0.005 0.02 0.03 279 279 < 0.005 0.04 0.02 291
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.07 0.06 0.07 0.94 0.00 0.00 0.26 0.26 0.00 0.06 0.06 243 243 < 0.005 0.01 0.26 246
Vendor 0.01 < 0.005 0.17 0.07 < 0.005 < 0.005 0.05 0.05 < 0.005 0.01 0.02 165 165 < 0.005 0.02 0.15 172
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.01 0.01 0.01 0.17 0.00 0.00 0.05 0.05 0.00 0.01 0.01 - 40.3 40.3 < 0.005 < 0.005 0.04 40.8
Vendor < 0.005 < 0.005 0.03 0.01 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 - 27.3 27.3 < 0.005 < 0.005 0.02 28.4
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
3.5. Building Construction (2031) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
10/39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Daily,
Summer
(Max)
Off-Roa 1.10 0.92 8.12 12.8 0.02 0.24 0.24 0.22 0.22 2,397 2,397 0.10 0.02 2,405
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 1.10 0.92 8.12 12.8 0.02 0.24 0.24 0.22 0.22 2,397 2,397 0.10 0.02 2,405
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.78 0.66 5.80 9.18 0.02 0.17 0.17 0.16 0.16 1,712 1,712 0.07 0.01 1,718
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.14 0.12 1.06 1.67 < 0.005 0.03 0.03 0.03 0.03 283 283 0.01 < 0.005 - 284
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily,
Summer
(Max)
11 / 39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Worker 0.12 0.10 0.10 2.10 0.00 0.00 0.44 0.44 0.00 0.10 0.10 445 445 < 0.005 0.02 0.90 450
Vendor 0.01 0.01 0.26 0.11 < 0.005 < 0.005 0.09 0.09 < 0.005 0.02 0.03 271 271 < 0.005 0.04 0.53 283
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.10 0.09 0.10 1.19 0.00 0.00 0.44 0.44 0.00 0.10 0.10 379 379 < 0.005 0.02 0.02 384
Vendor 0.01 0.01 0.28 0.12 < 0.005 < 0.005 0.09 0.09 < 0.005 0.02 0.03 271 271 < 0.005 0.04 0.01 282
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.08 0.07 0.07 1.06 0.00 0.00 0.31 0.31 0.00 0.07 0.07 289 289 < 0.005 0.01 0.28 293
Vendor 0.01 0.01 0.20 0.08 < 0.005 < 0.005 0.06 0.06 < 0.005 0.02 0.02 194 194 < 0.005 0.03 0.16 202
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.01 0.01 0.01 0.19 0.00 0.00 0.06 0.06 0.00 0.01 0.01 - 47.9 47.9 < 0.005 < 0.005 0.05 48.5
Vendor < 0.005 < 0.005 0.04 0.01 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 - 32.0 32.0 < 0.005 < 0.005 0.03 33.4
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
3.7. Building Construction (2032) - Unmitigated
Criteria Pollutants (Ib/day for daily, ton/yr for annual) and GHGs (Ib/day for daily, MT/yr for annual)
Location
Onsite
Daily,
Summer
(Max)
Off-Roa
d
Equipm
ent
TOG
1.07
ROG
0.90
NOx
7.87
CO
12.8
SO2
0.02
PM10E
0.22
PM10D
PM10T
0.22
PM2.5E
0.21
PM2.5D
PM2.5T
0.21
BCO2
NBCO2
2,397
CO2T
2,397
CH4
0.10
N20
0.02
CO2e
2,405
12/39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 1.07 0.90 7.87 12.8 0.02 0.22 0.22 0.21 0.21 2,397 2,397 0.10 0.02 2,405
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.77 0.64 5.64 9.16 0.02 0.16 0.16 0.15 0.15 1,717 1,717 0.07 0.01 1,723
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.14 0.12 1.03 1.67 < 0.005 0.03 0.03 0.03 0.03 284 284 0.01 < 0.005 - 285
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.11 0.10 0.09 1.98 0.00 0.00 0.44 0.44 0.00 0.10 0.10 438 438 < 0.005 < 0.005 0.80 440
Vendor 0.01 0.01 0.25 0.11 < 0.005 < 0.005 0.09 0.09 < 0.005 0.02 0.03 263 263 < 0.005 0.04 0.48 274
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
13/39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Worker 0.10 0.08 0.10 1.12 0.00 0.00 0.44 0.44 0.00 0.10 0.10 374 374 < 0.005 0.02 0.02 379
Vendor 0.01 0.01 0.27 0.11 < 0.005 < 0.005 0.09 0.09 < 0.005 0.02 0.03 263 263 < 0.005 0.04 0.01 274
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.07 0.06 0.06 1.01 0.00 0.00 0.31 0.31 0.00 0.07 0.07 286 286 < 0.005 0.01 0.25 290
Vendor 0.01 0.01 0.19 0.08 < 0.005 < 0.005 0.06 0.06 < 0.005 0.02 0.02 188 188 < 0.005 0.03 0.15 196
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.01 0.01 0.01 0.18 0.00 0.00 0.06 0.06 0.00 0.01 0.01 - 47.4 47.4 < 0.005 < 0.005 0.04 48.0
Vendor < 0.005 < 0.005 0.03 0.01 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 - 31.2 31.2 < 0.005 < 0.005 0.02 32.5
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
3.9. Building Construction (2033) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
Daily,
Summer
(Max)
TOG
ROG
NOx
CO
SO2
PM10E
Off-Roa 1.05 0.88 7.67 12.8 0.02 0.20
d
Equipm
ent
PM10D
PM1OT
PM2.5E
PM2.5D
PM2.5T
0.20 0.19 0.19
BCO2
NBCO2
CO2T
CH4
N20
CO2e
2,397 2,397 0.10 0.02 2,405
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
14/39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Off-Roa 1.05 0.88 7.67 12.8 0.02 0.20
d
Equipm
ent
0.20 0.19 0.19
2,397 2,397 0.10 0.02 2,405
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.21 0.17 1.52 2.53 < 0.005 0.04
d
Equipm
ent
0.04 0.04 0.04
474 474 0.02 < 0.005 - 475
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.04 0.03 0.28 0.46 < 0.005 0.01
d
Equipm
ent
0.01 0.01 0.01 78.4 78.4 < 0.005 < 0.005 - 78.7
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily,
Summer
(Max)
Worker 0.11 0.09 0.07 1.87 0.00 0.00 0.44 0.44 0.00 0.10 0.10 432 432 < 0.005 < 0.005 0.71 434
Vendor 0.01 0.01 0.25 0.11 < 0.005 < 0.005 0.09 0.09 < 0.005 0.02 0.03 255 255 < 0.005 0.04 0.43 266
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.08 0.08 0.09 1.05 0.00 0.00 0.44 0.44 0.00 0.10 0.10 369 369 < 0.005 0.02 0.02 374
Vendor 0.01 0.01 0.26 0.11 < 0.005 < 0.005 0.09 0.09 < 0.005 0.02 0.03 256 256 < 0.005 0.04 0.01 266
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
15/39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Average
Daily
Worker 0.02 0.02 0.02 0.26 0.00 0.00 0.09 0.09 0.00 0.02 0.02 77.9 77.9 < 0.005 < 0.005 0.06 78.1
Vendor < 0.005 < 0.005 0.05 0.02 < 0.005 < 0.005 0.02 0.02 < 0.005 < 0.005 0.01 50.5 50.5 < 0.005 0.01 0.04 52.6
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.05 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 12.9 12.9 < 0.005 < 0.005 0.01 12.9
Vendor < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 8.36 8.36 < 0.005 < 0.005 0.01 8.71
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.11. Paving (2030) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
Daily,
Summer
(Max)
TOG
ROG
NOx
CO
SO2
PM10E
Off-Roa 0.77 0.64 6.28 9.90 0.01 0.22
d
Equipm
ent
Paving 0.00 0.00
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
0.22 0.20 0.20
BCO2
NBCO2
CO2T
CH4
N20
CO2e
1,511 1,511 0.06 0.01 1,516
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.77 0.64 6.28 9.90 0.01 0.22
d
Equipm
ent
Paving 0.00 0.00
0.22 0.20 0.20
1,511 1,511 0.06 0.01 1,516
16/39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.45 0.38 3.71 5.85 0.01 0.13 0.13 0.12 0.12 893 893 0.04 0.01 896
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.08 0.07 0.68 1.07 < 0.005 0.02 0.02 0.02 0.02 148 148 0.01 < 0.005 - 148
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily,
Summer
(Max)
Worker 0.06 0.05 0.05 1.01 0.00 0.00 0.20 0.20 0.00 0.05 0.05 202 202 < 0.005 0.01 0.45 205
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.05 0.04 0.05 0.57 0.00 0.00 0.20 0.20 0.00 0.05 0.05 173 173 < 0.005 0.01 0.01 175
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
17/39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Worker 0.03 0.03 0.03 0.42 0.00 0.00 0.12 0.12 0.00 0.03 0.03 109 109 < 0.005 < 0.005 0.12 110
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.01 < 0.005 0.01 0.08 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 - 18.0 18.0 < 0.005 < 0.005 0.02 18.3
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.13. Paving (2031) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
Onsite
Daily,
Summer
(Max)
Off-Roa
d
Equipm
ent
0.75
ROG
NOx
CO
SO2
0.63
Paving 0.00 0.00
Onsite
truck
Daily,
Winter
(Max)
Off-Roa
d
Equipm
ent
0.00
0.75
0.00
0.63
Paving 0.00 0.00
Onsite
truck
0.00
0.00
6.13
0.00
6.13
0.00
9.88
0.00
9.88
0.00
0.01
0.00
0.01
0.00
PM10E
PM10D
PM 10T
PM2.5E
PM2.5D
PM2.5T
BCO2
0.21
0.00
0.21
0.00
0.00
0.00
0.21
0.00
0.21
0.00
0.19
0.00
0.19
0.00
0.00
0.00
0.19
0.00
0.19
0.00
NBCO2
CO2T
CH4
N20
1,511
0.00
1,511
0.00
1,511
0.00
1,511
0.00
0.06
0.00
0.06
0.00
0.01
0.00
0.01
0.00
CO2e
0.00
0.00
1,516
0.00
1,516
0.00
18/39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Average
Daily
Off-Roa 0.53 0.45 4.38 7.06 0.01 0.15
d
Equipm
ent
Paving 0.00 0.00
0.15 0.14 0.14
1,079 1,079 0.04 0.01 1,083
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.10 0.08 0.80 1.29 < 0.005 0.03
d
Equipm
ent
Paving 0.00 0.00
0.03 0.03 0.03
179 179 0.01 < 0.005 - 179
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.05 0.05 0.04 0.94 0.00 0.00 0.20 0.20 0.00 0.05 0.05 199 199 < 0.005 0.01 0.41 202
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.05 0.04 0.04 0.53 0.00 0.00 0.20 0.20 0.00 0.05 0.05 170 170 < 0.005 0.01 0.01 172
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.03 0.03 0.03 0.47 0.00 0.00 0.14 0.14 0.00 0.03 0.03 130 130 < 0.005 0.01 0.12 131
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
19/39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.01 0.01 0.01 0.09 0.00 0.00 0.03 0.03 0.00 0.01 0.01 21.5 21.5 < 0.005 < 0.005 0.02 21.7
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.15. Paving (2032) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
Onsite
Daily,
Summer
(Max)
Off-Roa
d
Equipm
ent
0.72
ROG
NOx
CO
SO2
0.61
Paving 0.00 0.00
Onsite
truck
Daily,
Winter
(Max)
Off-Roa
d
Equipm
ent
0.00
0.72
0.00
0.61
Paving 0.00 0.00
Onsite
truck
Average
Daily
0.00
0.00
6.00
0.00
6.00
0.00
9.86
0.00
9.86
0.00
0.01
0.00
0.01
0.00
PM10E
PM10D
PM 10T
0.20
0.00
0.20
0.00
0.00
0.00
0.20
0.00
0.20
0.00
PM2.5E
0.18
0.00
0.18
0.00
PM2.5D
PM2.5T
BCO2
0.00
0.00
0.18
0.00
0.18
0.00
NBCO2
CO2T
CH4
N20
1,511
0.00
1,511
0.00
1,511
0.00
1,511
0.00
0.06
0.00
0.06
0.00
0.01
0.00
0.01
0.00
CO2e
0.00
0.00
1,516
0.00
1,516
0.00
20 / 39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Off-Roa 0.52 0.44 4.30 7.06 0.01 0.14
d
Paving 0.00 0.00
0.14 0.13 0.13
1,082 1,082 0.04 0.01 1,086
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.09 0.08 0.78 1.29 < 0.005 0.03
d
Equipm
ent
Paving 0.00 0.00
0.03 0.02 0.02 179 179 0.01 < 0.005 - 180
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.05 0.04 0.04 0.89 0.00 0.00 0.20 0.20 0.00 0.05 0.05 196 196 < 0.005 < 0.005 0.36 197
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.04 0.04 0.04 0.50 0.00 0.00 0.20 0.20 0.00 0.05 0.05 168 168 < 0.005 0.01 0.01 170
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.03 0.03 0.03 0.45 0.00 0.00 0.14 0.14 0.00 0.03 0.03 128 128 < 0.005 0.01 0.11 130
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
21 /39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Worker
Vendor
0.01
0.00
0.01
0.00
< 0.005 0.08
0.00 0.00
0.00
0.00
0.00 0.03 0.03
0.00 0.00 0.00
0.00
0.00
0.01 0.01
0.00 0.00
21.2
0.00
21.2 < 0.005
0.00 0.00
< 0.005
0.00
0.02
0.00
21.5
0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.17. Paving (2033) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
Onsite
Daily,
Summer
(Max)
Off-Roa
d
Equipm
ent
Paving
Onsite
truck
Daily,
Winter
(Max)
Off-Roa
d
Equipm
ent
0.70
0.00
0.00
0.70
ROG
NOx
CO
SO2
0.59
0.00
0.00
0.59
Paving 0.00 0.00
Onsite
truck
Average
Daily
Off-Roa
d
Equipm
ent
0.00
0.14
0.00
0.12
5.91 9.84
0.00 0.00
5.91 9.84
0.00 0.00
1.17 1.94
0.01
0.00
0.01
0.00
< 0.005
PM10E
PM10D
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
0.18 0.18
0.00 0.00 0.00
0.18 0.18
0.00 0.00 0.00
0.04 0.04
0.17
0.00
0.17
0.00
0.03
0.17
0.00 0.00
0.17
0.00 0.00
0.03
NBCO2
CO2T
CH4
N20
1,511
0.00
1,511
0.00
299
1,511 0.06
0.00 0.00
1,511 0.06
0.00 0.00
299 0.01
0.01
0.00
0.01
0.00
< 0.005
CO2e
0.00
0.00
1,516
0.00
1,516
0.00
300
22 / 39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.03 0.02 0.21 0.35 < 0.005 0.01 0.01 0.01 0.01 49.4 49.4 < 0.005 < 0.005 - 49.6
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.05 0.04 0.03 0.84 0.00 0.00 0.20 0.20 0.00 0.05 0.05 194 194 < 0.005 < 0.005 0.32 194
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.04 0.04 0.04 0.47 0.00 0.00 0.20 0.20 0.00 0.05 0.05 165 165 < 0.005 0.01 0.01 168
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.01 0.01 0.01 0.12 0.00 0.00 0.04 0.04 0.00 0.01 0.01 34.9 34.9 < 0.005 < 0.005 0.03 35.0
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.02 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 - 5.78 5.78 < 0.005 < 0.005 < 0.005 5.79
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
23 / 39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.19. Architectural Coating (2030) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
Onsite
Daily,
Summer
(Max)
Off-Roa
d
Equipm
ent
Architect
ural
Coating
s
Onsite
truck
Daily,
Winter
(Max)
Off-Roa
d
Equipm
ent
Architect
ural
Coating
s
Onsite
truck
Average
Daily
0.12
1.40
0.00
0.12
1.40
0.00
ROG
NOx
CO
SO2
0.10
1.40
0.00
0.10
1.40
0.00
0.78
0.00
0.78
0.00
0.00
0.00
< 0.005
0.00
< 0.005
0.00
PM10E
PM10D
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
0.01
0.00
0.01
0.00
0.00
0.00
0.01
0.00
0.01
0.00
0.01
0.00
0.01
0.00
0.00
0.00
0.01
0.00
0.01
0.00
NBCO2
CO2T
CH4
N20
134
0.00
134
0.00
134
0.00
134
0.00
0.01
0.00
0.01
0.00
< 0.005
0.00
< 0.005
0.00
CO2e
0.00
0.00
134
0.00
134
0.00
24/39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Off-Roa 0.07 0.06 0.46 0.65 < 0.005 0.01
d
Architect 0.83 0.83
ural
Coating
s
0.01 0.01 0.01 78.9 78.9 < 0.005 < 0.005 - 79.2
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.01 0.01 0.08 0.12 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 13.1 13.1 < 0.005 < 0.005 - 13.1
d
Equipm
ent
Architect 0.15
ural
Coating
s
0.15
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.03 0.02 0.02 0.45 0.00 0.00 0.09 0.09 0.00 0.02 0.02 90.4 90.4 < 0.005 < 0.005 0.20 91.5
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.02 0.02 0.02 0.25 0.00 0.00 0.09 0.09 0.00 0.02 0.02 77.1 77.1 < 0.005 < 0.005 0.01 78.0
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.01 0.01 0.01 0.19 0.00 0.00 0.05 0.05 0.00 0.01 0.01 48.6 48.6 < 0.005 < 0.005 0.05 49.3
25 / 39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.03 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 - 8.05 8.05 < 0.005 < 0.005 0.01 8.16
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.21. Architectural Coating (2031) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
Daily,
Summer
(Max)
TOG
ROG
NOx
CO
SO2
PM10E
Off-Roa 0.12 0.10 0.78 1.10 < 0.005 0.01
d
Equipm
ent
Architect 1.40 1.40
ural
Coating
s
PM10D
PM 10T
PM2.5E
PM2.5D
PM2.5T
0.01 0.01 0.01
BCO2
NBCO2
CO2T
CH4
N20
CO2e
134 134 0.01 < 0.005 - 134
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.12 0.10 0.78 1.10 < 0.005 0.01
d
Equipm
ent
0.01 0.01 0.01
134 134 0.01 < 0.005 - 134
