HomeMy WebLinkAboutDune Palms AQ Conformity Report
Table of Contents
Section 1. Introduction and Project Description ..................................................................... 1
1.1. Project Description ........................................................................................................................ 1
1.1.1 Project Purpose ..................................................................................................................... 1
1.1.2 Project Need .......................................................................................................................... 1
1.1.3 Project Description ................................................................................................................ 3
1.2. Air Quality Regulatory Framework .............................................................................................. 6
1.3. Public Review Comments Related to Air Quality Conformity ..................................................... 6
Section 2. Regional Conformity ............................................................................................. 6
Section 3. Localized Impact (Hot-Spot) Conformity ................................................................ 7
3.1. PM2.5/PM10 Hot-Spot Analysis .................................................................................................. 7
3.2. Construction-Related Hot-Spot Emissions ................................................................................... 8
Appendix A. Conformity Checklist ......................................................................................... 9
Appendix B. Documentation Related to Regional Conformity ...............................................10
Appendix C. PM Interagency Consultation ...........................................................................12
List of Tables
Table 1. Project Area Attainment Status.................................................................................... 6
Table 2. 2040 AADT and Truck Percentages ............................................................................ 7
Table 3. 2040 Level of Service .................................................................................................. 8
List of Figures
Figure 1. Project Vicinity Map .................................................................................................... 2
Figure 2. Project Location Map ................................................................................................. 3
Dune Palms Road Low Water Crossing Replacement Project Air Quality Conformity Analysis i
Section 1. Introduction and Project Description
This Air Quality Conformity Analysis contains the information that is required to make a
project-level air quality conformity determination for the Dune Palms Road Low-Water Crossing
Replacement Project. This analysis has been prepared to be consistent with information
published by FHWA related to Project-Level Conformity Analysis, the Standard Environmental
Reference (SER) Air Quality Conformity Findings Checklist (included as Appendix A),
applicable U.S. EPA project-level analysis guidance, the Transportation Conformity Regulations
at 40 CFR 93 Subpart A, and Section 176(c) of the Federal Clean Air Act (42 USC 7506(c)).
This analysis only addresses the conformity requirements of the Federal Clean Air Act. It does
not address general air quality analysis or studies conducted for the National Environmental
Policy Act (NEPA) or the California Environmental Quality Act (CEQA), and only addresses
pollutants for which the project area is designated nonattainment, or attainment with an approved
Maintenance SIP, by the U.S. EPA.
This report is intended to provide all information needed by FHWA to make a project-level
conformity determination for a project that falls under 23 USC 327 NEPA Assignment to
Caltrans; or to support a full project-level conformity determination by Caltrans under 23 CFR
326 NEPA Assignment for projects that require a project-level conformity determination
(including regionally significant projects as defined in 40 CFR 93.101), and are categorically
excluded from NEPA analysis under 23 CFR 771.117(c)(22) or 23 CFR 771.117(c)(23).
1.1. Project Description
1.1.1 Project Purpose
The purpose of the project is to replace the existing low-water crossing spanning the Coachella
Valley Storm Water Channel (CVSC) at Dune Palms Road with an all-weather access. The
proposed improvements will accomplish the following in the project area:
• Provide safe access across the CVSC (Whitewater River) during all-weather events
• Provide reliable route for emergency vehicles, motorists, pedestrians, and bicyclists
• Achieve the City’s General Plan goals for the corridor
1.1.2 Project Need
Dune Palms Road serves a vital access for emergency services within the project area, as well as
for La Quinta High, John Glenn Middle and Amelia Earhart Elementary Schools. It also provides
connectivity of the city residential development north of the Channel with the Highway 111
commercial corridor located south of the CVSC (Figure 1 and Figure 2).
