CC Resolution 2004-132RESOLUTION NO. 2004-132
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF
LA QUINTA, CALIFORNIA, CERTIFYING A MITIGATED
NEGATIVE DECLARATION OF ENVIRONMENTAL IMPACT
FOR ENVIRONMENTAL ASSESSMENT 2004-519
PREPARED FOR THE EISENHOWER DRIVE BRIDGE AND
DRAINAGE IMPROVEMENTS, PROJECT NO. 2001-06
ENVIRONMENTAL ASSESSMENT 2004-519
APPLICANT: CITY OF LA QUINTA
WHEREAS, the City Council of the City of La Quinta, California, did on
the 16th day of November, 2004 consider Environmental Assessment 2004-519 for
the Eisenhower Drive Bridge and Drainage Improvements, Capital Improvement Project
No. 2001-06 (the "Project"); and
WHEREAS, said Environmental Assessment has complied with the
requirements of "The Rules to Implement the California Environmental Quality Act of
1970" (as amended; Resolution 83-68 adopted by the La Quinta City Council) in that'
r-- the Community Development Department has prepared an Initial Study (EA 2004-519)
and has determined that although the Project could have a significant adverse impact
on the environment, there would not -be a significant effect in this case because
appropriate mitigation measures were made a part of the Assessment and included in
the conditions of approval and a Mitigated Negative Declaration of environmental
impact should be filed; and
WHEREAS, said City Council did find the following facts, findings, and
reasons to justify certification of said Environmental Assessment:
1. The proposed Project will not be detrimental to the health, safety, or general
welfare of the community, either indirectly, or directly, in that no significant
unmitigated impacts were identified by Environmental Assessment 2004-519.
2. 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. The project is located in an urbanized area that is built
out. No habitat suitable to support special status plant or wildlife species exists
on or adjacent to the site.
Resolution No. 2004-132
EA 2004-519 - Eisenhower Drive Bridge
Adopted: November 16, 2004
Page 2
3. There is no evidence before the City that the proposed Project will have the
potential for an adverse effect on wildlife resources or the habitat on which the
wildlife depends.
4. The proposed Project does not have the potential to achieve short-term
environmental goals, to the disadvantage of long-term environmental goals, as
no significant effects on environmental factors have been identified by the
Environmental Assessment. The Project is being constructed to achieve the
long term goal of reducing or preventing traffic congestion in the project vicinity
and the City's circulation system.
5. The proposed Project will not result in impacts which are individually limited or
cumulatively considerable when considering planned or proposed development in
the immediate vicinity, as development patterns in the area will not be
significantly affected by the proposed Project. The Project is a roadway
improvement project that has been anticipated in the General Plan.
6. The proposed Project may result in impacts to air quality, noise and traffic
during construction; however these impacts will be temporary and short in
duration and will also be mitigated to a less than significant level with the
mitigations measures contained herein.
7. There is no substantial evidence in light of the entire record that the Project may
have a significant effect on the environment.
8. The City Council has considered Environmental Assessment 2004-519 and the
Environmental Assessment reflects the independent judgment of the City.
9. The City has on the basis of substantial evidence, rebutted the presumption of
adverse effect set forth in 14 CAL Code Regulations 753.5(d).
10.. The location and custodian of the City's records relating to this Project is the
Community Development Department located at 78-495 Calle Tampico,
La Quinta, California.
NOW THEREFORE, BE IT RESOLVED by the City Council of the
City of La Quinta, California, as follows:
1. That the above recitations are true and correct and constitute the findings of the
City Council for this Environmental Assessment.
Resolution No. 2004-132
EA 2004-519 - Eisenhower Drive Bridge
Adopted: November 16, 2004
Page 3
2. That Environmental Assessment 2004-519 reflects the independent judgement
of the City.
PASSED, APPROVED and ADOPTED at a regular meeting of the La Quinta
City Council held on this 16' day of November 2004, by the following vote, to wit:
AYES: Council Members Henderson, Osborne, Perkins, Sniff, Mayor Adolph
NOES: None
ABSENT: None
ABSTAIN: None
DON ADOLPH, Mayor
City Iof La Quinta, California
ATTEST:
JU E . GREEK, CMC, City Clerk
City of La Quinta, California
(CITY SEAL)
APPROVED AS TO FORM:
r--
A".ATHRI JENSON,City At rneyQuinta, Califor
Environmental Checklist Form
1. Project Title: Eisenhower Drive Bridge and Drainage Improvements
2. Lead Agency Name and Address: City of La Quints
78-495 Calle Tampico
La Quinta, CA 92253.
3. Contact Person and Phone Number: Oscar Orci, (760) 777-7125
4. Project Location: The project site consists of Eisenhower Drive from Avenue 50 to
approximately 700 feet north of Calle Tampico in the City of La Quinta, Riverside County.
The project site encompasses approximately 2.8 acres, primarily within existing right-of-way
(ROW) for the roadway easement, which varies in width from 32 to 70 feet. The site is
shown on the U.S. Geological Survey's La Quinta 7.5-minute topographic quadrangle map
as a portion of Section 1, Township 6, South/Range 6 East, San Bernardino Baseline and
Meridian. The regional location and local vicinity of the proposed project are shown on
Exhibits 1 and 2, respectively. An aerial of the site is provided on Exhibit 3.
5. Project Sponsor's Name and Address: City of La Quinta
78-495 Calle Tampico
La Quinta, CA 92253
6. General Plan Designation: Golf Course Open Space (G), Village Commercial (VC), Low -
Density Residential (LDR), and Watercourse/Flood Control (W)
7. Zoning: Golf Course District (GC), Low -Density Residential District (RL), and Floodplain
District (FP)
8. Description of Project: The project involves the widening of Eisenhower Drive from two to
four lanes from Avenue 50 to approximately 700 feet north of Calle Tampico in the City of La
Quinta. The objectives of the project are to improve the level of vehicular service on
Eisenhower Drive and to reduce response times for emergency vehicles. The proposed
project would improve .the existing two-lane Eisenhower Drive to the Primary Arterial-B
roadway designation identified in the Traffic and Circulation Element of the La Quinta
General Plan. The Primary Arterial-B Designation is a 100-foot-wide roadway with four 12-
foot-wide travel lanes, a 12-foot-wide median, 7-foot-wide bike Lanes adjacent to the
parkway curb face, and 12-foot-wide parkways (i.e., meandering sidewalks and
landscaping). In addition to the street widening, the bridge over the La Quinta Evacuation
Channel would be widened from its existing 40 foot width to 88 feet to match the realigned
paved width of Eisenhower Drive. To support the widened roadway and parkway on the
east side of Eisenhower Drive, a retaining wall would be constructed from the bridge to
approximately 600 feet to the north. Three alternative configurations for the widening are
currently proposed. The alternatives are discussed below. The project area of disturbance
is very similar for all three alternatives. The construction would occur almost entirely within
City -owned right-of-way (ROW) and Coachella Valley Water District ROW, with the
exception of approximately 8,930 square feet of ROW that would need to be acquired on
the west side of Eisenhower Drive on areas that are currently adjacent to the existing edge
of paved roadway and used for a sidewalk and landscaping. No existing habitable
structures would be directly impacted by project implementation. Project design and areas
of impact are shown on Exhibit 4.
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Eisenhower Drive Bridge and Drainage Improvements
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Project Design and Impacts Exhibit 4
Eisenhower Drive Bridge and Drainage Improvements
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Alternative 1
Alternative 1 would widen Eisenhower Drive approximately 12 feet on the west side and
would widen the existing bridge approximately 42 feet on the east side and 6 feet on the
west side, providing a total bridge width of approximately 88 feet. The widened bridge
structure would be a cast -in -place reinforced concrete slab, similar to the existing bridge. It
is anticipated that the column supports for the bridge will be 24-inch diameter cast -in -drilled -
holes (CIDH) piles that will be located on the banks of the La Quinta Evacuation Channel.
This alternative would provide four lanes (two in each direction of travel) with a 12-foot-wide
raised median separating the northbound and southbound directions of travel, a left -turn
lane from northbound Eisenhower Drive onto Calle Mazatlan, and a left -turn lane from
southbound Eisenhower Drive into the entrance for the La Quinta Village Apartments (under
construction). In addition, this alternative would provide sidewalks for the full length of the
project improvements and a seven -foot -wide bike lane on each side of the roadway.
Alternative 2
Alternative 2 would widen the east side of the bridge by approximately 42 feet providing a
total bridge width of approximately 82 feet. The widened bridge structure would be a cast -
in -place concrete slab, similar to the existing bridge. It is anticipated the column supports
for the bridge will be 24-inch diameter CIDH piles that will be located in the La Quinta
Evacuation Channel. The median width for this alternative would be 6 feet, widening to
12 feet wide at the two left -turn lanes at Calle Mazatlan and the La Quinta Apartments. The
taper in the roadway is necessary to meet the location of the existing west curb face on the
existing bridge. The taper will shift the roadway approximately six feet to the east compared
to Alternative 1; however, ROW requirements are identical for both alternatives. All other
project features would be identical to Alternative 1. Alternative 2 is the City of La Quinta's
preferred alternative.
Alternative 3
The alignment of Alternative 3 is identical to Alternative 2. This alternative would widen the
bridge using a precast, prestressed girder structure that will span the La Quinta Evacuation
Channel without piles in the channel. The existing bridge would serve as the southbound
lanes and the new bridge would be constructed to serve as the northbound lanes. The
roadway profile for the northbound traffic at the bridge would be approximately two feet
higher than the southbound lanes. This is a result of the increased depth of the widened
bridge structure for this alternative. All other roadway improvements associated with
Alternatives 1 and 2 are applicable to -Alternative 3.
All three alternatives incorporate a landscaping component that would follow the City of La
Quinta "Desert Palette," featuring decorative bridge railings and median landscaping
treatments including desert shrubs, trees, and palms. Examples of the desert palette are
shown on Exhibit 5.
The current street lighting would be replaced by a new street lighting system as a project
component for all three alternatives. In accordance with the City of La Quinta Municipal
Code, street lighting would be fully shielded to direct light onto the road surface and prevent
lighting spillover into adjacent residences.
No stormwater drainage improvements are proposed with any of the project alternatives,
with the exception of setback and reconstruction of existing storm drain inlets on
Eisenhower Drive. The addition of approximately 0.75 acre of paving would add a negligible
amount of street runoff to flows entering storm drains that currently convey flows to the La
2
Photo 2: Desert Palette bridge treatment and landscaping.
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Photo 2: Desert Palette median landscaping.
Proposed Landscaping
Eisenhower Drive Bridge and Drainage Improvements
Source: Moffatt 3 Nichol engineering
Exhibit 5
CONSULTING
Quinta Evacuation Channel. The additional flows would be adequately conveyed by
existing storm drain capacity and no improvements are proposed with the project.
The project would be constructed in one phase. Eisenhower Drive and the bridge would
remain open to through -traffic throughout construction for all alternatives. Construction
vehicles would be staged off -site at one of three alternative locations. The City shall either
identify a location identified for use as a Contractor staging area or the bid documents will
identify the Contractor's responsibirity to obtain the construction staging area. Some heavy
equipment, such as the drill rig for the CIDH pipes, may remain at the site overnight. All
loose construction material shall be removed from the La Quinta Evacuation Channel and
site at the end of each workday. Construction vehicle staging area alternatives are
described below:
1. A vacant parcel adjacent to the north of Montezuma Park approximately 1 /3 mile to
the south of the project site. This staging area alternative is bound to the north by
seven single-family residential units and two multiple -family residential apartment
buildings opposite to the north of Avenida Villa, to the east by Avenida Mendoza and
vacant land, to the south by Avenida Montezuma and Montezuma Community Park,
and to the west by the La Quinta Studio and Gallery and Eisenhower Drive.
2. A vacant parcel adjacent to the south of Montezuma Park approximately 1/3 mile to
the south of the project site. This staging area alternative is bound to the north by
Avenida Montezuma and Montezuma Community Park, to the east by vacant land,
to the south by Avenida Martinez and four single-family residential units, and to -the
west by Eisenhower Drive and single-family residential units opposite to the west of
Eisenhower Drive.
3. The City of La Quinta Corporation Yard is located approximately one mile to the
southeast of the project site. This staging area alternative is bound to the north by
vacant land, to the east by a fire station, to the south by Frances Hack Lane and
low -density single-family residential, and to the west by Fritz Burns Park.
The locations of the staging areas relative to the project site and anticipated construction
vehicle routes are presented on Exhibit 6.
9. Surrounding Land Uses and Setting: The project site consists of the existing two-lane
Eisenhower Drive and bridge over the La Quinta Evacuation Channel between Avenue 50
and approximately 700 feet north of Calle Tampico. Topography , is relatively flat with
elevations ranging from 35 to 55 feet above mean sea level (msl). Surrounding land uses
are described below.
North: Eisenhower Drive continues to the north of the proposed project segment from the
intersection with Avenue 50/Avenida Mazatlan and is currently being improved to a
four -lane facility in accordance with the General Plan Traffic and Circulation Element
build -out assumptions. The Santa Rosa Cove Townhouse complex is located to the
northwest of the project site. Tennis courts of the La Quinta Country' Club are
located to the northeast of the project site.
South: Eisenhower Drive continues to the south of the proposed project segment. The La
Quinta Country Club Golf Course is located to the southwest of the project site.
Vacant land is located to the southeast of the project site and is the proposed site
for the Calle Tampico Elementary School.
East: To the south of the existing bridge, the project site is bound to the east by the La
Quinta Village Apartments currently under construction. To the north of the existing
bridge, the project site is bound to the east by the La Quints Country Club Golf
Course and the Haciendas at La Quinta (low -density residential).
West: To the south of the existing bridge, the project site is bound to the west by the La
Quinta Country Club Golf Course. To the north of the existing bridge, the project
site is bound to the west by the Santa Rosa Cove Townhomes (medium -density
residential).
10. Other agencies whose approval is required (e.g., permits, financing approval, or
participation agreement).
Coachella Valley Water District (approval of encroachment permit for work in the La Quinta
Evacuation Channel).
4
Environmental Factors Potentially Affected:
The environmental factors checked below would be potentially affected by this project, involving at
least one impact that is a "Potentially Significant Impact" as indicated by the checklist on the
following pages.
Aesthetics
Agriculture Resources
Air Quality
Biological Resources
Cultural Resources
Geology and Soils
Hazards and Hazardous
Materials
Hydrology and Water
Quality
Land Use Planning
Mineral Resources
Noise
Population and Housing
Public Services
Recreation
Transportation/Traffic
Utilities and Service
Systems
Mandatory Findings
Determination (To be completed by the Lead Agency.) On the basis of this initial evaluation:
I find that the proposed project COULD NOT have a significant effect on the environment, and a
NEGATIVE DECLARATION will be prepared.
I find that although the proposed project could have a significant effect on the environment, there will
not be a significant effect in this case because revisions in the project have been made by or agreed
to by the applicant. A MITIGATED NEGATIVE DECLARATION will be prepared.
I find that the proposed project MAY have a significant effect on the environment, and an
ENVIRONMENTAL IMPACT REPORT (EIR) is required.
I find that the proposed project MAY have a 'potentially significant impact" or `potentially significant
unless mitigated" on the environment, but at least one effect 1) has been adequately analyzed in an
earlier document pursuant to applicable legal standards, and 2) has been addressed by mitigation
measures based on the earlier analysis as described on attached sheets. An EIR is required, but it must
analyze only the effects that remain to be addressed.
I find that although the proposed project could have a significant effect on the environment, because all
potentially significant effects (a) have been analyzed adequately in an earlier EIR pursuant to applicable
standards, and (b) have been avoided or mitigated pursuant to that earlier EIR, including revisions or
mitigation measures that are imposed upon the proposed project, nothing further is required.
Sign re Date
5
Evaluation of Environmental Impacts:
1. A brief explanation is required for all answers except "No Impact" answers that are
adequately supported by the information sources a lead agency cites in the parentheses
following each question. A "No Impact" answer is adequately supported if the reference
information sources show that the impact simply does not apply to projects like the one
involved (e.g., the project falls outside a fault rupture zone). A "No Impact" answer should
be explained where it is based on project -specific factors as well as general standards (e.g.,
the project will not expose sensitive receptors to pollutants, based on a project -specific
screening analysis).
2. All answers must take account of the whole action involved, including off -site as well as on -
site, cumulative as well as project -level, indirect as well as direct, and construction as well
as operational impacts.
3. "Potentially Significant Impact" is appropriate if there is substantial evidence that an effect is
significant. If there are one or more "Potentially Significant Impact" entries when the
determination is made, an EIR is required.
4. "Negative Declaration: Potentially Significant Unless Mitigation Incorporated" applies where
the incorporation of mitigation measures has reduced an effect from "Potentially Significant
Impact" to a "Less Significant Impact." The lead agency must describe the mitigation
measures, and briefly explain how they reduce the effect to a less than significant level
(mitigation measures from Section XVIII, "Earlier Analysis," may be cross-referenced).
5. Earlier analysis may be used where, pursuant to the tiering, program EIR, or other California
Environmental Quality Act (CEQA) process, an effect has been adequately analyzed in an
r-- earlier EIR or negative declaration. Section 15063(c)(3)(D). Earlier analysis is discussed in
Section XVIII at the end of the checklist.
6. Lead agencies are encouraged to incorporate into the checklist references to information
sources for potential impacts (e.g., general plans, zoning ordinances). Reference to a
previously prepared or outside document should, where appropriate, include a reference to
the page or pages where the statement is substantiated.
7. Supporting Information Sources: A source list should be attached, and other sources used
or individuals contacted should be cited in the discussion.
8. The analysis of each issue should identify a) the significance criteria or threshold used to
evaluate each question; and b) the mitigation measure'identified, if any, to reduce the
impact to less than significant.
Issues (and Supporting Information Sources)
Would the proposal result in potential impacts involving:
1.
2.
Potentially
Significant
Impact
AESTHETICS. Would the project:
a) Have a substantial adverse effect on a
scenic vista? (General Plan Exhibit
3.6)
b) Damage scenic resources including,
but not limited to, trees, rock
outcroppings, and historic buildings
within a state scenic highway? (Site
topography, Site Visit)
c) Substantially degrade the existing
visual character or quality of the site
and its surroundings? (Project
Description)
d) Create a new source of substantial
light or glare which would adversely
affect day or nighttime views in the
area? (Project Description)
AGRICULTUR
Potentially
Significant Less Than
Unless Significant No
Mitigated Impact Impact
AL RESOURCES. In determining whether impacts to agricultural resources are
significant environmental effects, lead agencies may refer to the California Agricultural Land
Evaluation and Site Assessment Model prepared by the California Dept. of Conservation as an
optional model to use in assessing impacts on agriculture and farmland. Would the project:
a) Convert Prime Farmland, Unique
Farmland, or Farmland of Statewide
Importance (Farmland) to non-
agricultural use? (Site Visit)
b) Conflict with existing zoning for
agricultural use, or a Williamson Act
contract? (Zoning Map)
c) Involve other changes in the existing
environment which, due to their
location or nature, could individually or
cumulatively result in loss of
Farmland, to nonagricultural use?
(Project Description, Site Visit)
X
X
X
Potentially
Potentially Significant Less Than
Significant Unless Significant No
Impact Mitigated Impact Impact
3. AIR QUALITY. Where available, the significance criteria established by the applicable air
quality management or Air pollution control district may be relied upon to make the following
determinations. Would the project:
a) Conflict with or obstruct
implementation of the applicable Air
Quality Attainment Plan or Congestion
Management Plan? (SCAQMD
URBEMIS)
b) Violate any stationary source air
quality standard or contribute to an
existing or projected air quality
violation? (SCAQMD URBEMIS)
c) Result in a 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)?
(SCAQMD CEQA Handbook, 2002
PM10 Plan for the Coachella Valley,
URBEMIS)
d) Expose sensitive receptors to
substantial pollutant concentrations?
(Project Description)
e) Create objectionable odors affecting a
substantial number of people?
(Project Description)
4. BIOLOGICAL RESOURCES. Would the project:
a) Have a substantial adverse impact,
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 Game (CDFG) or (USFWS)?
(BonTerra Consulting 9/18/2003)
b) Have a substantial adverse impact on
any riparian habitat or other sensitive
natural community identified in local or
regional plans, policies, regulations or
by the CDFG or U.S. Fish and Wildlife
Service? (BonTerra Consulting
9/18/2003)
8
X
X
9
X
X
X
X
c) Adversely impact federally protectei
wetlands (including, but not limited tc
marsh, vernal pool, coastal, etc.
either individually or in combinatior
with the known or probable impacts o
other activities through direct removal
filling, hydrological interruption, of
other means? (BonTerra Consultinc
9/18/2003)
d) Interfere substantially with the
movement of any resident or migratory
fish or wildlife species or with
established resident or migratory
wildlife corridors, or impede the use of
wildlife nursery sites? (BonTerra
Consulting 9/18/2003)
e) Conflict with any local policies or
ordinances protecting biological
resources such as a tree preservation
policy or ordinance? (BonTerra
Consulting 9/18/2003)
f) Conflict with the provisions of an
adopted Habitat Conservation Plan,
Natural Conservation Community
Plan, or other approved local,
regional, or state habitat conservation
plan? (BonTerra Consulting
9/18/2003)
5. CULTURAL RESOURCES. Would the prc
a) Cause a substantial adverse change
in the significance of a historical
resource which is either listed or
eligible for listing on the National
Register of Historic Places, the
California Register of Historic
Resources, or a local register of
historic resources? (BonTerra
Consulting 10/17/2003)
9
Potentially
Potentially Significant Less Than
Significant Unless Significant No
Im act Mitigated Im act Impact
i
f X
X
X.
X
ject:
6.
b) Cause a substantial adverse change
in the significance of a unique
archaeological resources (i.e., an
artifact, object, or site about which it
can be clearly demonstrated that,
without merely adding to the current
body of knowledge, there is a high
probability that it contains information
needed to answer important scientific
research questions, has a special and
particular quality such as being the
oldest or best available example of its
type, or is directly associated with a
scientifically recognized important
prehistoric or historic event or
person)? (BonTerra Consulting
10/17/2003)
c) Disturb or destroy a unique
paleontological resource or site?
(Master Environmental Assessment
Exhibit 5.9)
d) Disturb any human remains, including
those interred outside of formal
cemeteries? (BonTerra 'Consulting
10/17/2003)
GEOLOGY AND SOILS. Would the project:
a) Expose people or structures to
potential substantial adverse effects,
including the risk of loss, injury, or
death involving:
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? (Master
Environmental Assessment)
Strong seismic ground shaking?
(Master Environmental Assessment
Section 6.3.5)
Seismic -related ground failure,
including liquefaction? (DMG 2000)
Landslides? (DMG 2000)
b) Result in substantial soil erosion or the
loss of topsoil? (Project Description,
Site Topography)
10
Potentially
Potentially Significant Less Than
Significant Unless Significant No
Impact Mitigated Impact Impact
X
X
X
U
X
X
X
X
Q
7.
c) Be located on a geological unit or soil
that is unstable, or that would become
unstable as a result of the project, and
potentially result in on- or off -site
landslides, lateral spreading,
subsidence, liquefaction or collapse?