26 / 39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Architect 1.40 1.40
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.08 0.07 0.55 0.79 < 0.005 0.01 0.01 0.01 0.01 95.4 95.4 < 0.005 < 0.005 - 95.7
d
Equipm
ent
Architect 1.00 1.00
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.02 0.01 0.10 0.14 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 15.8 15.8 < 0.005 < 0.005 - 15.8
d
Equipm
ent
Architect 0.18 0.18
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily,
Summer
(Max)
Worker 0.02 0.02 0.02 0.42 0.00 0.00 0.09 0.09 0.00 0.02 0.02 88.9 88.9 < 0.005 < 0.005 0.18 90.1
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
27/39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Daily,
Winter
(Max)
Worker 0.02 0.02 0.02 0.24 0.00 0.00 0.09 0.09 0.00 0.02 0.02 75.9 75.9 < 0.005 < 0.005 < 0.005 76.8
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.02 0.01 0.01 0.21 0.00 0.00 0.06 0.06 0.00 0.01 0.01 57.9 57.9 < 0.005 < 0.005 0.06 58.6
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.04 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 - 9.58 9.58 < 0.005 < 0.005 0.01 9.70
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.23. Architectural Coating (2032) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM1OD
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Onsite
Daily,
Summer
(Max)
- - - - - - - - - - - - - - - - -
Off-Roa 0.11 0.09 0.77 1.10 < 0.005 0.01
d
Equipm
ent
Architect 1.40 1.40
ural
Coating
s
0.01 0.01 0.01
134 134 0.01 < 0.005 - 134
28 / 39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.11 0.09 0.77 1.10 < 0.005 0.01 0.01 0.01 0.01 134 134 0.01 < 0.005 - 134
d
Equipm
ent
Architect 1.40 1.40
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.08 0.07 0.55 0.79 < 0.005 0.01 0.01 0.01 0.01 95.6 95.6 < 0.005 < 0.005 - 95.9
d
Equipm
ent
Architect 1.00 1.00
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.01 0.01 0.10 0.14 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 15.8 15.8 < 0.005 < 0.005 - 15.9
d
Equipm
ent
Architect 0.18 0.18
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
29 / 39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Offsite
Daily, -
Summer
(Max)
Worker 0.02 0.02 0.02 0.40 0.00 0.00 0.09 0.09 0.00 0.02 0.02 87.7 87.7 < 0.005 < 0.005 0.16 88.0
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.02 0.02 0.02 0.22 0.00 0.00 0.09 0.09 0.00 0.02 0.02 74.8 74.8 < 0.005 < 0.005 < 0.005 75.8
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.01 0.01 0.01 0.20 0.00 0.00 0.06 0.06 0.00 0.01 0.01 57.2 57.2 < 0.005 < 0.005 0.05 58.0
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.04 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 - 9.47 9.47 < 0.005 < 0.005 0.01 9.60
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.25. Architectural Coating (2033) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Onsite
Daily, -
Summer
(Max)
30 / 39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Off-Roa 0.11 0.09 0.76 1.10 < 0.005 0.01
d
Architect 1.40 1.40
ural
Coating
s
0.01 0.01 0.01
134 134 0.01 < 0.005 - 134
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.11 0.09 0.76 1.10 < 0.005 0.01
d
Equipm
ent
Architect 1.40 1.40
ural
Coating
s
0.01 0.01 0.01 134 134 0.01 < 0.005 - 134
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.02 0.02 0.15 0.22 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 26.4 26.4 < 0.005 < 0.005 - 26.5
d
Equipm
ent
Architect 0.28 0.28
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa < 0.005 < 0.005 0.03 0.04 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 4.37 4.37 < 0.005 < 0.005 - 4.38
d
Equipm
ent
31 / 39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Architect 0.05 0.05
Coatings
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily,
Summer
(Max)
Worker 0.02 0.02 0.01 0.37 0.00 0.00 0.09 0.09 0.00 0.02 0.02 86.5 86.5 < 0.005 < 0.005 0.14 86.8
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.02 0.02 0.02 0.21 0.00 0.00 0.09 0.09 0.00 0.02 0.02 73.8 73.8 < 0.005 < 0.005 < 0.005 74.8
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker < 0.005 < 0.005 < 0.005 0.05 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 - 15.6 15.6 < 0.005 < 0.005 0.01 15.6
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 - 2.58 2.58 < 0.005 < 0.005 < 0.005 2.59
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
4. Operations Emissions Details
4.10. Soil Carbon Accumulation By Vegetation Type
32 / 39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Vegetati
on
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N2O
CO2e
Daily,
Summer
(Max)
Total
Daily,
Winter
(Max)
Total
Annual
Total
4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Land
Use
Daily,
Summer
(Max)
Total
Daily,
Winter
(Max)
Total
Annual
Total
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N2O
CO2e
33 / 39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Species
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM 10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N2O
CO2e
Daily,
Summer
(Max)
Avoided
Subtotal
Sequest
ered
Subtotal
Remove
d
Subtotal —
Daily,
Winter
(Max)
Avoided
Subtotal
Sequest
ered
Subtotal
Remove
d
Subtotal
Annual
Avoided
Subtotal
Sequest
ered
Subtotal
34/39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Remove -
Subtotal -
5. Activity Data
5.1. Construction Schedule
Phase Name
Phase Type
Start Date
End Date
Days Per Week
Work Days per Phase
Phase Description
Grading Grading
Building Construction Building Construction
Paving Paving
Architectural Coating Architectural Coating
5.2. Off -Road Equipment
5.2.1. Unmitigated
1 /1 /2030
3/5/2030
3/5/2030
3/5/2030
3/4/2030
4/11/2033
4/11/2033
4/11/2033
5.00
5.00
5.00
5.00
45.0
810
810
810
Phase Name
Equipment Type
Fuel Type
Engine Tier
Number per Day
Hours Per Day
Horsepower
Load Factor
Grading
Grading
Grading
Grading
Grading
Building Construction
Building Construction
Building Construction
Building Construction
Excavators
Graders
Rubber Tired Dozers
Tractors/Loaders/Back
hoes
Scrapers
Cranes
Forklifts
Generator Sets
Tractors/Loaders/Back
hoes
Diesel
Diesel
Diesel
Diesel
Diesel
Diesel
Diesel
Diesel
Diesel
Average
Average
Average
Average
Average
Average
Average
Average
Average
2.00
1.00
1.00
2.00
2.00
1.00
3.00
1.00
3.00
8.00
8.00
8.00
8.00
8.00
7.00
8.00
8.00
7.00
36.0
148
367
84.0
423
367
82.0
14.0
84.0
0.38
0.41
0.40
0.37
0.48
0.29
0.20
0.74
0.37
35 / 39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Building Construction Welders Diesel Average 1.00 8.00 46.0 0.45
Paving Pavers Diesel Average 2.00 8.00 81.0 0.42
Paving Paving Equipment Diesel Average 2.00 8.00 89.0 0.36
Paving Rollers Diesel Average 2.00 8.00 36.0 0.38
Architectural Coating Air Compressors Diesel Average 1.00 6.00 37.0 0.48
5.3. Construction Vehicles
5.3.1. Unmitigated
Phase Name
Trip Type
One -Way Trips per Day
Miles per Trip
Vehicle Mix
Grading
Grading
Grading
Grading
Grading
Building Construction
Building Construction
Building Construction
Building Construction
Building Construction
Paving
Paving
Paving
Paving
Paving
Architectural Coating
Architectural Coating
Architectural Coating
Worker
Vendor
Hauling
Onsite truck
Worker
Vendor
Hauling
Onsite truck
Worker
Vendor
Hauling
Onsite truck
Worker
Vendor
20.0
0.00
18.5
10.2
20.0
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
HHDT
33.5 18.5 LDA,LDT1,LDT2
9.94 10.2 HHDT,MHDT
0.00 20.0 HHDT
HHDT
15.0
0.00
18.5 LDA,LDT1,LDT2
10.2 HHDT,MHDT
20.0 HHDT
HHDT
6.70 18.5
10.2
LDA,LDT1,LDT2
HHDT,MHDT
36 / 39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Architectural Coating
Architectural Coating
Hauling 0.00
Onsite truck
20.0
HHDT
HHDT
5.4. Vehicles
5.4.1. Construction Vehicle Control Strategies
Control Strategies Applied
Water unpaved roads twice daily
Limit vehicle speeds on unpaved roads to 25 mph
Sweep paved roads once per month
5.5. Architectural Coatings
Phase Name
Architectural Coating
5.6. Dust Mitigation
Residential Interior Area
Coated (sq ft)
367,234
5.6.1. Construction Earthmoving Activities
Phase Name
Grading
Paving
Material Imported (cy)
0.00
PM10 Reduction
55%
44%
9%
Residential Exterior Area
Coated (sq ft)
122,411
Material Exported (cy)
0.00
5.6.2. Construction Earthmoving Control Strategies
Control Strategies Applied
Water Exposed Area
Water Demolished Area
Frequency (per day)
3
2
Non -Residential Interior Area
Coated (sq ft)
0.00
Acres Graded (acres)
135
0.00
PM2.5 Reduction
55%
44%
9%
Non -Residential Exterior Area
Coated (sq ft)
0.00
Material Demolished (sq. ft.)
0.00
0.00
PM10 Reduction
74%
36%
Parking Area Coated (sq ft)
Acres Paved (acres)
1.02
PM2.5 Reduction
74%
36%
37/39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
5.7. Construction Paving
Land Use
Single Family Housing
Area Paved (acres)
1.02
5.8. Construction Electricity Consumption and Emissions Factors
kWh per Year and Emission Factor (Ib/MWh)
Year
2030
2031
2032
2033
5.18. Vegetation
5.18.1. Land Use Change
5.18.1.1. Unmitigated
kWh per Year
0.00
0.00
0.00
0.00
CO2
457
457
457
457
% Asphalt
0%
CH4
0.03
0.03
0.03
0.03
N2O
< 0.005
< 0.005
< 0.005
< 0.005
Vegetation Land Use Type
Vegetation Soil Type
Initial Acres
Final Acres
5.18.1. Biomass Cover Type
5.18.1.1. Unmitigated
Biomass Cover Type
Initial Acres
Final Acres
5.18.2. Sequestration
5.18.2.1. Unmitigated
38 / 39
SilverRock Resort Proposed Project Construction Phase 1 (Planning Area 7) Custom Report, 7/18/2025
Tree Type
Number
Electricity Saved (kWh/year)
Natural Gas Saved (btu/year)
8. User Changes to Default Data
Screen
Justification
Land Use
Construction: Construction Phases
Planning Area 7 includes 93 single family homes.
Assumed 10% of land use is landscaped.
Construction estimated to take place from 2030 to April 2033.
Building construction, paving, and architectural coating to occur intermittently as homes are
constructed.
39 / 39
A
APPENDIX A.5
Proposed Project Construction
(Planning Area 8)
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
SilverRock Resort Proposed Project Construction Phase 2 (Planning
Area 8) Custom Report
Table of Contents
1. Basic Project Information
1.1. Basic Project Information
1.2. Land Use Types
1.3. User -Selected Emission Reduction Measures by Emissions Sector
2. Emissions Summary
2.1. Construction Emissions Compared Against Thresholds
2.2. Construction Emissions by Year, Unmitigated
3. Construction Emissions Details
3.1. Grading (2035) - Unmitigated
3.3. Grading (2036) - Unmitigated
3.5. Building Construction (2036) - Unmitigated
3.7. Building Construction (2037) - Unmitigated
3.9. Building Construction (2038) - Unmitigated
3.11. Building Construction (2039) - Unmitigated
1 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
3.13. Building Construction (2040) - Unmitigated
3.15. Building Construction (2041) - Unmitigated
3.17. Building Construction (2042) - Unmitigated
3.19. Building Construction (2043) - Unmitigated
3.21. Building Construction (2044) - Unmitigated
3.23. Building Construction (2045) - Unmitigated
3.25. Paving (2036) - Unmitigated
3.27. Paving (2037) - Unmitigated
3.29. Paving (2038) - Unmitigated
3.31. Paving (2039) - Unmitigated
3.33. Paving (2040) - Unmitigated
3.35. Paving (2041) - Unmitigated
3.37. Paving (2042) - Unmitigated
3.39. Paving (2043) - Unmitigated
3.41. Paving (2044) - Unmitigated
3.43. Paving (2045) - Unmitigated
3.45. Architectural Coating (2036) - Unmitigated
3.47. Architectural Coating (2037) - Unmitigated
2/79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
3.49. Architectural Coating (2038) - Unmitigated
3.51. Architectural Coating (2039) - Unmitigated
3.53. Architectural Coating (2040) - Unmitigated
3.55. Architectural Coating (2041) - Unmitigated
3.57. Architectural Coating (2042) - Unmitigated
3.59. Architectural Coating (2043) - Unmitigated
3.61. Architectural Coating (2044) - Unmitigated
3.63. Architectural Coating (2045) - Unmitigated
4. Operations Emissions Details
4.10. Soil Carbon Accumulation By Vegetation Type
4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated
4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated
4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated
5. Activity Data
5.1. Construction Schedule
5.2. Off -Road Equipment
5.2.1. Unmitigated
5.3. Construction Vehicles
3/79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
5.3.1. Unmitigated
5.4. Vehicles
5.4.1. Construction Vehicle Control Strategies
5.5. Architectural Coatings
5.6. Dust Mitigation
5.6.1. Construction Earthmoving Activities
5.6.2. Construction Earthmoving Control Strategies
5.7. Construction Paving
5.8. Construction Electricity Consumption and Emissions Factors
5.18. Vegetation
5.18.1. Land Use Change
5.18.1.1. Unmitigated
5.18.1. Biomass Cover Type
5.18.1.1. Unmitigated
5.18.2. Sequestration
5.18.2.1. Unmitigated
8. User Changes to Default Data
4/79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
1. Basic Project Information
1.1. Basic Project Information
Data Field
Value
Project Name
Construction Start Date
Lead Agency
Land Use Scale
Analysis Level for Defaults
Windspeed (m/s)
Precipitation (days)
Location
County
City
Air District
Air Basin
TAZ
EDFZ
Electric Utility
Gas Utility
App Version
1.2. Land Use Types
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8)
1 /1 /2035
Project/site
County
3.00
7.60
33.672095298053605, -116.2796035818008
Riverside -Salton Sea
La Quinta
South Coast AQMD
Salton Sea
5651
19
Imperial Irrigation District
Southern California Gas
2022.1.1.29
Land Use Subtype
Size
Unit
Lot Acreage
Building Area (sq ft)
Landscape Area (sq
ft)
Special Landscape
Area (sq ft)
Population
Description
Golf Course
Single Family 253
Housing
18.0
Hole
126
Dwelling Unit 82.1
0.00
493,350
0.00
49,335
0.00
300
817
5/79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
General Office
Building
40.0 1000sgft 0.92 40,000 4,000
1.3. User -Selected Emission Reduction Measures by Emissions Sector
No measures selected
2. Emissions Summary
2.1. Construction Emissions Compared Against Thresholds
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Un/Mit.
Daily,
Summer
(Max)
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM 10T
PM2.5E
PM2.5D
PM2.5T
Unmit. 3.56 3.27 16.9 30.1 0.06 0.62 2.65 3.28 0.57 1.01 1.58
Daily,
Winter
(Max)
BCO2
NBCO2
CO2T
CH4
N2O
CO2e
6,848 6,848 0.27 0.15 2.54 6,872
Unmit. 3.56 3.27 16.9 27.6 0.06 0.62 2.65 3.28 0.57 1.01 1.58 6,812 6,812 0.27 0.15 0.08 6,835
Average
Daily
(Max)
Unmit. 2.52 2.32 12.0 20.1 0.04 0.45 1.90 2.34 0.41 0.72 1.13 4,876 4,876 0.19 0.10 0.78 4,892
Annual
(Max)
Unmit. 0.46 0.42 2.20 3.68 0.01 0.08 0.35 0.43 0.07 0.13 0.21
Exceeds
(Daily
Max)
Threshol 75.0 100 550 150 150 55.0
d
Unmit. No No No No No No
807 807 0.03 0.02 0.13 810
6/79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Exceeds
(Average
Daily)
Threshol
d
Unmit.