Dune Palms Road Low Water Crossing Replacement Project Air Quality Conformity Analysis 1
Figure 1. Project Vicinity Map
Dune Palms Road Low Water Crossing Replacement Project Air Quality Conformity Analysis 2
Figure 2. Project Location Map
The CVSC conveys storm water runoff from the surrounding mountains as well as developed
areas within the Coachella Valley. The elevation of the existing Dune Palms Road low-water
crossing causes it to flood during minor rain events (2-year frequency) and results in full street
closure and detour of both vehicle and pedestrian traffic. In the interest of public health and
safety, and in response to community concerns regarding frequent closures of the low-water
crossing, the City of La Quinta has determined that replacement of the low-water crossing with a
new bridge is needed to ensure that all-weather access is maintained. The Dune Palms Road
low-water crossing is the last remaining low-water crossing of the CVSC within the City.
1.1.3 Project Description
Existing Conditions
The existing roadway crosses the CVSC at the channel grade. The roadway width is 68 feet at
the crossing, and consists of one northbound and two southbound through lanes, eight foot wide
walkway area along the western edge, and an eight foot shoulder along the eastern edge of the
road; and no median. The existing roadway approach south of the crossing consists of one
northbound and two southbound through lanes. The northern roadway approach consists of one
Dune Palms Road Low Water Crossing Replacement Project Air Quality Conformity Analysis 3
through lane in each direction. The transition from one to two lanes in the southbound direction
occurs at the midpoint of the channel crossing. Dune Palms Road approximately one-quarter
mile north of the channel low-water crossing and just south of the project limits is a four lane
roadway with a median. The roadway section just north of the crossing will be widened as part of
an approved City project (City Project Number 2009-04 per the City’s current CIP). The City
widening project was originally approved with a Mitigated Negative Declaration under CEQA in
April 2010.
Proposed Improvements
The project proposes to remove the existing low-water crossing of Dune Palms Road at the
CVSC in the City of La Quinta, Riverside County. The crossing will be replaced with a 480 feet
long and 86 feet wide four-span bridge. The bridge typical section consists of six-foot sidewalk
on both sides of the bridge, two (2) eight-foot outside shoulders also serving as bike/golf cart
lanes, a 10 foot raised median, two (2) eleven-foot travel lanes, and two (2) twelve-foot travel
lanes.
The proposed configuration will be consistent with the existing four lane roadway section to the
south, and the City’s current improvement project to the north (City Project Number 2009-04),
which will widen Dune Palms Road from two to four lanes with a median and left turn lanes.
The proposed improvements will include reconstruction of the north and south bridge approaches
to accommodate the significant raised profile of the roadway. In order to match the roadway
section on the south side of the bridge, the project’s construction limits will be extended to just
north of Highway 111. On the north side of the bridge, the project construction limits will be
extended to include a vacant lot immediately north of the project limits. The vacant lot is owned
by the City and will be offered by the City in the bidding documents to be used for storage and
construction staging by the contractor for the construction of this project.
As a part of the bridge construction, concrete slope protection will be installed along the north
side of the channel. Additionally, minor removal and replacement of slope protection will be
required on the south side of channel west of the proposed bridge and extension of slope
protection approximately 300 feet downstream of the proposed bridge. The slope protection is
needed for scour countermeasures. As a result of the proposed cast-in-place drilled shaft bridge
construction, scour protection within the bottom of the channel should not be required.
The project will also include the following additional improvements:
Dune Palms Road Low Water Crossing Replacement Project Air Quality Conformity Analysis 4
• Railing Architectural treatment. The bridge design will incorporate railing
architectural treatment as required by the City’s standard design.
• Integration of a regional Bike/Pedestrian/NEV corridor (CV Link). The Coachella
Valley Association of Governments (CVAG) and the communities within the
Coachella Valley are working together on the implementation of a regional
Bike/Pedestrian/NEV corridor (CV Link) along Whitewater River and Coachella
Valley Storm Water Channel. The project design will be consistent with these plans
by allowing for the integration of a trail under crossing within the southern slope
protection, which also includes a trail connector to the pedestrian and bike facilities
proposed along Dune Palms Road in the project area.