(Master Environmental Assessment
Exhibit 6.3, DMG 2000)
d) Have soils incapable of adequately
supporting the use of septic tanks or
alternative waste . water disposal
system where sewers are not
available for the disposal of waste
water? (Project Description)
Potentially
Potentially Significant
Significant Unless
Imn2ef ul**I eft6. 2
Less Than
Significant No
X
X
HAZARDS AND HAZARDOUS MATERIALS. Would the project:
a) Create a significant hazard to the
public or the environment through the
routine transport, use, or disposal of
hazardous materials? (Project
Description)
b) Create a significant hazard to the
public or the environment through
reasonably foreseeable upset and
accident conditions involving the likely
release of hazardous materials into
the environment? (Project Description,
EDR 2003)
c) Reasonably be anticipated to emit
hazardous materials, substances, or
waste within one -quarter mile of an
existing or proposed school? (Project
Description, EDR 2003, Site Visit)
d) Is the project located on a site which is
included on a list of hazardous
materials sites complied pursuant to
Government Code Section 65962.5
and, as a result, would it create a
significant hazard to the public or the
environment? (EDR 2003)
e) For a project located within an airport
land use plan or, where such a plan
has not been adopted, within two
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 area? (Master
Environmental Assessment, Site Visit,
Surrounding Land Uses)
11
V
X
X
FA
X
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 area? (Master
Environmental Assessment, Site Visit,
Surrounding Land Uses)
g) Impair implementation of or physically
interfere with an adopted emergency
response plan or emergency
evacuation plan? (Project Description,
Master Environmental Assessment
Section 6.2)
h) Expose people or structures to the risk
of loss, injury or death involving
wildlands fires, including where
wildlands are adjacent to urbanized
areas or where residences are
intermixed with wildlands? (Project
Description)
Potentially
Potentially Significant Less Than
Significant Unless Significant No
Impact Mitigated Impact Imoa
8. HYDROLOGY AND WATER QUALITY. Would the project:
a) Violate Regional Water Quality Control
Board water quality standards or
waste discharge requirements?
(Project Description)
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 (i.e., the
production rate of pre-existing nearby
wells would drop to a level which
would not support existing land uses
or planned uses for which permits
have been granted? (Project
Description)
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?
(Project Description)
12
X
X
Q
Q
X
FA
9.
10.
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? (Project Description)
e) Create or contribute runoff water
which would exceed the capacity of
existing or planned stormwater
drainage systems to control? (Project
Description)
f) Place housing within a 100-year
floodplain, as mapped on a federal
Flood Hazard Boundary or Flood
Insurance Rate Map or other flood
hazard delineation map? (Project
Description)
g) Place within a 100-year floodplain
structures which would impede or
redirect flood flows? (Project
Description)
Potentially
Potentially Significant
Significant Unless
Impact Mitinatorf
Less Than
Significant No
X
X
X
X
LAND USE AND PLANNING. Would the project:
a) Physically divide an established
community? (Project Description) X
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 X
coastal program, or zoning ordinance)
adopted for the purposes of avoiding
or mitigating an environmental effect?
(General Plan, Project Description)
c) Conflict with any applicable habitat
conservation plan or natural
communities conservation plan? X
(General Plan, CVAG)
MINERAL RESOURCES. Would the project:
a) Result in the loss of availability of a
known mineral resource classified
MRZ-2 by the State Geologist that
would be of value to the region and
the residents of the state? (Master
Environmental Assessment Exhibit
5.1)
1
13
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? (General Plan Exhibit
5.1)
11. NOISE. Would the project result in:
12.
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? (Project
Description)
b) Exposure of persons to, or generation
of, excessive groundbome vibration or
groundbome noise levels? (Project
Description)
c) A substantial temporary or periodic
increase in ambient noise levels in the
project vicinity above levels existing
without the project? (Project
Description)
d) For a project located within an airport
land use plan or, where such a plan
has not been adopted, within two
miles of a public airport or public use
airport, would the project expose
people residing or working in the
project area to excessive noise levels?
(General Plan, Project Description)
e) For a project within the vicinity of a
private airstrip, would the project
expose people residing or working in
the project area to excessive levels?
(General Plan, Project Description)
Potentially
Potentially Significant Less Than
Significant Uniess SignMcant No
—impact Mitt aged IMDaCt Im
pa
. X
POPULATION AND HOUSING. Would the project:
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)? (Project Description)
b) Displace substantial numbers of
existing housing, necessitating the
construction of replacement housing
elsewhere? (Project Description)
14
X
X
X
U
X
X
Q
c) Displace substantial numbers of
people, necessitating the construction
of replacement housing elsewhere?
(Project Description)
13. PUBLIC SERVICES. Would the project:
14.
a) 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:
Fire protection? (Project Description,
Master Environmental Assessment
Section 4.3)
Police protection? (Project
Description, Master Environmental
Assessment Section 4.3)
Schools? (Project Description, Master
Environmental Assessment Section
4.2)
Parks? (Project Description, Master
Environmental Assessment Section
4.2)
Other public facilities? (Project
Description, Master Environmental
Assessment Section 4)
RECREATION. Would the project:
a) Increase the use of existing
neighborhood and regional parks or
other recreational facilities such that
substantial physical deterioration of X
the facility would occur or be
accelerated? (Project Description)
b) Include recreational facilities or require
the construction or expansion of
recreational facilities which might have X
an adverse physical effect on the
environment? (Project Description)
Potentially
Potentially Significant Less Than
Significant Unless Significant
No
X
15
X
X
X
X
Q
Potentially
Potentially Significant
Significant Unless
Impact Mitigated
15. TRANSPORTATION/TRAFFIC. Would the project:
16.
a) Cause an increase in traffic which is
substantial in relation to the existing
traffic load and capacity of the street
system, (i.e., result in a substantial
increase in either the number of
vehicle trips, the volume to capacity
ratio on roads, or congestion at
intersections)? (Project Description)
b) Exceed, either individually or
cumulatively, a level of service
standard established by the county
congestion management agency for
designated roads or highways?
(Project Description)
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?
(Project Description)
d) Substantially increase hazards to a
design feature (e.g., sharp curves or
dangerous intersections) or
incompatible uses (e.g., farm
equipment)? (Project Description)
e) Result in inadequate emergency
access? (Project Description)
f) Result in inadequate parking
capacity? (Project Description)
g) Conflict with adopted policies
supporting alternative transportation
(e.g., bus turnouts, bicycle . racks)?
(Project Description)
UTILITIES AND SERVICE SYSTEMS. Would the project:
a) Exceed wastewater treatment
requirements of the applicable
Regional Water Quality Control
Board? (Project Description)
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? (Project Description)
16
Less Than
Significant No
Impact Impact
X
X
X
X
X
X
X
X
X
17
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?
(Project Description)
d) Are sufficient water supplies available
to serve the project from existing
entitlements and resources, or are
new or expanded entitlements
needed? (Project Description)
e) Has the wastewater treatment provider
which serves or may serve the project
determined that it has adequate
capacity to serve the project's
projected demand in addition to the
provider's existing commitments?
(Project Description)
f) Is the project served by a landfill with
sufficient permitted capacity to
accommodate the project's solid
waste disposal needs? (General Plan
Chapter 7, Project Description)
Potentially
Potentially Significant Less Than
Significant Unless Significant Nn
Impact Mitiated Impact Impact
X
. X
X
X
MANDATORY FINDINGS OF SIGNIFICANCE:
a) Does the project have the potential to
degrade the quality of the
environment, substantially reduce the
habitat of a fish or wildlife species,
cause 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 a rare or
endangered plant or animal or
eliminate important examples of the
major periods of California history or
prehistory? (BonTerra Consulting
9/18/03 & 10/17/03)
b) Does the project have the potential to
achieve short-term, to the
disadvantage of long-term,
environmental goals?
X
X
17
Potentially
Potentially Significant Less Than
Significant Unless Significant No
Im
c) Does the project have impacts that are
individually limited, but cumulatively
considerable? ("Cumulatively
considerable" means that the
incremental effects of a project are
considerable when viewed in
connection with the effects of past
projects, the effects of other current
project, and the effects of probable
future projects)?
d) Does the project have environmental
effects which will cause substantial
adverse effects on human beings,
either directly or indirectly?
18. EARLIER ANALYSIS
X
X
Earlier analysis may be used where, pursuant to the tiering, program EIR, or other CEQA
process, one or more effects have been adequately analyzed in an earlier EIR or negative
declaration (Section 15063[c][3][D]). In this case a discussion should identify the following on
attached sheets.
a) Earlier analysis used. Identify earlier analysis and state where they are available for
review.
City of La Quinta General Plan/Master Environmental Assessment (2002), City of La
Quinta (Available for review at the City public library and planning department)
b) Impacts. adequately addressed. Identify which effects from the above checklist were
within the scope of and adequately analyzed in an earlier document pursuant to applicable
legal standards, and state whether such effects were addressed by mitigation measures
based on the earlier analysis.
Not applicable.
c) Mitigation measures. For effects that are "Less than Significant with Mitigation
Incorporated," describe the mitigation measures which were incorporated or refined from
the earlier document and the extent.to which they address site -specific conditions for the
project.
Not applicable.
Environmental Analysis and Initial Study
This initial study analyzes the project as well as its impacts(s) and the level(s) of significance as
required by the State of California Environmental Quality Act (Public Resources Code § 2100 et
seq. "CEQA Statutes" and California Code of Regulations §15000 et seq. "CEQA Guidelines").
State law requires that action on a CEQA document be considered by the decision -maker prior to
approval of the project for which is has been prepared. A Mitigated Negative Declaration has been
designated the appropriate environmental documentation for the proposed project. The following is
an analysis of the subject proposal:
18
1. AESTHETICS -Would the aroiect•
a) Have a substantial adverse effect on a scenic vista?
b) 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 surroundin s?
9
d) Create a new source of substantial light or glare which would adversely affect day or nighttime
views in the area?
No Impact (Sections a-d). The proposed project consists of the improvement of an existing
segment of Eisenhower Drive and bridge in the City of La Quinta between Avenue 50 and Calle
Tampico. These streets are not designated scenic highways and, as such, no scenic highways
would be affected. There would be no effect on a scenic vista and there are no rock outcroppings
and/or historic buildings that would be impacted by implementation of any of the project
alternatives.
Eisenhower Drive is designated a Primary Image Corridor in the City of La Quinta General Plan.
Primary Image Corridors are considered major design statements in the City, and are required to
include landscaped medians, heavily landscaped parkways adjacent to the roadway and within the
ROW, and landscaped setbacks for buildings located next to the ROW. All three project
alternatives will remove some existing front setback landscaping from the roadway ROW. However,
the project includes the installation of landscaping within the public ROW. New 2- to 12-foot-wide
medians are proposed as part of the project design for all three alternatives. Landscaping would
follow the City of La Quinta "Desert Palette" which features decorative bridge railings and median
landscaping treatments including desert shrubs, trees, and palms. The proposed project
landscaping plans will bring the project street segment into conformance with the General Plan
requirements of the Primary Image Corridor designation. Photos of proposed landscaping features
as installed on other street segments within the City are shown on Exhibit 5.
None of the project or landscaping features will include reflective surfaces that could create a
source of glare. The current street lighting would be replaced by a new street lighting system as a
project component. The new street lighting system would be in compliance with City of La Quinta
Department of Public Works design standards. In accordance with the City of La Quinta Municipal
Code, street lighting will be fully shielded to direct light directly onto the road surface and prevent
lighting spillover into adjacent residences. Therefore, proposed street lighting would not be
expected to impact nighttime views of the area.
2. AGRICULTURAL RESOURCES -Would the roiect:
a) Convert Prime Farmland, Unique Farmland, or Farmland of Statewide Importance (Farmland),
to non-agricultural use?
b) Conflict with existing zoning for agricultural use, or a Williamson Act contract?
c) Involve other changes in the existing environment which, due to their location or nature, could
individually or cumulatively result in loss of Farmland, to nonagricultural use?
No Impact (Sections a-c). The proposed project site or potential staging areas are located in an
urbanized area and would not convert farmland to non-agricultural use. No portion of the project
site is covered by a Williamson Act Contract or located on land designated as Prime Farmland,
Unique Farmland, or Farmland of Statewide Importance according to 2000 Natural Resource
19
Conservation Service mapping. No agricultural resources impacts would occur and no mitigation is
required.
3. AIR QUALITY -Would the oroiect:
a) Conflict with or obstruct implementation of the applicable air quality plan or congestion
management plan?
b) Violate any stationary source air quality standard or contribute to an existing or projected air
quality violation?
c) Result in a net increase of any criteria pollutant for which the project region is in non -attainment
under an applicable federal or state ambient air quality standard?
d) Expose sensitive receptors to pollutant concentrations?
e) Create objectionable odors affecting a substantial number of people?
Less Than Significant Impact (Sections a-e). California is divided by the California Air
Resources Board (CARB) into air basins which share similar meteorological and topographical
features. The City of La Quinta is in the Salton Sea Air Basin (SSAB), which includes eastern
Riverside and Imperial counties. The SSAB's climate and topography, high winds, and fine sandy
soils are conducive to the formation of high concentrations of airborne particulate matter.
Additionally, the predominantly westerly winds transport pollutants from the South Coast Air Basin
(SCAB) into the SSAB.
The Riverside County portion of the SSAB is under the jurisdiction of the South Coast Air Quality
Management District (SCAQMD). The pollutants for which the eastern Riverside County portion of
the. SSAB is designated a non -attainment area for national ambient standards are ozone (03) and
fine particulate matter (PM,o). Ozone is a colorless, odorless pollutant formed by a chemical
reaction between volatile organic compounds (VOCs) and oxides of nitrogen (NOX) in the presence
of sunlight. The primary sources of VOCs and NOx are mobile, including cars, trucks, buses, and
agricultural and construction equipment. PM,o consists of fugitive dust caused by soil disturbances,
such as construction grading, and causes a greater health risk than larger -sized particles because
these fine particles can be inhaled more easily and irritate the lungs.
Air quality modeling has shown that ozone in the Coachella Valley originates in the SCAB and is
transported into the SSAB by the predominantly westerly winds. The pollutant transport pathway
from the SCAB to the SSAB is through the Banning Pass to the Coachella Valley. Downwind of the
source region, exceedances occur later in the day as the ozone cloud is transported downwind. If
the peak were locally generated, it would occur near mid -day and not in the late afternoon or early
evening. As a result, the SCAQMD is focusing the regulation of ozone on the SCAB.
Between. 1999 and 2001, the Coachella Valley exceeded the federal annual average PM,o national
ambient air quality standards (NAAQS). Because the Coachella Valley was unable to demonstrate
attainment of the NAAQS through the 2001 attainment year, SCAQiMD prepared the 2002
Coachella Valley PM,o State Implementation Plan (CVSIP). The CVSIP includes control program
enhancements that meet the Most Stringent Measure (MSM) requirements and a request for
extension of the PM,o attainment date. Jurisdictions within the Coachella Valley are required to
adhere to the requirements outlined in the CVSIP, including preparation of a fugitive dust control
plan prior to issuance of grading permits.
r--
A project's air quality impacts can be separated into short-term impacts from construction and long-
term permanent impacts from project operations. Construction impacts can include airborne dust
k
from grading, demolition, and dirt hauling, and gaseous emissions from heavy equipment, delivery
and dirt hauling trucks, employee vehicles, and paints and coatings.
20
The project would not generate new long-term traffic beyond that assumed in the City's General
Plan projections and it would not result in any long-term regional or local air quality impacts. The
proposed roadway improvements are intended to reduce congestion and increase traffic flow. As
such, the proposed project is not considered a traffic -generating use. There would likely be a
potentially beneficial effect on existing carbon monoxide concentrations in the vicinity of the project
associated with lowered congestions and higher vehicle speeds. Therefore, the air quality analysis
is focused on the short-term construction impacts of the proposed project.
To determine whether emissions resulting from grading and construction of a project are significant,
the SCAQMD recommends significance thresholds in its CEQA Air Quality Handbook. The City has
determined that these thresholds are appropriate for the project in order to assure regional
consistency and because they are based on the best available scientific information. The pollutants
addressed by the SCAQMD thresholds include carbon monoxide (CO), sulfur oxides (SOx), nitrogen
oxides (NOX), particulate matter (PM,o), and reactive organic compounds (ROC). The daily
thresholds and expected grading and construction emissions for each of the pollutants are
presented in Table 1. Air quality impacts for the three proposed project alternatives are expected to
be similar because construction for each alternative will use the same equipment and involve the
same amount of paving.
TABLE 1
PROJECT EMISSIONS
(MAXIMUM POUNDS/DAY)
CO
ROC
NOx.
PM10
4.19
Demolition Emissions
71.46
10.16
85.40
Grading Emissions
77.73
11.33
97.32
67.48
Construction Emissions
83.62
12.43
86.96
3.71
150
Daily Thresholds
550
75
100
Source: Urbemis 2002 for Windows 7.4.2
Project grading and construction emissions were calculated using the Urbemis 2002 Model
developed by the SCAQMD. Grading emissions were calculated for the following expected grading
equipment: one backhoe loader, one grader, three dump trucks, and one flatbed truck.
Construction emissions were calculated for the following construction equipment: one roller, one
crane, one drill rig, one concrete pump truck, and three concrete mixers. Employee vehicle traffic
was assumed to add a maximum of 60 vehicle trips/day based on an expected total of 15
construction employees.
These emission levels would not exceed the SCAQMD's daily threshold for any of the pollutants of
concern in the region, and would result in a less than significant impact. Vehicle emission odors
potentially resulting from temporary construction vehicle emissions may occur in the immediate
project vicinity and result in a nuisance to surrounding residents. However, these impacts would be
considered less than significant given their temporary nature. Implementation of the mitigation
measure identified below would minimize potential daily emissions from active grading operations
and the nuisance odor and air quality impacts associated with them.
MM-1 In order to minimize dust impacts, the contractor will be required to submit a Dust
Control Plan to the Public Works Department for review and approval prior to issuance
of a demolition or grading permit. This requirement shall be placed on the cover of the
grading plans. Said Dust Control Plan shall be consistent with the CVSIP and Public
Works Department's existing policies and standards and, at a minimum, will
incorporate the following measures:
21
All construction contractors shall comply with the Dust Control Plan and applicable
SCAQMD regulations. To ensure that the project is in full compliance and that there
are no nuisance impacts off -site, the contractor shall implement the following:
1. Cease all dust generating demolition, grading and/or construction operations
during winds in excess of 25 miles per hour,
2. Moisten soil not more than 15 minutes prior to moving it;
3. Water exposed surfaces at least twice a day under calm conditions and as often
as needed on windy days or during very dry weather -in order to maintain a surface
crust and prevent the release of visible emissions from the construction site;
4. Provide for street sweeping, as needed, on adjacent roadways to remove dirt
dropped by construction vehicles or mud which would otherwise be carried off by
trucks departing project sites; and
5. All trucks entering or leaving the site with material shall use tarps to minimize
fugitive dust -or materials release during transit.
MM-2 In order to minimize any impact to surrounding residences resulting from construction
vehicle emissions odors, and in addition to minimizing contribution to current non -
attainment for ozone, the contractor shall implement the following measures during
construction activities to reduce construction equipment emissions:
1. Maintain construction equipment engines by keeping them tuned;
2. Use low sulfur fuel for stationary construction equipment as required by SCAQMD
Rules 431.1 and 431.2;
3. Use existing power sources (i.e., power poles) when feasible. This measure
would minimize the use of higher polluting gas or diesel generators;
4. Configure construction parking to minimize traffic interference;
5. Minimize obstruction of through -traffic lanes;
6. When feasible, construction should be planned so that lane closures on existing
streets are kept to a minimum;
7. When feasible, schedule construction -operations affecting traffic for off-peak
hours; and
8. Develop a traffic plan to minimize traffic flow interference from construction
activities.
4. BIOLOGICAL RESOURCES -Would the project:
a) Have a substantial adverse impact, either directly or through habitat modifications, on any
species identified as a candidate, sensitive, or special status species by local designation or by
the CDFG or USFWS?
b) Have an adverse effect on any riparian habitat or other sensitive natural community identified by
local designation or by the CDFG or USFWS?
22
c) Adversely impact federally protected wetlands (including, but not limited to, marsh, vernal pool,
coastal, etc.) either individually or in combination with the known or probable impacts of other
activities through direct removal, Filling, hydrological interruption, or other means?
d) Interfere substantially with the movement of any resident or migratory fish or wildlife species or
with established resident or migratory wildlife corridors, or impede the use of wildlife nursery
sites?
e) Conflict with any local policies or ordinances protecting biological resources such as a tree
preservation policy, or ordinance?
1) Conflict with the provisions of an adopted Habitat Conservation Plan, Natural Conservation
Community Plan, or other approved local, regional, or state habitat conservation plan?
No Impact (Sections a-c & e-f). BonTerra Consulting conducted a survey of the project site on
September 12, 2003 to identify biological conditions and vegetation types on the project site and to
evaluate the potential for special status species. The findings of the biological constraints survey
are presented in Appendix A.
The proposed project is a roadway and bridge improvement project in the City of La Quinta. It lies
within a fully urbanized environment that is characterized by a mix of recreational and residential
uses. There is no vacant land on the project site with the potential to support any special status
native plant species or habitats or special status wildlife species. Common wildlife species
potentially occurring on the project site include primarily non-native species or common native .
species that have adapted to urban areas within the Coachella Valley.
Landscaping on the project site is typical of recreational and residential urban environments and
consists of plantings of non-native and native ornamental shrubs and trees. Ground cover on the
project site consists primarily of turf in the landscaped areas and puncture vine (Tribulus terrestris)
in disturbed areas. Ornamental shrubs observed on the project site include ocotillo (Fouquieria
splendens), fuchsia (Fuscia sp.), chuparosa (Justicia califomica), oleander (Nerium oleander), olive
(Olea sp.), arrow weed (Pluchea sericea), rosemary (Rosemarianus sp.), and Russian thistle
(Salsola tragus). Ornamental trees observed on the project site include palo verde (Cercidium sp.),
gum tree (Eucalyptus sp.), palm (Washingtonis sp.), poplar (Populus sp.), locust bean (Robinia sp.),
pepper (Schinus), and salt cedar (Tamarix sp.). Ornamental trees on the project site are less than
20 feet tall, with the exception of rows of palms on the east and west sides of Eisenhower Drive.
No raptor nesting habitat is available.
Common wildlife species observed during the survey consisted of bird species. No amphibian,
reptile, or mammal species were observed during the survey. However, coyote (Canis latrans) scat
was observed under the bridge indicating that this species likely uses the bridge as a movement
crossing. No bat species were observed and none are expected to roost under the bridge because
the underside of the bridge is smooth concrete that is free of cracks or crevices. Common bird
species observed during the survey included mallard (Anas platyrhyncos), American coot (Fulica
americana), American kestrel (Falco sparverius), mourning dove (Zenaida macroura), greater
roadrunner (Geococcyx californianus), western kingbird (Tyrannus verticalis), verdin (Auriparus
flaviceps), cactus wren (Campylorynchus brunneicapillus), northern mockingbird (Mimus
polyglottos), great -tailed grackle (Quiscalus mexicanus), and American goldfinch (Carduelis tristis).
No natural drainages intersect the project site. The La Quinta Evacuation Channel is concrete -lined
and contains no native vegetation: Therefore, no riparian habitats, waters of the U.S., or wetlands
occur on the project site. Although the bridge may be used for wildlife movement in the project
vicinity, no migratory wildlife corridors occur on or in the vicinity of the project site. Furthermore, the
La Quinta Evacuation Channel's capacity as a wildlife crossing would not be adversely
compromised because the channel would remain accessible upon project completion and during
23
non -construction hours (from 5:00 p.m. to 7:00 a.m.) when terrestrial wildlife is most likely to use the
crossing.
Development of the project would not affect any sensitive species as designated by the CDFG or
USFWS. The proposed project would not have any impact on riparian habitat or other sensitive
natural community or have an adverse effect on federally protected wetlands as defined by
Section 404 of the Clean Water Act. No additional significant impacts would occur and no
mitigation is required.