75.0
100
550
150
No No No No
150
No
55.0
No
2.2. Construction Emissions by Year, Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Year
Daily -
Summer
(Max)
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N2O
CO2e
2035 2.86 2.41 16.9 25.6 0.06 0.62 2.65 3.28 0.57 1.01 1.58 6,848 6,848 0.27 0.05 0.33 6,872
2036 2.76 2.33 15.9 25.1 0.06 0.58 2.65 3.23 0.53 1.01 1.54 6,846 6,846 0.27 0.05 0.29 6,869
2037 3.56 3.27 14.2 30.1 0.05 0.30 2.11 2.41 0.28 0.51 0.79 6,547 6,547 0.19 0.15 2.54 6,598
2038 3.52 3.24 14.0 29.9 0.05 0.28 2.11 2.40 0.25 0.51 0.76 6,533 6,533 0.19 0.15 2.19 6,584
2039 3.49 3.21 13.8 29.7 0.05 0.27 2.11 2.39 0.25 0.51 0.75 6,506 6,506 0.19 0.15 1.87 6,556
2040 3.46 3.19 13.7 29.5 0.05 0.27 2.11 2.38 0.24 0.51 0.75 6,482 6,482 0.18 0.15 1.59 6,532
2041 3.44 3.11 13.5 29.2 0.05 0.26 2.11 2.37 0.23 0.51 0.74 6,460 6,460 0.18 0.15 1.35 6,510
2042 3.42 3.09 13.4 29.1 0.05 0.25 2.11 2.36 0.22 0.51 0.73 6,441 6,441 0.18 0.14 1.14 6,488
2043 3.40 3.07 13.3 28.9 0.05 0.23 2.11 2.33 0.21 0.51 0.72 6,424 6,424 0.18 0.14 0.96 6,470
2044 3.37 3.05 13.2 28.8 0.05 0.22 2.11 2.33 0.20 0.51 0.71 6,409 6,409 0.18 0.14 0.81 6,455
2045 3.35 3.03 13.1 28.6 0.05 0.21 2.11 2.31 0.19 0.51 0.70 6,395 6,395 0.18 0.14 0.67 6,442
Daily -
Winter
(Max)
2035 2.86 2.41 16.9 25.2 0.06 0.62 2.65 3.28 0.57 1.01 1.58 6,812 6,812 0.27 0.05 0.01 6,835
2036 3.56 3.27 15.9 27.6 0.06 0.58 2.65 3.23 0.53 1.01 1.54 6,809 6,809 0.27 0.15 0.08 6,833
2037 3.51 3.23 14.3 27.3 0.05 0.30 2.11 2.41 0.28 0.51 0.79 6,296 6,296 0.19 0.15 0.07 6,344
2038 3.48 3.20 14.1 27.2 0.05 0.28 2.11 2.40 0.25 0.51 0.76 6,282 6,282 0.19 0.15 0.06 6,331
7/79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
2039 3.45 3.12 13.9 27.0 0.05 0.27 2.11 2.39 0.25 0.51 0.75 6,257 6,257 0.19 0.15 0.05 6,305
2040 3.43 3.09 13.8 26.9 0.05 0.27 2.11 2.38 0.24 0.51 0.75 6,235 6,235 0.18 0.15 0.04 6,283
2041 3.41 3.08 13.6 26.7 0.05 0.26 2.11 2.37 0.23 0.51 0.74 6,215 6,215 0.18 0.15 0.04 6,263
2042 3.39 3.06 13.5 26.6 0.05 0.25 2.11 2.36 0.22 0.51 0.73 6,197 6,197 0.18 0.14 0.03 6,243
2043 3.37 3.04 13.4 26.5 0.05 0.23 2.11 2.33 0.21 0.51 0.72 6,181 6,181 0.18 0.14 0.02 6,226
2044 3.30 3.03 13.3 26.4 0.05 0.22 2.11 2.33 0.20 0.51 0.71 6,167 6,167 0.18 0.14 0.02 6,212
2045 3.27 3.00 13.2 26.3 0.05 0.21 2.11 2.31 0.19 0.51 0.70 6,154 6,154 0.18 0.14 0.02 6,200
Average
Daily
2035 2.04 1.72 12.0 18.1 0.04 0.45 1.90 2.34 0.41 0.72 1.13 4,876 4,876 0.19 0.04 0.10 4,892
2036 2.11 1.82 11.2 18.3 0.04 0.37 1.81 2.19 0.34 0.64 0.99 4,824 4,824 0.18 0.06 0.27 4,845
2037 2.52 2.32 10.2 20.1 0.03 0.22 1.50 1.71 0.20 0.36 0.56 4,568 4,568 0.13 0.10 0.78 4,603
2038 2.49 2.29 10.0 20.1 0.03 0.20 1.50 1.70 0.18 0.36 0.54 4,558 4,558 0.13 0.10 0.67 4,593
2039 2.47 2.27 9.90 19.9 0.03 0.20 1.50 1.70 0.18 0.36 0.54 4,539 4,539 0.13 0.10 0.58 4,575
2040 2.46 2.22 9.84 19.9 0.03 0.19 1.51 1.70 0.17 0.36 0.53 4,535 4,535 0.13 0.10 0.49 4,570
2041 2.44 2.20 9.68 19.7 0.03 0.18 1.50 1.68 0.16 0.36 0.52 4,508 4,508 0.13 0.10 0.42 4,543
2042 2.43 2.19 9.61 19.6 0.03 0.18 1.50 1.68 0.16 0.36 0.52 4,495 4,495 0.13 0.10 0.35 4,528
2043 2.41 2.18 9.54 19.5 0.03 0.16 1.50 1.66 0.15 0.36 0.51 4,483 4,483 0.13 0.10 0.30 4,516
2044 2.41 2.17 9.50 19.5 0.03 0.16 1.50 1.66 0.15 0.36 0.51 4,485 4,485 0.13 0.10 0.25 4,517
2045 1.61 1.48 6.47 13.3 0.02 0.10 1.03 1.13 0.09 0.25 0.34 3,070 3,070 0.09 0.07 0.14 3,092
Annual
2035 0.37 0.31 2.20 3.30 0.01 0.08 0.35 0.43 0.07 0.13 0.21 807 807 0.03 0.01 0.02 810
2036 0.38 0.33 2.04 3.35 0.01 0.07 0.33 0.40 0.06 0.12 0.18 799 799 0.03 0.01 0.05 802
2037 0.46 0.42 1.86 3.68 0.01 0.04 0.27 0.31 0.04 0.07 0.10 756 756 0.02 0.02 0.13 762
2038 0.45 0.42 1.83 3.66 0.01 0.04 0.27 0.31 0.03 0.07 0.10 755 755 0.02 0.02 0.11 760
2039 0.45 0.41 1.81 3.63 0.01 0.04 0.27 0.31 0.03 0.07 0.10 752 752 0.02 0.02 0.10 757
2040 0.45 0.41 1.80 3.62 0.01 0.03 0.27 0.31 0.03 0.07 0.10 751 751 0.02 0.02 0.08 757
2041 0.45 0.40 1.77 3.59 0.01 0.03 0.27 0.31 0.03 0.07 0.10 746 746 0.02 0.02 0.07 752
2042 0.44 0.40 1.75 3.57 0.01 0.03 0.27 0.31 0.03 0.07 0.09 744 744 0.02 0.02 0.06 750
8/79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
2043 0.44 0.40 1.74 3.55 0.01 0.03 0.27 0.30 0.03 0.07 0.09 742 742 0.02 0.02 0.05 748
2044 0.44 0.40 1.73 3.55 0.01 0.03 0.27 0.30 0.03 0.07 0.09 743 743 0.02 0.02 0.04 748
2045 0.29 0.27 1.18 2.43 < 0.005 0.02 0.19 0.21 0.02 0.05 0.06 508 508 0.01 0.01 0.02 512
3. Construction Emissions Details
3.1. Grading (2035) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
TOG
Daily, -
Summer
(Max)
ROG
NOx
CO
SO2
PM10E
Off-Roa 2.81 2.36 16.8 24.6 0.06 0.62
d
Equipm
ent
Dust
From
Material
Movement
PM1OD
PM1OT
PM2.5E
PM2.5D
PM2.5T
0.62 0.57 0.57
2.39 2.39 0.95 0.95
BCO2
NBCO2
CO2T
CH4
N20
CO2e
6,596 6,596 0.27 0.05 6,619
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 2.81 2.36 16.8 24.6 0.06 0.62
d
Equipm
ent
0.62 0.57 0.57
Dust 2.39 2.39 0.95 0.95
From
Material
Movement
6,596 6,596 0.27 0.05 6,619
9/79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 2.01 1.69 12.0 17.6 0.04 0.45 0.45 0.41 0.41 4,712 4,712 0.19 0.04 4,728
d
Equipm
ent
Dust 1.71 1.71 0.68 0.68
From
Material
Movement
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.37 0.31 2.19 3.21 0.01 0.08 0.08 0.07 0.07 780 780 0.03 0.01 783
d
Equipm
ent
Dust 0.31 0.31 0.12 0.12
From
Material
Movement
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.05 0.05 0.04 1.00 0.00 0.00 0.26 0.26 0.00 0.06 0.06 252 252 < 0.005 < 0.005 0.33 253
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.05 0.05 0.04 0.56 0.00 0.00 0.26 0.26 0.00 0.06 0.06 215 215 < 0.005 < 0.005 0.01 216
10/79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.03 0.03 0.03 0.51 0.00 0.00 0.19 0.19 0.00 0.04 0.04 164 164 < 0.005 < 0.005 0.10 165
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.01 0.01 0.01 0.09 0.00 0.00 0.03 0.03 0.00 0.01 0.01 27.2 27.2 < 0.005 < 0.005 0.02 27.3
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.3. Grading (2036) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
Daily,
Summer
(Max)
Off-Roa
d
Equipm
ent
TOG
2.71
Dust
From
Material
Movement
Onsite
truck
Daily,
Winter
(Max)
0.00
ROG
2.28
0.00
NOx
15.9
0.00
CO
24.1
0.00
SO2
0.06
0.00
PM10E
0.58
0.00
PM1OD
2.39
0.00
PM1OT
0.58
2.39
0.00
PM2.5E
0.53
0.00
PM2.5D
0.95
0.00
PM2.5T
0.53
0.95
0.00
BCO2
NBCO2
6,596
0.00
CO2T
6,596
0.00
CH4
0.27
0.00
N20
0.05
0.00
0.00
CO2e
6,619
0.00
11 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Off-Roa 2.71 2.28 15.9 24.1 0.06 0.58 0.58 0.53 0.53 6,596 6,596 0.27 0.05 6,619
Equipment
Dust - 2.39 2.39 0.95 0.95
From
Material
Movement
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 1.51 1.27 8.81 13.4 0.03 0.32 0.32 0.30 0.30 3,666 3,666 0.15 0.03 3,679
d
Equipm
ent
Dust 1.33 1.33 0.53 0.53
From
Material
Movement
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.28 0.23 1.61 2.44 0.01 0.06 0.06 0.05 0.05 607 607 0.02 < 0.005 - 609
d
Equipm
ent
Dust 0.24 0.24 0.10 0.10
From
Material
Movement
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.05 0.05 0.03 0.95 0.00 0.00 0.26 0.26 0.00 0.06 0.06 250 250 < 0.005 < 0.005 0.29 250
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12/79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.04 0.04 0.04 0.54 0.00 0.00 0.26 0.26 0.00 0.06 0.06 213 213 < 0.005 < 0.005 0.01 214
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.03 0.03 0.02 0.37 0.00 0.00 0.14 0.14 0.00 0.03 0.03 127 127 < 0.005 < 0.005 0.07 127
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.07 0.00 0.00 0.03 0.03 0.00 0.01 0.01 21.0 21.0 < 0.005 < 0.005 0.01 21.0
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.5. Building Construction (2036) - Unmitigated
Criteria Pollutants (Ib/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
TOG
Daily,
Summer
(Max)
Daily,
Winter
(Max)
Off-Roa
d
Equipm
ent
0.99
ROG
0.83
NOx
7.12
CO
12.6
SO2
0.02
PM10E
0.17
PM10D
PM1OT
0.17
PM2.5E
0.16
PM2.5D
PM2.5T
0.16
BCO2
NBCO2
2,397
CO2T
2,397
CH4
0.10
N20
0.02
CO2e
2,405
13/79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.16 0.13 1.14 2.02 < 0.005 0.03
d
Equipm
ent
0.03 0.02 0.02 385 385 0.02 < 0.005 - 386
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.03 0.02 0.21 0.37 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 63.7 63.7 < 0.005 < 0.005 - 63.9
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Daily, -
Winter
(Max)
Worker 0.23 0.23 0.22 2.80 0.00 0.00 1.36 1.36 0.00 0.32 0.32 1,108 1,108 0.01 0.01 0.04 1,110
Vendor 0.03 0.03 0.84 0.36 0.01 0.02 0.29 0.30 0.02 0.08 0.09 797 797 0.01 0.11 0.02 830
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.04 0.04 0.03 0.56 0.00 0.00 0.22 0.22 0.00 0.05 0.05 190 190 < 0.005 < 0.005 0.10 190
Vendor 0.01 < 0.005 0.13 0.06 < 0.005 < 0.005 0.05 0.05 < 0.005 0.01 0.02 128 128 < 0.005 0.02 0.07 133
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.01 0.01 0.01 0.10 0.00 0.00 0.04 0.04 0.00 0.01 0.01 31.4 31.4 < 0.005 < 0.005 0.02 31.5
14/79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Vendor < 0.005 < 0.005 0.02 0.01 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 - 21.1 21.1 < 0.005 < 0.005 0.01 22.1
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
3.7. Building Construction (2037) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Onsite
Daily,
Summer
(Max)
Off-Roa 0.98 0.82 6.99 12.5 0.02 0.16
d
Equipm
ent
0.16 0.14 0.14
2,397 2,397 0.10 0.02 2,405
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.98 0.82 6.99 12.5 0.02 0.16
d
Equipm
ent
0.16 0.14 0.14
2,397 2,397 0.10 0.02 2,405
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.70 0.58 4.99 8.93 0.02 0.11
d
Equipm
ent
0.11 0.10 0.10
1,712 1,712 0.07 0.01 1,718
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
15/79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Off-Roa 0.13 0.11 0.91 1.63 < 0.005 0.02 0.02 0.02 0.02 283 283 0.01 < 0.005 - 284
Equipment
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.25 0.25 0.17 4.76 0.00 0.00 1.36 1.36 0.00 0.32 0.32 1,286 1,286 0.01 0.01 1.29 1,289
Vendor 0.04 0.03 0.77 0.33 0.01 0.02 0.28 0.30 0.02 0.08 0.09 777 777 0.01 0.10 0.80 810
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.22 0.22 0.17 2.70 0.00 0.00 1.36 1.36 0.00 0.32 0.32 1,098 1,098 0.01 0.01 0.03 1,101
Vendor 0.03 0.03 0.83 0.35 0.01 0.02 0.28 0.30 0.02 0.08 0.09 778 778 0.01 0.10 0.02 810
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.16 0.16 0.12 2.39 0.00 0.00 0.97 0.97 0.00 0.23 0.23 837 837 0.01 < 0.005 0.40 839
Vendor 0.02 0.02 0.58 0.24 0.01 0.01 0.20 0.21 0.01 0.06 0.07 556 556 0.01 0.07 0.25 578
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.03 0.03 0.02 0.44 0.00 0.00 0.18 0.18 0.00 0.04 0.04 139 139 < 0.005 < 0.005 0.07 139
Vendor < 0.005 < 0.005 0.11 0.04 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 92.0 92.0 < 0.005 0.01 0.04 95.7
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.9. Building Construction (2038) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Onsite
16/79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Daily,
Summer
(Max)
Off-Roa 0.97 0.81 6.89 12.5 0.02 0.15 0.15 0.14 0.14 2,397 2,397 0.10 0.02 2,405
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.97 0.81 6.89 12.5 0.02 0.15 0.15 0.14 0.14 2,397 2,397 0.10 0.02 2,405
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.69 0.58 4.92 8.90 0.02 0.11 0.11 0.10 0.10 1,712 1,712 0.07 0.01 1,718
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.13 0.11 0.90 1.62 < 0.005 0.02 0.02 0.02 0.02 283 283 0.01 < 0.005 - 284
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily,
Summer
(Max)
17/79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Worker 0.24 0.24 0.17 4.66 0.00 0.00 1.36 1.36 0.00 0.32 0.32 1,286 1,286 0.01 0.01 1.13 1,290
Vendor 0.03 0.03 0.78 0.33 0.01 0.02 0.29 0.30 0.01 0.08 0.09 763 763 0.01 0.10 0.67 795
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.22 0.21 0.17 2.64 0.00 0.00 1.36 1.36 0.00 0.32 0.32 1,099 1,099 0.01 0.01 0.03 1,101
Vendor 0.03 0.03 0.84 0.35 0.01 0.02 0.29 0.30 0.01 0.08 0.09 764 764 0.01 0.10 0.02 796
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.16 0.15 0.12 2.35 0.00 0.00 0.97 0.97 0.00 0.23 0.23 838 838 0.01 < 0.005 0.35 840
Vendor 0.02 0.02 0.58 0.24 0.01 0.01 0.20 0.22 0.01 0.06 0.06 546 546 0.01 0.07 0.21 568
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.03 0.03 0.02 0.43 0.00 0.00 0.18 0.18 0.00 0.04 0.04 139 139 < 0.005 < 0.005 0.06 139
Vendor < 0.005 < 0.005 0.11 0.04 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 90.3 90.3 < 0.005 0.01 0.03 94.1
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.11. Building Construction (2039) - Unmitigated
Criteria Pollutants (Ib/day for daily, ton/yr for annual) and GHGs (Ib/day for daily, MT/yr for annual)
Location
Onsite
Daily,
Summer
(Max)
Off-Roa
d
Equipm
ent
TOG
0.96
ROG
0.80
NOx
6.78
CO
12.4
SO2
0.02
PM10E
0.15
PM10D
PM10T
0.15
PM2.5E
0.13
PM2.5D
PM2.5T
0.13
BCO2
NBCO2
2,397
CO2T
2,397
CH4
0.10
N20
0.02
CO2e
2,405
18/79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.96 0.80 6.78 12.4 0.02 0.15 0.15 0.13 0.13 2,397 2,397 0.10 0.02 2,405
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.69 0.57 4.84 8.86 0.02 0.10 0.10 0.10 0.10 1,712 1,712 0.07 0.01 1,718
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.13 0.10 0.88 1.62 < 0.005 0.02 0.02 0.02 0.02 283 283 0.01 < 0.005 - 284
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.23 0.23 0.17 4.52 0.00 0.00 1.36 1.36 0.00 0.32 0.32 1,277 1,277 0.01 0.01 0.98 1,280
Vendor 0.04 0.03 0.77 0.33 0.01 0.02 0.29 0.30 0.01 0.08 0.09 749 749 0.01 0.10 0.56 780
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
19/79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Worker 0.21 0.16 0.17 2.54 0.00 0.00 1.36 1.36 0.00 0.32 0.32 1,091 1,091 0.01 0.01 0.03 1,093
Vendor 0.03 0.03 0.83 0.35 0.01 0.02 0.29 0.30 0.01 0.08 0.09 750 750 0.01 0.10 0.01 781
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.15 0.15 0.12 2.28 0.00 0.00 0.97 0.97 0.00 0.23 0.23 832 832 0.01 < 0.005 0.30 834
Vendor 0.02 0.02 0.57 0.24 0.01 0.01 0.20 0.22 0.01 0.06 0.06 535 535 0.01 0.07 0.17 558
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.03 0.03 0.02 0.42 0.00 0.00 0.18 0.18 0.00 0.04 0.04 138 138 < 0.005 < 0.005 0.05 138
Vendor < 0.005 < 0.005 0.10 0.04 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 88.6 88.6 < 0.005 0.01 0.03 92.3
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.13. Building Construction (2040) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
Daily,
Summer
(Max)
TOG
ROG
NOx
CO
SO2
PM10E
Off-Roa 0.96 0.80 6.71 12.4 0.02 0.14
d
Equipm
ent
PM10D
PM1OT
PM2.5E
PM2.5D
PM2.5T
0.14 0.13 0.13
BCO2
NBCO2
CO2T
CH4
N20
CO2e
2,397 2,397 0.10 0.02 2,405
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
20 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Off-Roa 0.96 0.80 6.71 12.4 0.02 0.14
d
Equipm
ent
0.14 0.13 0.13
2,397 2,397 0.10 0.02 2,405
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.68 0.57 4.80 8.87 0.02 0.10
d
Equipm