• Utility Relocation. The project will also require utility relocations for overhead
electrical distribution lines (Imperial Irrigation District facility), adjustment to both
water valve can and lids and the manhole covers, minor 12” ductile iron pipe water
main relocations at each bridge abutment, and relocation of both a 12” and 18”
sewer line at the northern bridge abutment.
Right-of-Way Requirements
The project will require right-of-way acquisition on the northeast and southeast corners of the
proposed bridge. The existing development at the northeast corner of the proposed bridge
consists of a Mobile Home Park with one single family home. Some of the mobile homes
adjacent to the Dune Palms Road are encroaching within the street right of way. The project may
require the acquisition of the single-family residence and relocation of two mobile homes
residents. The project will be designed to avoid and minimize relocation impacts of the mobile
homes. At the southeast corner of the crossing, the existing parcel is currently an undeveloped
commercial parcel. Acquisition for the vacant parcel will consist of a strip acquisition parallel
with Dune Palms Road.
Temporary Construction Bypass
The existing roadway will be modified to construct a temporary bypass road. The temporary
bypass will allow for staged construction of the bridge, and maintaining vehicle and pedestrian
access at all times. Temporary and short term access impact may occur during construction, and
will require coordination with property owners, the public, and other stakeholders.
Dune Palms Road Low Water Crossing Replacement Project Air Quality Conformity Analysis 5
1.2. Air Quality Regulatory Framework
Table 1 shows that the proposed project is located in an area that is nonattainment for ozone and
particulate matter (PM10). This analysis focuses on these criteria pollutant(s). The conformity
process does not address pollutants for which the area is attainment/unclassified, mobile source
air toxics, other toxic air contaminants or hazardous air pollutants, or greenhouse gases.
Table 1. Project Area Attainment Status
Criteria Pollutant Federal Attainment Status
Ozone (O3) Nonattainment (Severe)
Nitrogen Dioxide (NO2) Unclassified/Attainment
Carbon Monoxide (CO) Unclassified/Attainment
Particulate Matter (PM10) Nonattainment (Serious)
Particulate Matter (PM2.5) Unclassified/Attainment
The project is located in the Coachella Valley, which is in the Salton Sea Air Basin (SSAB)
portion of the South Coast Air Quality Management District (SCAQMD). The Coachella Valley
is classified as a severe nonattainment area for O3 and a serious nonattainment area for PM10.
1.3. Public Review Comments Related to Air Quality Conformity
Circulation for public comment was not required because the NEPA determination for this
project is a Categorical Exclusion.
Section 2. Regional Conformity
The Dune Palms Low Water Crossing Replacement Project was included in the regional
emissions analysis conducted by the Southern California Association of Governments (SCAG)
for the conforming 2012-2035 Regional Transportation Plan/Sustainable Communities Strategy.
The project’s design concept and scope have not changed significantly from what was analyzed
in the regional emission analysis. This analysis found that the plan, which takes into account
regionally significant projects and financial constraint, will conform to the state implementation
plan(s) (SIP(s)) for attaining and maintaining the National Ambient Air Quality Standards
(NAAQS) as provided in Section 176(c) of the Clean Air Act. FHWA determined that the RTP
conforms to the SIP on June 4, 2012, that Amendment #1 to the RTP conforms to the SIP on July
15, 2013, and that Amendment #2 to the RTP conforms to the SIP on December 15, 2014.
Additional documentation related to the regional emissions analysis is contained in Appendix B.
The Dune Palms Low Water Crossing Replacement Project is also included in the SCAG 2015
Federal Transportation Improvement Program (FTIP)1. The project’s open-to-traffic year is
1 Available at http://ftip.scag.ca.gov/
Dune Palms Road Low Water Crossing Replacement Project Air Quality Conformity Analysis 6
consistent with (within the same regional emission analysis period as) the construction
completion date identified in the federal TIP and RTP. The federal TIP gives priority to eligible
Transportation Control Measures (TCMs) identified in the SIP and provides sufficient funds to
provide for their implementation. FHWA determined that the TIP conforms to the SIP on
December 15, 2014. Documentation related to the public and interagency consultation process
conducted to develop the TIP is contained in Appendix B.