Potentially Significant Unless Mitigated (Section d). Mud nests constructed by cliff swallows
(Petrochelidon pyrrhonota) were observed on the underside of the Eisenhower Bridge. At least 200
nests were observed beneath the bridge representing a substantial nesting colony. This species
builds enclosed jug -shaped nests on the underside of cliffs, rock outcrops, and man-made
structures from March through May producing, then fledging offspring through August when it
migrates south to Mexico and Central America. The cliff swallow is a migratory bird species that is
protected by the Migratory Bird Treaty Act (META) of 1918 which prohibits the take or disturbance
of an active nest of any migratory bird species listed under the act. In California, unlike some other
states, a permit is not required to remove nests under construction that do not contain any new
eggs or young, or nests abandoned following the breeding season. Therefore, the following
mitigation measures shall be implemented to avoid potential impacts to the cliff swallow:
MM-3 If feasible, bridge construction should not occur between the months of February and
August. No limitations on construction shall occur at any other time of the year
(i.e., September through January).
MM-4 If construction during the cliff swallow breeding season (February through August) is
unavoidable, all existing nests shall be removed by a qualified biologist between
October 31 and January 31 prior to construction. All traces of mud shall be removed
from the underside of the bridge to prevent swallows from rebuilding old nests or the
remnants of deteriorated nests. Flexible material panels (e.g., fiberglass) shall, be
installed in all right angles between the eave and walls or columns forming a smooth,
concave surface in order to prevent access to right angles on the structure thereby
making nest attachment difficult to impossible. Installation shall be approved by the
qualified biologist who will conduct weekly site inspections, or as often as deemed
necessary by the biologist, to inspect the bridge for nesting activity and repeat nest
removal practices if necessary.
5. CULTURAL RESOURCES -Would the project:
a) Cause a substantial adverse change in the significance of a historical resource which is either
listed or eligible for listing on the National Register of Historic Places, the Califomia Register of
Historic Resources, or a local register of historic resources?
b) Cause a substantial adverse change in the significance of a unique archaeological resources
(i.e., an artifact, object, or site about which it can be clearly demonstrated that, without merely
adding to the current body of knowledge, there is a high probability that it contains information
needed to answer important scientific research questions, has a special and particular quality
such as being the oldest or best available example of its type, or is directly associated with a
scientifically recognized important prehistoric or historic event or person)?
c) Disturb or destroy a unique paleontological resource or site?
d) Disturb any human remains, including those interred outside of formal cemeteries?
Potentially Significant Unless Mitigated (Sections a-d). The following section is based on a
cultural resources records search conducted on October 10, 2003 by the Eastern Information
24
Center (EIC) at University of California, Riverside. The EIC is the state -designated repository for
records conceming archaeological and historical resources in Riverside County. The records
search provided information on known resources and related studies within a one -mile radius of the
project area. To augment the records search by the EIC, BonTerra Consulting reviewed published
accounts of cultural resources in Riverside County. The findings of the records search and
literature review are provided in Appendix B.
The results of the records search show that 18 archaeological sites and 5 isolated artifacts have
been recorded within a one -mile radius of the project, but none are recorded within or adjacent to
the Eisenhower Drive project site. Fourteen of the 18 sites are prehistoric resources represented
by bedrock milling features, artifact scatters, hearth features, and an extensive habitation area
containing human cremations. The remaining four sites are a cluster of historic -era deposits
consisting of scatters of consumer refuse (fragments of cans, bottles, and other household
materials). The results of the records search also note that nine built -environment historic
properties (buildings, structures, and other constructed features) are located within a one -mile
radius of the project site. None are recorded within the project site.
One of these properties is located near the northwestern terminus of the project site and
corresponds to the 1926 La Quinta Hotel complex located north of Avenue 50 and west of
Eisenhower Drive. In 1997, the historic hotel, 20 associated casitas (cottages), and landscaped
grounds were determined to be a significant local resource and eligible for the National Register of
Historic Places as a historic district. Under CEQA, properties listed on the National Register are
automatically listed on the California Register of Historic Resources. The importance of the La
Quinta Hotel is reflected in published accounts of historic resources in Riverside County. No
additional known historic properties are proximate to the project site.
The EIC reported that at least 22 cultural resources investigations have previously been conducted
within a one -mile radius of the project site. Two of these studies involved portions of the project
site, but no resources were identified in or adjacent to their respective coverage of Eisenhower
Drive. According to current EIC records, approximately 50 percent of the project alignment has not
been formally surveyed for cultural resources. The abundance of recorded cultural resources sites
in the vicinity of the project site indicates that the potential for archaeological materials to be present
is moderate to high.
The project site is located upon lacustrine and fluvial sediments deposited below the shoreline of
ancient Lake Cahuilla. Lake Cahuilla occurred intermittently from as recently as 400 years ago to
as long as 6,000 years ago. The fluvial sediments occurred when the lake receded and soils were
carried down to stream beds and overlain on the lacustrine materials. These alternating lacustrine
and fluvial sediments are referred to as Lake Cahuilla Beds and have a high potential for fossilized
freshwater diatoms, land plants, sponges, ostracods, mollusks, fish, and small terrestrial
vertebrates. The project site has been designated an area of high sensitivity in the La Quinta
General Plan Natural Resources Element. Drilling, grading, and trenching of the project site
associated with project construction could result in a significant impact to archaeological and
paleontological resources. The mitigation provided below would reduce impacts to a level
considered less than significant.
MM-5 A City of La Quinta-certified archaeologist shall be retained to attend pre -grade
meetings. The archaeologist will carefully inspect the area to assess the potential for
significant prehistoric or historic resources. If a site is uncovered, then a subsurface
evaluation may be needed to assess the resource before construction is allowed to
proceed. Further subsurface investigation may be needed if the site is determined
unique/important for its prehistoric information.
MM-6 During drilling and/or grading activities, a City of La Quinta-certified archaeologist shall
be present during ground disturbance and shall have the authority to temporarily divert
or redirect earthmoving to allow time to evaluate any exposed prehistoric or historic
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material, including paleontological resources. Any recovered prehistoric or historic
artifacts shall be catalogued by a qualified archaeologist or paleontologist. The City of
La Quinta would retain any resources discovered during grading for display in public
facilities or for educational purposes following cataloguing.
MM-7 In accordance with Public Resources Code 5097.94, if human remains are found, the
Riverside County coroner must be notified within 24 hours of the discovery. If the
coroner determines that the remains are not recent, the coroner will notify the Native
American Heritage Commission in Sacramento to determine the most likely
descendent for the area. The designated Native American representative then
determines in consultation with the property owner the disposition of the human
remains.
With implementation of the above mitigation measures impacts are expected to be reduced to a
less than significant level.
6. GEOLOGY AND SOILS -Would the aroiect:
a) Expose people or structures to potential 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?
ii) Strong seismic ground shaking?
hi) Seismic -related ground failure, including liquefaction?
iv) Landslides?
b) Result in substantial soil erosion or the loss of topsoil?
c) Be located on a geological unit or soil that is unstable, or that would become unstable as a
result of the project, and potentially result in on- or off -site landslides, lateral spreading,
subsidence, liquefaction or collapse?
d) Be located on expansive soil, as defined in Table 18-1-B of the Uniform Building Code (1994),
creating substantial risks to life or property?
e) Have soils incapable of adequately supporting the use of septic tanks or alternative waste water
disposal system where sewers are not available for the disposal of waste water?
Less Than Significant Impact (Sections a-c). The project site is underlain by Quaternary
Alluvium (Qal) which is primarily distributed at the mouths of drainages in the Santa Rosa
Mountains and in the eastern portion of the Coachella Valley. These deposits may have
accumulated rapidly, without being saturated, and may be subject to wind erosion or collapse upon
saturation (hydroconsolidation). Bedrock at the bridge location is at a depth of approximately 400 to
500 feet below the ground surface.
There are no known active or potentially active faults that traverse the project site or the City of La
Quinta in general, and the site is not located within an Alquist-Priolo Special Studies Zone. The
closest known active fault (San Andreas) is located approximately seven miles northeast of the site.
Other nearby active faults include the San Jacinto Fault Zone located approximately 10 miles
southwest of the project site. It extends for approximately 175 miles and is capable of producing
magnitude 6.5 to 7.5 earthquakes. This fault has historically produced more large earthquakes than
any other fault in California; however, it has not produced any particularly damaging quakes in
recent history. The next closest major fault zone is the Elsinore Fault, one of the largest but least
26
active faults in southern California. Given that no faults traverse the project site, the risk of ground
rupture is very low.
Liquefaction is a seismic phenomenon in which loose, saturated, fine-grained granular soils behave
similarly to a fluid when subjected to high -intensity ground shaking. The project site is within an
area identified as having a low to moderate potential for liquefaction on the State of California
Seismic Hazard Zone Map for the La Quinta Quadrangle (Department of Conservation, 1984).
The topography of the project site is flat and would not be substantially altered with implementation
of the proposed project. No new slope or bare areas would be created with implementation of the
proposed project. Therefore, the potential for landslides is considered very low.
Risks associated with land subsidence or soil expansion are considered low due to the minimal
amount of grading required for the project and the lack of subsidence because construction would
occur in the original alignment. In accordance with Public Works standard requirements, the
Contractor will prepare a soils study. Appropriate design standards and standard engineering
practices would be applied during construction of the project.
The proposed project consists of street and bridge improvements. No habitable structures are
proposed with project implementation and risks to people and private property are negligible.
Additionally, the proposed bridge will increase the diameter of the pilings from 16 inches to 24
inches to meet new seismic requirements instituted since the original bridge was constructed in
1981. Pilings for the bridge will be concrete CIDH piles constructed by pre -drilling a hole through
the concrete lining of the La Quinta Evacuation' Channel for the full depth of the pile. Steel
reinforcement is then placed in the hole prior to pouring the concrete. The size and depth of the
pile is engineered to support the forces caused by the superstructure of the bridge, including forces
caused by seismic activity. Pile caps at the top of the CIDH piles join the bridge superstructure to
the piles. No significant impacts are anticipated and no mitigation is required.
No Impact (Section d). The proposed project involves circulation infrastructure improvements and
would not involve the construction of habitable structures requiring septic tanks or alternative waste
water disposal systems. No impacts are anticipated and no mitigation is required.
7. HAZARDS AND HAZARDOUS MATERIALS -Would the project:
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 likely release of hazardous materials into the
environment?
c) Reasonably be anticipated to emit 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 and, as a result,
would it create a significant hazard to the public or the environment?
e) Is the project located on a site which is included on a list of hazardous materials sites complied
pursuant to Government Code Section 65962.5 and, as a result, would it create a significant
hazard to the public or the environment?
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 area?
27
g) impair implementation of or physically interfere with an adopted emergency response plan or
emergency evacuation plan?
h) Expose people or structures to the risk of loss, injury or death involving wildlands fines, including
where wildlands are adjacent to urbanized areas or where residences are intermixed with
wildlands?
No impact (Sections a-h). The proposed project involves roadway and bridge improvements to an
existing facility and would not involve any operations involving the routine transportation, use,
disposal, emission, or storage of hazardous substances or materials. The project site is not
included on a list of hazardous materials sites nor is it within the vicinity of a private airstrip.
The City of La Quinta has established a Multi -Hazard Functional Plan (MHFP) with planned
responses to natural and technological emergency situations. The MHFP includes emergency
response or evacuation plans that would be implemented during various emergency situations. The
proposed project would not be expected to impede the implementation of the MHFP as it would
allow through -traffic during construction. Therefore, no impacts are anticipated and no mitigation is
required.
During a site visit on September 13, 2003, it was determined that one existing school, the Adams
Elementary School, is located within Y4-mile of the proposed project. The Calle Tampico
Elementary school is proposed less than 300 feet to the south of the proposed project and is
expected to be constructed by April -2005. The proposed project would not represent a risk of
hazardous materials release to the schools and the students. No impacts are anticipated and no,
mitigation is required.
A Phase I hazardous materials/substances site records search was completed for the project site
and immediate vicinity (EDR 2003). No sites were identified in the area affected by, and
immediately adjacent to, the proposed project. The closest site is located approximately 1/8-mile to
the east of the intersection of Eisenhower Drive and Avenue 50 on La Quinta Country Club property
and was identified by the State Water Resources Control Board's Proposition 65 database. This
record does not involve the spill or release of toxic or hazardous materials/substances but is listed
because of La Quinta Country Club storage and use of chemical fertilizers and pesticides for the
maintenance of the golf course and landscaping. The next closest record is located approximately
%-mile to the southeast of the project site at the Circle K Store and gas station identified by the
Leaking Underground Storage Tank (LUST) database as a gasoline spill. The records consist of
permitted active operations and an underground storage tank location that has since been closed.
Neither of these sites would be impacted by project grading or construction. No impacts are
anticipated and no mitigation is required.
8. HYDROLOGY AND WATER QUALITY -Would the proiect:
a) Violate Regional Water Quality Control Board 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 (i.e., the production rate of pre-existing 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 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?
28
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
stormwater drainage systems to control?
Place housing within a 100-year floodplain, as mapped on a federal Flood Hazard Boundary or
Flood Insurance Rate Map or other flood hazard delineation map?
g) Place structures within a 100-year flood hazard area which would impede or redirect flood
flows?
Potentially Significant Unless Mitigated (Section a). Less Than Significant Impact (Section b-
e & g). No Impact (Section f). The Federal Clean Water Act establishes a framework for
regulating potential water quality impacts from construction activities through the U.S. Environmental
Protection Agency's National Pollutant Discharge Elimination System (NPDES) program.
Municipalities within the Coachella Valley that conduct public improvement projects involving more
than one acre of grading are required to submit a Notice of Intent (NOI) to the State Water
Resources Control Board (SWRCB) to obtain coverage under the Areawide Urban Storm Water
Runoff Permit (MS4) for the Coachella Valley (Order No. 01-077). The Regional Water Quality
Control Board (RWQCB) oversees the implementation and enforcement of the MS4 permit. The
proposed project would involve approximately 2.8 acres of grading. Therefore, the City is required
to submit a NOI to the SWRCB.
Construction activities such as grading, excavation, and trenching for site improvements would
result in disturbance of soils on the project site. Runoff from the project site during construction
could transport soils and sediments from these activities. Excavated material will be hauled away to
an off -site location by the Contractor. Stockpiling of construction materials in the ROW of the La
Quinta Evacuation Channel will not be permitted. Spills or leaks from heavy equipment and
machinery, staging areas, or building sites could also enter runoff. Typical pollutants could include
petroleum products and heavy metals from equipment and products such as paints, solvents, and
cleaning agents that could contain hazardous constituents. Potentially significant short-term water
quality impacts could result should polluted runoff enters downstream receiving waters. The
mitigation provided below would reduce impacts to a level considered less than significant.
MM-8 Potential erosion, siltation, and other water quality impacts during construction of the
proposed project would be managed through the preparation of a Stormwater Pollution
Prevention Plan (SWPPP). The SWPPP would be a joint effort of the City and Contractor
that would describe the measures or practices to control pollutants during both the
construction and post -construction phases of the project. The SWPPP shall provide a list of
target structural and non-structural best management practices (BMPs), which would be
used to control, prevent, remove, or reduce pollution. BMPs can include the use of gravel
bags, temporary desilting basins, and the timing of grading to avoid the rainy season
(November through April). The SWPPP shall contain BMPs that address the following areas
during construction, as defined by the California Storm Water Best Management Practice
Handbook: control of internal erosion, good housekeeping practices, waste containment,
minimization of disturbed areas, stabilization of disturbed areas, and site perimeter control.
The project site is outside of the 100-year flood zone based on mapping by the Federal Emergency
Management Agency (FEMA 1991); however, the City of La Quinta General Plan identifies the La
Quinta Evacuation Channel as being in the 100-year flood zone. Implementation of the proposed
project would result in the paving of approximately 0.75 acre of landscaping and disturbed areas
which currently contain permeable soils. The increase in impervious surface would be negligible
and would not substantially affect percolation in the project vicinity. Furthermore, flows would be
conveyed from storm drains to permeable drainages where they would be allowed to percolate into
29
the substrate. Drainage patterns would not be altered by project implementation and the addition of
approximately 0.75 acre of paved surface would not be expected to exceed the capacRy of the
existing storm drains on the site. Construction of the bridge would require installation of additional
support columns in La Quinta Evacuation Channel; however, they are not expected to appreciably
impede or redirect flows as they will be based on the channel slopes and not within the channel
bottom. Construction of piles in the La Quinta Evacuation Channel will not induce scour as the
channel is completely concrete -lined at the bridge widening location. Any damage to the channel
lining during drilling of the piles will be repaired to the requirements of the Coachella Valley Water
District. Debris flowing thru the bridge currently collects on the upstream existing piles located on
the existing bridge structure. Debris may catch on the newly constructed piles; however, the most
upstream piles on the existing badge will still trap most of the flowing debris. The new bridge
structure and piles will not increase the maintenance effort of removing debris at this location. No
significant impacts are anticipated and no mitigation is required.
The proposed project consists of roadway and bridge improvements and no new housing is
proposed. According to FEMA Firm Panel No.14F dated June 14, 2000, the majority of the project
area is in Zone X and is outside the 100-year flood zone; however, the proposed bridge
improvements would be located within the 100-year flood zone. Construction of the bridge would
require installation of additional support columns on the banks of the La Quinta Evacuation Channel;
however, they would not be expected to impede or redirect flows as they will be placed on the
channel slopes. Because no habitable structures would be placed within the 100-year• flood hazard
area and flood flows would not be impeded or redirected, the proposed roadway and bridge
improvements would not expose people or structures to a significant risk of loss, injury, or death
involving flooding. No significant impacts are anticipated and no mitigation is required.
9. LAND USE AND PLANNING -Would the oroiect:
a) Physically divide an established community?
b) Conflict with any applicable land use plans, policy, or regulation (including, but not limited to the
general plan, specific plan, and 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?
No Impact (Sections a-c). The proposed project is a roadway and bridge improvement project and
as a result, would not physically divide any existing communities. Project implementation would
require the development of approximately 1.25 acres of City -owned ROW including landscaped
areas and 8,930 square feet of privately owned land that would be acquired -by the City. An
encroachment permit from the Coachella Valley Water District would also be required to construct
the bridge pilings in their flood control easement. No private structures would be directly or
indirectly impacted.
No changes to General Plan or zoning designations would be required. Because the project would
not change the type or add a new land use to the project area, the project would not result in the
development of incompatible land uses. The project would not conflict with any applicable land use
plan, policy, or regulation, including habitat conservation plans or natural community conservation
plans. The proposed project is consistent with the Traffic and .Circulation Element of the La Quinta
General Plan. Therefore, no land use or planning impacts would result with implementation of the
proposed project. No mitigation is required.
10. MINERAL RESOURCES -Would the aroiect:
a) Result in the loss of availability of a known mineral resource classified MRZ-2 by the State
Geologist that would be of value to the region and the residents of the state?
30
b) Result in the loss of availability of a locally -important mineral resource recovery site delineated
on a local general plan, speck plan or other land use plan?
No Impact (Sections a, b). The Surface Mining -and Reclamation Act of 1975 (SMARA) mandated
the initiation of mineral land classification by the State Geologist in order to help identify and protect
mineral resources in areas within the State subject to urban expansion or other irreversible land
uses which would preclude mineral extraction. SMARA also allowed the State Mining and Geology
Board (SMGB) to designate lands containing mineral deposits of regional or statewide significance
in accordance with classification criteria from the State Geologist. The project site is located on land
that is designated MRZ-1 on California Division of Mines and Geology mineral resources maps,
indicating an area where adequate information indicates that no significant mineral deposits are
present, or where it is judged that little likelihood exists for their presence.
The project site is already urbanized, consisting of development precluding mineral extraction.
Furthermore, there are no known state designated mineral resources or locally -important mineral
resources recovery sites on or within the vicinity of the project area. Therefore, implementation of
the proposed project would not result in the loss of access to lands potentially containing mineral
resources. No impacts would occur and no mitigation is required.
11. NOISE -Would the aroiect•
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 temporary or periodic increase in ambient noise levels in the project vicinity above
levels existing without the project?
d) For a project located within an airport land use plan or, where such a plan has not been
adopted, within two miles of a public airport or public use airport, would the project expose
people residing or working in the project area to excessive noise levels?
e) For a project within the vicinity of a private airstrip, would the project expose people residing or
working in the project area to excessive levels?
Potentially Significant Unless Mitigated (Sections a, c). Potential noise impacts are commonly
divided into two groups: short-term construction and long-term. Short-term impacts are usually
associated with noise generated by construction activities. Long-term impacts are further divided
into impacts on surrounding land uses generated by a project and those impacts which occur at a
project site.
Construction activity would result in a temporary increase in ambient noise levels in the project
vicinity that would cease once construction is completed. Noise levels may exceed outdoor noise
standards for the land uses in the immediate vicinity of the project site during construction which is
expected to last approximately six months. Additionally, construction vehicle startup activities may
result in a temporary increase in ambient noise levels in the vicinity of the alternative construction
staging areas described in Section 8 of this Initial Study. The severity of impacts to nearby
residential units would be adverse associated with staging area Alternatives 1 and 2, located as
close as 30 feet to the nearest single-family homes. Residential units in the vicinity of staging area
Alternative 3 are separated from the La Quinta Corporation Yard by a six -foot -high concrete wall
atop a four -foot -high earthen berm that is vegetated with ornamental trees and shrubs. Therefore,
noise impacts from construction vehicle startup at staging area alternative 3 are considered
negligible.
31
Temporary construction noise is exempt from the standards of the La Quinta Noise Ordinance on
weekdays between the hours of 7:00 a.m. and 5:30 p.m. from October 1 to April 30 and 6:00 a.m. to
7:00 p.m. from May 1 to September 30. Government holidays and Sundays are not exempt from
the ordinance. Although construction noise impacts may be considered adverse, they would not be
considered significant. The annoyance of construction noise can be limited with the implementation
of standard noise control measures. Mitigation Measure 9 institutes a contract specification
requiring the contractor to place construction and support equipment in the least -disruptive area
away from nearby residential units as approved by the City Engineer, and construction of noise
barriers on staging area alternatives 1 and 2 along perimeters where residences are in closest
proximity to construction vehicle startup. In addition to limiting the hours of construction per the City
Noise Ordinance, these requirements will be placed on the covers of the grading and construction
plans.
The proposed project is a bridge and roadway improvement project and would improve traffic flow in
the project area. Increased traffic speeds may result in an incremental increase in noise levels.in
the immediate vicinity of the project site. However, the proposed project was anticipated in the
Traffic and Circulation Element of the General Plan and noise impacts to surrounding uses were
accounted for during the General Plan CEQA documentation process. Therefore, no significant
long-term changes to existing noise levels currently experienced in the area are anticipated.
The following mitigation measure would apply to the proposed project. This measure is proposed in
order to minimize nuisance noise impacts on residences and comply with existing City of La Quinta
Noise Ordinance:
MM-9 If construction vehicles are stored at either staging areas 1 or 2 adjacent to
Montezuma Community Park, construction and support vehicles and equipment will be
staged in the least disruptive area as far as possible from nearby occupied residential
units as approved by the City Engineer. Additionally, a temporary noise barrier,
consisting of an eight foot high, %-inch plywood partition will be constructed along the
northern perimeter of staging area 1 or southern perimeter of staging area 2, in order
to reduce nuisance noise impacts to residents in neighboring structures.
Less Than Significant Impact (Section b). Project implementation would not be expected to
generate long-term, excessive groundbome vibration or noise beyond the existing condition. The
potential exists for short-term temporary groundborne vibration impacts during construction,
particularly during drilling for the CIDH pilings, roadway pavement, and asphalt ripping. Due to the
short duration of construction activities and because construction activities would be conducted
within the parameters of the City of La Quinta Noise Ordinance, potential impacts associated with
ground -borne vibration are considered less than significant.