ent
0.10 0.09 0.09
1,717 1,717 0.07 0.01 1,723
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.12 0.10 0.88 1.62 < 0.005 0.02 0.02 0.02 0.02 284 284 0.01 < 0.005 - 285
d
Equipm
ent
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily,
Summer
(Max)
Worker 0.22 0.22 0.17 4.38 0.00 0.00 1.36 1.36 0.00 0.32 0.32 1,269 1,269 0.01 0.01 0.84 1,272
Vendor 0.03 0.03 0.76 0.33 0.01 0.02 0.29 0.30 0.01 0.08 0.09 735 735 < 0.005 0.10 0.46 767
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.20 0.15 0.17 2.44 0.00 0.00 1.36 1.36 0.00 0.32 0.32 1,084 1,084 0.01 0.01 0.02 1,086
Vendor 0.03 0.03 0.82 0.35 0.01 0.02 0.29 0.30 0.01 0.08 0.09 736 736 < 0.005 0.10 0.01 768
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
21 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Average
Daily
Worker 0.15 0.11 0.12 2.22 0.00 0.00 0.97 0.97 0.00 0.23 0.23 829 829 0.01 < 0.005 0.26 831
Vendor 0.02 0.02 0.57 0.24 0.01 0.01 0.21 0.22 0.01 0.06 0.06 527 527 < 0.005 0.07 0.14 549
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.03 0.02 0.02 0.40 0.00 0.00 0.18 0.18 0.00 0.04 0.04 137 137 < 0.005 < 0.005 0.04 138
Vendor < 0.005 < 0.005 0.10 0.04 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 87.3 87.3 < 0.005 0.01 0.02 91.0
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.15. Building Construction (2041) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
Daily,
Summer
(Max)
Off-Roa
d
Equipm
ent
Onsite
truck
Daily,
Winter
(Max)
Off-Roa
d
Equipm
ent
Onsite
truck
TOG
0.95
0.00
0.95
0.00
ROG
0.80
0.00
0.80
0.00
NOx
6.65
0.00
6.65
0.00
CO
12.3
0.00
12.3
0.00
SO2
0.02
0.00
0.02
0.00
PM10E
0.14
0.00
0.14
0.00
PM10D
0.00
0.00
PM10T
0.14
0.00
0.14
0.00
PM2.5E
0.13
0.00
0.13
0.00
PM2.5D
0.00
0.00
PM2.5T
0.13
0.00
0.13
0.00
BCO2
NBCO2
2,397
0.00
2,397
0.00
CO2T
2,397
0.00
2,397
0.00
CH4
0.10
0.00
0.10
0.00
N20
0.02
0.00
0.02
0.00
0.00
0.00
CO2e
2,405
0.00
2,405
0.00
22 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Average
Daily
Off-Roa 0.68 0.57 4.75 8.81 0.02 0.10
d
Equipm
ent
0.10 0.09 0.09
1,712 1,712 0.07 0.01 1,718
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.12 0.10 0.87 1.61 < 0.005 0.02
d
Equipm
ent
0.02 0.02 0.02
283 283 0.01 < 0.005 - 284
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.21 0.17 0.13 4.24 0.00 0.00 1.36 1.36 0.00 0.32 0.32 1,262 1,262 0.01 0.01 0.73 1,264
Vendor 0.03 0.03 0.75 0.32 0.01 0.02 0.29 0.30 0.01 0.08 0.09 723 723 < 0.005 0.10 0.37 755
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.20 0.15 0.17 2.38 0.00 0.00 1.36 1.36 0.00 0.32 0.32 1,078 1,078 0.01 0.01 0.02 1,080
Vendor 0.03 0.03 0.81 0.34 0.01 0.02 0.29 0.30 0.01 0.08 0.09 725 725 < 0.005 0.10 0.01 756
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.14 0.11 0.09 2.14 0.00 0.00 0.97 0.97 0.00 0.23 0.23 822 822 < 0.005 < 0.005 0.22 824
Vendor 0.02 0.02 0.56 0.24 0.01 0.01 0.20 0.22 0.01 0.06 0.06 517 517 < 0.005 0.07 0.11 539
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
23 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Worker 0.03 0.02 0.02 0.39 0.00 0.00 0.18 0.18 0.00 0.04 0.04 136 136 < 0.005 < 0.005 0.04 136
Vendor < 0.005 < 0.005 0.10 0.04 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 85.6 85.6 < 0.005 0.01 0.02 89.3
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.17. Building Construction (2042) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
Onsite
Daily,
Summer
(Max)
Off-Roa
d
Equipm
ent
Onsite
truck
Daily,
Winter
(Max)
Off-Roa
d
Equipm
ent
Onsite
truck
Average
Daily
Off-Roa
d
Equipm
ent
Onsite
truck
0.95
0.00
0.95
0.00
0.68
0.00
ROG
NOx
CO
SO2
0.79
0.00
0.79
0.00
0.57
0.00
6.60
0.00
6.60
0.00
4.72
0.00
12.3
0.00
12.3
0.00
8.81
0.00
0.02
0.00
0.02
0.00
0.02
0.00
PM10E
PM10D
PM1OT
0.13
0.00
0.13
0.00
0.10
0.00
0.00
0.00
0.00
0.13
0.00
0.13
0.00
0.10
0.00
PM2.5E
0.12
0.00
0.12
0.00
0.09
0.00
PM2.5D
PM2.5T
BCO2
0.00
0.00
0.00
0.12
0.00
0.12
0.00
0.09
0.00
NBCO2
CO2T
CH4
N20
2,397
0.00
2,397
0.00
1,712
0.00
2,397
0.00
2,397
0.00
1,712
0.00
0.10
0.00
0.10
0.00
0.07
0.00
0.02
0.00
0.02
0.00
0.01
0.00
CO2e
0.00
0.00
0.00
2,405
0.00
2,405
0.00
1,718
0.00
24/79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Annual
Off-Roa 0.12 0.10 0.86 1.61 < 0.005 0.02
d
Equipm
ent
0.02 0.02 0.02
283 283 0.01 < 0.005 - 284
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.20 0.16 0.13 4.15 0.00 0.00 1.36 1.36 0.00 0.32 0.32 1,255 1,255 0.01 0.01 0.62 1,258
Vendor 0.03 0.03 0.74 0.32 0.01 0.02 0.29 0.30 0.01 0.08 0.09 713 713 < 0.005 0.10 0.30 742
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.19 0.14 0.13 2.33 0.00 0.00 1.36 1.36 0.00 0.32 0.32 1,073 1,073 0.01 0.01 0.02 1,075
Vendor 0.03 0.03 0.81 0.34 0.01 0.02 0.29 0.30 0.01 0.08 0.09 714 714 < 0.005 0.10 0.01 743
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.14 0.11 0.09 2.08 0.00 0.00 0.97 0.97 0.00 0.23 0.23 818 818 < 0.005 < 0.005 0.19 819
Vendor 0.02 0.02 0.56 0.24 0.01 0.01 0.20 0.22 0.01 0.06 0.06 509 509 < 0.005 0.07 0.09 530
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.03 0.02 0.02 0.38 0.00 0.00 0.18 0.18 0.00 0.04 0.04 135 135 < 0.005 < 0.005 0.03 136
Vendor < 0.005 < 0.005 0.10 0.04 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 84.3 84.3 < 0.005 0.01 0.02 87.8
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.19. Building Construction (2043) - Unmitigated
25 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
Onsite
Daily,
Summer
(Max)
Off-Roa
d
Equipm
ent
Onsite
truck
Daily,
Winter
(Max)
Off-Roa
d
Equipm
ent
Onsite
truck
Average
Daily
Off-Roa
d
Equipm
ent
Onsite
truck
0.94
0.00
0.94
0.00
0.67
0.00
Annual -
Off-Roa
d
Equipm
ent
Onsite
truck
0.12
0.00
ROG
NOx
CO
SO2
0.79
0.00
0.79
0.00
0.56
0.00
0.10
0.00
6.55
0.00
6.55
0.00
4.68
0.00
0.85
0.00
12.3
0.00
12.3
0.00
8.77
0.00
1.60
0.00
0.02
0.00
0.02
0.00
0.02
0.00
< 0.005
0.00
PM10E
PM10D
PM 10T
0.13
0.00
0.13
0.00
0.09
0.00
0.02
0.00
0.00
0.00
0.00
0.00
0.13
0.00
0.13
0.00
0.09
0.00
0.02
0.00
PM2.5E
0.12
0.00
0.12
0.00
0.09
0.00
0.02
0.00
PM2.5D
PM2.5T
BCO2
0.00
0.00
0.00
0.00
0.12
0.00
0.12
0.00
0.09
0.00
0.02
0.00
NBCO2
CO2T
CH4
N2O
2,397
0.00
2,397
0.00
1,712
0.00
283
0.00
2,397
0.00
2,397
0.00
1,712
0.00
283
0.00
0.10
0.00
0.10
0.00
0.07
0.00
0.01
0.00
0.02
0.00
0.02
0.00
0.01
0.00
< 0.005
0.00
CO2e
0.00
0.00
0.00
0.00
2,405
0.00
2,405
0.00
1,718
0.00
284
0.00
26 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Offsite
Daily, -
Summer
(Max)
Worker 0.20 0.16 0.13 4.06 0.00 0.00 1.36 1.36 0.00 0.32 0.32 1,249 1,249 0.01 0.01 0.54 1,252
Vendor 0.03 0.03 0.74 0.32 0.01 0.01 0.28 0.29 0.01 0.08 0.09 703 703 < 0.005 0.10 0.24 732
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.19 0.14 0.13 2.28 0.00 0.00 1.36 1.36 0.00 0.32 0.32 1,068 1,068 0.01 0.01 0.01 1,070
Vendor 0.03 0.03 0.80 0.34 0.01 0.01 0.28 0.29 0.01 0.08 0.09 704 704 < 0.005 0.10 0.01 733
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.13 0.10 0.09 2.04 0.00 0.00 0.97 0.97 0.00 0.23 0.23 814 814 < 0.005 < 0.005 0.17 816
Vendor 0.02 0.02 0.55 0.23 0.01 0.01 0.20 0.20 0.01 0.06 0.06 503 503 < 0.005 0.07 0.07 523
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.02 0.02 0.02 0.37 0.00 0.00 0.18 0.18 0.00 0.04 0.04 135 135 < 0.005 < 0.005 0.03 135
Vendor < 0.005 < 0.005 0.10 0.04 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 83.2 83.2 < 0.005 0.01 0.01 86.6
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.21. Building Construction (2044) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Onsite
Daily, -
Summer
(Max)
27 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Off-Roa 0.93 0.78 6.48 12.2 0.02 0.12 0.12 0.11 0.11 2,397 2,397 0.10 0.02 2,405
d
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.93 0.78 6.48 12.2 0.02 0.12
d
Equipm
ent
0.12 0.11 0.11
2,397 2,397 0.10 0.02 2,405
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.67 0.56 4.64 8.76 0.02 0.09
d
Equipm
ent
0.09 0.08 0.08
1,717 1,717 0.07 0.01 1,723
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.12 0.10 0.85 1.60 < 0.005 0.02
d
Equipm
ent
0.02 0.01 0.01 284 284 0.01 < 0.005 - 285
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.20 0.15 0.12 4.01 0.00 0.00 1.36 1.36 0.00 0.32 0.32 1,244 1,244 0.01 0.01 0.46 1,247
Vendor 0.03 0.03 0.73 0.32 0.01 0.01 0.28 0.29 0.01 0.08 0.09 695 695 < 0.005 0.10 0.19 724
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
28 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Daily,
Winter
(Max)
Worker 0.14 0.14 0.12 2.23 0.00 0.00 1.36 1.36 0.00 0.32 0.32 1,064 1,064 0.01 0.01 0.01 1,066
Vendor 0.03 0.03 0.79 0.34 0.01 0.01 0.28 0.29 0.01 0.08 0.09 696 696 < 0.005 0.10 < 0.005 725
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.13 0.10 0.09 2.01 0.00 0.00 0.97 0.97 0.00 0.23 0.23 813 813 < 0.005 < 0.005 0.14 814
Vendor 0.02 0.02 0.56 0.24 0.01 0.01 0.20 0.21 0.01 0.06 0.06 498 498 < 0.005 0.07 0.06 519
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.02 0.02 0.02 0.37 0.00 0.00 0.18 0.18 0.00 0.04 0.04 135 135 < 0.005 < 0.005 0.02 135
Vendor < 0.005 < 0.005 0.10 0.04 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 82.4 82.4 < 0.005 0.01 0.01 85.9
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.23. Building Construction (2045) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM1OD
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Onsite
Daily,
Summer
(Max)
- - - - - - - - - - - - - -
Off-Roa 0.92 0.77 6.42 12.2 0.02 0.12
d
Equipm
ent
0.12 0.11 0.11
2,397 2,397 0.10 0.02 2,405
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
29 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Off-Roa 0.92 0.77 6.42 12.2 0.02 0.12 0.12 0.11 0.11 2,397 2,397 0.10 0.02 2,405
Equipment
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.45 0.38 3.15 5.97 0.01 0.06
d
Equipm
ent
0.06 0.05 0.05
1,177 1,177 0.05 0.01 1,181
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.08 0.07 0.58 1.09 < 0.005 0.01
d
Equipm
ent
0.01 0.01 0.01 195 195 0.01 < 0.005 - 196
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.20 0.15 0.12 3.96 0.00 0.00 1.36 1.36 0.00 0.32 0.32 1,240 1,240 0.01 0.01 0.39 1,243
Vendor 0.03 0.03 0.73 0.32 0.01 0.01 0.28 0.29 0.01 0.08 0.09 687 687 < 0.005 0.10 0.15 716
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.14 0.13 0.12 2.22 0.00 0.00 1.36 1.36 0.00 0.32 0.32 1,060 1,060 0.01 0.01 0.01 1,062
Vendor 0.03 0.03 0.79 0.34 0.01 0.01 0.28 0.29 0.01 0.08 0.09 688 688 < 0.005 0.10 < 0.005 717
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
30 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Worker 0.07 0.07 0.06 1.38 0.00 0.00 0.66 0.66 0.00 0.16 0.16 556 556 < 0.005 < 0.005 0.08 556
Vendor 0.02 0.01 0.38 0.16 < 0.005 < 0.005 0.14 0.14 < 0.005 0.04 0.04 338 338 < 0.005 0.05 0.03 352
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.01 0.01 0.01 0.25 0.00 0.00 0.12 0.12 0.00 0.03 0.03 92.0 92.0 < 0.005 < 0.005 0.01 92.1
Vendor < 0.005 < 0.005 0.07 0.03 < 0.005 < 0.005 0.02 0.03 < 0.005 0.01 0.01 55.9 55.9 < 0.005 0.01 0.01 58.3
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.25. Paving (2036) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Onsite
Daily,
Summer
(Max)
Daily,
Winter
(Max)
Off-Roa 0.63 0.53 5.62 9.78 0.01 0.14
d
Equipm
ent
Paving 0.00 0.00
0.14 0.13 0.13
1,511 1,511 0.06 0.01 1,516
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.10 0.09 0.90 1.57 < 0.005 0.02
d
Equipm
ent
Paving 0.00 0.00
0.02 0.02 0.02 242 242 0.01 < 0.005 - 243
31 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.02 0.02 0.16 0.29 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 40.1 40.1 < 0.005 < 0.005 - 40.3
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Daily, -
Winter
(Max)
Worker 0.03 0.03 0.03 0.40 0.00 0.00 0.20 0.20 0.00 0.05 0.05 160 160 < 0.005 < 0.005 0.01 160
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.01 0.01 < 0.005 0.08 0.00 0.00 0.03 0.03 0.00 0.01 0.01 27.4 27.4 < 0.005 < 0.005 0.01 27.5
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 - 4.54 4.54 < 0.005 < 0.005 < 0.005 4.55
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.27. Paving (2037) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
32 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Location
TOG
Onsite
Daily,
Summer
(Max)
Off-Roa
d
Equipm
ent
0.61
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N2O
0.51
Paving 0.00 0.00
Onsite
truck
Daily,
Winter
(Max)
Off-Roa
d
Equipm
ent
0.00
0.61
0.00
0.51
Paving 0.00 0.00
Onsite
truck
Average
Daily
Off-Roa
d
Equipm
ent
0.00
0.44
0.00
0.37
Paving 0.00 0.00
Onsite
truck
0.00
Annual -
Off-Roa
d
Equipm
ent
0.08
0.00
0.07
5.50
0.00
5.50
0.00
3.93
0.00
0.72
9.77
0.00
9.77
0.00
6.98
0.00
1.27
0.01
0.00
0.01
0.00
0.01
0.00
< 0.005
0.12
0.00
0.12
0.00
0.09
0.00
0.02
0.00
0.00
0.00
0.12
0.00
0.12
0.00
0.09
0.00
0.02
0.11
0.00
0.11
0.00
0.08
0.00
0.01
0.00
0.00
0.00
0.11
0.00
0.11
0.00
0.08
0.00
0.01
1,511
0.00
1,511
0.00
1,079
0.00
179
1,511
0.00
1,511
0.00
1,079
0.00
179
0.06
0.00
0.06
0.00
0.04
0.00
0.01
0.01
0.00
0.01
0.00
0.01
0.00
< 0.005
CO2e
0.00
0.00
0.00
1,516
0.00
1,516
0.00
1,083
0.00
179
33 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.04 0.04 0.02 0.69 0.00 0.00 0.20 0.20 0.00 0.05 0.05 186 186 < 0.005 < 0.005 0.19 186
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.03 0.03 0.02 0.39 0.00 0.00 0.20 0.20 0.00 0.05 0.05 159 159 < 0.005 < 0.005 < 0.005 159
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.02 0.02 0.02 0.35 0.00 0.00 0.14 0.14 0.00 0.03 0.03 121 121 < 0.005 < 0.005 0.06 121
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.06 0.00 0.00 0.03 0.03 0.00 0.01 0.01 20.0 20.0 < 0.005 < 0.005 0.01 20.1
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.29. Paving (2038) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
34/79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Daily, -
Summer
(Max)
Off-Roa 0.59 0.50 5.38 9.76 0.01 0.11 0.11 0.10 0.10 1,511 1,511 0.06 0.01 1,516
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.59 0.50 5.38 9.76 0.01 0.11 0.11 0.10 0.10 1,511 1,511 0.06 0.01 1,516
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.42 0.36 3.84 6.97 0.01 0.08 0.08 0.07 0.07 1,079 1,079 0.04 0.01 1,083
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.08 0.07 0.70 1.27 < 0.005 0.01 0.01 0.01 0.01 179 179 0.01 < 0.005 - 179
d
Equipm
ent
Paving 0.00 0.00
35 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.03 0.03 0.02 0.67 0.00 0.00 0.20 0.20 0.00 0.05 0.05 186 186 < 0.005 < 0.005 0.16 186
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.03 0.03 0.02 0.38 0.00 0.00 0.20 0.20 0.00 0.05 0.05 159 159 < 0.005 < 0.005 < 0.005 159
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.02 0.02 0.02 0.34 0.00 0.00 0.14 0.14 0.00 0.03 0.03 121 121 < 0.005 < 0.005 0.05 121
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.06 0.00 0.00 0.03 0.03 0.00 0.01 0.01 20.0 20.0 < 0.005 < 0.005 0.01 20.1
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.31. Paving (2039) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM 1 OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