Section 3. Localized Impact (Hot-Spot) Conformity
3.1. PM2.5/PM10 Hot-Spot Analysis
The proposed project is not considered a project of air quality concern for PM10 and/or PM2.5
(POAQC) because it does not meet the definition of a POAQC as defined in U.S. EPA’s
Transportation Conformity Guidance.
The project is not a new or expanded highway project with a significant number of or significant
increase in diesel vehicles (U.S. EPA’s Transportation Conformity Guidance defines significant
as greater than 125,000 Annual Average Daily Traffic (AADT) and 8% or more of such AADT
is diesel truck traffic, or in practice 10,000 truck AADT or more regardless of total AADT;
significant increase is defined in practice as a 10% increase in heavy duty truck traffic). As
shown in Table 2, total 2040 AADT on this segment of Dune Palms Road is 16,500, with 3.6%
trucks and a truck AADT of 594. This is far below the EPA thresholds; furthermore, the project
does not increase diesel vehicles, as the truck AADT and percentages do not change from No
Build to Build Conditions.
Table 2. 2040 AADT and Truck Percentages
Segment
2040 No Build 2040 Build
AADT
Total
AADT
Trucks Truck % AADT
Total
AADT
Trucks Truck %
Dune Palms Road
(between Hwy 111 and
Blackhawk Way/Westward
Ho Drive)
16,500 594 3.6% 16,500 594 3.6%
The project does not affect intersections that are at a Level of Service D, E, F, with a significant
number of diesel vehicles, or that that will change to Level of Service D, E, or F because of
increased traffic volumes from a significant number of diesel vehicles related to the project. As
shown in Table 2, the project does not have a significant number of diesel vehicles, nor does it
increase the number of diesel vehicles. Furthermore, as shown in Table 3, the project does not
affect LOS at the intersections in the project area, when Build conditions are compared to No
Build Conditions. Furthermore, the project does not affect delay at intersections in the project
area.
Dune Palms Road Low Water Crossing Replacement Project Air Quality Conformity Analysis 7
Table 3. 2040 Level of Service
Intersection
2040 No Build 2040 Build
AM Peak Hour PM Peak Hour AM Peak Hour PM Peak Hour
Delay LOS Delay LOS Delay LOS Delay LOS
Dune Palms Road and
Blackhawk Way/Westward
Ho Drive
32.2 C 40.7 D 32.2 C 40.7 D
Dune Palms Road and
Highway 111 32.5 C 46.1 D 32.5 C 46.1 D
The project does not involve new or expanded bus and rail terminals and transfer points that have
a significant number of or increase in diesel vehicles congregating at a single location.
As such, PM hot-spot analysis is not required. The project underwent Interagency Consultation
(IAC) on April 28, 2015, and it was agreed upon by the IAC that the project is not a POAQC 2
(See Appendix C).
Following the October 2015 update of traffic analyses for the project, this decision was
reaffirmed at the IAC meeting on October 27, 2015.
3.2. Construction-Related Hot-Spot Emissions
40 CFR 93.123(c)(5) states that: “CO, PM10 , and PM2.5 hot-spot analyses are not required to
consider construction-related activities which cause temporary increases in emissions. Each site
which is affected by construction-related activities shall be considered separately, using
established ‘Guideline’ methods. Temporary increases are defined as those which occur only
during the construction phase and last five years or less at any individual site.”
Because construction of the project is expected to last less than five years, construction-related
emissions related to it are not considered in the project-level or regional conformity analysis.