No Impact (Sections d-e). The proposed project is not located within the vicinity of a private
airstrip or public airport. No impacts associated with these land uses would occur and no mitigation
would be required.
12. POPULATION AND HOUSING -Would the aroiect:
a) Induce substantial population growth in an area, either directly (for example, by proposing new
homes and businesses) or indirectly (for example, through the 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
elsewhere?
3;
No Impact (Sections a-c). The proposed project is a street and bridge improvement project that
does not provide access to previously inaccessible areas and would therefore not have growth
inducing effects on population. As described in Checklist Responses 15a) and 15b), the proposed
project is in compliance with adopted traffic policies and forecasts. In addition, the proposed project
was anticipated in the Traffic and Circulation Element of the City of La Quinta General Plan and the
County of Riverside Plan of Arterial Highways (MPAH). The project would not result in direct or
indirect population growth impacts and no mitigation is required.
The proposed project is a roadway and bridge improvement project that would not remove or
displace homes. Land uses proximate to the project site include residential and recreational uses;
however, project implementation would not displace or adversely affect existing or planned land
uses proximate to the study area. No mitigation is required.
13. PUBLIC SERVICES -Would the proiect•
a� Would the project result in substantial adverse physical impacts associated with the provision of,
or need for, new or physically altered government facilities to maintain acceptable service ratios,
response times, or other performance objectives for any of the public services, which could
cause significant environmental impacts:
Fire protection?
Police protection?
Schools?
Parks?
Other public facilities?
Less Than Significant Impact. The proposed project is a street and bridge improvement project
and would not directly affect emergency police or fire services. With the proposed project, the
roadway would operate at an improved level of service and would reduce response times for
emergency vehicles. Short-term traffic delays may occur during construction. This short-term
impact would not be considered significant because the bridge and road would remain open during
construction. Additionally, a Traffic Control Plan would be prepared to address construction work
hours, maintenance of pedestrian facilities, and emergency vehicle access (See Section 15 of this
Initial Study regarding the Traffic Control Plan).
The project involves street and bridge improvements and would not create student generation for
local schools. Local school buses may use Eisenhower Drive as a travel route and may be delayed
by construction activities. As with other traffic in the area, the delays would not be substantial and
construction would be of a short duration. While the school district may choose to re-route their
school buses during the construction phase of this project as a result of time constraints, this impact
is temporary and would be considered less than significant. The following mitigation measure would
reduce the nuisance impact of construction of the proposed project on public services.
MM-10 No less than four weeks prior to commencement of roadway demolition and grading
activities, the City of La Quinta will provide notice to the City of La Quinta Fire
Department, City of La Quinta Police Department, and the school district indicating that
they may experience delays on the project roadway segment and providing a schedule
with the expected duration of each construction task.
14. RECREATION -Would the project:
a) Would the project increase the use of existing neighborhood and regional parks or other
recreational facilities causing physical deterioration of the facility?
33
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?
No Impact (Sections a, b). The proposed project would not generate an increase in population or
increase the demand for local or regional parks or other recreational facilities. Furthermore, the
proposed project does not include recreational facilities or require the construction or expansion of
any recreational facilities. No mitigation is required.
15. TRANSPORTATION AND TRAFFIC -Would the aroiect:
a) Cause an increase in traffic which is substantial -in relation to the existing traffic load and
capacity of the street system (i. e., result in a substantial increase in either the number of vehicle
trips, the volume to capacity ratio on roads, or congestion at intersections)?
b) Exceed, either individually or cumulatively, a level of service standard 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 change in
location that results in substantial safety risks?
d) Substantially increase hazards due to a design feature (e.g., sharp curves oi� dangerous
intersections) or incompatible uses (e.g., farm -equipment)?
e) Result in inadequate emergency access?
f) Result in inadequate parking capacity?
g) Conflict with adopted policies, plans, or programs supporting alternative transportation (e.g., bus
turnouts, bicycle racks) ?
Less Than Significant Impact (Sections a, b, e). The primary objective of the project is to
improve traffic circulation on Eisenhower Drive by converting an existing two-lane collector road to a
four -lane primary arterial, effectively doubling the traffic capacity of Eisenhower Drive between
Avenue 50 and Calle Tampico. Therefore, although the increased capacity resulting from project
implementation would likely result in increased long-term traffic on Eisenhower Drive, it would not be
expected to result in any exceedance of the capacity of the street system or levels of service
standards established by the City of La Quinta. The proposed project is .being implemented in
accordance with the Traffic and Circulation Element of the La Quinta General Plan and County
MPAH and impacts to the City of La Quinta circulation system were analyzed and approved during
their respective environmental review processes.
Lanes would remain open in both directions of travel during the construction phase. Construction
operations may result in traffic delays on Eisenhower Drive. Construction employee traffic would
add up to 60 peak hour trips per day. These delays and additional trips would not be expected to
appreciably add to the local traffic load. However, the following mitigation measure will further
reduce the short-term traffic impact resulting from project construction.
MM-11 The project contractor will be required to submit a Traffic Control Plan to the Public
Works Department for review and approval. This plan would address construction
hours, maintenance of pedestrian facilities, and emergency vehicle measures, as well
as include measures to minimize potential traffic delays. Said plan would be submitted
and approved by the City prior to issuance of either grading or construction permits,
whichever occurs first.
KM
All lanes would remain open during construction. Therefore, the proposed project is not expected to
result in constraints to local or regional emergency access. No impacts are anticipated and no
mitigation is required.
No Impact (Sections c-d & f-g). The proposed project is a street and bridge improvement project
and would not affect air traffic patterns or levels. The current roadway configuration has no parking
and none is proposed with the project.
The project has been designed to incorporate specific features (e.g., visibility, access, necessary
lanes, etc.) to ensure safety. The roadway design does not contain any sharp curves and
intersection/turn lane improvements would be adequately signed and/or signalized in accordance
with City roadway standards. Furthermore, no land uses adjacent to the proposed project site are
incompatible with, nor would they become incompatible with one another as a result of, the
proposed project.
The proposed project promotes the use of alternative transportation by providing bike paths and
sidewalks in both directions of travel. Additionally, no bus stops or turnouts would be impacted by
project implementation. The project would be in compliance with the Traffic and Circulation Element
of the La Quinta General Plan and County MPAH. No impacts are anticipated and no mitigation is
required.
16. UTILITIES AND SERVICE SYSTEMS -Would the aroiect•
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 projected demand in addition to the
provider's existing commitments? .
t) Be served by a landfill with sufficient permitted capacity to accommodate the project's solid
waste disposal needs?
No Impact (Sections a-f). The proposed project is a roadway and bridge improvement project and
would not result in the need for wastewater treatment, new stormwater drainage facilities, or
expansion of existing facilities, require long-term water supplies or result in the need for long-term
solid waste services. The construction contractor will be responsible for demolition and construction
debris waste disposal for the proposed project. A proportion of demolition and construction debris
will be recycled at a local facility. Asphalt and concrete debris from the existing bridge structure and
road may be recycled at the Granite Construction Company in the City of Palm Desert. Current
storm drains in Eisenhower Drive serve to drain runoff from the roadways to the La Quinta
Evacuation Channel and would continue to function in the same capacity. As part of project design,
the replaced curb and gutter would also have storm drains installed to City of La Quinta Department
of Public Works standards. Therefore, no impacts to utilities and service systems are anticipated
and no mitigation is required.
35
17. MANDATORY FINDINGS OF SIGNIFICANCE
a. Does the project have the potential to degrade the quality of the environment, substantially
reduce the habitat of a fish or wildlife species, cause 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?
Potentially Significant Unless Mitigated. The proposed project does not have the potential to
degrade the quality of the environment or substantially reduce the habitat of a fish or wildlife
population to drop below self sustaining levels or threaten to eliminate a plant or animal community
or reduce or restrict the range of a rare or endangered plant or animal. The proposed project is
located in an urbanized area that is already built out. No habitat suitable to support special status
plant or wildlife species exists on or adjacent to the project site. Construction of the proposed
project would not have a significant impact on fish or wildlife populations or plant or animal
communities.
Substantial historic, archaeological, and paleontological resources are located within one -half -mile
radius of the project site and may occur on the site. As such, the project may result in an impact on
important examples of the major periods of California history or prehistory. However, mitigation
measures 3 through 5 in Section 5 of this Initial Study would avoid or reduce these potential impacts
to a level considered less than significant.
b. Does the project have the potential to achieve short-term, to the disadvantage of long -teen,
environmental goals?
No Impact. The proposed project is being constructed to achieve the long term goal of reducing or
preventing traffic congestion in the project vicinity and the City circulation system. No long-term
impacts are anticipated with project implementation.
c. Does the project have impacts that are individually limited, but cumulatively considerable?
(`Cumulatively considerable "means that the incremental effects of a project are considerable
when viewed in connection with the effects of past projects, the effects of other current projects,
and the effects of probable future projects) ?
Less Than Significant Impact. The proposed project is a roadway improvement project that has
been anticipated in the General Plan and County of Riverside Master Plan of Arterials and as such,
its effects have been analyzed and approved on a region -wide basis. Construction of the La Quinta
Village Apartments is expected to be complete in early 2004. Additionally, construction of the Calle
Tampico Elementary School is expected to be completed in April 2005. Grading operations for the
Tampico Elementary School will be complete prior to initiation of grading operations for the
proposed project. Therefore, construction of the proposed project is not expected to occur
concurrently with other projects in the immediate vicinity. No significant cumulative impacts are
anticipated.
d. Does the project have environmental effects which will cause substantial adverse effects on
human beings, either directly or indirectly?
Less Than Significant. The proposed project may result in nuisance air quality, noise, and traffic
impacts during construction. However, these impacts, although adverse, are considered less than
significant due to their temporary nature and short duration.
36
SOURCES
BonTerra Consulting (9/18/2003). Biological Constraints Survey for a Street Improvement Project in
the City of La Quinta, Riverside County, Califomia.
BonTerra Consulting (10/17/2003). Preliminary Cultural Resources Assessment. Eisenhower Drive
Improvement Project, City of La Quinta, Riverside County, Califomia.
City of La Quinta (2002). Master Environmental Assessment.
City of La Quinta (2002). Comprehensive General Plan.
City of La Quinta Municipal Code.
Coachella Valley Association of Governments (CVAG) (2003). Draft Coachella Valley Multiple
Species Habitat Conservation Plan.
Department of Mines and Geology (2000). Seismic Hazards Maps -La Quinta USGS Quadrangle.
Environmental Data Resources (EDR) (2003). EDR Radius Map Records Search with Geocheck.
Site Visit conducted by Sam Stewart, Project Manager for Bonterra Consulting, on September 18,
2003.
South Coast Air Quality Management District (SCAQMD). California Environmental Quality Act
(CEQA) Handbook.
South Coast Air Quality Management District (2002). URBEMIS Air Emissions Model, Version
7.4.2.
The Nature Conservancy (1985). Coachella Valley Fringe -toed Lizard Habitat Conservation Plan.
Coachella Valley Fringe -toed Lizard Steering Committee; Chaired by the Nature Conservancy,
San Francisco, 155 p.
R:XProjectsWoffatt00071J SMND-040604. DOC
37
APPENDIX A
BIOLOGICAL CONSTRAINTS LETTER
, 7e. 0/?
C O N S U C T 1 N G
September 13, 2003
Mr. Oscar Orci
City of La Quinta
` 78-495 Calle Tampico
La Quinta, CA 92253
Subject: Biological Constraints Survey for a Street Improvement Project in the City of
La Quinta, Riverside County, California
%
Dear Mr. Orci:
This report summarizes the findings of a biological constraints survey on an
--
approximately 2.8-acre site (hereinafter referred to as the project site) in the City of La
Quinta, Riverside County, California. The purpose of the survey was to evaluate any
potential biological constraints that may be present on the project site. The project
site was surveyed by Sam Stewart, BonTerra Consulting Ecologist, on September 12,
2003. Prior to conducting the survey, the California Native Plant Society's (CNPS)
Inventory of Rare and Endangered Vascular Plants of California (CNPS 2003) and the
California Department of Fish and Game's (CDFG) Natural Diversity Database
!- - -�
(CNDDB) were reviewed.
Project Location and Description
The project site consists of Eisenhower Drive from Avenue 50 to approximately
700 feet north of Calle Tampico in the City of La Quinta, Riverside County. The
project site encompasses approximately 2.8 acres, primarily within existing right-of-
way (ROW) for the roadway easement. The site is shown on the U.S. Geological
Society's La Quinta 7.5 x 15-minute topographic quadrangle map as a portion of
Section 1, Township 6 South and Range 6 East. The project site topography is relatively flat with elevations ranging from 35 to 55 feet above
mean sea level (msl).
Survey Results
Vegetation
Vegetation on the project site consists of ornamental and ruderal vegetation types and
disturbed areas. Ornamental vegetation consists of landscaping that is typical of
recreational and residential urban environments in the Coachella Valley and consists
of plantings of non-native and native ornamental shrubs and trees. Ornamental
shrubs observed on the project site include ocotillo (Fouquieria splendens), fuschia
(Fuscia sp.), chuparosa (Justicia californica), oleander (Nerium oleande> olive (Olea
,
sp.), arrow weed (Pluchea sericea), and rosemary (Rosemarianus sp.). Ornamental
oe; ✓4
trees observed on the project site include palo verde (Cercidium sp.), gum tree
(Eucalyptus sp.), palm (Washingtonia sp.), poplar (Populus sp.), locust bean (Robinia
sp.), pepper (Schinus sp.), and salt cedar (Tamarix sp.) Ornamental trees on the
project site are less than 20 feet tall, with the exception of rows of palms on the east
•err
-N r0- "1
and west sides of Eisenhower Drive. Ground cover in the landscaped areas consists
of non-native turf grasses. Vegetation in ruderal areas consists of non-native species
Mr. Oscar Orci
September 13, 2003
Page 2
including Russian thistle (Salsola tragus) and puncture vine (Tribulus terresria). No natural
drainages intersect the project site. The La Quinta Channel is concrete -lined and contains no native
vegetation. Therefore, no riparian habitats, waters of the U.S., or wetlands occur on the project site.
Wildlife
The proposed project is a roadway and bridge improvement project that lies within a fully urbanized
environment characterized by a mix of recreational and residential uses. There is no vacant land on
the project site with the potential to support any special status native plant species or habitats or
special status wildlife species. Common wildlife species potentially occurring on the project site
include primarily non-native species or common native species that have adapted to urban areas
within the Coachella Valley.
Common wildlife species observed during the survey consisted of bird species. No amphibian,
reptile, or mammal species were observed during the survey. However, coyote (Canis latrans) scat
was observed under the bridge indicating that this species likely uses the bridge as a movement
crossing. Common bird species observed during the survey included mallard (Anas platythyncos),
American coot (Fulica americana), American kestrel (Falco sparvedus), mourning dove (Zenaida
macrours), greater roadrunner (Geococcyx califomianus), western kingbird (Tyrannus verticalis),
verdin (Auriparus flaviceps), cactus wren (Campylorynchus brunneicapillus), northern mockingbird
Wimus polyglottos), great -tailed grackle (Ouiscalus mexicanus), and American goldfinch (Carduelis
tristis).
Although the bridge may be used for wildlife movement in the project vicinity, no migratory wildlife
corridors occur on or in the vicinity of the project site. Furthermore, the La Quinta Channel's
capacity as a wildlife crossing would not be adversely compromised because the channel would
remain accessible during non -construction hours (from 5:00 p.m. to 7:00 a.m.) when terrestrial
wildlife is most likely to use the crossing.
Mud nests constructed by cliff swallows (Petrochelidon pyrrhonota) were observed on the underside
of the Eisenhower Bridge. At least 200 nests were observed beneath the bridge representing a
substantial nesting colony. This species builds enclosed jug shaped nests on the underside of cliffs,
rock outcrops, and man-made structures from March through May producing and fledging offspring
through August when it migrates south to Mexico and Central America. The cliff swallow is a
migratory bird species that is protected by the Migratory Bird Treaty Act (META) of 1918 which
prohibits the take or disturbance of an active nest of any migratory bird species listed under the act.
Special Status Species
Special status resources include plant and wildlife species, and vegetation types and the habitats
they provide. These species have generally been afforded this recognition by federal and state
resource agencies, as well as private conservation organizations. In general, the principal reason
an individual taxon (e.g., species, subspecies, or variety) is given such recognition is the
documented or perceived decline or limitations of its population size, or geographic range, and/or
distribution resulting in most cases from habitat loss. Special status habitats are considered to be
"depleted" habitats by the CDFG (CNDDB 2003).
No special status habitats occur on the project site; therefore, the following discussion of special
status biological resources is restricted to individual taxon. Special status species potentially
occurring on the project site were identified during the records search .as occurring in the project
region. The project region for this analysis is an approximately 250 square mile area in eastern
Mr. Oscar Orci
September 13, 2003
Page 3
Riverside County represented by the La Quinta, Myoma, West Berdoo Canyon and Indio USGS 7.5
x 15-minute quadrangle maps.
One federally- and/or state -listed Endangered plant species is known to occur in the project region,
the Coachella Valley milk -vetch (Astragalus lentiginosus var, coachellae). This species is not
expected to occur on the project site due to the predominantly developed nature of the project site
and the lack of suitable soils in disturbed or ruderal areas.
Several CNPS List 1 B and List 2 plant species are known to occur in the project region. These
species may meet the criteria in Section 15380 of the Califomia Environmental Quality Act (CEQA),
which states that if a species meets the definition of Threatened or Endangered, it may be treated
as such under CEQA. Therefore, if a population of these species is found, impacts to these species
may be considered significant according to CEQA. CNPS Lists 1 B and 2 species known to occur in
the project region include the Deep Canyon snapdragon (Antirrhinum cyathiferum), flat -seeded
spurge (Chamaesyce platysperma), glandular ditaxs (Ditaxis claryana), California ditaxis (Ditaxis
serrata var. califomica), creamy blazing star (Mentzelia tridentata), slender woolly -heads
(Nemacaulis denudate var. gracilis), purple stemodia (Stemodia durantifolia), and Mecca aster
(Xylorhiza cognata). These species are not expected to occur on the project site due to the lack of
suitable soil types.
Federally- and/or state -listed Threatened or Endangered wildlife species known to occur in the
project region include the desert pupfish (Cyprinodon macularius) and Coachella Valley f ringe-toed
lizard (Uma inomata). Neither of these species is expected to occur on the project site due to lack
of suitable habitat (i.e., permanent water or windblown sand, respectively).
Several federal Species of Concern and state Species of Special Concern are known to occur in the
project region. These species may meet the criteria in Section 15380 of the CEQA, which states
that if a species meets the definition of Threatened or Endangered, it may be treated as such under
CEQA. Therefore, if a population of these species is found, impacts to these species may be
considered significant according to CEQA. Federal Species of Concern and/or state Species of
Special Concern known to occur in the project region include the burrowing owl (Athene cunicularia),
northern red -diamond rattlesnake (Crotalus ruberrube�, prairie falcon (Falco mexicanus), Coachella
giant sand treader cricket (Macrobaenetes valgum), cheeseweed owlfly (Oliarces clara), Nelson's
bighorn sheep (Ovis canadensis nelsons), Palm springs pocket mouse (Perognathus longimembris
bangsi), flat -tailed horned lizard (Phrynosoma mcalli), black -tailed gnatcatcher (Poliopala melanura),
vermillion flycatcher (Pyrocephalus rubinus), Palm Springs round -tailed ground squirrel
(Spennophilus tereticaudus chlorus), crissal thrasher (Toxostoma crissale), and LeConte's thrasher
(Toxostoma lecontei). None of these species are expected to occur on the project site due to lack of
suitable habitat.
Conclusions/Recommendations
The project site currently supports a rather large nesting colony of cliff swallows. In California, unlike
some other states, a permit is not required to remove nests under construction that do not contain
any new eggs or young, or nests abandoned following the breeding season. Therefore, the
following mitigation measures are recommended to avoid potential impacts to the cliff swallow:
MM-1 If feasible, bridge construction should not occur between the months of February and
August. No limitations on construction shall occur at any other time of the year
(i.e., September through January).
Mr. Oscar Orci
September 13, 2003
Page 4
MM-2 If construction during the cliff swallow breeding season (February through August) is
unavoidable, all existing , nests shall be removed by a qualified biologist between
October 31 and January 31. All traces of mud shall be removed from the underside of the
bridge to prevent swallows from rebuilding old.nests or the remnants of deteriorated nests.
The qualified biologist shall conduct weekly site inspections, or as often as deemed
necessary by the biologist, to inspect the bridge for nesting activity and repeat nest
removal practices if necessary.
MM-3 If construction during the cliff swallow breeding season (February through August) is
unavoidable, all existing nests shall be removed by a qualified biologist between
October 31 and January 31. All traces of mud shall be removed from the underside of the
bridge to prevent swallows from rebuilding old nests or the remnants of deteriorated nests.
Flexible material panels (e.g., fiberglass) shall be installed in all right angles between the
eave and walls or columns forming a smooth, concave surface in order to prevent access
to right angles on the structure thereby making nest attachment difficult to impossible.
Installation shall be approved by the qualified biologist who will conduct weekly site
inspections, or as often as deemed necessary by the biologist, to inspect the bridge for
nesting activity and repeat nest removal practices if necessary.
The project site contains no special status habitat types or native or non-native vegetation types that
could support special status plants or wildlife species. Therefore, no additional biological constraints
to development currently exist on the project site and no additional recommendations or restrictions
pertaining to biological resources would apply.
Respectfully submitted,
B//ONTERRA�jCONSULTING
Ann M. Johnston
Principal of Biological Services
R:%P►0pClsW &f&,100700 ConSM Mts-121603.DOC
REFERENCES
Sam C. Stewart, IV
Project Manager/Ecologist
Abrams, L. 1923. Illustrated Flora of the Pacific States, Volumes I, II, and III. Stanford University
Press, Stanford, California.
Abrams, L. 1960. Illustrated Flora of the Pacific States, Volume IV. Stanford University
Press, Stanford, California.
[AOU] American Ornithologists' Union. 1998. Check -list of North American Birds. 7 h ed. American
Ornithologists' Union. Washington, DC.
California Department of Fish and Game. 2003. California Natural Diversity (RareFind) Database.
Califomia Department of Fish and Game, Natural Heritage Division, Sacramento, California.
California Native Plant Society (CNPS). 2003. Electronic Inventory of Rare and Endangered
Vascular Plants of California. California Native Plant Society, Sacramento, California.
Mr. Oscar Ord
September 13, 2003
Page 5
Collins, Joseph T. and Travis W. Taggart. 2002. Standard Common and Current Scientific Names
for North American Amphibians, Turtles, Reptiles and Crocodilians. Fifth Edition. Publication
of the Center for North American Herpetology, Lawrence. Iv + 44 pp.
Hickman, J.C. Editor., 1993. The Jepson Manual Nigher Plants of California. University of
California Press, Berkeley, California.
Sawyer, John O. and Todd Keeler -Wolf. 1995. A Manual of California Vegetation. California
Native Plant Society, Sacramento, California.
Sibley, John. 2000. Birds of North America. Audubon Press. Los Angeles, California.
Stebbins, Robert C. 2003. A Field Guide to Western Reptiles and Amphibians - 3rd Edition.
Houghton Mifflin Company. Boston
APPENDIX B
CULTURAL RESOURCES ASSESSMENT LETTER
1 �
T I N G
October 17, 2003
Mr. Oscar Orci
Community Development
City of La Quinta
78-495 Calle Tampico
La Quinta, CA 92253
Subject: Preliminary Cultural Resources Assessment: Eisenhower Drive
Improvement Project, City of La Quinta, Riverside County, California
Dear Mr. Orci:
BonTerra Consulting has completed a preliminary cultural resources assessment for
the Eisenhower Drive Improvement Project in the City of La Quinta, Riverside County,
California. In accordance with the California Environmental Quality Act (CEQA), the
assessment was performed in support of an Initial Study (IS) for the project.