36 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Daily, -
Summer
(Max)
Off-Roa 0.58 0.49 5.31 9.75 0.01 0.11 0.11 0.10 0.10 1,511 1,511 0.06 0.01 1,516
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.58 0.49 5.31 9.75 0.01 0.11 0.11 0.10 0.10 1,511 1,511 0.06 0.01 1,516
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.42 0.35 3.79 6.97 0.01 0.08 0.08 0.07 0.07 1,079 1,079 0.04 0.01 1,083
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.08 0.06 0.69 1.27 < 0.005 0.01 0.01 0.01 0.01 179 179 0.01 < 0.005 - 179
d
Equipm
ent
Paving 0.00 0.00
37 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.03 0.03 0.02 0.65 0.00 0.00 0.20 0.20 0.00 0.05 0.05 184 184 < 0.005 < 0.005 0.14 185
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.03 0.02 0.02 0.37 0.00 0.00 0.20 0.20 0.00 0.05 0.05 158 158 < 0.005 < 0.005 < 0.005 158
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.02 0.02 0.02 0.33 0.00 0.00 0.14 0.14 0.00 0.03 0.03 120 120 < 0.005 < 0.005 0.04 120
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.06 0.00 0.00 0.03 0.03 0.00 0.01 0.01 19.9 19.9 < 0.005 < 0.005 0.01 19.9
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.33. Paving (2040) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM 1 OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
38 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Daily, -
Summer
(Max)
Off-Roa 0.58 0.49 5.27 9.75 0.01 0.11 0.11 0.10 0.10 1,511 1,511 0.06 0.01 1,516
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.58 0.49 5.27 9.75 0.01 0.11 0.11 0.10 0.10 1,511 1,511 0.06 0.01 1,516
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.41 0.35 3.78 6.98 0.01 0.08 0.08 0.07 0.07 1,082 1,082 0.04 0.01 1,086
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.08 0.06 0.69 1.27 < 0.005 0.01 0.01 0.01 0.01 179 179 0.01 < 0.005 - 180
d
Equipm
ent
Paving 0.00 0.00
39 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.03 0.03 0.02 0.63 0.00 0.00 0.20 0.20 0.00 0.05 0.05 183 183 < 0.005 < 0.005 0.12 184
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.03 0.02 0.02 0.35 0.00 0.00 0.20 0.20 0.00 0.05 0.05 157 157 < 0.005 < 0.005 < 0.005 157
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.02 0.02 0.02 0.32 0.00 0.00 0.14 0.14 0.00 0.03 0.03 120 120 < 0.005 < 0.005 0.04 120
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.06 0.00 0.00 0.03 0.03 0.00 0.01 0.01 19.8 19.8 < 0.005 < 0.005 0.01 19.9
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.35. Paving (2041) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM 1 OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
40 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Daily, -
Summer
(Max)
Off-Roa 0.57 0.48 5.20 9.74 0.01 0.10 0.10 0.09 0.09 1,511 1,511 0.06 0.01 1,516
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.57 0.48 5.20 9.74 0.01 0.10 0.10 0.09 0.09 1,511 1,511 0.06 0.01 1,516
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.41 0.34 3.72 6.96 0.01 0.07 0.07 0.07 0.07 1,079 1,079 0.04 0.01 1,083
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.07 0.06 0.68 1.27 < 0.005 0.01 0.01 0.01 0.01 179 179 0.01 < 0.005 - 179
d
Equipm
ent
Paving 0.00 0.00
41 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.03 0.02 0.02 0.61 0.00 0.00 0.20 0.20 0.00 0.05 0.05 182 182 < 0.005 < 0.005 0.10 183
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.03 0.02 0.02 0.34 0.00 0.00 0.20 0.20 0.00 0.05 0.05 156 156 < 0.005 < 0.005 < 0.005 156
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.02 0.02 0.01 0.31 0.00 0.00 0.14 0.14 0.00 0.03 0.03 119 119 < 0.005 < 0.005 0.03 119
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.06 0.00 0.00 0.03 0.03 0.00 0.01 0.01 19.6 19.6 < 0.005 < 0.005 0.01 19.7
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.37. Paving (2042) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM 1 OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
42 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Daily, -
Summer
(Max)
Off-Roa 0.56 0.47 5.16 9.73 0.01 0.10 0.10 0.09 0.09 1,511 1,511 0.06 0.01 1,516
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.56 0.47 5.16 9.73 0.01 0.10 0.10 0.09 0.09 1,511 1,511 0.06 0.01 1,516
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.40 0.34 3.68 6.95 0.01 0.07 0.07 0.06 0.06 1,079 1,079 0.04 0.01 1,083
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.07 0.06 0.67 1.27 < 0.005 0.01 0.01 0.01 0.01 179 179 0.01 < 0.005 - 179
d
Equipm
ent
Paving 0.00 0.00
43 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.03 0.02 0.02 0.60 0.00 0.00 0.20 0.20 0.00 0.05 0.05 181 181 < 0.005 < 0.005 0.09 182
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.03 0.02 0.02 0.34 0.00 0.00 0.20 0.20 0.00 0.05 0.05 155 155 < 0.005 < 0.005 < 0.005 155
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.02 0.02 0.01 0.30 0.00 0.00 0.14 0.14 0.00 0.03 0.03 118 118 < 0.005 < 0.005 0.03 118
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.05 0.00 0.00 0.03 0.03 0.00 0.01 0.01 19.5 19.5 < 0.005 < 0.005 < 0.005 19.6
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.39. Paving (2043) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM 1 OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
44/79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Daily, -
Summer
(Max)
Off-Roa 0.56 0.47 5.12 9.72 0.01 0.09 0.09 0.08 0.08 1,511 1,511 0.06 0.01 1,516
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.56 0.47 5.12 9.72 0.01 0.09 0.09 0.08 0.08 1,511 1,511 0.06 0.01 1,516
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.40 0.33 3.66 6.95 0.01 0.06 0.06 0.06 0.06 1,079 1,079 0.04 0.01 1,083
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.07 0.06 0.67 1.27 < 0.005 0.01 0.01 0.01 0.01 179 179 0.01 < 0.005 - 179
d
Equipm
ent
Paving 0.00 0.00
45 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.03 0.02 0.02 0.59 0.00 0.00 0.20 0.20 0.00 0.05 0.05 180 180 < 0.005 < 0.005 0.08 181
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.03 0.02 0.02 0.33 0.00 0.00 0.20 0.20 0.00 0.05 0.05 154 154 < 0.005 < 0.005 < 0.005 155
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.02 0.01 0.01 0.29 0.00 0.00 0.14 0.14 0.00 0.03 0.03 118 118 < 0.005 < 0.005 0.02 118
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.05 0.00 0.00 0.03 0.03 0.00 0.01 0.01 19.5 19.5 < 0.005 < 0.005 < 0.005 19.5
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.41. Paving (2044) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM 1 OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
46 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Daily, -
Summer
(Max)
Off-Roa 0.55 0.46 5.11 9.72 0.01 0.09 0.09 0.08 0.08 1,511 1,511 0.06 0.01 1,516
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.55 0.46 5.11 9.72 0.01 0.09 0.09 0.08 0.08 1,511 1,511 0.06 0.01 1,516
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.39 0.33 3.66 6.96 0.01 0.06 0.06 0.06 0.06 1,082 1,082 0.04 0.01 1,086
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.07 0.06 0.67 1.27 < 0.005 0.01 0.01 0.01 0.01 179 179 0.01 < 0.005 - 180
d
Equipm
ent
Paving 0.00 0.00
47 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.03 0.02 0.02 0.58 0.00 0.00 0.20 0.20 0.00 0.05 0.05 180 180 < 0.005 < 0.005 0.07 180
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.02 0.02 0.02 0.32 0.00 0.00 0.20 0.20 0.00 0.05 0.05 154 154 < 0.005 < 0.005 < 0.005 154
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.02 0.01 0.01 0.29 0.00 0.00 0.14 0.14 0.00 0.03 0.03 117 117 < 0.005 < 0.005 0.02 118
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.05 0.00 0.00 0.03 0.03 0.00 0.01 0.01 19.4 19.4 < 0.005 < 0.005 < 0.005 19.5
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.43. Paving (2045) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM 1 OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
48 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Daily, -
Summer
(Max)
Off-Roa 0.54 0.45 5.07 9.71 0.01 0.08 0.08 0.07 0.07 1,511 1,511 0.06 0.01 1,516
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.54 0.45 5.07 9.71 0.01 0.08 0.08 0.07 0.07 1,511 1,511 0.06 0.01 1,516
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.26 0.22 2.49 4.77 0.01 0.04 0.04 0.03 0.03 742 742 0.03 0.01 745
d
Equipm
ent
Paving 0.00 0.00
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.05 0.04 0.45 0.87 < 0.005 0.01 0.01 0.01 0.01 123 123 < 0.005 < 0.005 - 123
d
Equipm
ent
Paving 0.00 0.00
49 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.03 0.02 0.02 0.57 0.00 0.00 0.20 0.20 0.00 0.05 0.05 179 179 < 0.005 < 0.005 0.06 179
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.02 0.02 0.02 0.32 0.00 0.00 0.20 0.20 0.00 0.05 0.05 153 153 < 0.005 < 0.005 < 0.005 153
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.01 0.01 0.01 0.20 0.00 0.00 0.10 0.10 0.00 0.02 0.02 80.2 80.2 < 0.005 < 0.005 0.01 80.3
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.04 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 - 13.3 13.3 < 0.005 < 0.005 < 0.005 13.3
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.45. Architectural Coating (2036) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM 1 OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
50 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Daily, -
Summer
(Max)
Daily, -
Winter
(Max)
Off-Roa 0.11 0.09 0.75 1.10 < 0.005 0.01
d
Equipm
ent
Architect 1.49
ural
Coating
s
1.49
0.01 < 0.005 - < 0.005 - 134 134 0.01 < 0.005 - 134
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average -
Daily
Off-Roa 0.02 0.01 0.12 0.18 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 21.4 21.4 < 0.005 < 0.005 - 21.5
d
Equipm
ent
Architect 0.24
ural
Coating
s
0.24
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa < 0.005 < 0.005 0.02 0.03 < 0.005 < 0.005 -
d
Equipm
ent
Architect 0.04
ural
Coating
s
0.04
< 0.005 < 0.005 - < 0.005 -
3.55 3.55 < 0.005 < 0.005 - 3.56
51 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily,
Summer
(Max)
Daily,
Winter
(Max)
Worker 0.05 0.05 0.04 0.56 0.00 0.00 0.27 0.27 0.00 0.06 0.06 222 222 < 0.005 < 0.005 0.01 222
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.01 0.01 0.01 0.11 0.00 0.00 0.04 0.04 0.00 0.01 0.01 38.0 38.0 < 0.005 < 0.005 0.02 38.1
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.02 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 - 6.28 6.28 < 0.005 < 0.005 < 0.005 6.30
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.47. Architectural Coating (2037) - Unmitigated
Criteria Pollutants (Ib/day for daily, ton/yr for annual) and GHGs (Ib/day for daily, MT/yr for annual)
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM1OD
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Onsite
Daily, -
Summer
(Max)
52/79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Off-Roa 0.11 0.09 0.75 1.09 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 134 134 0.01 < 0.005 - 134
d
Equipm
ent
Architect 1.49 1.49
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.11 0.09 0.75 1.09 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 134 134 0.01 < 0.005 - 134
d
Equipm
ent
Architect 1.49 1.49
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average -
Daily
Off-Roa 0.08 0.06 0.53 0.78 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 95.4 95.4 < 0.005 < 0.005 - 95.7
d
Equipm
ent
Architect 1.06 1.06
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
53 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Off-Roa 0.01 0.01 0.10 0.14 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 15.8 15.8 < 0.005 < 0.005 - 15.8
d
Equipm
Architect 0.19 0.19
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.05 0.05 0.03 0.95 0.00 0.00 0.27 0.27 0.00 0.06 0.06 257 257 < 0.005 < 0.005 0.26 258
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.04 0.04 0.03 0.54 0.00 0.00 0.27 0.27 0.00 0.06 0.06 220 220 < 0.005 < 0.005 0.01 220
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.03 0.03 0.02 0.48 0.00 0.00 0.19 0.19 0.00 0.05 0.05 167 167 < 0.005 < 0.005 0.08 168
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.01 0.01 < 0.005 0.09 0.00 0.00 0.04 0.04 0.00 0.01 0.01 27.7 27.7 < 0.005 < 0.005 0.01 27.8
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
54/79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
3.49. Architectural Coating (2038) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
Onsite
Daily,
Summer
(Max)
Off-Roa
d
Equipm
ent
Architect
ural
Coating
s
Onsite
truck
Daily,
Winter
(Max)
Off-Roa
d
Equipm
ent
Architect
ural
Coating
s
Onsite
truck
Average
Daily
Off-Roa
d
Equipm
ent
0.11
1.49
0.00
0.11
1.49
0.00
0.08
ROG
NOx
CO
SO2
PM10E
PM10D
PM 10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
0.09
1.49
0.00
0.09
1.49
0.00
0.06
0.75
0.00
0.75
0.00
0.53
1.09
0.00
1.09
0.00
0.78
<0.005
0.00
< 0.005
0.00
< 0.005
<0.005
0.00
< 0.005
0.00
<0.005
0.00
0.00
<0.005
0.00
< 0.005
0.00
< 0.005
< 0.005
0.00
< 0.005
0.00
< 0.005
0.00
0.00
< 0.005
0.00
< 0.005
0.00
< 0.005
134
0.00
134
0.00
95.4
134
0.00
134
0.00
95.4
0.01
0.00
0.01
0.00
< 0.005
< 0.005
0.00
< 0.005
0.00
< 0.005
CO2e
0.00
0.00
134
0.00
134
0.00
95.7
55 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Architect 1.06 1.06
Coatings
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual -
Off-Roa 0.01 0.01 0.10 0.14 < 0.005 < 0.005 -
d
Equipm
ent
Architect 0.19
ural
Coating
s
0.19
< 0.005 < 0.005 - < 0.005 -
15.8 15.8 < 0.005 < 0.005 - 15.8
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.05 0.05 0.03 0.93 0.00 0.00 0.27 0.27 0.00 0.06 0.06 257 257 < 0.005 < 0.005 0.23 258
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.04 0.04 0.03 0.53 0.00 0.00 0.27 0.27 0.00 0.06 0.06 220 220 < 0.005 < 0.005 0.01 220
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average -
Daily
Worker 0.03 0.03 0.02 0.47 0.00 0.00 0.19 0.19 0.00 0.05 0.05 168 168 < 0.005 < 0.005 0.07 168
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual -
56 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Worker 0.01 0.01 < 0.005 0.09 0.00 0.00 0.04 0.04 0.00 0.01 0.01 27.7 27.7 < 0.005 < 0.005 0.01 27.8
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.51. Architectural Coating (2039) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Onsite
Daily,
Summer
(Max)
Off-Roa 0.11 0.09 0.74 1.09 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 134 134 0.01 < 0.005 - 134
d
Equipm
ent
Architect 1.49 1.49
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.11 0.09 0.74 1.09 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 134 134 0.01 < 0.005 - 134
d
Equipm
ent
Architect 1.49
ural
Coating
s
1.49
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
57 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Average
Daily
Off-Roa 0.08 0.06 0.53 0.78 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 95.4 95.4 < 0.005 < 0.005 - 95.7
d
Equipm
ent
Architect 1.06 1.06
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual -
Off-Roa 0.01 0.01 0.10 0.14 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 15.8 15.8 < 0.005 < 0.005 - 15.8
d
Equipm
ent
Architect 0.19 0.19
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.05 0.05 0.03 0.90 0.00 0.00 0.27 0.27 0.00 0.06 0.06 255 255 < 0.005 < 0.005 0.20 256
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.04 0.03 0.03 0.51 0.00 0.00 0.27 0.27 0.00 0.06 0.06 218 218 < 0.005 < 0.005 0.01 219
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
58 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.03 0.03 0.02 0.46 0.00 0.00 0.19 0.19 0.00 0.05 0.05 166 166 < 0.005 < 0.005 0.06 167
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.01 0.01 < 0.005 0.08 0.00 0.00 0.04 0.04 0.00 0.01 0.01 27.5 27.5 < 0.005 < 0.005 0.01 27.6
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.53. Architectural Coating (2040) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Onsite
Daily,
Summer
(Max)
Off-Roa 0.11 0.09 0.74 1.09 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 134 134 0.01 < 0.005 - 134
d
Equipm
ent
Architect 1.49 1.49
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
59 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Off-Roa 0.11 0.09 0.74 1.09 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 134 134 0.01 < 0.005 - 134
d
Equipm
Architect 1.49 1.49
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average -
Daily
Off-Roa 0.08 0.06 0.53 0.78 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 95.6 95.6 < 0.005 < 0.005 - 96.0
d
Equipm
ent
Architect 1.07
ural
Coating
s
1.07
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.01 0.01 0.10 0.14 < 0.005 < 0.005 -
d
Equipm
ent
Architect 0.19 0.19
ural
Coating
s
< 0.005 < 0.005 - < 0.005 -
15.8 15.8 < 0.005 < 0.005 - 15.9
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily,
Summer
(Max)
Worker 0.04 0.04 0.03 0.88 0.00 0.00 0.27 0.27 0.00 0.06 0.06 254 254 < 0.005 < 0.005 0.17 254
60 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.04 0.03 0.03 0.49 0.00 0.00 0.27 0.27 0.00 0.06 0.06 217 217 < 0.005 < 0.005 < 0.005 217
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average -
Daily
Worker 0.03 0.02 0.02 0.44 0.00 0.00 0.19 0.19 0.00 0.05 0.05 166 166 < 0.005 < 0.005 0.05 166
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.01 < 0.005 < 0.005 0.08 0.00 0.00 0.04 0.04 0.00 0.01 0.01 27.4 27.4 < 0.005 < 0.005 0.01 27.5
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.55. Architectural Coating (2041) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM 10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Onsite
Daily,
Summer
(Max)
Off-Roa 0.11 0.09 0.74 1.09 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 134 134 0.01 < 0.005 - 134
d
Equipm
ent
61 /79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Architect 1.49
ural
Coating
s
1.49
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.11 0.09 0.74 1.09 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 134 134 0.01 < 0.005 - 134
d
Equipm
ent
Architect 1.49 1.49
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.08 0.06 0.53 0.78 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 95.4 95.4 < 0.005 < 0.005 - 95.7
d
Equipm
ent
Architect 1.06 1.06
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.01 0.01 0.10 0.14 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 15.8 15.8 < 0.005 < 0.005 - 15.8
d
Equipm
ent
62 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Architect
ural
Coating
Onsite
truck
Offsite
Daily,
Summer
(Max)
0.19
0.00
0.19
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Worker 0.04 0.03 0.03 0.85 0.00 0.00 0.27 0.27 0.00 0.06 0.06 252 252 < 0.005 < 0.005 0.15 253
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.04 0.03 0.03 0.48 0.00 0.00 0.27 0.27 0.00 0.06 0.06 216 216 < 0.005 < 0.005 < 0.005 216
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.03 0.02 0.02 0.43 0.00 0.00 0.19 0.19 0.00 0.05 0.05 164 164 < 0.005 < 0.005 0.04 165
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.01 < 0.005 < 0.005 0.08 0.00 0.00 0.04 0.04 0.00 0.01 0.01 27.2 27.2 < 0.005 < 0.005 0.01 27.3
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.57. Architectural Coating (2042) - Unmitigated
Criteria Pollutants (Ib/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM1OT
PM2.5E
63 / 79
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Onsite
Daily,
Summer
(Max)
Off-Roa 0.11 0.09 0.74 1.09 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 134 134 0.01 < 0.005 - 134
d
Equipm
ent
Architect 1.49 1.49
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.11 0.09 0.74 1.09 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 134 134 0.01 < 0.005 - 134
d
Equipm
ent
Architect 1.49 1.49
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.08 0.06 0.53 0.78 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 95.4 95.4 < 0.005 < 0.005 - 95.7
d
Equipm
ent
Architect 1.06 1.06
ural
Coating
s
64/79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.01 0.01 0.10 0.14 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 15.8 15.8 < 0.005 < 0.005 - 15.8
d
Equipm
ent
Architect 0.19 0.19
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.04 0.03 0.03 0.83 0.00 0.00 0.27 0.27 0.00 0.06 0.06 251 251 < 0.005 < 0.005 0.12 252
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.04 0.03 0.03 0.47 0.00 0.00 0.27 0.27 0.00 0.06 0.06 215 215 < 0.005 < 0.005 < 0.005 215
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.03 0.02 0.02 0.42 0.00 0.00 0.19 0.19 0.00 0.05 0.05 164 164 < 0.005 < 0.005 0.04 164
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker 0.01 < 0.005 < 0.005 0.08 0.00 0.00 0.04 0.04 0.00 0.01 0.01 27.1 27.1 < 0.005 < 0.005 0.01 27.1
65 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.59. Architectural Coating (2043) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
Daily,
Summer
(Max)
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Off-Roa 0.11 0.09 0.74 1.09 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 134 134 0.01 < 0.005 - 134
d
Equipm
ent
Architect 1.49 1.49
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.11 0.09 0.74 1.09 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 134 134 0.01 < 0.005 - 134
d
Equipm
ent
Architect 1.49 1.49
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
66 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Off-Roa 0.08 0.06 0.53 0.78 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 95.4 95.4 < 0.005 < 0.005 - 95.7
Equipment
Architect 1.06 1.06
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.01 0.01 0.10 0.14 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 15.8 15.8 < 0.005 < 0.005 - 15.8
d
Equipm
ent
Architect 0.19
ural
Coating
s
0.19
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily, -
Summer
(Max)
Worker 0.04 0.03 0.03 0.81 0.00 0.00 0.27 0.27 0.00 0.06 0.06 250 250 < 0.005 < 0.005 0.11 250
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.04 0.03 0.03 0.46 0.00 0.00 0.27 0.27 0.00 0.06 0.06 214 214 < 0.005 < 0.005 < 0.005 214
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.03 0.02 0.02 0.41 0.00 0.00 0.19 0.19 0.00 0.05 0.05 163 163 < 0.005 < 0.005 0.03 163
67 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.07 0.00 0.00 0.04 0.04 0.00 0.01 0.01 26.9 26.9 < 0.005 < 0.005 0.01 27.0
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.61. Architectural Coating (2044) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
Onsite
Daily,
Summer
(Max)
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM 10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Off-Roa 0.11 0.09 0.74 1.09 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 134 134 0.01 < 0.005 - 134
d
Equipm
ent
Architect 1.49 1.49
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.11 0.09 0.74 1.09 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 134 134 0.01 < 0.005 - 134
d
Equipm
ent
68 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Architect 1.49 1.49
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.08 0.06 0.53 0.78 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 95.6 95.6 < 0.005 < 0.005 - 96.0
d
Equipm
ent
Architect 1.07 1.07
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.01 0.01 0.10 0.14 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 15.8 15.8 < 0.005 < 0.005 - 15.9
d
Equipm
ent
Architect 0.19 0.19
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Offsite
Daily,
Summer
(Max)
Worker 0.04 0.03 0.02 0.80 0.00 0.00 0.27 0.27 0.00 0.06 0.06 249 249 < 0.005 < 0.005 0.09 249
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
69 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Daily,
Winter
(Max)
Worker 0.03 0.03 0.02 0.45 0.00 0.00 0.27 0.27 0.00 0.06 0.06 213 213 < 0.005 < 0.005 < 0.005 213
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.03 0.02 0.02 0.40 0.00 0.00 0.19 0.19 0.00 0.05 0.05 163 163 < 0.005 < 0.005 0.03 163
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.07 0.00 0.00 0.04 0.04 0.00 0.01 0.01 26.9 26.9 < 0.005 < 0.005 < 0.005 27.0
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
3.63. Architectural Coating (2045) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Location
TOG
ROG
NOx
CO
SO2
PM10E
PM1OD
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Onsite
Daily,
Summer
(Max)
- - - - - - - - - - - - - - - - -
Off-Roa 0.11 0.09 0.74 1.09 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 134 134 0.01 < 0.005 - 134
d
Equipm
ent
Architect 1.49 1.49
ural
Coating
s
70 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Daily,
Winter
(Max)
Off-Roa 0.11 0.09 0.74 1.09 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 134 134 0.01 < 0.005 - 134
d
Equipm
ent
Architect 1.49 1.49
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Average
Daily
Off-Roa 0.05 0.04 0.36 0.54 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 65.6 65.6 < 0.005 < 0.005 - 65.8
d
Equipm
ent
Architect 0.73 0.73
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
Annual
Off-Roa 0.01 0.01 0.07 0.10 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 10.9 10.9 < 0.005 < 0.005 - 10.9
d
Equipm
ent
Architect 0.13 0.13
ural
Coating
s
Onsite 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
truck
71 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Offsite
Daily, -
Summer
(Max)
Worker 0.04 0.03 0.02 0.79 0.00 0.00 0.27 0.27 0.00 0.06 0.06 248 248 < 0.005 < 0.005 0.08 249
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Daily,
Winter
(Max)
Worker 0.03 0.03 0.02 0.44 0.00 0.00 0.27 0.27 0.00 0.06 0.06 212 212 < 0.005 < 0.005 < 0.005 212
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average
Daily
Worker 0.01 0.01 0.01 0.28 0.00 0.00 0.13 0.13 0.00 0.03 0.03 111 111 < 0.005 < 0.005 0.02 111
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Annual
Worker < 0.005 < 0.005 < 0.005 0.05 0.00 0.00 0.02 0.02 0.00 0.01 0.01 18.4 18.4 < 0.005 < 0.005 < 0.005 18.4
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
4. Operations Emissions Details
4.10. Soil Carbon Accumulation By Vegetation Type
4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Vegetati
on
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM 10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
72 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Daily,
Summer
(Max)
Total
Daily,
Winter
(Max)
Total
Annual
Total
4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Land
Use
Daily,
Summer
(Max)
Total
Daily,
Winter
(Max)
Total
Annual
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
BCO2
Total
4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
NBCO2
CO2T
CH4
N2O
R
CO2e
Species
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N2O
R
CO2e
Daily, —
Summer
(Max)
73 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Avoided
Subtotal
Sequest
ered
Subtotal
Remove
d
Subtotal
Daily,
Winter
(Max)
Avoided
Subtotal
Sequest
ered
Subtotal
Remove
d
Subtotal
Annual
Avoided
Subtotal
Sequest
ered
Subtotal
Remove
d
Subtotal
74/79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
5. Activity Data
5.1. Construction Schedule
Phase Name
Phase Type
Start Date
End Date
Days Per Week
Work Days per Phase
Phase Description
Grading
Building Construction
Paving
Architectural Coating
Grading 1/1/2035
Building Construction 10/11/2036
Paving 10/11/2036
Architectural Coating 10/11/2036
5.2. Off -Road Equipment
5.2.1. Unmitigated
10/10/2036
9/8/2045
9/8/2045
9/8/2045
5.00
5.00
5.00
5.00
465
2,325
2,325
2,325
Phase Name
Equipment Type
Fuel Type
Engine Tier
Number per Day
Hours Per Day
Horsepower
Load Factor
Grading
Grading
Grading
Grading
Grading
Building Construction
Building Construction
Building Construction
Building Construction
Building Construction
Paving
Paving
Paving
Excavators
Graders
Rubber Tired Dozers
Tractors/Loaders/Back
hoes
Scrapers
Cranes
Forklifts
Generator Sets
Tractors/Loaders/Back
hoes
Welders
Pavers
Paving Equipment
Rollers
Diesel
Diesel
Diesel
Diesel
Diesel
Diesel
Diesel
Diesel
Diesel
Diesel
Diesel
Diesel
Diesel
Average 2.00
Average 1.00
Average 1.00
Average 2.00
Average 2.00
Average 1.00
Average 3.00
Average 1.00
Average 3.00
Average 1.00
Average 2.00
Average 2.00
Average 2.00
8.00
8.00
8.00
8.00
8.00
7.00
8.00
8.00
7.00
8.00
8.00
8.00
8.00
36.0
148
367
84.0
423
367
82.0
14.0
84.0
46.0
81.0
89.0
36.0
0.38
0.41
0.40
0.37
0.48
0.29
0.20
0.74
0.37
0.45
0.42
0.36
0.38
75 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Architectural Coating Air Compressors Diesel
5.3. Construction Vehicles
5.3.1. Unmitigated
Average
1.00 6.00
37.0 0.48
Phase Name
Trip Type
One -Way Trips per Day
Miles per Trip
Vehicle Mix
Grading
Grading
Grading
Grading
Grading
Building Construction
Building Construction
Building Construction
Building Construction
Building Construction
Paving
Paving
Paving
Paving
Paving
Architectural Coating
Architectural Coating
Architectural Coating
Architectural Coating
Architectural Coating
5.4. Vehicles
Worker
Vendor
Hauling
Onsite truck
20.0
0.00
Worker 104
Vendor 33.6
Hauling 0.00
Onsite truck
18.5
10.2
20.0
18.5
10.2
20.0
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
HHDT
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
HHDT
Worker 15.0 18.5 LDA,LDT1,LDT2
Vendor 10.2 HHDT,MHDT
Hauling 0.00 20.0 HHDT
Onsite truck HHDT
Worker 20.8 18.5
Vendor 10.2
Hauling 0.00 20.0
Onsite truck
LDA,LDT1,LDT2
HHDT,MHDT
HHDT
HHDT
76 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
5.4.1. Construction Vehicle Control Strategies
Control Strategies Applied
PM10 Reduction
PM2.5 Reduction
Water unpaved roads twice daily
Limit vehicle speeds on unpaved roads to 25 mph
Sweep paved roads once per month
5.5. Architectural Coatings
55%
44%
9%
55%
44%
9%
Phase Name
Residential Interior Area
Coated (sq ft)
Residential Exterior Area
Coated (sq ft)
Non -Residential Interior Area
Coated (sq ft)
Non -Residential Exterior Area
Coated (sq ft)
Parking Area Coated (sq ft)
Architectural Coating
5.6. Dust Mitigation
999,034
5.6.1. Construction Earthmoving Activities
333,011
60,000
20,000
Phase Name
Material Imported (cy)
Material Exported (cy)
Acres Graded (acres)
Material Demolished (sq. ft.)