Introduction
The project is located on the western edge of the Coachella Valley in the northern
area of the City roughly 5.5 miles south of Interstate 10 and 2.5 miles south of State
Route 111 (Exhibits 1 and 2). This location appears on the USGS La Quinta 7.5'
Quadrangle in the northeast quarter of Section 1, Township 6 South, Range 6 East
(Exhibit 3). The elevation of the project area is approximately 40 feet above mean
sea level (msl), and the topography is essentially flat.
The project involves widening and other improvements to Eisenhower Drive
beginning at Avenue 50 to approximately 700 feet north of Calle Tampico Avenue.
Widening will require acquisition of new right-of-way along -both sides of Eisenhower
Drive, affecting private properties such as the Haciendas at La Quinta, Santa Rosa
Cove, La Quinta Country Club, and La Quinta Resort and Club Mountain Course.
The La Quinta Channel bridge on Eisenhower Drive will also be affected.
Cultural Resources Records Search
A cultural resources records search was conducted on October 10, 2003 by the
5 _i 1�os Sri w Eastern Information Center (EIC) at University of California, Riverside (Appendix A).
The EIC is the state -designated repository for records concerning archaeological and
Su�i�t3 historical resources in Riverside County. The records search provided information
on known resources and related studies within a one -mile radius of the project area.
Cos;o� To augment the records search by the EIC, BonTerra Consulting also reviewed
published accounts of cultural resources in Riverside County, such as Landmarks of
C�(Tort52 Riverside and the Stories Behind Them (Patterson 1964), Guideposts to Histo
ry
Coachella Valley Edition (David Otis 1977), Riverside County Place Names (Gunther
.7 + , 444 91bg 1985), Harvest of the Sun, An Illustrated History of Riverside Count Brown 19
and Guide To The Historic Landmarks of Riverside County (Jennings et al. 19935},
`ti V .Y' . `il G!'.`� (••"C f.:i � ; ii �' i it is .:. C; f!"!
Mr. Oscar Orci
October 17, 2003
Page 2
This assessment has been prepared by RichaFd S. Shepard, M.A., Cultural Resources Manager
at BonTerra Consulting. Mr. Shepard is a Registered Professional Archaeologist (RPA) qualified
under Secretary of the Interior standards (Appendix B). BonTerra Consulting is recognized by the
County of Riverside as a qualified environmental contractor.
Records Search Results
The results of the records search showed that 18 archaeological sites and five isolated artifacts
have been recorded within one mile of the project, but none are recorded within or adjacent to the
Eisenhower Drive project area. Fourteen sites are prehistoric in nature and four sites represent.
historic -era trash deposits. The 18 archaeological sites are summarized below in Table 1.
TABLE 1
ARCHAEOLOGICAL SITES RECORDED WITHIN ONE MILE OF THE PROJECT
EIC Designation
Date(s) Recorded
Archaeological Description
CA-RIV-151
1960, 1972
Prehistoric ceramic fragments, lithic toots, bone
CA-RIV-296
1963
Prehistoric lithic/shell/ceramic artifacts, human cremation
CA-RIV-1179
1972, 1984
Prehistoric habitation area, fire -affected rock, fish bone,
ceramic fragments, several human cremations (cemetery)
CA-RIV-1180
1972, 1979, 1980,
1981, 1985
Prehistoric burned rock features, ceramic fragments, fish
bone, shell ornament, flakes, ground stone fragment
CA-RIV-1983
1980
Prehistoric flakes, ceramic fragments, ground stone tool
CA-RIV-2827
1984
Prehistoric ceramic fragments, fire -affected rock, metate
fragment, shell, bedrock milling feature
CA-RIV-3676
1995
Prehistoric bedrock milling feature (metate)
CA-RIV-3677
1989, 1999
Prehistoric bedrock milling feature (mortar)
CA-RIV-3678
1989, 1999 -
Prehistoric bedrock milling feature (metate), ceramic item
CA-RIV-5972
1997
Prehistoric ceramic fragments
CA-RIV-6074
1998
Prehistoric ceramic fragments, flakes, fire -affected rock,
metate fragment, fish bone
CA-RIV-6177
1999
Prehistoric bedrock milling feature (metate)
CA-RIV-6178
1999
Prehistoric bedrock milling feature (metate), ceramic frag
CA-RIV-6179H
1999
Historic trash scatter (primarily glass fragments and cans)
CA-RIV-6180H
1999
Historic trash scatter (primarily can fragments, ceramics)
CA-RIV-6181 H
1999
Historic trash scatter (primarily cans and glass fragments)
CA-RIV-6182H
1999
Historic trash scatter (primarily glass fragments and cans)
CA-RIV-7039 1
2003
Prehistoric hearth features with artifacts and faunal bone
The nearest recorded site is CA-RIV-5972, a wide scatter of prehistoric ceramic fragments located
roughly 1,000 feet south of the intersection Co' Calle Tampico and Eisenhower Drive.
Mr. Oscar Orci
October 17, 2003
Page 3
The results of the records search also showed that nine built -environment resources (buildi structures, and other -constructed features) are located within one mile of the project. None are
recorded within the project area. The nine properties are summarized below in Table 2.
CONSTRUCTED RESOURCES RECOTABLE 2
RDED WITHIN
ONE MILE OF THE PROJECT
EIC Designation
Date(s) Recorded
Built -Environment Description
33-7254
1981
Residence khown as "La Casita", ca. 1930
33-7255
1981
Office building, first real estate office in La Quinta. 1936
33-7256
1981
Office building, former grocery and post office, ca. 1945
33-7257
1981
Community center building and grounds, 1939
33-7258
Quinta Hotel complex and grounds, 1926
33-7259
419971La
Residence, early development in La Quinta,
33-7260
ca. 1928
Residence, early development in La Quinta,
33-8165
ca. 1930
One -mile segment of "Old Avenue 52"
roadway, ca. 1930
33-8308
1981Ranch
house, early development in La Quinta, ca. 1930
and Possibly an earlier adobe house and shed
One of these properties (33-7258) is located near the northwestern terminus of the project and
corresponds to the 1926 La Quinta Hotel complex located north of Avenue 50 and west of
Eisenhower Drive. In 1997, the historic hotel, 20 associated casitas (cottages), and landscaped
grounds were determined to be a significant local resource and eligible for the National Register
of Historic Places as a historic district. The importance of the La Quinta Hotel is reflected in
published accounts of historic resources in Riverside County.
The EIC reviewed the Office of Historic Preservation's Historic Property Data File (HPDF) for
Riverside County, which includes listings for the National Register of Historic Places, California
Register of Historic Resources, California Historical Landmarks, and California Points of Historical
Interest, but no additional historic properties are known in proximity to the project.
The 1904 USGS Indio 30' Quadrangle indicates no circa 1900 development in the area of the city.
In contrast, the 1941 Toro Peak 15' Quadrangle shows the developing city and early alignment
Eisenhower Drive, including a building along the east side of the project area. Presumably of
bridge was in place for the roadway to cross the drainage now represented by the La Quinta
Channel. The 1959 Palm Desert 15, Quadrangle shows much the same image, but no buildings
adjacent to the project area, indicating that no properties of historic age (i.e., those 45 years and
older, according to the Office of Historic Preservation) will likely be affected by right-of-way
acquisitions for the project. However, based on USGS map indications, the La Quinta Channel
bridge may date to as early as 1941 and may represent a structural resource of historic age.
The EIC reported that at least 22 cultural resources investigations have been conducted within one
mile of the project (see bibliography in Appendix A). Two of these studies (Berryman 1977 and
Love et al. 2000) involved portions of the current project area, but no resources were identified
or adjacent to their respective coverage of Eisenhower Drive. According to EIC records, more than
60 per cent of the project alignment has not been formally surveyed for cultural resources.
Mr. Oscar Orci
October 17, 2003
Page 4
Constraints Analysis
No cultural resources . are known within the project. alignment, and only one resource has been
recorded in relative proximity to the project. The historic La Quinta Hotel complex, located just
northwest of the intersection of Eisenhower Drive and Avenue 50, has been determined to be a
significant local resource and eligible for the National Register of Historic Places. As such, it is also
significant under CEQA, and any impacts to the property should be avoided. Although the
boundaries of the resource originally included the northwestern comer of the intersection, a smaller
area of modern development (Santa Rosa Cove Townhomes) is now present at the corner, and
the hotel complex appears to be situated behind (northwest of) the modem buildings. Furthermore,
no project -related improvements or acquisition of right-of-way will take place at the northwestern
comer, and the project will therefore not encroach upon or affect this significant resource.
Based on USGS map data, no buildings situated within the properties from which new right-of-way
will be acquired are believed to be historic, and the project is not expected to compromise the
integrity of any known historic properties. Although the La Quinta Channel bridge is relatively
recent in appearance, no date of construction is available at this time. The age of the bridge should
be established and documented to determine whether it represents a historic structural resource.
If so, it may require evaluation by an architectural historian prior to project -related impacts.
Mr. Shepard has not undertaken a field inspection of the project area, but has reviewed 29 digital
photographs taken on September 13, 2003. Much of the project area appears to be developed or
otherwise disturbed, but open soils are present in some areas. Given the area's sensitivity for
prehistoric archaeological materials (Table 1), the presence of additional materials is possible.
Recommendations
To proceed with the project, BonTerra Consulting recommends 1) a formal survey of previously
unsurveyed areas of the project by a qualified archaeologist familiar with the characteristic
prehistoric evidence of the region; and 2) establishing the date of construction of the La Quinta
Channel bridge to determine whether it represents a historic structural resource.
The results of these efforts will determine .if any further cultural resources constraints must be
addressed. A technical report presenting the results of the new field survey should be prepared
to meet CEQA, County of Riverside, and City of La Quinta standards.
Please contact Sam Stewart or myself at (714) 444-9199 if you have any questions
Sincerely,
BO T RRA CONSULTING
11490. n
Richard S. Shepard, M.A., RPA
Cultural Resources Manager
Attachments
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APPENDIX A
Cultural Resdurces Records Search
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CALIFORNIA
HISTORICAL
RESOURCES
INFORMATION
tYSTENI
Richard Shepard
Bonterra Consulting
151 Kalmus Drive, Suite E-200
Costa Mesa, CA 92626-7969
Easwn intomtiauon Cantor
Del whmnt Of m t wology
Unh+sr* of coomfa
RNerside, CA SZ21-041B
Phone M) 787-5745
Fax (DM) 787-54CO
October 10, 2003
RS # 2994
Fte: Cultural Resources Records Search for Moffatt J007 La Quinta
Dear Mr. Shepard,
We received your request on October 8, 2003, for a cultural resources records search
for the Moffatt 3007 La Quinta project located in Section 1, T.6S, R.6E, SBBM, In the
city of La Quinta in Riverside County. We have reviewed our site records, maps, and
manuscripts against the location map you provided.
Our records indicate that 22 cultural resources studies have been conducted within a
one -mile radius of your project area. Two of these studies involved a portion of the
Project area. Three additional studies provide overviews of cultural resources in the
general project vicinity. These reports are listed on the attachment entitled
"Archeological Reports" and are available upon request at 15�/page plus $30/ hour.
The KEYWORD section of each citation lists the geographic area, quad name, listing of
trinomials (when identified), report number in our manuscript files (RI #), and the
number of pages per report.
No cultural resources properties are recorded within the boundaries of the project area.
Our records indicate that 28 properties have been recorded within a one -mile radius of
the project area. Copies of the records are included for your reference.
The above information is reflected on the enclosed map. Areas that have been
surveyed are highlighted in yellow. Numbers marked in pencil or blue ink refer to the
report number in our manuscript files (RI #). Cultural resources properties are'marked
in red; numbers in black refer to Trinomial designations, those in green to Primary
Number designations.
Additional sources of information consulted are identified below.
National Register of Historic Places (03/12/02): no listed properties are
located within the boundaries of the project area.
Richard Shepard
October 10, 2003
Page 2
Office of Historic Preservation, Archaeological Determinations of Eligibility
(01/06/03): no listed sites are located within the boundaries of the project
area.
Office of Historic Preservation, Directory of Properties in the Historic
Property Data File (01/06/03): no listed properties are located within the
boundaries of the project area.
The 1959 USGS Palm Desert 15' and the 1904 USES Indio 30'
topographic maps do not indicate the presence of possible historical
structures or features within the boundaries of the project area. However,
the 1941 USGS Toro Peak 15' topographic map shows historical structures
or features present within the boundaries of the project area. Copies of
the relevant portions of these maps are included for your reference.
As the Information Center for Riverside County, it is necessary that we receive a copy
of all cultural resources reports and site information pertaining to this county in order
to maintain our map and manuscript files. Confidential information provided with this
records search regarding the location of cultural resources outside the boundaries of
your project area should not be included in reports addressing the project area.
Sincerely,
Emile Jackson
Information Officer
Enclosures
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Document No.: 1080271 y _ �j Unpublished Report
BERRYMAN, STANLEY R. I— V
1977 ARCHAEOLOGICAL INVESTIGATION OF THE EXCAVATION C LVNEL FOR THE COACHELLA
VALLEY. TOUPS CORPORATION, LA JOLLA CA. SUBMITTED TO PRIVATE (COACHELLA
VALLEY WATER DISTRICT). UNPUBLISHED REPORT ON FILE AT UCR, EASTERN INFORMATION
CENTER, RIVERSIDE, CA 92521
Last Update: 06/25/2003 Cataloged by: WOR-CA-04 on 10/04/1988
Keywords: RI-0213 (6), 33 PP (7), 120 ACRES SURVEYED (4), LA QUINTA 7.5' QUADRANGLE
(4), COACHELLA VALLEY (4), 33-0119 (CA-RIV-0119) (8), 33-0158 (CA-RIV-0158) (8),
33-0208 (CA-RIV-0208) (8), 33-1178 (CA-RIV-1178) (8), 33-1180 (CA-RIV-1180) (8),
33-1770 (CA-RIV-1770) (8)
-----------------------------------------------------------------------------------
Document No.: 1080392 ( Unpublished Report
BOWLES , LARRY L . �; 33 3
1978 ENVIRON4ENTAL ASSESSMENT - NEAR LA QUINTA, COACHELLA VALLEY. AUTHOR.
SUBMITTED TO PRIVATE. UNPUBLISHED REPORT ON FILE AT UCR, EASTERN INFORMATION
CENTER, RIVERSIDE, CA 92521.
Last Update: 06/05/2003 Cataloged by: WOR-CA-04 on 10/09/1988
Keywords: RI-0333 (6), 13 PP (7), 700 ACRES SURVEYED (4), LA QUINTA 7.5' QUADRANGLE
(4), COACHELLA VALLEY (4), 33-1176 (CA-RIV-1176) (8), 33-1177 (CA-RIV-1177) (8),
33-1838 (CA-RIV-1838) (8), 33-3027 (CA-RIV-3027) (8), 33-3322 (CA-RIV-3322) (8),
33-6866 (CA-RIV-5773) (8), 33-6869 (CA-RIV-5771) (8), 33-8422'(CA-RIV-6141) (8),
33-8425 (CA-RIV-6144) (8), 33-9517 (CA-RIV-6392) (8)
-----------------------------------------------------------------------------------
Document No.: 1080558 Unpublished Report
VAN HORN, DAVID AND M.J. AASVED
1979 SURFACE COLLECTION AND TEST EXCAVATION AT RIV-152 IN LA QUINTA, RIVERSIDE
COUNTY, CALIFORNIA. ARCHAEOLOGICAL ASSOCIATES, LTD. SUBMITTED TO PRIVATE•.
UNPUBLISHED REPORT ON FILE AT UCR, EASTERN INFORMATION CENTER, RIVERSIDE, CA
92521
Last Update: 10/11/2000 Cataloged by: WOR-CA-04 on 10/18/1988
Keywords: 100 ACRES SURVEYED (4), 123 PP (7), CA-RIV-0151 (8), COACHELLA VALLEY
(4), LA QUINTA 7.5' QUAD (4), MF #0451 (6)
-----------------------------------------------------------------------------------
Document No.: 1080703 Unpublished Report
LANDO, RICHARD — �, �'`: W
1979 CULTURAL RESOURCES RECONNAISSANCE (STAGE II) OF FLOOD CONTROL ALTERNATIVES
PROPOSED FOR THE WHITEWATER RIVER BASIN, RIVERSIDE COUNTY, CALIFORNIA.
ARCHAEOLOGICAL RESEARCH UNIT, U.C. RIVERSIDE. SUBMITTED TO U.S. ARMY CORPS OF
ENGINEERS. CONTRACT NO. DACW09-79-M-1034. UNPUBLISHED REPORT ON FILE AT UCR,
EASTERN INFORMATION CENTER, RIVERSIDE, CA 92521
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Document No.: 1080775 -� . Unpublished Report
JERTBERG, PATRICIA
1981 ARCHAEOLOGICAL SALVAGE INVESTIGATIONS OF CA-RIV-1180, LOCUS H AND OTHER
LOCI, ON TENTATIVE TRACT 14325. ARCHAEOLOGICAL RESOURCE MANAGEMENT
CORPORATION. SUBMITTED TO PRIVATE. UNPUBLISHED REPORT ON FILE AT UCR, EASTERN
INFORMATION CENTER, RIVERSIDE, CA 92521
Last Update: 10/11/2000 Cataloged by: WOR-CA-04 on 11/02/1988
Keywords: 82 PP (7), CA-RIV-1180 (8), COACHELLA VALLEY (4), LA QUINTA 7.5' QUAD
(4), MF #0647 (6), NO ACREAGE SURVEYED - DATA RECOVERY ONLY (4)
----------------------------------------------
Document No.: 1080776
�A-- Z — Unpublished Report
JERTBERG, PATRICIA V`
1982 ARCHAEOLOGICAL SALVAGE INVESTIGATION OF CA-RIV-1180, LOCUS 12, ON DUNA LA
QUINTA PARCEL. ARCHAEOLOGICAL RESOURCE MANAGEMENT CORPORATION. SUBMITTED TO
PRIVATE. UNPUBLISHED REPORT ON FILE AT UCR, EASTERN INFORMATION CENTER,
RIVERSIDE, CA 92521
Last Update: 10/11/2000 Cataloged by: WOR-CA-04 on 11/02/1988
Keywords: 68 PP (7), CA-RIV-1180 (8), COACHELLA VALLEY (4), LA QUINTA 7.5' QUAD
(4), MF #0647.(6), NO ACREAGE SURVEYED - DATA RECOVERY ONLY (4)
-----------------------------------------------------
Document No.: 1080777 Unpublished Report
SWENSON, JAMES D .� -- n 7�
1979 AN ARCHAEOLOGICAL ASSESSMENT OF 225 ACRES BETWEEN AVENUE 50 AND AVENIDA
NUESTRA, EAST OF LA QUINTA, RIVERSIDE COUNTY, CALIFORNIA.- ARCHAEOLOGICAL
RESEARCH UNIT, U.C. RIVERSIDE. SUBMITTED TO PRIVATE. UNPUBLISHED REPORT ON FILE
AT UCR, EASTERN INFORMATION CENTER, RIVERSIDE, CA 92521
Last Update: 10/11/2000 Cataloged by: WOR-CA-04 on 11/02/1988
Keywords: 125 ACRES SURVEYED (4), 9 PP (7), CA-RIV-1180 (8), COACHELLA VALLEY (4),
LA QUINTA 7.51 QUAD (4), MF ## 0 6 4 7 ( 6 )
---------------------------------------------------
Document No.: 1080960 Unpublished Report
SALPAS , JEAN A. — ( ;&) /
1980 AN ARCHAEOLOGICAL ASSESSMENT OF 82 ACRES OF LAND IN LA QUINTA,
CALIFORNIA. AUTHOR (S). SUBMITTED TO PRIVATE. UNPUBLISHED REPORT ON FILE AT
UCR, EASTERN INFORMATION CENTER, RIVERSIDE, CA 92521
Last Update: 10/31/2000 Cataloged by: WOR-CA-04 on 11/14/1988
Keywords: 19 PP (7), 82 ACRES SURVEYED (4), COACHELLA VALLEY (4), LA QUINTA 7.5'
QUAD (4) , MF ##0823 (6) , NO RESOURCES (8) .
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Document No.: 1082156 � f ' 0,1 Unpublished Report
WILKE, PHILIP J. o
1984 AN ARCHAEOLOGICAL ASSESSMENT OF THE BURNS RANCX AND ADJACENT PROPERTIES,
LA QUINTA, RIVERSIDE COUNTY, CALIFORNIA. ARCHAEOLOGICAL RESEARCH UNIT, U.C.
RIVERSIDE. SUBMITTED TO PRIVATE. UNPUBLISHED REPORT ON FILE AT UCR, EASTERN
INFORMATION CENTER, RIVERSIDE, CA 92501
Last Update: 04/25/1989 Cataloged by: WOR-CA-04 on 04/25/1989
Keywords: 61 PP (7), 580 ACRES SURVEYED (4), CA-RIV-1179 (8), CA-RIV-2822 (8),
CA-RIV-2823 (8), CA-RIV-2824 (8), CA-RIV-2825 (8), CA-RIV-2826 (8), CA-RIV-2827
(8), CA-RIV-2828 (8), COACHELLA VALLEY (4), LA QUINTA 7.5' QUAD (4), MF #1948 (6)
-----------------------------------------------------------------------------------
Document No.: 1083565 �` .�� Unpublished Report
DROVER, CHRISTOPHER E. l
1990 AN -ARCHAEOLOGICAL ASSESSMENT OF THE LA QUINTA HILLSIDE PROJECT, RIVERSIDE
COUNTY, CALIFORNIA. AUTHOR. SUBMITTED TO PRIVATE. UNPUBLISHED REPORT ON FILE
AT UCR, EASTERN INFORMATION CENTER, RIVERSIDE, CA 92501
Last Update: 10/15/1990 Cataloged by: WOR-CA-04 on 10/15/1990
Keywords: MF #3243 (6), 12 PP (7), 6.2 ACRES SURVEY (4), COACHELLA VALLEY (4), LA
QUINTA 7.5' QUAD (4), NO RESOURCES (8)
-----------------------------------------------------------------------------------
Document No.: 1084731 Unpublished Report
CHACE, PAUL AND CHARLES REEVES rZ ��
1994 REPORT OF AN ARCHAEOLOGICAL MONITORING PROGRAM FOR THE SEASONS RESIDENTIAL
PROJECT, TRACT 28019, CITY OF LA QUINTA. THE KEITH COMPANIES. SUBMITTED TO
PRIVATE. UNPUBLISHED REPORT ON FILE AT UCR, EASTERN INFORMATION CENTER,
RIVERSIDE, CA 92501
Last Update: 08/16/1995 Cataloged by: WRO-CA-04 on 08/16/1995
Keywords: MF #4199 (6), 11 PP (7), NO ACREAGE SURVEYED - MONITORING ONLY (4),-LA
QUINTA 7.5' QUAD (4), COACHELLA VALLEY (4), NO CULTURAL RESOURCES (8)
-----------------------------------------------------------------------------------
Document No.: 1084792 Unpublished Report
CHACE, PAUL AND CHARLES E. REEVES .---L 3 C `' I
1995 A CULTURAL RESOURCES SURVEY FOR LA QUINTA ELEMENTARY SCHOOL NO. 2, DESERT
SANDS UNIFIED SCHOOL DISTRICT. KEITH COMPANIES. SUBMITTED TO DESERT SANDS
UNIFIED SCHOOL DISTRICT. UNPUBLISHED REPORT ON FILE AT EASTERN INFORMATION
CENTER, U.C. RIVERSIDE, CA 92521
Last Update: 10/18/1995 Cataloged by: WRO-CA-04 on 10/18/1995
Keywords: MF #4245 (6), 21 PP (7), 9.33 ACRES SURVEYED (4), LA QUINTA 7.5' QUAD
(4), COACHELLA VALLEY (4), NO RESOURCES (8)
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Document No.: 1085050 El — L+ 3L Unpublished Report
CHASE, PAUL G. AND CHARLES E. REEVES
1996 REPORT OF AN ARCHAEOLOGICAL MONITORING PROGRAM FOR THE TERRACINA
APARTMENTS TRACT, CITY OF LA QUINTA. THE KEITH COMPANIES. SUBMITTED TO
PRIVATE. UNPUBLISHED REPORT ON FILE AT EASTERN INFORMATION CENTER, U.C.