Acres Paved (acres)
Grading
Paving
0.00
0.00
5.6.2. Construction Earthmoving Control Strategies
1,395
0.00
0.00
0.00
2.79
Control Strategies Applied
Frequency (per day)
PM10 Reduction
PM2.5 Reduction
Water Exposed Area
Water Demolished Area
5.7. Construction Paving
3
2
74%
36%
74%
36%
Land Use
Area Paved (acres)
% Asphalt
Golf Course
0.00
0%
77 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Single Family Housing
General Office Building
2.79
0.00
5.8. Construction Electricity Consumption and Emissions Factors
kWh per Year and Emission Factor (Ib/MWh)
Year
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
5.18. Vegetation
5.18.1. Land Use Change
5.18.1.1. Unmitigated
kWh per Year
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
CO2
457
457
457
457
457
457
457
457
457
457
457
0%
0%
CH4
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.03
0.03
N2O
< 0.005
< 0.005
< 0.005
< 0.005
< 0.005
< 0.005
< 0.005
< 0.005
< 0.005
< 0.005
< 0.005
Vegetation Land Use Type
Vegetation Soil Type
Initial Acres
Final Acres
5.18.1. Biomass Cover Type
5.18.1.1. Unmitigated
78 / 79
SilverRock Resort Proposed Project Construction Phase 2 (Planning Area 8) Custom Report, 7/18/2025
Biomass Cover Type
Initial Acres
Final Acres
5.18.2. Sequestration
5.18.2.1. Unmitigated
Tree Type
Number
Electricity Saved (kWh/year)
Natural Gas Saved (btu/year)
8. User Changes to Default Data
Screen
Justification
Land Use
Construction: Construction Phases
PA 8 includes a second 18-hole golf course is proposed with up to 253 private residences and
40,000 SF of commercial uses
Assumed 10% of land use is landscaped.
Construction estimated to take place from 2035 to 2045.
Building construction, paving, and architectural coating to occur intermittently as homes are
constructed.
79 / 79
APPENDIX A.6
Proposed Project Operations
SilverRock Proposed Project Operations Custom Report, 7/31/2025
SilverRock Proposed Project Operations Custom Report
Table of Contents
1. Basic Project Information
1.1. Basic Project Information
1.2. Land Use Types
1.3. User -Selected Emission Reduction Measures by Emissions Sector
2. Emissions Summary
2.4. Operations Emissions Compared Against Thresholds
2.5. Operations Emissions by Sector, Unmitigated
4. Operations Emissions Details
4.1. Mobile Emissions by Land Use
4.1.1. Unmitigated
4.2. Energy
4.2.1. Electricity Emissions By Land Use - Unmitigated
4.2.3. Natural Gas Emissions By Land Use - Unmitigated
4.3. Area Emissions by Source
4.3.1. Unmitigated
1 / 30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
4.4. Water Emissions by Land Use
4.4.1. Unmitigated
4.5. Waste Emissions by Land Use
4.5.1. Unmitigated
4.6. Refrigerant Emissions by Land Use
4.6.1. Unmitigated
4.7. Offroad Emissions By Equipment Type
4.7.1. Unmitigated
4.8. Stationary Emissions By Equipment Type
4.8.1. Unmitigated
4.9. User Defined Emissions By Equipment Type
4.9.1. Unmitigated
4.10. Soil Carbon Accumulation By Vegetation Type
4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated
4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated
4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated
5. Activity Data
5.9. Operational Mobile Sources
2/30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
5.9.1. Unmitigated
5.10. Operational Area Sources
5.10.1. Hearths
5.10.1.1. Unmitigated
5.10.2. Architectural Coatings
5.10.3. Landscape Equipment
5.11. Operational Energy Consumption
5.11.1. Unmitigated
5.12. Operational Water and Wastewater Consumption
5.12.1. Unmitigated
5.13. Operational Waste Generation
5.13.1. Unmitigated
5.14. Operational Refrigeration and Air Conditioning Equipment
5.14.1. Unmitigated
5.15. Operational Off -Road Equipment
5.15.1. Unmitigated
5.16. Stationary Sources
5.16.1. Emergency Generators and Fire Pumps
3/30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
5.16.2. Process Boilers
5.17. User Defined
5.18. Vegetation
5.18.1. Land Use Change
5.18.1.1. Unmitigated
5.18.1. Biomass Cover Type
5.18.1.1. Unmitigated
5.18.2. Sequestration
5.18.2.1. Unmitigated
8. User Changes to Default Data
4/30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
1. Basic Project Information
1.1. Basic Project Information
Data Field
Project Name
Operational Year
Lead Agency
Land Use Scale
Analysis Level for Defaults
Windspeed (m/s)
Precipitation (days)
Location
County
City
Air District
Air Basin
TAZ
EDFZ
Electric Utility
Gas Utility
App Version
Value
SilverRock Proposed Project Operations
2045
Project/site
County
3.00
7.60
33.67414841676246, -116.28483188652353
Riverside -Salton Sea
La Quinta
South Coast AQMD
Salton Sea
5651
19
Imperial Irrigation District
Southern California Gas
2022.1.1.29
1.2. Land Use Types
Land Use Subtype
Size
Unit
Lot Acreage
Building Area (sq ft)
Landscape Area (sq
ft)
Special Landscape
Area (sq ft)
Population
Description
Golf Course
General Office
Building
36.0
17.0
Hole
1000sgft
251
0.39
0.00
17,000
0.00
1,700
0.00
5/30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
General Office 55.0 1000sgft 1.26 55,000 5,500
Building
Hotel 154 Room 5.13 223,608 25,000
Quality Restaurant 7.50 1000sgft 0.17 7,500 750
Condo/Townhouse 70.0 Dwelling Unit 4.38 74,200 7,420 226
Single Family 29.0 Dwelling Unit 9.42 56,550 5,655 94.0
Housing
Single Family 93.0 Dwelling Unit 30.2 181,350 18,135 300
Housing
Single Family 253 Dwelling Unit 82.1 493,350 49,335 817
Housing
General Office 40.0 1000sqft 0.92 40,000 4,000
Building
1.3. User -Selected Emission Reduction Measures by Emissions Sector
No measures selected
2. Emissions Summary
2.4. Operations Emissions Compared Against Thresholds
Criteria Pollutants (Ib/day for daily, ton/yr for annual) and GHGs (Ib/day for daily, MT/yr for annual)
Un/Mit.
Daily,
Summer
(Max)
TOG
ROG
NOx
CO
SO2
PM10E
PM1OD
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Unmit. 54.9 52.2 32.0 331 0.91 0.98 86.8 87.8 0.95 22.0 23.0 405 110,540 110,946 44.4 3.87 390 113,598
Daily,
Winter
(Max)
Unmit. 47.6 45.2 33.9 194 0.81 0.94 86.8 87.7 0.92 22.0 22.9 405 100,593 100,998 44.4 3.96 368 103,657
Average
Daily
(Max)
6/30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
Unmit. 48.4 46.0 30.1 220 0.76 0.91 76.8 77.7 0.88 19.5 20.4 405 95,381 95,786 44.2 3.50 376 98,310
Annual
(Max)
Unmit. 8.83 8.40 5.49 40.2 0.14 0.17 14.0
14.2 0.16 3.55
3.72 67.1 15,791 15,858 7.31 0.58 62.2 16,276
2.5. Operations Emissions by Sector, Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Sector
TOG
Daily,
Summer
(Max)
ROG
NOx
CO
SO2
PM10E
PM10D
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Mobile 22.4 20.3 25.3 287 0.86 0.44 86.8 87.2 0.42 22.0 22.4 88,224 88,224 1.90 3.52 22.5 89,343
Area 31.8 31.5 0.36 40.3 < 0.005 0.04 0.04 0.03 0.03 129 129 0.01 < 0.005 129
Energy 0.72 0.36 6.34 3.78 0.04 0.50 0.50 0.50 0.50 21,915 21,915 1.71 0.14 21,999
Water 84.7 272 357 8.70 0.21 637
Waste 321 0.00 321 32.1 0.00 1,122
Refrig. 367 367
Total 54.9 52.2 32.0 331 0.91 0.98 86.8 87.8 0.95 22.0 23.0 405 110,540 110,946 44.4 3.87 390 113,598
Daily,
Winter
(Max)
Mobile 20.0
Area 26.8
Energy 0.72
Water -
Waste
Refrig. -
18.0 27.5 190 0.77 0.44 86.8 87.2 0.42 22.0 22.4 78,406 78,406 1.94 3.61
26.8
0.36 6.34 3.78 0.04 0.50 0.50 0.50 0.50 21,915 21,915 1.71 0.14
84.7 272 357 8.70 0.21
321 0.00 321 32.1 0.00
0.58 79,531
21,999
637
1,122
367 367
Total 47.6 45.2 33.9 194 0.81 0.94 86.8 87.7 0.92 22.0 22.9 405 100,593 100,998 44.4 3.96 368 103,657
Average
Daily
7/30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
Mobile 18.4 16.5 23.6 197 0.72 0.39 76.8 77.2 0.37 19.5 19.8 73,130 73,130 1.70 3.16 8.62 74,122
Area 29.3 29.1 0.18 19.9 < 0.005 0.02 0.02 0.01 0.01 63.5 63.5 < 0.005 < 0.005 63.8
Energy 0.72 0.36 6.34 3.78 0.04 0.50 0.50 0.50 0.50 21,915 21,915 1.71 0.14 21,999
Water 84.7 272 357 8.70 0.21 637
Waste 321 0.00 321 32.1 0.00 1,122
Refrig. 367 367
Total 48.4 46.0 30.1 220 0.76 0.91 76.8 77.7 0.88 19.5 20.4 405 95,381 95,786 44.2 3.50 376 98,310
Annual
Mobile 3.35 3.02 4.30 35.9 0.13 0.07 14.0 14.1 0.07 3.55 3.62 - 12,108 12,108 0.28 0.52 1.43 12,272
Area 5.34 5.31 0.03 3.63 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 10.5 10.5 < 0.005 < 0.005 10.6
Energy 0.13 0.07 1.16 0.69 0.01 0.09 - 0.09 0.09 - 0.09 - 3,628 3,628 0.28 0.02 3,642
Water 14.0 45.0 59.1 1.44 0.03 105
Waste 53.1 0.00 53.1 5.31 0.00 186
Refrig. 60.8 60.8
Total 8.83 8.40 5.49 40.2 0.14 0.17 14.0 14.2 0.16 3.55 3.72 67.1 15,791 15,858 7.31 0.58 62.2 16,276
4. Operations Emissions Details
4.1. Mobile Emissions by Land Use
4.1.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (Ib/day for daily, MT/yr for annual)
Land
Use
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Daily,
Summer
(Max)
Golf 2.90 2.63 3.32 37.8 0.11 0.06 11.5 11.5 0.06 2.91 2.97 11,668 11,668 0.25 0.46 2.97 11,815
Course
8/30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
General 7.16 6.49 8.20 93.2 0.28 0.14 28.4 28.5 0.14 7.19 7.33 28,806 28,806 0.62 1.14 7.34 29,170
Office
Building
Hotel 3.26 2.95 3.73 42.5 0.13 0.07 12.9 13.0 0.06 3.28 3.34 13,118 13,118 0.28 0.52 3.34 13,284
Quality 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Restaura it
Condo/T 1.32 1.20 1.46 16.4 0.05 0.03 4.94 4.96 0.02 1.25 1.28 5,022 5,022 0.11 0.20 1.28 5,086
ownhou
se
Single 7.77 7.07 8.62 96.6 0.29 0.15 29.1 29.3 0.14 7.38 7.52 29,610 29,610 0.65 1.19 7.53 29,988
Family
Housing
Total 22.4 20.3 25.3 287 0.86 0.44 86.8 87.2 0.42 22.0 22.4 88,224 88,224 1.90 3.52 22.5 89,343
Daily,
Winter
(Max)
Golf 2.59 2.32 3.61 25.0 0.10 0.06 11.5 11.5 0.06 2.91 2.97 10,368 10,368 0.25 0.48 0.08 10,516
Course
General 6.40 5.74 8.91 61.7 0.25 0.14 28.4 28.5 0.14 7.19 7.33 25,598 25,598 0.63 1.17 0.19 25,964
Office
Building
Hotel 2.91 2.61 4.06 28.1 0.11 0.07 12.9 13.0 0.06 3.28 3.34 11,657 11,657 0.29 0.54 0.09 11,824
Quality 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Restaura it
Condo/T 1.18 1.06 1.59 10.9 0.04 0.03 4.94 4.96 0.02 1.25 1.28 4,464 4,464 0.11 0.21 0.03 4,529
ownhou
se
Single 6.93 6.24 9.37 64.4 0.26 0.15 29.1 29.3 0.14 7.38 7.52 26,318 26,318 0.66 1.22 0.20 26,698
Family
Housing
Total 20.0 18.0 27.5 190 0.77 0.44 86.8 87.2 0.42 22.0 22.4 78,406 78,406 1.94 3.61 0.58 79,531
Annual -
Golf 0.44 0.39 0.57 4.77 0.02 0.01 1.87 1.88 0.01 0.47 0.48 1,615 1,615 0.04 0.07 0.19 1,637
Course
9/30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
General 0.90 0.81 1.17 9.82 0.04 0.02 3.85 3.87 0.02 0.98 1.00 3,328 3,328 0.08 0.14 0.39 3,373
Office
Building
Hotel 0.52 0.47 0.68 5.72 0.02 0.01 2.24 2.25 0.01 0.57 0.58 1,936 1,936 0.04 0.08 0.23 1,962
Quality 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Restaura it
Condo/T 0.22 0.20 0.27 2.26 0.01 < 0.005 0.88 0.88 < 0.005 0.22 0.23 758 758 0.02 0.03 0.09 769
ownhou
se
Single 1.27 1.15 1.61 13.3 0.05 0.03 5.17 5.19 0.02 1.31 1.34
Family
Housing
Total 3.35 3.02 4.30 35.9 0.13 0.07 14.0 14.1 0.07 3.55 3.62
4.2. Energy
4.2.1. Electricity Emissions By Land Use - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
4,470 4,470 0.11 0.19 0.53 4,531
12,108 12,108 0.28 0.52 1.43 12,272
Land
Use
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Daily, -
Summer
(Max)
Golf
Course
General -
Office
Building
Hotel
Quality -
Restaura it
Condo/T -
ownhou
se
0.00 0.00 0.00 0.00 0.00
5,328 5,328 0.39 0.05 5,352
3,080 3,080 0.22 0.03 3,094
634 634 0.05 0.01 637
642 642 0.05 0.01 645
10/30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
Single - 4,381 4,381 0.32 0.04 4,400
Family
Housing
Total - 14,065 14,065 1.02 0.12 14,127
Daily,
Winter
(Max)
Golf 0.00 0.00 0.00 0.00 0.00
Course
General - 5,328 5,328 0.39 0.05 5,352
Office
Building
Hotel - 3,080 3,080 0.22 0.03 3,094
Quality - 634 634 0.05 0.01 637
Restaura it
Condo/T - 642 642 0.05 0.01 645
ownhou
se
Single - 4,381 4,381 0.32 0.04 4,400
Family
Housing
Total - 14,065 14,065 1.02 0.12 14,127
Annual -
Golf - 0.00 0.00 0.00 0.00 0.00
Course
General - 882 882 0.06 0.01 886
Office
Building
Hotel - 510 510 0.04 < 0.005 - 512
Quality - 105 105 0.01 < 0.005 - 105
Restaura it
Condo/T - 106 106 0.01 < 0.005 - 107
ownhou
se
11 / 30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
Single
Family
Housing
Total
725
725
0.05
0.01
728
2,329 2,329 0.17 0.02 2,339
4.2.3. Natural Gas Emissions By Land Use - Unmitigated
Criteria Pollutants (Ib/day for daily, ton/yr for annual) and GHGs (Ib/day for daily, MT/yr for annual)
Land
Use
Daily,
Summer
(Max)
Golf
Course
General
Office
Building
TOG
0.00
0.04
ROG
0.00
0.02
NOx
0.00
0.32
CO
0.00
0.27
SO2
0.00
< 0.005
PM10E
0.00
0.02
Hotel 0.23 0.11 2.07 1.74 0.01 0.16
Quality 0.02
Restaura it
Condo/T
ownhou
se
Single
Family
Housing
0.04
0.39
0.01
0.02
0.20
0.21
0.37
3.37
0.18
0.16
1.43
< 0.005
< 0.005
0.02
0.02
0.03
0.27
Total 0.72 0.36 6.34 3.78 0.04 0.50
Daily,
Winter
(Max)
Golf
Course
General
Office
Building
0.00
0.04
0.00
0.02
0.00
0.32
0.00
0.27
0.00
< 0.005
0.00
0.02
PM10D
PM10T
0.00
0.02
PM2.5E
0.00
0.02
PM2.5D
PM2.5T
0.00
0.02
0.16 0.16 0.16
0.02
0.03
0.27
0.02
0.03
0.27
0.02
0.03
0.27
0.50 0.50 0.50
0.00
0.02
0.00
0.02
0.00
0.02
BCO2
NBCO2
0.00
385
CO2T
0.00
385
CH4
0.00
0.03
N20
0.00
< 0.005
CO2e
0.00
386
2,469 2,469 0.22 < 0.005 - 2,476
255
468
4,274
255
468
4,274
0.02
0.04
0.38
< 0.005
< 0.005
0.01
256
469
4,286
7,850 7,850 0.69 0.01 7,872
0.00
385
0.00
385
0.00
0.03
0.00
< 0.005
0.00
386
12/30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
Hotel 0.23 0.11 2.07 1.74 0.01 0.16
Quality 0.02
Restaura it
Condo/T
ownhou
se
Single
Family
Housing
0.04
0.39
0.01
0.02
0.20
0.21
0.37
3.37
0.18
0.16
1.43
< 0.005
< 0.005
0.02
0.02
0.03
0.27
Total 0.72 0.36 6.34 3.78 0.04 0.50
Annual -
Golf
Course
General
Office
Building
0.00
0.01
0.00
< 0.005
0.00
0.06
0.00
0.05
0.00
< 0.005
0.00
< 0.005
Hotel 0.04 0.02 0.38 0.32 < 0.005 0.03
Quality < 0.005
Restaura it
Condo/T
ownhou
se
Single
Family
Housing
0.01
0.07
< 0.005
< 0.005
0.04
0.04
0.07
0.61
0.03
0.03
0.26
< 0.005
< 0.005
< 0.005
< 0.005
0.01
0.05
Total 0.13 0.07 1.16 0.69 0.01 0.09
0.16 0.16 0.16
0.02
0.03
0.27
0.02
0.03
0.27
0.02
0.03
0.27
0.50 0.50 0.50
0.00
< 0.005
0.00
< 0.005
0.00
< 0.005
2,469 2,469 0.22 < 0.005 - 2,476
255
468
4,274
255
468
4,274
0.02
0.04
0.38
< 0.005
< 0.005
0.01
256
469
4,286
7,850 7,850 0.69 0.01 7,872
0.00
63.7
0.00
63.7
0.00
0.01
0.00
< 0.005
0.00
63.9
0.03 0.03 0.03 409 409 0.04 < 0.005 - 410
< 0.005
0.01
0.05
< 0.005
0.01
0.05
< 0.005
0.01
0.05
0.09 0.09 0.09
42.2
77.4
708
42.2
77.4
708
< 0.005
0.01
0.06
< 0.005
< 0.005
< 0.005
42.3
77.7
710
1,300 1,300 0.12 < 0.005 - 1,303
4.3. Area Emissions by Source
4.3.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Source
TOG
ROG
NOx
CO
SO2
PM10E
PM1OD
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
13/30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
Daily,
Summer
(Max)
Consum 24.6 24.6
er
Product
s
Architect 2.25 2.25
ural
Coating
s
Landsca 4.97 4.65 0.36 40.3 <0.005 0.04 0.04 0.03 0.03 129 129 0.01 <0.005 - 129
pe
Equipm
ent
Total 31.8 31.5 0.36 40.3 <0.005 0.04 0.04 0.03 0.03 129 129 0.01 <0.005 - 129
Daily,
Winter
(Max)
Consum 24.6 24.6
er
Product
s
Architect 2.25
ural
Coating
s
2.25
Total 26.8 26.8
Annual
Consum 4.49 4.49
er
Product
s
Architect 0.41
ural
Coating
s
0.41
14/30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
Landsca 0.45 0.42 0.03 3.63 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 10.5 10.5 < 0.005 < 0.005 - 10.6
pe
Total 5.34 5.31 0.03 3.63 < 0.005 < 0.005 - < 0.005 < 0.005 - < 0.005 - 10.5 10.5 < 0.005 < 0.005 - 10.6
4.4. Water Emissions by Land Use
4.4.1. Unmitigated
Criteria Pollutants (Ib/day for daily, ton/yr for annual) and GHGs (Ib/day for daily, MT/yr for annual)
Land
Use
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Daily, -
Summer
(Max)
Golf -
Course
General -
Office
Building
Hotel -
Quality -
Restaura it
Condo/T -
ownhou
se
Single
Family
Housing
Total
Daily,
Winter
(Max)
Golf
Course
0.00 0.00 0.00 0.00 0.00
38.1 119 157 3.92 0.09
0.00
283
7.49 25.0 32.5 0.77 0.02 57.3
4.36 13.5 17.9 0.45 0.01 32.3
5.46 17.6 23.0 0.56 0.01 41.0
29.2 97.1 126 3.00 0.07 223
84.7 272 357 8.70 0.21 637
0.00 0.00 0.00 0.00 0.00 0.00
15/30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
General -
Office
Building
Hotel -
Quality -
Restaura it
Condo/T -
ownhou
se
Single -
Family
Housing
Total -
Annual -
Golf
Course
General -
Office
Building
Hotel -
Quality -
Restaura it
Condo/T -
ownhou
se
Single -
Family
Housing
Total -
38.1 119 157 3.92 0.09 283
7.49 25.0 32.5 0.77 0.02 57.3
4.36 13.5 17.9 0.45 0.01 32.3
5.46 17.6 23.0 0.56 0.01 41.0
29.2 97.1 126 3.00 0.07 223
84.7 272 357 8.70 0.21 637
0.00 0.00 0.00 0.00 0.00 0.00
6.32 19.7 26.0 0.65 0.02 46.8
1.24 4.15 5.38 0.13 < 0.005 - 9.48
0.72 2.24 2.97 0.07 < 0.005 - 5.35
0.90 2.91 3.81 0.09 < 0.005 - 6.79
4.84 16.1 20.9 0.50 0.01 36.9
14.0 45.0 59.1 1.44 0.03 105
4.5. Waste Emissions by Land Use
4.5.1. Unmitigated
Criteria Pollutants (Ib/day for daily, ton/yr for annual) and GHGs (Ib/day for daily, MT/yr for annual)
16/30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
Land
Use
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
R
CO2e
Daily, -
Summer
(Max)
Golf
Course
General -
Office
Building
Hotel -
Quality -
Restaura -it
Condo/T -
ownhou
se
Single -
Family
Housing
Total
Daily,
Winter
(Max)
Golf
Course
General -
Office
Building
Hotel -
Quality -
Restaura -it
2.59 0.00 2.59 0.26 0.00 9.04
56.1 0.00 56.1 5.61 0.00 196
45.4 0.00 45.4 4.54 0.00 159
3.69 0.00 3.69 0.37 0.00 12.9
27.9 0.00 27.9 2.79 0.00 97.6
185 0.00 185 18.5 0.00 647
321 0.00 321 32.1 0.00 1,122
2.59 0.00 2.59 0.26 0.00 9.04
56.1 0.00 56.1 5.61 0.00 196
45.4 0.00 45.4 4.54 0.00 159
3.69 0.00 3.69 0.37 0.00 12.9
Condo/T - 27.9 0.00 27.9 2.79 0.00 97.6
ownhou
se
17/30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
Single
Family
Housing
Total -
Annual -
Golf
Course
General
Office
Building
Hotel
Quality -
Restaura it
Condo/T
ownhou
se
Single
Family
Housing
Total
185
0.00
185
18.5
0.00
647
321 0.00 321 32.1 0.00 1,122
0.43
9.29
0.00
0.00
0.43
9.29
0.04
0.93
0.00
0.00
1.50
32.5
7.52 0.00 7.52 0.75 0.00 26.3
0.61
4.62
30.6
0.00
0.00
0.00
0.61
4.62
30.6
0.06
0.46
3.06
0.00
0.00
0.00
2.14
16.2
107
53.1 0.00 53.1 5.31 0.00 186
4.6. Refrigerant Emissions by Land Use
4.6.1. Unmitigated
Criteria Pollutants (Ib/day for daily, ton/yr for annual) and GHGs (Ib/day for daily, MT/yr for annual)
Land
Use
Daily,
Summer
(Max)
Golf
Course
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
0.00
CO2e
0.00
18/30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
General — 0.27 0.27
Office
Building
Hotel — 350 350
Quality — 11.7 11.7
Restaura it
Condo/T — 0.53 0.53
ownhou
se
Single — 5.24 5.24
Family
Housing
Total — 367 367
Daily,
Winter
(Max)
Golf 0.00 0.00
Course
General — 0.27 0.27
Office
Building
Hotel — 350 350
Quality — 11.7 11.7
Restaura it
Condo/T — 0.53 0.53
ownhou
se
Single — 5.24 5.24
Family
Housing
Total — 367 367
Annual —
Golf — 0.00 0.00
Course
19/30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
General —
Office
Building
Hotel —
Quality —
Restaura it
Condo/T —
ownhou
se
Single —
Family
Housing
Total —
4.7. Offroad Emissions By Equipment Type
4.7.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
0.05 0.05
57.9 57.9
1.94 1.94
0.09 0.09
0.87 0.87
60.8 60.8
Equipm
ent
Type
TOG
ROG
NOx
CO
SO2
PM10E
PM10D
PM10T
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Daily,
Summer
(Max)
Total
Daily,
Winter
(Max)
Total
Annual
Total
4.8. Stationary Emissions By Equipment Type
20 / 30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
4.8.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Equipm
ent
Type
Daily,
Summer
(Max)
Total
Daily,
Winter
(Max)
Total
Annual
Total
TOG
ROG
NOx
CO
SO2
PM10E
PM1OD
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
4.9. User Defined Emissions By Equipment Type
4.9.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Equipm
ent
Type
Daily,
Summer
(Max)
Total
Daily,
Winter
(Max)
Total
Annual
TOG
ROG
NOx
CO
SO2
PM10E
PM1OD
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
21 / 30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
Total
4.10. Soil Carbon Accumulation By Vegetation Type
4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Vegetati
on
TOG
ROG
NOx
CO
SO2
PM10E
PM1OD
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Daily,
Summer
(Max)
Total
Daily,
Winter
(Max)
Total
Annual
Total
4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Land
Use
Daily,
Summer
(Max)
Total
Daily,
Winter
(Max)
Total
TOG
ROG
NOx
CO
SO2
PM10E
PM1OD
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Annual
22/30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
Total
4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)
Species
Daily,
Summer
(Max)
Avoided
Subtotal
Sequest
ered
Subtotal
TOG
Remove —
d
Subtotal
Daily,
Winter
(Max)
Avoided
Subtotal
Sequest
ered
Subtotal
Remove
d
Subtotal
Annual —
ROG
NOx
CO
SO2
PM10E
PM1OD
PM1OT
PM2.5E
PM2.5D
PM2.5T
BCO2
NBCO2
CO2T
CH4
N20
CO2e
Avoided —
23 / 30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
Subtotal
Sequest
ered
Subtotal
Remove
d
Subtotal
5. Activity Data
5.9. Operational Mobile Sources
5.9.1. Unmitigated
Land Use Type
Trips/Weekday
Trips/Saturday
Trips/Sunday
Trips/Year
VMT/Weekday
VMT/Saturday
VMT/Sunday
VMT/Year
Golf Course
General Office
Building
General Office
Building
1,094
0.00
716
0.00
680
0.00
358,038
0.00
0.00 0.00 0.00 0.00
16,219
0.00
10,619
0.00
0.00 0.00
10,085
0.00
5,308,218
0.00
0.00 0.00
Hotel 1,230 1,205 875 429,157 18,236 17,865 12,979 6,362,611
Quality Restaurant 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Condo/Townhouse 504 509 457 181,792 6,898 6,971 6,248 2,487,821
Single Family 273 276 248 98,584 3,741 3,781 3,388 1,349,118
Housing
Single Family 877 886 794 316,148 11,997 12,124 10,866 4,326,482
Housing
Single Family 1,822 1,841 1,650 657,048 24,933 25,197 22,582 8,991,697
Housing
General Office 2,701 613 28.0 737,605 40,045 9,086 415 10,935,617
Building
24/30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
5.10. Operational Area Sources
5.10.1. Hearths
5.10.1.1. Unmitigated
5.10.2. Architectural Coatings
Residential Interior Area Coated (sq
ft)
1631036.25
Residential Exterior Area Coated (sq
ft)
Non -Residential Interior Area Coated
(sq ft)
Non -Residential Exterior Area
Coated (sq ft)
543,679
514,662
171,554
Parking Area Coated (sq ft)
5.10.3. Landscape Equipment
Season
Snow Days
Summer Days
5.11. Operational Energy Consumption
5.11.1. Unmitigated
Electricity (kWh/yr) and CO2 and CH4 and N20 and Natural Gas (kBTU/yr)
Unit
day/yr
day/yr
Value
0.00
180
Land Use
Golf Course
General Office Building
General Office Building
Hotel
Quality Restaurant
Condo/Townhouse
Single Family Housing
Electricity (kWh/yr)
0.00
646,552
2,091,785
2,462,801
506,864
513,040
270,838
CO2
457
457
457
457
457
457
457
CH4
0.0330
0.0330
0.0330
0.0330
0.0330
0.0330
0.0330
N20
0.0040
0.0040
0.0040
0.0040
0.0040
0.0040
0.0040
Natural Gas (kBTU/yr)
0.00
182,179
589,403
7,703,186
795,873
1,459,547
1,031,365
Single Family Housing
868,550
457
0.0330
0.0040
3,307,481
25 / 30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
Single Family Housing
General Office Building
2,362,829
1,521,298
457 0.0330 0.0040
457 0.0330 0.0040
5.12. Operational Water and Wastewater Consumption
5.12.1. Unmitigated
8,997,771
428,657
Land Use
Indoor Water (gal/year)
Outdoor Water (gal/year)
Golf Course
General Office Building
General Office Building
Hotel
Quality Restaurant
Condo/Townhouse
Single Family Housing
Single Family Housing
Single Family Housing
General Office Building
5.13. Operational Waste Generation
5.13.1. Unmitigated
0.00
3,021,474
9,775,356
3,906,483
2,276,503
2,847,164
1,179,539
3,782,661
10,290,465
7,109,350
0.00
31,902
103,211
469,140
14,074
170,183
129,702
415,940
1,131,535
75,062
Land Use
Waste (ton/year)
Cogeneration (kWh/year)
Golf Course
General Office Building
General Office Building
Hotel
Quality Restaurant
Condo/Townhouse
4.80
15.8
51.2
84.3
6.84
51.7
26 / 30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
Single Family Housing
Single Family Housing
Single Family Housing
General Office Building
26.6
85.0
232
37.2
5.14. Operational Refrigeration and Air Conditioning Equipment
5.14.1. Unmitigated
Land Use Type
Equipment Type
Refrigerant
GWP
Golf Course
Golf Course
General Office
Building
General Office
Building
General Office
Building
General Office
Building
Hotel
Hotel
Hotel
Quality Restaurant
Other commercial NC
and heat pumps
Stand-alone retail
refrigerators and
freezers
Household
refrigerators and/or
freezers
Other commercial NC
and heat pumps
Household
refrigerators and/or
freezers
Other commercial A/C
and heat pumps
Household
refrigerators and/or
freezers
Other commercial NC
and heat pumps
Walk-in refrigerators
and freezers
Household
refrigerators and/or
freezers
R-410A
R-134a
R-134a
R-410A
R-134a
R-410A
R-134a
R-410A
R-404A
R-134a
2,088
1,430
1,430
2,088
1,430
2,088
1,430
2,088
3,922
1,430
Quantity (kg)
Operations Leak Rate
Service Leak Rate
Times Serviced
< 0.005
0.04
0.02
< 0.005
0.02
< 0.005
0.00
1.80
< 0.005
0.00
4.00
1.00
0.60
4.00
0.60
4.00
0.60
4.00
7.50
0.60
4.00
0.00
0.00
4.00
0.00
4.00
0.00
4.00
7.50
0.00
18.0
1.00
1.00
18.0
1.00
18.0
1.00
18.0
20.0
1.00
27/30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
Quality Restaurant Other commercial A/C R-410A 2,088 1.80 4.00 4.00 18.0
and heat pumps
Quality Restaurant Walk-in refrigerators R-404A 3,922 < 0.005 7.50 7.50 20.0
and freezers
Condo/Townhouse Average room A/C & R-410A 2,088 < 0.005 2.50 2.50 10.0
Other residential A/C
and heat pumps
Condo/Townhouse Household R-134a 1,430 0.12 0.60 0.00 1.00
refrigerators and/or
freezers
Single Family Housing Average room NC & R-410A 2,088 < 0.005 2.50 2.50 10.0
Other residential A/C
and heat pumps
Single Family Housing Household R-134a 1,430 0.12 0.60 0.00 1.00
refrigerators and/or
freezers
Single Family Housing Average room NC & R-410A 2,088 < 0.005 2.50 2.50 10.0
Other residential A/C
and heat pumps
Single Family Housing Household R-134a 1,430 0.12 0.60 0.00 1.00
refrigerators and/or
freezers
Single Family Housing Average room A/C & R-410A 2,088 < 0.005 2.50 2.50 10.0
Other residential NC
and heat pumps
Single Family Housing Household R-134a 1,430 0.12 0.60 0.00 1.00
refrigerators and/or
freezers
General Office Household R-134a 1,430 0.02 0.60 0.00 1.00
Building refrigerators and/or
freezers
General Office Other commercial A/C R-410A 2,088 < 0.005 4.00 4.00 18.0
Building and heat pumps
5.15. Operational Off -Road Equipment
28 / 30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
5.15.1. Unmitigated
Equipment Type
Fuel Type
Engine Tier
Number per Day
Hours Per Day
Horsepower
Load Factor
5.16. Stationary Sources
5.16.1. Emergency Generators and Fire Pumps
Equipment Type
Fuel Type
Number per Day
Hours per Day
Hours per Year
Horsepower
Load Factor
5.16.2. Process Boilers
Equipment Type
Fuel Type
Number
Boiler Rating (MMBtu/hr)
Daily Heat Input (MMBtu/day)
Annual Heat Input (MMBtu/yr)
5.17. User Defined
Equipment Type
Fuel Type
5.18. Vegetation
5.18.1. Land Use Change
5.18.1.1. Unmitigated
Vegetation Land Use Type
Vegetation Soil Type
Initial Acres
Final Acres
5.18.1. Biomass Cover Type
5.18.1.1. Unmitigated
Biomass Cover Type
Initial Acres
Final Acres
5.18.2. Sequestration
29 / 30
SilverRock Proposed Project Operations Custom Report, 7/31/2025
5.18.2.1. Unmitigated
Tree Type
Number
Electricity Saved (kWh/year)
Natural Gas Saved (btu/year)
8. User Changes to Default Data
Screen
Justification
Land Use
Operations: Vehicle Data
Operations: Hearths
Assumed 1-% of building area is landscaped.
Trip rates calculated based on daily trips provided by Fehr & Peers using ITE 11th Edition.
Some office and restaurant uses included in hotel trips.
No wood burning fireplaces or stoves included in the proposed Project.
30 / 30