RIVERSIDE, CA 92521
Last Update: 09/26/1997 Cataloged by: WRO-CA-04 on 09/26/1997
Keywords: MF #4417 (6), 8 PP (7), NO ACRES SURVEYED (4), MONITORING STUDY (1), LA
QUINTA 7.5- QUAD (4), COACHELLA VALLEY (4), NO RESOURCES (8), CUP 96-023 (6), PP
96-571 (6) , EA 96-311 (6)
------------------------------------=-------------
Document No.: 1085121
�,�� ! [0; , f� Unpublished Report
BROCK, JAMES
1997 HERITAGE RESOURCES ASSESSMENT FOR TENTATIVE TRACT 28409 CITY OF LA QUINTA,
CALIFORNIA. ARCHAEOLOGICAL ADVISORY GROUP. SUBMITTED TO CITY OF LA QUINTA.
UNPUBLISHED REPORT ON FILE AT EASTERN INFORMATION CENTER, U.C. RIVERSIDE, CA
92521
Last Update: 04/21/1998 Cataloged by: WRO-CA-04 on 04/21/1998
Keywords: MF #4455 (6), 11 PP (7), 8 ACRES SURVEYED (4); LA QUINTA 7.51 QUAD (4),
COACHELLA VALLEY (4), NO RESOURCES (8), TT 28409 (6)
----------------------------------------------------
Document No.: 1085160 � Unpublished Report
BROCK, JAMES FC._ t'
1997 A CULTURAL RESOURCES ASSESSMENT OF 30 LOTS IN THE LA QUINTA COVE AREA,
CITY OF - LA QUINTA, CALIFORNIA (SELF HELP GROUPS 3, 4, & 5). ARCHAEOLOGICAL
ADVISORY GROUP. SUBMITTED TO PRIVATE. UNPUBLISHED REPORT ON FILE AT EASTERN
INFORMATION CENTER, U.C. RIVERSIDE, CA 92521
Last Update: 04/24/1998 Cataloged by: WRO-CA-04 on 04/24/1998
Keywords: MF #4479 (6), 19 PP (7), 03.44 ACRES SURVEYED (4), LA QUINTA 7.5, QUAD
(4), COACHELLA VALLEY (4), P-33-8061 (8)1 P-33-8062 (8)
-------------------------------------------------------
Document No.: 1085161 Unpublished Report
BROCK, JAMES 4i-i L 3
1997 A CULTURAL RESOURCES ASSESSMENT OF 27 LOTS IN THE LA QUINTA COVE AREA,
CITY OF LA QUINTA, CALIFORINA (SELF HELP GROUPS 6, 7, S, 8). ARCHAEOLOGICAL
ADVISORY GROUP. SUBMITTED TO PRIVATE. UNPUBLISHED REPORT ON FILE AT EASTERN
INFORMATION CENTER, U.C. RIVERSIDE, CA 92521
Last Update: 04/24/1998 Cataloged by: WRO-CA-04 on 04/24/1998
Keywords: MF #4479 (6), 19 PP (7), 03.1 ACRES SURVEYED (4), LA QUINTA 7.5, QUAD
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Document No.: 1085201 `�'_._ 0,
434 Unpublished Report
CHACE, PAUL G.
1996 HISTORIC RESOURCE EVALUATION REPORT, THE OLD AVENUE 52, CITY OF LA
QUINTA. THE KEITH COMPANIES. SUBMITTED TO PRIVATE. UNPUBLISHED REPORT ON FILE
AT EASTERN INFORMATION CENTER, U.C. RIVERSIDE, CA 92521
Last Update: 04/27/1998 Cataloged by: WRO-CA-04 on 04/27/1998
Keywords: MF #4504 (6), 36 PP (7), 01 MILE SURVEYED (4), LA QUINTA 7.5' QUAD (4),
COACHELLA VALLEY (4), P-33-8165 (8), TR 28470 (6)
-----------------------------------------------------------------------------------
Document No.: 1085219 Unpublished Report
LOVE, BRUCE, AND BAI "TOM" TANG �` L+CA-C
1998 CULTURAL RESOURCES REPORT WATER AND SEWER PIPELINE RIGHTS -OF -WAY AND
ASSOCIATED FACILITIES IN COMMUNITY FACILITIES DISTRICT NO. 97-I, NEAR WILDOMAR
ELSINORE VALLEY MUNICIPAL WATER DISTRICT RIVERSIDE COUNTY, CALIFORNIA. CMR
TECH. SUBMITTED TO PRIVATE. UNPUBLISHED REPORT ON FILE AT EASTERN INFORMATION
CENTER, U.C. RIVERSIDE, CA 9252
Last Update: 04/28/1998 Cataloged by: WRO-CA-04 on 04/28/1998
Keywords: MF #4519 (6), 22 PP (7), 06 MILES SURVEYED (4)', MURRIETA 7.5' QUAD (4),
WILDOMAR 7.5' QUAD (4), CISMONTANE SOUTHERN CALIFORNIA (4), NO RESOURCES (8), CRM
TECH CONTRACT #306 (6)
-----------------------------------------------------------------------------------
Document No.: 1085392 �.7( --�� Unpublished Report
BROWN, JOAN C . Cell 4 � � k;'
1999 A CULTURAL RESOURCES RECONNAISSANCE FOR THE LA QUINTA RESORT & CLUB REAL
PROJECT, LOCATED IN LA QUINTA, RIVERSIDE COUNTY, CALIFORNIA.. RMW PALEO
ASSOCIATES. SUBMITTED TO PRIVATE. UNPUBLISHED REPORT ON FILE AT EASTERN
INFORMATION CENTER, U.C. RIVERSIDE, CA 92521
Last Update: 11/04/1999 Cataloged by: WRO-CA-04 on 11/04/1999
Keywords: MF #4662 (6), 21 PP (6), 106 ACRES SURVEYED (4), LA QUINTA 7.5' QUAD (4),
COACHELLA VALLEY (4), CA-RIV-3676, CA-RIV-3677, CA-RIV-6177, CA-RIV-6178,
CA-RIV-6179H, CA-RIV-6180H, CA-RIV-6181H, CA-RIV-6182H, Pt33-8670, P#33-8671,
P#33-8672 (8), RMW PROJECT NO. 98-1254 (6)
-----------------------------------------------------------------------------------
Document No.: 1085395 Unpublished Report
BROCK, JAMES, AND BRENDA SMITH E l - L 411
1999 PHASE I AND II CULTURAL ASSESSMENT FOR A PROPOSED LAKE EXPANSION AT LA
QUINTA COUNTRY CLUB, CITY OF LA QUINTA, CALIFORNIA. AAG. SUBMITTED TO
PRIVATE. UNPUBLISHED REPORT ON FILE AT EASTERN INFORMATION CENTER, U.C.
RIVERSIDE, CA 92521
s=aassasaa=.asssssasaaasaria:xasaasazsssassasas=saazzzzscz=====s==sx====__
ARCHEOLOGICAL REPORTS NADB/Query `
Printed: 10/09/2003
Page: 006
rzx
Document No.: 1085396 (` t � � Unpublished Report
BROOK, JAMES , AND BRENDA D . SMITH r`--� ` 1
1998 REPORT ON ARCHAEOLOGICAL MONITORING FOR THE LA QUINTA RESORT HOMES
PROJECT, CITY OF LA QUINTA, CALIFORNIA. ARCHAEOLOGICAL ADVISORY GROUP.
SUBMITTED TO CITY OF LA QUINTA. UNPUBLISHED REPORT ON FILE AT EASTERN
INFORMATION CENTER, U.C. RIVERSIDE, CA 92521
Last Update: 11/04/1999 Cataloged by: WRO-CA-04 on 11/04/1999
Keywords: MONITORING (7), MF #4665 (6), 12 PP (7), NO ACREAGE SURVEYED (4), LA
QUINTA 7.5' QUAD (4), COACHELLA VALLEY (4), NO RESOURCES (8)
-----------------------------------------------------------------------------------
Document No.. 1085469 �zl — ` M W Unpublished
LOVE, BRUCE, TOM TANG, HARRY QUINN, KATHRYN BOUSCAREN, AND DARCY WIEWALL Report
1999 ARCHAEOLOGICAL TESTING AND SITE EVALUATION REPORT: TENTATIVE TRACT NO.
29436, CITY OF LA QUINTA, RIVERSIDE COUNTY, CALIFORNIA. CRM TECH. SUBMITTED
TO PRIVATE. CONTRACT NO. 421. UNPUBLISHED REPORT ON FILE AT EASTERN INFORMATION
CENTER, U.C. RIVERSIDE, CA 92521
Last Update: 08/22/2000 Cataloged by: WRO-CA-04 on 08/22/2000
Keywords: MF #4663 (6), 77 PP (7), 87 ACRES SURVEYED (4), LA QUINTA 7.5' QUAD (4),
COACHELLA VALLEY (4), CA-RIV-3678 (8), CA-RIV-4168 (8), CA-RIV-5512 (8),
CA-RIV-6241 (8), CA-RIV-6242 (8), CA-RIV-6243 (8), CA-RIV-6244 (8), CA-RIV-6245
(8) , P-33-8761 (8) , CRM TECH JOB #421 (6)
--------------------------------------
Document No.. 1085566 -----------
Unpublished Report
BROOK, DAMES v l —� p
2000 PHASE I CULTURAL RESOURCES ASSESSMENT OF APN 777-075-020, LA QUINTA,
CALIFORNIA. ARCHAEOLOGICAL ADVISORY GROUP. SUBMITTED TO PRIVATE. CONTRACT NO.
000611. UNPUBLISHED REPORT ON FILE AT EASTERN INFORMATION CENTER, U.C.
RIVERSIDE, CA '92521
Last Update: 09/26/2000
Keywords: MF #4785 (6), 17 PP (7), 1 ACRE
RESOURCES (8), JOB #000611
Cataloged by: WRO-CA-04 on 09/26/2000
SURVEYED (4), COACHELLA VALLEY (4), NO
Document No.. 1085742-------'�--------------------------------------"
LOVE, BRUCE AND HARRY M. QUINN 1�.---��� Unpublished Report
2000 LIMITED ARCHAEOLOGICAL TESTING ON TENTATIVE PARCEL MAP NO. 29909, CITY OF
LA QUINTA, RIVERSIDE COUNTY, CALIFORNIA. CRM TECH. SUBMITTED TO PRIVATE.
CONTRACT NO. N/A. UNPUBLISHED REPORT ON FILE AT EASTERN INFORMATION CENTER,
U.C. RIVERSIDE, CA 92521
Last Update: 10/24/2001 Cataloged by: WRO-CA-04 on 04/17/2001
sssxasaazssssss:ssssassazaaaass:asassssssss:ssssss:ssssssssssssss:sssssssssssssssss
r� ARCHEOLOGICAL REPORTS NADB/Query i
Printed: 10/09/2003 Page: 007
=ssssssss:sassax=ssssssssassasssssssssts�sssssssssssssss:ssssssssssssssssssssssssssss
Document No.: 1085745 LA4� 0 Unpublished Re
1� P Port
LOVE, BRUCE, BAI "TOM" TANG, HARRY QUINN, MARIAM-DUHDUL, AND ADRIAN SANCHEZ MORWO
2000 HISTORICAL/ARCHAEOLOGICAL RESOURCES SURVEY AND TESTING REPORT, VISTA
MONTANA DEVELOMENT, EISENHOWER DRIVE AND CALLE TAMPICO, CITY OF LA QUINTA,
RIVERSIDE COUNTY, CALIFORNIA. CRM TECH. SUBMITTED TO PRIVATE. CONTRACT NO.
N/A. UNPUBLISHED REPORT ON FILE AT EASTERN INFORMATION CENTER, U.C. RIVERSIDE,
CA 9252
Last Update: 05/04/2001 Cataloged by: WRO-CA-04 on 04/20/2001
Keywords: MF #4919 (6), 24 PP .(7), 33.1 ACRES SURVEYED (4), LA QUINTA 7.5- QUAD
(4), COACHELLA VALLEY (4), NO RESOURCES (8), CRM TECH JOB #619 (6)
==cxaa=x=x�a==a.:xx=axxx�n=axe=xxc�scaasaxxoxszassszs:ssss=:�ass:ss:s:sssszaszaazss
EISENHOWER DRIVE BRIDGE
AND DRAINAGE IMPROVEMENTS
FINAL MITIGATED NEGATIVE DECLARATION
RESPONSES TO COMMENTS
SCH No. 2004071144
Prepared for:
City of La Quinta,
78-495 Calle Tampico
La Quinta, CA 92253
Contact: Oscar Orci
Planning Director
Prepared by:
BonTerra Consulting
151 Kalmus Drive, Suite E-200
Costa Mesa, California 92626
(714) 444-9199
Contact: Kathleen Brady
Principal of Technical Services
September 17, 2004
Eisenhower Drive &idge and Drainage Improvements
EISENHOWER DRIVE
BRIDGE AND DRAINAGE IMPROVEMENTS PROJECT
RESPONSES TO COMMENTS
The City of La Quinta prepared an Initial Study for bridge and drainage improvements along
Eisenhower Drive pursuant to the California Environmental Quality Act (CEQA), as amended
(Public Resources Code §21000 et seq.), and in accordance with the State CEQA Guidelines
(California Code of Regulations, Title 14, §15000 et. seq.). The project would involve
improvements Eisenhower Drive and to the existing -drainage system that extends beneath
Eisenhower Drive. Pursuant to Public Resources Code §21080(c)(2) a Mitigated Negative
Declaration (MND) was prepared. The document was circulated for a 20-day public review
period from July 28, 2004 to August 26, 2004. Two comment letters on the project were
received from:
-• Native American Heritage Commission (dated August 26, 2004)
• South Coast Air Quality Management District (dated August 19, 2004)
Public Resources Code §21091(f) and the CEQA Guidelines §15074 require that the lead
agency must consider the Negative Declaration, together with any comments received, before
approving the project. The lead agency has no affirmative duty to prepare formal responses to
comments on the Negative Declaration, but should provide adequate information on record
explaining why the comments do not affect the conclusion that there are no potential significant
environmental effects.
The City'of La Quinta has elected to prepare written responses to the comments. The comment
letters and responses follow.
P:wr�e MTC_oM204.aoc 1 Responses to Comments
Eisenhower Drive Bridge and Drainage Improvements
Comment Letter from
Steve Smith, Ph.D.
South Coast Air Quality Management District
PAProiectSWOOMTC 090204.dm 2
Responses to Comments
�. • • South Coast
Air Quality t Management District
P
11865 Copley Drive, Diamond Bair, CA 91765-41 TIC
(909) 396-2000 - www.agmd.gov
FAXED! AUGUST 19, 2004 August 19, 2004
Mr, Otcar Hai
City of La Quinta
P.O. Box 1504
Ls Quints, CA 922S3
Mitigated Negative Dec.Lsration (1 W) for the Propased Blsenbower Drive HNdge and
ri page ImprmIgNtl — City of IA Old to
The South Coast Air Quality Management District (SCAQMD) appreciates the opportunity to
comment on the above-,ncationed document. The following conun=t is meant es guidance for
the Lead Agency and should be incorpomud into the kcal Iviltiaaud Nd getive Declaration
(MND). In its review of the Draft MND, it was noted that the information perWning to the .
URBEMIS 2002 computer model used to estimm project air queiity impacts was not included in
the Draft Ml\TD,
In the Final MNb and for'future projects, the lead agency should include the URBEhUS 2002
model inputs, assumptions and output sheets used to estimate applicable con&uction and
operational impacts for the proposed.project. Since the URBEMIIS 2002 outputs were not
included, the SCAQMD could not confirm the results,
Please provide the SCAQMD with written response to the comment contained herein prior to the
adoption of the Final Mitigated Negative Declaration, The SCAQMD would be happy to work
with the Lud Agency to address these «sue® and my other questions that may arise. Please
corttact Gordon Mize, Air Quality Specialist — CEQA Section, at (909) 396-3202, if you have any
questions regarding chose oommenta.
Sincerely,
r3t�� tie-ry �p
Steve swith, PlI D•
Program Supervisor, CEQA Section
Planning, Rule Development & Ares Sources
Attuhment
SS.CM
RVC040723-07
Control Number
AQMD-1
Eisenhower Drive Bridge and Drainage Improvements
Responses to Comments from
Steve Smith, Ph.D.
South Coast Air Quality Management District
P:�ProjectsWofFarilRrc 090204.doc 3 Responses to Comments
Eisenhower Drive Bridge and Drainage Improvements
Response to Comment AQMD-1
Your comment is noted. The URBEMIS 2002 model inputs, assumptions and output sheets
used to estimate applicable construction impacts for the proposed project are hereby included in
the following as Appendix C of Final MND SCH# 2004071144.
p:Vxmi@ vAof IMTC_090204.d= 4 Responses to Comments
APPENDIX C
URBEMIS 2002
EISENHOWER DRIVE BRIDGE AND DRAINAGE IMPROVEMENTS
PROJECT CONSTRUCTION EMISSIONS WORKSHEETS
Page: 1
URBEMIS 2002 For
4
Windows 7.5.0
File Name:
C:\Program File3\Project32k2\Ei3enhower
Drive.urb
Project Name:
Eisenhower Drive
Project Location:
South Coast Air Basin
(Los Angeles area)
On -Road Motor Vehicle Emissions
Based on EMFAC2002 version 2.2
SUMMARY REPORT
(Pounds/Day
- Summer)
CONSTRUCTION EMISSION ESTIMATES
PM10
PM10
PM10
2003 "'
ROG NOx
CO
S02
TOTAL
EXHAUST
DUST
TOTALS (lbs/day,unmitigated)
11.33 97.32
77.73
0.00
4.79
4.76
0.01
TOTALS (lbs/day, mitigated)
1.25 50.38
10.51
0.00
0.06
0.05
0.01
PM10
PM10
PM10
*** 2004 ***
ROG NOx
CO
S02
TOTAL
EXHAUST
DUST
TOTALS (lbs/day,unmitigated)
12.43 86.96
83.62
0.07
3.71
3.70
0.01
TOTALS (lbs/day, mitigated)
2.25 44.88
8.52
0.07
0.05
0.04
0.01
Page: 2
URBEMIS 2002 For Windows 7.5.0
File Name: C:\Program Files\Projects2k2\Ei3enhower
Project Name: Eisenhower Drive
Project Location: South Coast Air
On -Road Motor Vehicle Emissions Based on EMFAC2002
Basin (Los Angeles
version 2.2
Drive.urb
area)
DETAIL REPORT
(Pounds/Day - Winter)
Construction Start Month and Year: December, 2003
Construction Duration: 6
Total Land Use Area to be Developed: 0
Maximum Acreage Disturbed Per Day: 0 acres
Single Family Units: 0 Multi -Family Units:
Retail/Office/Institutional/Industrial
acres
0
Square Footage: 0
CONSTRUCTION EMISSION ESTIMATES UNMITIGATED (lbs/day)
Source ROG
*•' 2003***
NOx
CO
SO2
PM10
TOTAL
PM10
EXHAUST
PM10
DUST
Phase 1 - Demolition Emissions
Fugitive Dust -
Off -Road Diesel 10.03
On -Road Diesel 0.00
Worker Trips 0.13
Maximum lbs/day 10.16
-
85.07
0.00
0.33
85.40
68.42
0.00
3.09
71.46
-
_
0 .00
0.00
0.00
0.00
.00
00.0.000
0.011
4.19
-
418
0.0
00.00
4.18
0.00
0.00
0.0
0.01
1
0.01
Phase 2 - Site Grading Emissions
Fugitive Dust _
Off -Road Diesel 11.20
On -Road Diesel 0.00
Worker Trips 0.13
Maximum lbs/day 11.33
_
96.99
0.00
0.33
97.32
74.69
0.00
3.04
77.73
-
0.00
0.00
0.00
4.78
..
0.0000
0.01
9.79
-
00.0000
000
4..78
0.00
0.00
0.00
0.01
0.01
Phase 3 - Building Construction
Bldg Const Off -Road Diesel 9.12
Bldg Const Worker Trips 0.00
Arch Coatings Off -Gas 0.00
70.61
0.00
-
66.21
0.00
_
-
0.00
3.11
0.00
3.11
0.00
0.00
0.00
Arch Coatings Worker Trips 0.00
Asphalt Off -Gas 0.00
0.00
-
0.00
_
0.00
_
0.00
0.00
0.00
Asphalt Off -Road Diesel 0.00
Asphalt On -Road Diesel 0.00
Asphalt Worker Trips 0.00
Maximum lbs/day 9.12
0.00
0.00
0.00
70.61
0.00
0.00
0.00
66.21
0.00
0.00
0.00
0.00
0.00
0.00
3.11
0.00
0.00
0.00
3.11
0.00
0.00
0.00
0.00
Max lbs/day all phases 11.33
97.32
77.73
0.00
4.79
4.78
0.01
*** 2004***
Phase 1 - Demolition Emissions
Fugitive Dust _
Off -Road Diesel 0.00
On -Road Diesel 0.00
Worker Trips 0.00
Maximum lbs/day 0.00
_
0.00
0.00
0.00
0.00
_
0.00
0.00
0.00'
0.00
-
0.00
0.00
0.00
0.00
0.00
0.00
0.00
-
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Phase 2 - Site Grading Emissions
Fugitive Dust _
_
Off -Road Diesel 0.00
On -Road Diesel 0.00
Worker Trips 0.00
Maximum lbs/day 0.00
0.00
0.00
0.00
000 .
_
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
-
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Phase 3 - Building Construction
Bldg Const Off -Road Diesel 9.12
Bldg Const Worker Trips 0.00
Arch Coatings Off -Gas 0.00
67.88
0.00
_
68.25
0.00
0.00
2.89
0.00
2.89
0.00
0.00
0.00
Arch Coatings Worker Trips 0.00
Asphalt Off -Gas 1.11
0.00
_
0.00
0.00
0.00
0.00
0.00
Asphalt Off -Road Diesel 1.90
Asphalt On -Road Diesel 0.28
Asphalt Worker Trips 0.01
Maximum lbs/day 12.43
14.55
9.53
0.01
86.96
14.15
1.05
0.17
83.62
007
0..00
007
0.14 0.
0.00
3.71
68
0.13 0.13
3.0
.70
0.0
0.011
0.0
0.0 1
1
Max lbs/day all phases 12.43
86.96
83.62
0.07
3.71
3.70
0.01
Page: 3
Phase 1 - Demolition Assumptions
Start Month/Year for Phase 1: Dec '03
Phase 1 Duration: 0.3 months
Building Volume Total (cubic feet): 0
Building Volume Daily (cubic feet): 0
Miles per round trip set to zero
Off -Road Equipment
No. Type
Horsepower
Load Factor
1 Crushing/Processing Equip
154
0.780
1 Graders
174
0.575
2 Other Equipment
190
0.620
1 Rubber Tired Loaders
165
0.465
1 Tractor/Loaders/Backhoes
79
0.465
Phase 2 - Site Grading Assumptions
Start Month/Year for Phase 2: Dec '03
Phase 2 Duration: 0.6 months
On -Road Truck Travel (VMT): 0 ,
Off -Road Equipment
No. Type
Horsepower
Load Factor
1 Graders
174
0.575
2 Other Equipment
190
0.620
1 Rollers
114
0.430
1 Surfacing Equipment
437
0.490
1 Tractor/Loaders/Backhoes
79
0.465
Phase 3 - Building Construction Assumptions
Start Month/Year for Phase 3: Dec '03
Phase 3 Duration: 5.1 months
Start Month/Year for SubPhase Building: Dec 103
SubPhase Building Duration: 5.1 months
Off -Road Equipment
No. Type
Horsepower
Load Factor
1 Bore/Dull Rigs
218
0.750
1 Cranes
190
0.430
2 Other Equipment
190
0.620
1 Tractor/Loaders/Backhoes
79
0.465
�---^
Start Month/Year for SubPhase Architectural Coatings:
May 104
SubPhase Architectural Coatings Duration:
0.5 months
Start Month/Year for SubPhase Asphalt: May
'04
SubPhase Asphalt Duration: 0.3 months
Acres to be Paved: 2.8
Off -Road Equipment
No. Type
Horsepower
Load Factor
1 Paving Equipment
ill
0.530
1 Rollers
114
0.430
Hours/Day
8.0
8.0
8.0
8.'0
8.0
Hours/Day
8.0
8.0
8.0
8.0
8.0
Hours/Day
8.0
8.0
8.0
8.0
Hours/Day
8.0
8.0
Page: 4
Changes made to the default values for Land Use Trip Percentages
Changes made to the default values for Construction
Phase 1 mitigation measure Off -Road Diesel Exhaust: Use aqueous diesel fuel
has been changed from off to on.
Phase 1 mitigation measure Off -Road Diesel Exhaust: Use diesel particulate filter
has been changed from off to on.
Phase 1 mitigation measure Off -Road Diesel Exhaust: Use cooled exhaust gas recirculation
has been changed from off to on.
Phase 2 mitigation measure Soil Disturbance: Water exposed surfaces - 3x daily
has been changed from off to on.
Phase 2 mitigation measure Off -Road Diesel Exhaust: Use aqueous diesel fuel
has been changed from off to on.
Phase 2 mitigation measure Off -Road Diesel Exhaust: Use diesel particulate filter
has been changed from off to on.
Phase 2 mitigation measure Off -Road Diesel Exhaust: Use cooled exhaust gas recirculation(EGR)
has been changed from off to on.
Phase 2 mitigation measure On -Road Diesel Exhaust: Use aqueous diesel fuel
has been changed from off to on.
Phase 2 mitigation measure On -Road Diesel Exhaust: Use diesel particulate filter
has been changed from off to on.
Phase 2 mitigation measure On -Road Diesel Exhaust: Use cooled exhaust gas recirculation(EGR)
has been changed from off to on.
Phase 2 mitigation measure Stockpiles: Cover all stock piles with tarps
has been changed from off to on.
Phase 3 mitigation measure Off -Road Diesel Exhaust: Use aqueous diesel fuel
has been changed from off to on.
Phase 3 mitigation measure Off -Road Diesel Exhaust: Use diesel particulate filter
has been changed from off to on.
Phase 3 mitigation measure Off -Road Diesel Exhaust: Use cooled exhaust gas recirculation(EGR)
has been changed from off to on.
Phase 3 mitigation measure Off -Road Diesel Exhaust: Use aqueous diesel fuel
has been changed from off to on.
Phase 3 mitigation measure Off -Road Diesel Exhaust: Use diesel particulate filter
has been changed from off to on.
Phase 3 mitigation measure Off -Road Diesel Exhaust: Use cooled exhaust gas recirculation(EGR
has been changed from off to on.
Phase 3 mitigation measure On -Road Diesel Exhaust: Use aqueous diesel fuel
has been changed from off to on.
Phase 3 mitigation measure On -Road Diesel Exhaust: Use diesel particulate filter
has been changed from off to on.
Phase 3 mitigation measure On -Road Diesel Exhaust: Use cooled exhaust gas recirculation(EGR.)
has been changed from off to on.
Page: 5
ORBEMIS 2002 For Windows 7.5.0
File Name: C:\Program Files\Project32k2\Eisenhower Drive.urb
a Project Name: Eisenhower Drive
Project Location: South
Coast Air Basin (Los
Angeles
area)
On -Road Motor Vehicle Emissions Based
on EMPAC2002
version
2.2
DETAIL REPORT
(Pounds/Day - Summer)
Construction Start Month and Year: December, 2003
Construction Duration: 6
Total Land Use Area to be Developed: 0
acres
Maximum Acreage Disturbed Per Day: 0 acres
Single Family Units: 0 Multi -Family Units:
0
Retail/Office/Institutional/Industrial
Square Footage: 0
CONSTRUCTION EMISSION ESTIMATES UNMITIGATED
(lbs/day)
PM10
PM10
PM10
Source ROG
NOx
CO
S02
TOTAL
EXHAUST
DUST
**• 2003***
Phase 1 - Demolition Emissions
Fugitive Dust -
-
-
-
0.00
-
0.00
Off -Road Diesel 10.03
85.07
68.42
-
4.18
4.18
0.00
On -Road Diesel 0.00
0.00
0.00
0.00
0.00
0.00
0.00
Worker Trips 0.13
0.33
3.04
0.00
0.01
0.00
0.01
Maximum lbs/day 10.16
85.40
71.46
0.00
4.19
4.18
0.01'
Phase 2 - Site Grading Emissions
Fugitive Dust -
-
-
-
0.00
-
0.00
Off -Road Diesel 11.20
96.99
74.69
-
4.78
4.78
0.00
On -Road Diesel 0.00
0.00
0.00
0.00
0.00
0.00
0.00
Worker Trips 0.13
0.33
3.04
0.00
0.01
0.00
0.01
Maximum lbs/day 11.33
97.32
77.73
0.00
4.79
4.78
0.01
Phase 3 - Building Construction
Bldg Const Off -Road Diesel 9.12
70.61
66.21
-
3.11
3.11
0.00
�-. Bldg Const Worker Trips 0.00
0.00
0.00
0.00
0.00
0.00
0.00
Arch Coatings Off -Gas 0.00
-
-
-
-
-
-
I
I Arch Coatings Worker Trips 0.00
0.00
0.00
0.00
0.00
0.00
0.00
Asphalt Off -Gas 0.00
-
-
-
-
-
-
Asphalt Off -Road Diesel 0.00
0.00
0.00
-
0.00
0.00
0.00
Asphalt On -Road Diesel 0.00
0.00
0.00
0.00
0:00
0.00
0.00
Asphalt Worker Trips 0.00
0.00
0.00
0.00
0.00
0.00
0.00
Maximum lbs/day 9.12
70.61
66.21
0.00
3.11
3.11
0.00
Max lbs/day all phases 11.33
97.32
77.73
0.00
4.79
4.78
0.01
*** 2004***
Phase 1 - Demolition Emissions
Fugitive Dust -
-
-
-
0.00
-
0.00
Off -Road Diesel 0.00
0.00
0.00
-
0.00
0.00
0.00
On -Road Diesel 0.00
0.00
0.00
0.00
0.00
0.00
0.00
Worker Trips 0.00
0.00
0.00
0.00
0.00
0.00
0.00
Maximum lbs/day 0.00
0.00
0.00
0.00
0.00
0.00
0.00
Phase 2 - Site Grading Emissions
Fugitive Dust -
-
-
-
0.00
-
0.00
Off -Road Diesel 0.00
0.00
0.00
-
0.00
0.00
0.00
On -Road Diesel 0.00
0.00
0.00
0.00
0.00
0.00
0.00
Worker Trips 0.00
0.00
0.00
0.00
0.00
0.00
0.00
Maximum lbs/day 0.00
0.00
0'.00
0.00
0.00
0.00
0.00
Phase 3 - Building Construction
Bldg Const Off -Road Diesel 9.12
67.88
68.25
-
2.89
2.89
0.00
Bldg Coast Worker Trips 0.00
0.00
0.00
0.00
0.00
0.00
0.00
Arch Coatings Off -Gas 0.00
-
-
-
-
-
-
Arch Coatings Worker Trips 0.00
0.00
0.00
0.00
0.00
0.00
0.00
Asphalt Off -Gas 1.11
-
-
-
-
-
-
Asphalt Off -Road Diesel 1.90
14.55
14.15
-
0.68
0.68
0.00
Asphalt On -Road Diesel 0.28
4.53
1.05
0.07
0.14
0.13
0.01
Asphalt Worker Trips 0.01
0.01
0.17
0.00
0.00
0.00
0.00
Maximum lbs/day 12.43
86.96
83.62
0.07
3.71
3.70
0.01
r--
Max lbs/day all phases 12.43
86.96
83.62
0.07
3.71
3.70
0.01
Page: 6
Phase 1 - Demolition Assumptions
Start Month/Year for Phase 1: Dec 103
Phase 1 Duration: 0.3 months
Building Volume Total (cubic feet): 0
Building Volume Daily (cubic feet): 0
Miles per round trip set to zero
Off -Road Equipment
No. Type
Horsepower
Load Factor
1 Crushing/Processing Equip
154
0.780
1 Graders
174
0.575
2 Other Equipment
190
0.620
1 Rubber Tired Loaders
165
0.465
1 Tractor/Loaders/Backhoes
79
0.465
Phase 2 - Site Grading Assumptions
Start Month/Year for Phase 2: Dec '03
Phase 2 Duration: 0.6 months
On -Road Truck Travel (VMT): 0
Off -Road Equipment
No. Type
Horsepower
Load Factor
1 Graders
174
0.575
2 Other Equipment
190
0.620
1 Rollers
114
0.430
1 Surfacing Equipment
437
0.490
1 Tractor/Loaders/Backhoes
79
0.465
Phase 3 - Building Construction Assumptions
Start Month/Year for Phase 3: Dec '03
Phase 3 Duration: 5.1 months
Start Month/Year for SubPhase Building:
Dec '03
SubPhase Building Duration: 5.1 months
Off -Road Equipment
No. Type
Horsepower
Load Factor
1 Bore/Drill Rigs
218
0.750
1 Cranes
190
0.430
2 Other Equipment
190
0.620
1 Tractor/Loaders/Backhoes
79
0.465
Start Month/Year for SubPhase Architectural Coatings:
May '04
SubPhase Architectural Coatings Duration: 0.5 months
Start Month/Year for SubPhase Asphalt:
May 104
SubPhase Asphalt Duration: 0.3 months
Acres to be Paved: 2.8
Off -Road Equipment
No. Type
Horsepower
Load Factor
1 Paving Equipment
ill
0.530
1 Rollers
114
0.430
CONSTRUCTION EMISSION ESTIMATES MITIGATED (lbs/day)
Source ROG
NOx CO
Son
*** 2003***
Phase-! - Demolition Emissions
Fugitive Dust -
_ _
_
Off -Road Diesel 1.00
43.90 6.84
-
On -Road Diesel 0.00
0.00 0.00
0.00
Worker Trips 0.13
0.33 3.04
0.00
Maximum lbs/day 1.13
44.23 9.88
0.00
Phase 2 - Site Grading Emissions
Fugitive Dust -
_ _
_
Off -Road Diesel 1.12
50.05 7.47
-
On -Road Diesel 0.00
0.00 0.00
0.00
Worker Trips 0.13
0.33 3.04
0.00
Maximum lbs/day 1.25
50.38 10.51
0.00
Phase 3 - Building Construction
Bldg Const Off -Road Diesel 0.91
36.43 6.62
-
Bldg Const Worker Trips 0.00
0.00 0.00
0.00
Arch Coatings Off -Gas 0.00
- _
_
Arch Coatings Worker Trips 0.00
0.00 0.00
0.00
Asphalt Off -Gas 0.00
- _
_
Asphalt Off -Road Diesel 0.00
0.00 0.00
-
Asphalt On -Road Diesel 0.00
0.00 0.00
0.00
Asphalt Worker Trips 0.00
0.00 0.00
0.00
Maximum lbs/day 0.91
36.43 6.62
0.00
Max lbs/day all phases 1.25
50.38 10.51
0.00
Hours/Day
8.0
8.0
8.0
8.0
8.0
Hours/Day
8.0
8.0
8.0
8.0
8.0
Hours/Day
8.0
8.0
8.0
8.0
Hours/Dav
8.0
8.0
PM10 PM10
TOTAL EXHAUST
0.00 -
0.05 0.05
0.00 0.00
0.01 0.00
0.06 0.05
0.00 -
0.05 0.05
0.00 0.00
0.01 0.00
0.06 0.05
0.03 0.03
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.03 0.03
0.06 0.05
PM10
DUST
0.00
0.00
0.00
0.01
0.01
0.00
0.00
0.00
0.01
0.01
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.01
Page: 7
*** 2004***
Phase 1 - Demolition Emissions
` Fugitive Dust
-
-
-
-
0.00
-
0.00
Off -Road Diesel
0.00
O.bO
0.00
-
0.00
0.00
0.00
On -Road Diesel
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Worker Trips
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Maximum lbs/day
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Phase 2 - Site Grading Emissions
Fugitive Dust
-
-
-
-
0.00
-
0.00
Off -Road Diesel
0.00
0.00
0.00 z
-
0.00
'0.00
0.00
On -Road Diesel
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Worker Trips
0.00
0.00
0.00
0.00
0.00
0.00
'0.00
Maximum lbs/day
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Phase 3 - Building Construction
Bldg Const Off -Road Diesel
0.91
.35.03
6.83
-
0.03
0.03
0.00
Bldg Const Worker Trips
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Arch Coatings Off -Gas
0.00
-
-
-
-
-
-
Arch Coatings Worker Trips
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Asphalt Off -Gas
1.11
-
-
-
-
-
-
Asphalt Off -Road Diesel
0.19
7.51
1.42
-
0.01
0.01
0.00
Asphalt On -Road Diesel
0.03
2.34
0.11
0.07
0.01
0.00
0.01
Asphalt Worker Trips
0.01
0.01
0.17
0.00
0.00
0.00
0.00
Maximum lbs/day
2.25
44.88
8.52
0.07
0.05
0.04
0.01
Max lbs/day all phases
2.25
44.88
8.52
0.07
0.05
0.04
0.01
Construction -Related Mitigation Measures
Phase 1: Off -Road Diesel Exhaust: Use aqueous diesel fuel
Percent Reduction(ROG 0.0% NOx 14.0% CO 0.0% S02 0.0% PM10 63.0%)
Phase 1: Off -Road Diesel Exhaust: Use diesel particulate filter
Percent Reduction(ROG 0.0% NOx 0.0% CO 0.0% S02 0.0% PM10 80.0%)
4r--- Phase 1: Off -Road Diesel Exhaust: Use cooled exhaust gas recirculation
Percent Reduction(ROG 90.0% NOx 40.0% CO 90.0% S02 0.0% PM10 85.0%)
Phase 2: Soil Disturbance: Water exposed surfaces - 3x daily
a Percent Reduction(ROG 0.0% NOx 0.0% CO 0.0% S02 0.0% PM10 50.0%)
Phase 2: Off -Road Diesel Exhaust: Use aqueous diesel fuel
Percent Reduction(ROG 0.0% NOx 14.0% CO 0.0% S02 0.0% PM10 63.0%)
Phase 2: Off -Road Diesel Exhaust: Use diesel particulate filter
Percent Reduction(ROG 0.0% NOx 0.0% CO 0.0% S02 0.0% PM10 80.0€)
Phase 2: Off -Road Diesel Exhaust: Use cooled exhaust gas recirculation(EGR)
Percent Reduction(ROG 90.0% NOr. 40.0% CO 90.0% S02 0.0% PM10 85.0%)
Phase 2: On -Road Diesel Exhaust: Use aqueous diesel fuel
Percent Reduction(ROG 0.0% NOx 14.0% CO 0.0% S02 0.0% PM10 63.0%)
Phase 2: On -Road Diesel Exhaust: Use diesel particulate filter
Percent Reduction(ROG 0.0% NOx 0.0% CO 0.0% S02 0.0% PM10 80.0%)
Phase 2: On -Road Diesel Exhaust: Use cooled exhaust gas recirculation(EGR)
Percent Reduction(ROG 90.0% NOx 40.0% CO 90.0% S02 0.0% PMlO 85.0%)
Phase 2: Stockpiles: Cover all stock piles with tarps
Percent Reduction(ROG 0.0% NOx 0.0% CO 0.0% S02 0.0% PM10 9.5%)
Phase 3: Off -Road Diesel Exhaust: Use aqueous diesel fuel
Percent Reduction(ROG 0.0% NOx 14.0% CO 0.0% S02 0.0% PM10 63.0%)
Phase 3: Off -Road Diesel Exhaust: Use diesel particulate filter
Percent Reduction(ROG 0.0% NOx 0.0% CO 0.0% S02 0.0% PM10 80.0%)
Phase 3: Off -Road Diesel Exhaust: Use cooled exhaust gas recirculation(EGR)
Percent Reduction(ROG 90.0% NOx 40.0% CO 90.0% S02 0.0% PM10 85.0%)
Phase 3: Off -Road Diesel Exhaust: Use aqueous diesel fuel
Percent Reduction(ROG 0.0% NOx 14.0% CO 0.0% S02 0.0% PM10 63.0%)
Phase 3: Off -Road Diesel Exhaust: Use diesel particulate filter
Percent Reduction(ROG 0.0% NOx 0.0% CO 0.0% S02 0.0% PM10 80.0%)
Phase 3: Off -Road Diesel Exhaust: Use cooled exhaust gas recirculation(EGR)
Percent Reduction(ROG 90.0% NOx 40.0% CO 90.0% S02 0.0% PM10 85.0%)
Phase 3: On -Road Diesel Exhaust: Use aqueous diesel fuel
Percent Reduction(ROG 0.04 NOx 14.0% CO 0.0% S02 0.0% PM10 63.0%)
Phase 3: On -Road Diesel Exhaust: Use diesel particulate filter
Percent Reduction(ROG 0.0% NOx 0.0% CO 0.0% S02 0.0% PM10 80.0$)
Phase 3: On -Road Diesel Exhaust: Use cooled exhaust gas recirculation(EGR)
Percent Reduction(ROG 90.0% NOx 40.0% CO 90.0% S02 0.0% PM10 85.0%)
r� Phase 1 - Demolition Assumptions
Start Month/Year for Phase 1: Dec '03
Phase 1 Duration: 0.3 months
Building Volume Total (cubic feet): 0
Page: 8
Building Volume Daily (cubic feet): 0
Miles per round trip set to zero
Off -Road Equipment
No. Type
Horsepower
Load Factor
1 Crushing/Processing Equip
154
0.780
1 Graders
174
0.575
2 Other Equipment
190
0.620
1 Rubber Tired Loaders
165
0.465
1 Tractor/Loaders/Backhoes
79
0.465
Phase 2 - Site Grading Assumptions
Start Month/Year for Phase 2: Dec '03
Phase 2 Duration: 0.6 months
On -Road Truck Travel (VMT): 0
Off -Road Equipment
No. Type
Horsepower
Load Factor
1 Graders
174
0.575
2 Other Equipment
190
0.620
1 Rollers
114
0.430
1 Surfacing Equipment
437
0.490
1 Tractor/Loaders/Backhoes
79
0.465
Phase 3 - Building Construction Assumptions
Start Month/Year for Phase 3: Dec '03
Phase 3 Duration: 5.1 months
Start Month/Year for SubPhase Building: Dec
'03
SubPhase Building Duration: 5.1 months
Off -Road Equipment
No. Type
Horsepower
Load Factor
1 Bore/Drill Rigs
218
0.750
1 Cranes
190
0.430
2 Other Equipment
190
0.620
1 Tractor/Loaders/Backhoes
79
0.465
Start Month/Year for SubPhase Architectural
Coatings:
May 104
SubPhase Architectural Coatings Duration:
0.5 months
Start Month/Year for SubPhase Asphalt: May
'04
SubPhase Asphalt Duration: 0.3 months
Acres to be Paved: 2.8
Off -Road Equipment
No. Type
Horsepower
Load Factor
1 Paving Equipment
ill
0.530
1 Rollers
114.
0.430
Hours/Day
8.0
8.0
8.0
8.0
8.0
Hours/Day
8.0
8.0
8.0
8.0
8.0
Hours/Day
8.0
8.0
8.0
8.0
Hours/Day
8.0
8.0
Page: 9
Changes made to the default values for Land Use Trip Percentages
r--
f
Changes made to the default values for Construction
Phase 1 mitigation measure Off -Road Diesel Exhaust: Use aqueous diesel fuel
has been changed from off to on.
Phase 1 mitigation measure Off -Road Diesel Exhaust: Use diesel particulate filter
has been changed from off to on.
Phase 1 mitigation measure Off -Road Diesel Exhaust: Use cooled exhaust gas recirculation
has been changed from off to on.
Phase 2 mitigation measure Soil Disturbance: Water exposed surfaces - 3x daily
has been changed from off to on.
Phase 2 mitigation measure Off -Road Diesel Exhaust: Use aqueous diesel fuel
has been changed from off to on.
Phase 2 mitigation measure Off -Road Diesel Exhaust: Use diesel particulate filter
has been changed from off to on.
Phase 2 mitigation measure Off -Road Diesel Exhaust: Use cooled exhaust gas recirculation(EGR)
has been changed from off to on.
Phase 2 mitigation measure On -Road Diesel Exhaust: Use aqueous diesel fuel
has been changed from off to on.
Phase 2 mitigation measure On -Road Diesel Exhaust: Use diesel particulate filter
has been changed from off to on.
Phase 2 mitigation measure On -Road Diesel Exhaust: Use cooled exhaust gas recirculation(EGR)
has been changed from off to on.
Phase 2 mitigation measure Stockpiles: Cover all stock piles with tarps
has been changed from off to on.
Phase 3 mitigation measure Off -Road Diesel Exhaust: Use aqueous diesel fuel
has been changed from off to on.
Phase 3 mitigation.measure Off -Road Diesel Exhaust: Use diesel particulate filter
has been.changed from off to on.
Phase 3 mitigation measure Off -Road Diesel Exhaust: Use cooled exhaust gas recirculation(EGR)
has been changed from off to on.
Phase 3 mitigation measure Off -Road Diesel Exhaust: Use aqueous diesel fuel
has been changed from off to on.
Phase 3 mitigation measure Off -Road -Diesel Exhaust: Use diesel particulate filter
has been changed from off to on.
Phase 3 mitigation measure Off -Road Diesel Exhaust: Use cooled exhaust gas recirculation(EGR)
has been changed from off to on.
Phase 3 mitigation measure On -Road Diesel Exhaust: Use aqueous diesel fuel
has been changed from off to on.
Phase 3 mitigation measure On -Road Diesel Exhaust:. Use diesel particulate filter
has been changed from off to on.
Phase 3 mitigation measure On -Road Diesel Exhaust: Use cooled exhaust gas recirculation(EGR)
has been changed from off to on.
Page: 10
URBEMIS 2002 For Windows 7.5.0
File Name:
C:\Program Files\Projects2k2\Ei3enhower
Drive.urb
Project Name:
Eisenhower Drive
Project Location:
South
Coast Air Basin
(Los
Angeles'area)
On -Road Motor Vehicle Emissions Based
on EMFAC2002
version
2.2
DETAIL REPORT
(Tons/Year)
Construction Start Month and Year: December,
2003
Construction Duration: 6
Total Land Use Area to be Developed: 0
acres
Maximum Acreage Disturbed Per
Day: 0 acres
Single Family Units: 0 Multi -Family Units:
0
Retail/Office/Institutional/Industrial
Square Footage: 0
CONSTRUCTION EMISSION ESTIMATES UNMITIGATED (tons/year)
Source
*** 2003***
ROG
NOx
CO
S02
PM10
TOTAL
PM10
EXHAUST
Phase 1 - Demolition Emissions
Fugitive Dust
-
-
Off -Road Diesel
0.03
0.28
0.23
-
-
0.00
0.01
On -Road Diesel
0.00
0.00
0.00
0.00
0.00
0.01
0.00
Worker Trips
Total tons/year
0.00
0.03
0.00
0.28
0.01
0.00
0.00
0.00
0.24
0.00
0.01
0.01
Phase 2 - Site Grading Emissions
Fugitive Dust
-
-
Off -Road Diesel
0.07
0.64
0.49
-
0.00
On -Road Diesel
0.00
0.00
0.00
-
0.00
0.00
0.00
0.03
Worker Trips
Total tons/year
0.00
0.07
0.00
0.02
0.00
0.00
0.00
0.00
0.64
0.51
0.00
0.03
0.03
Phase 3 - Building Construction
Bldg Const Off -Road Diesel
0.01
0.08
0.07
Bldg Const Worker Trips
0.00
0.00
0.00
-
0.00
0.00
0.00
0.00
Arch Coatings Off -Gas
0.00
-
_
0.00
Arch Coatings worker Trips
0.00
0.00
0.00
0.00
0.00
Asphalt Off -Gas
0.00
-
_
0.00
Asphalt Off -Road Diesel
0.00
0.00
0.00
-
0.00
Asphalt On -Road Diesel
0.00
0.00
0.00
0.00
0.00
0.00
Asphalt Worker Trips
0.00
0.00
0.00
0.00
0.00
0.00
Total tons/year
0.01
0.08
0.07
0.00
0.00
0.00
0.00
Total all phases tons/yr
0.11
1.00
0.82
0.00
0.04
0.04
*** 2004***
Phase 1 - Demolition Emissions
Fugitive Dust
-
Off -Road Diesel
0.00
-
0.00
-
0.00
0.00
On -Road Diesel
0.00
0.00
0.00
-
0.00
0.00
0.00
0.00
Worker Trips
Total tons/year
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Phase 2 - Site Grading Emissions
Fugitive Dust
-
Off -Road Diesel
0.00
-
0.00
-
0.00
0.00
On -Road Diesel
0.00
0.00
0.00
-
0.00
0.00
0.00
0.00
Worker Trips
Total tons/year
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Phase 3 - Building Construction
Bldg Const Off -Road Diesel
0.50
3.75
3.75
Bldg Const Worker Trips
0.00
0.00
0.00
-
0.00
0.15
0.00
0.15
Arch Coatings Off -Gas
0.00
-
_
0.00
Arch Coatings Worker Trips
0.00
0.00
0.00
0.00
0.00
Asphalt Off -Gas
0.00
_
_
0.00
Asphalt Off -Road Diesel
0.01
0.05
0.05
Asphalt On -Road Diesel
0.00
0.01
0.00
-
0.00
0.00
0.00
Asphalt Worker Trips
0.00
0.00
0.00
0.00
0.00
0.00
Total tons/year
0.51
3.81
3.80
0.00
0.00
0.00
0.15
0.15
Total all phases tons/yr
0.51
3.81
3.80
0.00
0.15
0.15
PM10
DUST
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Page: 11
►-- Phase 1 - Demolition Assumptions
j Start Month/Year for Phase 1: Dec '03
Phase 1 Duration: 0.3 months
f
Building Volume Total (cubic feet): 0
4 Building Volume Daily (cubic feet): 0
Miles per round trip set to zero
Off -Road Equipment
No. Type
Horsepower
Load Factor
Hours/Day
1 Crushing/Processing Equip
154
0.780
8.0
1 Graders
174
0.575
8.0
2 Other Equipment
190
0.620
8.0
1 Rubber Tired Loaders
165
0.465
8.0
1 Tractor/Loaders/Backhoes
79
0.465
8.0
Phase 2 - Site Grading Assumptions
Start Month/Year for Phase 2: Dec 103
Phase 2 Duration:.0.6 months
On -Road Truck Travel (VMT): 0
Off -Road Equipment
No. Type
Horsepower
Load Factor
Hours/Day
1 Graders
174
0.575
8.0
2 Other Equipment
190
0.620
8.0
1 Rollers
114
0.430
8.0
1 Surfacing Equipment
437
0.490
8.0
1 Tractor/Loaders/Backhoes
79
0.465
8.0
Phase 3 - Building.Construction Assumptions
Start Month/Year for Phase 3: Dec '03
Phase 3 Duration: 5.1 months
Start Month/Year for SubPhase Building:
Dec '03
SubPhase Building Duration: 5.1 months
Off -Road Equipment
No. Type
Horsepower
Load Factor
Hours/Day
1 Bore/Drill Rigs
218
0.750
8.0
1 Cranes
190
0.430
8.0
2 Other Equipment
190
0.620
8.0
1 Tractor/Loaders/Backhoes
79
0.465
8.0
Start Month/Year for SubPhase Architectural
Coatings: May 104
SubPhase Architectural Coatings Duration:
0.5 months
Start Month/Year for SubPhase Asphalt:
May 104
SubPhase Asphalt Duration: 0.3 months
Acres to be Paved: 2.8
Off -Road Equipment
No. Type
Horsepower
Load Factor
Hours/Day
1 Paving Equipment
111
0.530
8.0
1 Rollers
114
0.430
8.0
CONSTRUCTION EMISSION ESTIMATES MITIGATED
(tons/year)
PM10
PM10
PM10
Source ROG
NOx CO
S02
TOTAL
EXHAUST
DUST
*** 2003***
Phase 1 - Demolition Emissions
Fugitive Dust -
- -
-
0.00
-
0.00
Off -Road Diesel 0.00
0.14 0.02
-
0.00
0.00
0.00
On -Road Diesel 0.00
0.00 0.00
0.00
0.00
0,00
0.00
Worker Trips 0.00
0.00 0.01
0.00
0.00
0.00
0.00
Total tons/year 0.00
0.14 0.03
0.00
0.00
0.00
0.00
Phase 2 - Site Grading Emissions
Fugitive Dust -
- -
-
0.00
-
0.00
Off -Road Diesel 0.01
0.33 0.05
-
0.00
0.00
0.00
On -Road Diesel 0.00
0.00 0.00
0.00
0.00.
0.00
0.0a
Worker Trips 0.00
0.00 0.02
0.00
0.00
0.00
0.00
Total tons/year 0.01
0.33 0.07
0.00
0.00
0.00
0.00
Phase 3 - Building Construction
Bldg Const Off -Road Diesel 0.00
0.04 0.01
-
0.00
0.00
0.00
Bldg Const Worker Trips 0.00
0.00 0.00
0.00
0.00
0.00
0.00
Arch Coatings Off -Gas 0.00
- -
-
-
-
-
Arch Coatings Worker Trips 0.00
0:00 0.00
0.00
0.00
0.00
0.00
Asphalt Off -Gas 0.00
- -
-
-
-
-
Asphalt Off -Road Diesel 0.00
0.00 0.00
-
0.00
0.00
0.00
Asphalt On -Road Diesel 0.00
0.00 0.00
0.00
0.00
0.00
0.00
'~ Asphalt Worker Trips 0.00
0.00 0.00
0.00
0.00
0.00
0.00
Total tons/year 0.00
0.04 0.01
0.00
0.00
0.00
0.00
Total all phases tons/yr 0.01
0.51 0.11
0.00
0.00
0.00
0.00
Page: 12
*** 2004***
Phase 1 - Demolition Emissions
Fugitive Dust
-
-
-
-
0.00
-
0.00
Off -Road Diesel
0.00
0.00
0.00
-
0.00
0.00
0.00
On-Road'Diesel
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Worker Trips
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Total tons/year
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Phase 2 - Site Grading Emissions
Fugitive Dust
-
-
-
-
0.00
-
0.00
Off -Road Diesel
0.00
0.00
0.00
-
0.00
0.00
0.00
On -Road Diesel
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Worker Trips
0.00
0.00
0.00
0.00
0.00
0.00
'0.00
Total tons/year
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Phase 3 - Building Construction
Bldg Const Off -Road Diesel
0.05
1.94
0.38
-
0.00
0.00
0.00
Bldg Const Worker Trips
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Arch Coatings Off -Gas
0.00
-
-
-
-
-
-
Arch Coatings Worker Trips
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Asphalt Off -Gas
0.00
-
-
-
-
-
-
Asphalt Off -Road Diesel
0.00
.0.03
0.01
-
0.00
0.00
0.00
Asphalt On -Road Diesel
0.00
0.01
0.00
0.00
0.00
0.00
0.00
Asphalt Worker Trips
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Total tons/year
0.05
1.98
0.39
0.00
0.00
0.00
0.00
Total all phases tons/yr
0.05
1.98
0.39
0.00
0.00
0.00
0.00
Construction -Related Mitigation Measures
Phase 1: Off -Road Diesel Exhaust: Use aqueous diesel fuel
Percent Reduction(ROG 0.0% NOx 14.0% CO 0.0% S02 0.0% PM10 63.0%)
Phase 1: Off -Road Diesel Exhaust: Use diesel particulate filter
Percent Reduction(ROG 0.0% NOx 0.0% CO 0.0% S02 0.0% PM10 80.0%)
Phase 1: Off -Road Diesel Exhaust: Use cooled exhaust gas recirculation
Percent Reduction(ROG 90.0% NOx 40.0% CO 90.0% S02 0.0% PM10 85.0%)
Phase 2: Soil Disturbance: Water exposed surfaces - 3x daily
Percent Reduction(ROG 0.0% NOx 0.0% CO 0.0% S02 0.0% PM10 50.0%)
Phase 2: Off -Road Diesel Exhaust: Use aqueous diesel fuel
Percent Reduction(ROG 0.0% NOx 14.0% CO 0.0% S02 0.0% PM10 63.0%)
Phase 2: Off -Road Diesel Exhaust: Use diesel particulate filter
Percent Reduction(ROG 0.0% NOx 0.0% CO 0.0% S02 0.0% PM10 80.0%)
Phase 2: Off -Road Diesel Exhaust: Use cooled exhaust gas recirculation(EGR)
Percent Reduction(ROG 90.0% NOx 40.0% CO 90.0% S02 0.0% PM10 85.0%)
Phase 2: On -Road Diesel Exhaust: Use aqueous diesel fuel
Percent Reduction(ROG 0.0% NOx 14.0% CO 0.0% S02 0.0% PM10 63.0%)
Phase 2: On -Road Diesel Exhaust: Use diesel particulate filter
Percent Reduction(ROG 0.0% NOx 0.0% CO 0.0% S02 0.0% PM10 80.0%)
Phase 2: On -Road Diesel Exhaust: Use cooled exhaust gas recirculation(EGR)
Percent Reduction(ROG 90.0% NOx 40.0% CO 90.0% S02 0..0% PM10 85.0%)
Phase 2: Stockpiles: Cover all stock piles with tarps
Percent Reduction(ROG 0.0% NOx 0.0% CO 0.0% S02 0.0% PM10 9.5%)
Phase 3: Off -Road Diesel Exhaust: Use aqueous diesel fuel
Percent Reduction(ROG 0.0% NOx 14.0% CO 0.0% S02 0.0% PM10 63.0%)
Phase 3: Off -Road Diesel Exhaust: Use diesel particulate filter
Percent Reduction(ROG 0.0% NOx 0.0% CO 0.0% S02 0.0% PM10 80.0%)
Phase 3: Off -Road Diesel Exhaust: Use cooled exhaust gas recirculation(EGR)
Percent Reduction(ROG 90.0% NOx 40.0% CO 90.0% S02 0.0% PM10 85.0%)
Phase 3: Off -Road Diesel Exhaust: Use aqueous diesel fuel
Percent Reduction(ROG 0.0% NOx 14.0% CO 0.0% S02 0.0% PM10 63.0%)
Phase 3: Off -Road Diesel Exhaust: Use diesel particulate filter
Percent Reduction(ROG 0.0% NOx 0.0% CO 0.0% S02 0.0% PM10 80.0%)
Phase 3: Off -Road Diesel Exhaust: Use cooled exhaust gas recirculation(EGR)
Percent Reduction(ROG 90.0% NOx 40.0% CO 90.0% S02 0.0% PM10 85.0%)
Phase 3: On -Road Diesel Exhaust: Use aqueous diesel fuel
Percent Reduction(ROG 0.0% NOx 14.0% CO 0.0% S02 0.0% PM10 63.0%)
Phase 3: On -Road Diesel Exhaust: Use diesel particulate filter
Percent Reduction(ROG 0.0% NOx 0.0% CO 0.0% S02 0.0% PM10 80.0%)
Phase 3: On -Road Diesel Exhaust: Use cooled exhaust gas recirculation(EGR)
Percent Reduction(ROG 90.0% NOx 40.0% CO 90.0% S02 0.0% PM10 85.0%)
Phase 1 - Demolition Assumptions
Start Month/Year for Phase 1: Dec '03
Phase 1 Duration: 0.3 months
Building Volume Total (cubic feet): 0
Page: 13
Building Volume Daily (cubic feet): 0
fPm ` Miles per round trip set to zero
I Off -Road Equipment
No. Type
Horsepower
Load Factor
Hours/Day
1 Crushing/Processing Equip
154
0.780
8.0
1 Graders
174
0.575
6.0
2 Other Equipment
190
0.620
8.0
1 Rubber Tired Loaders
165
0.465
8.0
1 Tractor/Loaders/Backhoes
79
0.465
8.0
Phase 2 - Site Grading Assumptions
Start Month/Year for Phase 2: Dec 103
Phase 2 Duration: 0.6 months
On -Road Truck Travel (VMT): 0
Off -Road Equipment
No. Type
Horsepower
Load Factor
Hours/Day
1 Graders
174
0.575
8.0
2 Other Equipment
190
0.620
8.0
1 Rollers
114
0.430
8.0
1 Surfacing Equipment
437
0.490
8.0
1 Tractor/Loaders/Backhoes
79
0.465
8.0
Phase 3 - Building Construction Assumptions
Start Month/Year for Phase 3: Dec '03
Phese 3 Duration: 5.1 months
Start Month/Year for SubPhase Building: Dec 103
SubPhase Building Duration: 5.1 months
Off -Road Equipment
No. Type
Horsepower
Load Factor
Hours/Day
1 Bore/Drill Rigs
218
0.750
8.0
i Cranes
190
0.430
6.0
2 Other Equipment
190
0.620
8.0
1 Tractor/Loaders/Backhoes
79
0.465
8.0
Start Month/Year for SubPhase Architectural
Coatings:
May 104
SubPhase Architectural Coatings Duration:
0.5 months
Start Month/Year for SubPhase Asphalt: May
'04
SubPhase Asphalt Duration: 0.3 months
r Acres to be Paved: 2.8
Off -Road Equipment
No. Type
Horsepower
Load Factor
Hours/Day
1 Paving Equipment
ill
0.530
8.0
1 Rollers
114-
0.430
8.0
Eisenhower Drive Bridge and Drainage improvements
Comment Letter from
Carol Gaubatz
Native American Heritage Commission
P:1ProjectsUNoffattU2TC 090204.doC 5
Responses to Comments
NATWE AMERMN HERITAGE COMMISSION
915 CAPriOL UML. ROOM 384
SACF�AMENTO, CA 9=4
p"al 655-4m
(916) aS1-0110 —Fax
Ault 28, 2004
Mr. Oscar Ora
City of Le Qtdtrta
78495 Calve Tartrpioo
L,o Qukrh, CA 02253
RaK Negion peclsmdon; Eisenhower Drive dridpe and Drainage improvements
SCHO 2004071144
Dear Mr; Oros
Tho* you lbr the appn ! _Ai Y so oorrartenl on the aboveom a w ionsnt. The Commission
was aW to perform s record search of its Sacred Lands File for ftm pre ject ensa, which failed to Indio
#w presence of Native American cuftni rssounose In the immediate project apes. The obealm of
specific site information in the Sacred Lands Fite does not indicate the absence of cultural raoourcrc in
any projed areo. Other sourove or cultural resources should also be ow6csed fbr Inlbtmation re9ardfg
known and recorded stms
Earl aansuhsti a - with Vibes in your v - Is the bait war 10 evold amend oted discoveries
on.
a project is u nda way. Enclosed is a Be or Native Ameltsm irndividualsloMankol orts that may have
knowledge of cutanal reeourvsc in the prgect arsrr. The Commission rteKae no a reoarnmandation of a
single individual or group overanof o Phase dadall those listed; If they canna, supply you with
specific WonT a*m, they may be able to recommend others with of ! III' krwwledge. Sy contacting ati
those listed, yow orgy Ondion wi/ bob tier able to respond to claims of failure to omrautt with the
appl opriais tribe or soup. If you have not received a response within two weeks' time, we rreommend
that you.foilow-up with a telephone call to make aure that the ir4ormation was received.
Lack of wrl4ce evidence of arcl wologicat rveouroae does not preclude the eAssterm of
archeological resounoes_ Lead seeress should includee proatsions for acadentaNy diecovened
of%4 FIROWqdW.0ml nesour+oes duriM construction per Califorrtia EnvbcxN, m tW Quality Act (CEQA), Public
Resources Code V W54,3 (0. Haab and Sated Code 67050.3; and Public f4esotu+aes Code "W7.9e
mandate the process to be fo awed in the event of an accidental d"®eavery of any human remains in a
bcadon,other then s decked care simy and mould be Included in all envherrnet W dacwnenta. K you
homm any questions, please contact me at (916) 653-6251.
mete".It_
C6-. 8! do Ctea fthouse
NAHC-1
NAHG2
Eisenhower Drive Bridge and Drainage Improvements
Responses to Comments from
Carol Gaubatz
Native American Heritage Commission
P:1PrgedslMoffattlRTC 090204.doc 6
Responses to Comments
Eisenhower Drive Bridge and Drainage Improvements
Response to Comm ent_NAHC-1
As indicated in the MND, the project site encompasses approximately 2.8 acres and is located
almost entirely .within the Eisenhower Drive right-of-way. (ROW). The project area and many of
the surrounding land uses have been subject to_previous earth moving activities associated with
construction of the Eisenhower Drive and the La Quinta Evacuation Channel, implementation of
the existing drainage network, and construction of surrounding residential uses; therefore, the
site has been historically disturbed. The portion of 'the project site outside of the existing
roadway ROW consists of approximately 8,930 square feet of land that was disturbed by
construction of adjacent residential uses. It is likely that any cultural resources present within
the area would have been previously unearthed and removed or discarded. Further, project -
related construction would include limited grading and excavation operations to implement the
proposed roadway and drainage improvements. These operations would occur in previously
disturbed areas and would be minor in nature. The previously disturbed condition of the project
site, the limited amount of earth movement associated with the project, and the lack of records
identified in the vicinity of the project site creates an unlikely scenario for cultural resource
disturbance. Additionally and as identified in the MND, implementation of Mitigation Measures
5, 6, and 7 would sufficiently mitigate any possible impacts to a level considered less than
significant. For these reasons, additional records searches, consultation, and/or an
archaeological surrey are not warranted for the proposed project.
Response to Comment NAHC-2
Implementation of Mitigation Measures 5 and 6 in the MND require the presence of an
archaeological monitor during pre -grading meetings, initial site grading, and drilling activities.
Additionally, Mitigation Measures 6 and 7 in the MND specify the provisions for accidental
discovery of archaeological resources or human remains during construction. No additional
mitigation for archaeological or cultural resources is required.
P:wrajKUWoftMTC_000ta.doc 7 Responses to Comments
MITIGATION MONITORING PROGRAM
FOR THE
EISENHOWER DRIVE IMPROVEMENT PROJECT
Prepared for:
The City of La Quinta
78-495 Calle Tampico
La Quinta, California 92253
Contact: Oscar Orci
Planning Manager
(760) 777-7000
Prepared by:
BonTerra Consulting
151 Kalmus Drive, Suite E-200
Costa Mesa, California 92626
Contact: Sam Stewart
Project Manager
(714) 444-9199
April 7, 2004
Mitigation Monitoring Program
1.0 INTRODUCTION
Section 21081.6 of the State of California Public Resources Code requires a Lead • or
Responsible Agency that approves or carries out a project where a mitigated negative
declaration (MND) has identified significant environmental effects to adopt a "reporting or
monitoring program for adopted or required changes, to mitigate or avoid significant
environmental effects." The City of La Quinta is the Lead Agency for the Eisenhower Drive
Bridge and Drainage Improvements MND and, therefore, is responsible for implementation of
the mitigation monitoring program. The MND has been prepared for the Eisenhower Drive
Bridge and Drainage Improvements project which addressed the potential environmental
impacts and, where appropriate, recommended measures to mitigate these impacts. As such, a
mitigation measure reporting and monitoring program is required for the MND to ensure that all
relevant mitigation measures that have been adopted are implemented.
Section 2 describes the roles of responsible parties in implementing and monitoring the adopted
mitigation measures, and generally describes the program procedures.
Table 1 in Section 3 includes the list of mitigation measures and identifies the timing of the
implementation or verification of each measure, the method of verification, and the party
responsible for verifying that the measure is complete. The City is responsible for the
implementation of each measure, and the City representative is responsible for verifying that the
measure has been satisfactorily completed, and/or written evidence submitted to the City, which
verifies that the measure has been satisfactorily completed.
2.0 PROJECT MANAGEMENT
2.1 RESPONSIBILITIES
The mitigation monitoring plan (MMP) for the Eisenhower Drive Bridge and Drainage
Improvements project will be in place through construction of the project or until all mitigation
measures are implemented. The City of La Quinta is the Lead Agency for the project. If
required, the City will be responsible for designating another responsible agency to take
responsibility for implementation of portions of the MMP, if and when appropriate.
The Community Development Department of the City of La Quinta is primarily responsible for
verifying compliance with the mitigation measures listed within Section 3. 'The Director of the
Community Development Department serves the primary role of coordination and verification of
compliance for all parties involved. All parties, or designated assignees, are responsible for
ensuring that the mitigation measures are completed, and are vested with the authority to act
accordingly.
2.2 GENERAL PROCEDURES
The Director of the Community Development Department, or designated assignee, will be
responsible for the overall management of the MMP. Assignments of responsibility are included
in Section 3.
The above -noted designated "monitor" shall oversee elements of the MMP and review
compliance through the use of procedures developed by the Director of the Community
Development Department. The designated monitor shall ensure compliance with the adopted
mitigation measure and ensure proper action is taken on each measure. If it is found that an
adopted mitigation measure is not being properly implemented, the Director of the Community
Development Department shall require corrective actions to ensure adequate implementation.
CADocumm s and So&V$%AdmnsascorYD"MopWMP.122303.00c 1 Eisenhower Drive Improvement Pried
Mitigation Monitoring Program
3.0 MITIGATION MONITORING MATRIX
A matrix of mitigation measures for the Eisenhower Drive Bridge and Drainage Improvements
project is provided in Table 1. Column one identifies the section of the MND in which the
mitigation measure is found, and lists the number and specific text of the mitigation measure.
Column Two identifies the timing for mitigation implementation. Column Three lists the party
responsible for monitoring and verifying that the measure has been satisfactorily completed,
while Column Four lists the funding source of the measure. The City position level listed in
Column Three (Responsible Party) would generally be the individual responsible for approving
the mitigation measure. However, there would be circumstances that require a higher level of
approval than available within the lead agency.
CADocuments and Settings%Administrator%DesktopWMP-122303.DOC 2 Eisenhower Drive Improvement Project
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