2 Available at http://www.scag.ca.gov/programs/Pages/ProjectLevel.aspx
Dune Palms Road Low Water Crossing Replacement Project Air Quality Conformity Analysis 8
Appendix A. Conformity Checklist
Dune Palms Road Low Water Crossing Replacement Project Air Quality Conformity Analysis 9
Appendix B. Documentation Related to Regional
Conformity
Regional Emissions Analysis Conducted for Conforming RTP
The regional emissions analysis found that regional emissions will not exceed the SIP’s emission
budgets for mobile sources in the build year, a horizon year at least 20 years from when
conformity analysis started, and additional years meeting conformity regulation requirements for
periodic analysis. The regional emissions analysis was based on the latest population and
employment projections for Riverside County that were adopted by the Southern California
Association of Governments (SCAG) at the time the conformity analysis was started on April 4,
2012. These assumptions are less than five years old. The modeling was conducted using current
and future population, employment, traffic, and congestion estimates. The traffic data, including
the fleet mix data, were based on the most recently available vehicle registration data included in
the EMFAC model. EMFAC2007 was used, which was the most recent version of the model
developed by the California Air Resources Board and approved for use in California by the U.S.
EPA at the time of the analysis.
Public and Interagency Consultation Process for TIP
The federal TIP was developed in accordance with SCAG policies for community input and
interagency consultation procedures. These procedures ensure that the public has adequate
opportunity to be informed of the federal TIP development process and encourages public
participation and comment.
In the SCAG region, interagency consultation and public participation are facilitated by the
Southern California Transportation Conformity Working Group, which is a collaborative group
of federal, state, regional, and local transportation and air quality stakeholders. The group meets
on a monthly basis to facilitate an inclusive air quality planning process and to fulfill the
interagency consultation requirements of the Federal Transportation Conformity Rule. The group
helps resolve regional issues pertaining to transportation conformity and coordinates with and
supports the quarterly meetings of the Statewide Transportation Conformity Working Group.
On April 3, 2014, SCAG’s Regional Council adopted SCAG’s 2014 Public Participation Plan 3.
The adopted plan describes SCAG’s responsibilities, goals and strategies for engaging the
broadest and most diverse audiences possible and outlines opportunities for SCAG to increase
3 Available at http://www.scag.ca.gov/participate/Pages/PublicParticipationPlan.aspx
Dune Palms Road Low Water Crossing Replacement Project Air Quality Conformity Analysis 10
public awareness and diversity in participation, while expanding the range of voices and views in
developing regional plans. The public involvement process provides for:
• Early and continuing public involvement opportunities throughout the transportation
planning and programming process;
• Timely information about transportation issues and processes to citizens, affected public
agencies, representatives of transportation agency employees, private providers of
transportation, other interested parties and segments of the community affected by the
transportation improvement program’s projects;
• Reasonable public access to technical and policy information used in the development of
the transportation improvement program;
• Adequate public notice of public involvement activities and time for public review and
comment at key decision points including, but not limited to, action on the transportation
improvement program;
• A process for demonstrating explicit consideration and response to public input during the
transportation improvement program development process;
• A process for seeking out and considering the needs of those traditionally under-served by
existing transportation systems, such as low-income and minority households which may
face challenges accessing employment and other amenities; and,
• A comment period of at least thirty days and two formal public hearings prior to adoption
of the transportation improvement program.
RTP and FTIP Listings
The following pages contain the RTP and FTIP listings for the project.
Dune Palms Road Low Water Crossing Replacement Project Air Quality Conformity Analysis 11
Model List through 2012–2035 RTP/SCS Amendment No. 2September 11, 2014RTP IDLead AgencySystemCountyRoadway Segment:DescriptionDescriptionBaselineRoadway Segment:Route NameRoadway Segment:LengthRoadway Segment:FromRoadway Segment:ToRoadway Segment:Existing LanesRoadway Segment:Proposed LanesTransit Segment:RouteAdditional DetailsBegin PMEnd PMComple-tion YearToFromRoute NameRoute #FTIP IDModel SegmentRiverside3A07057RIV151217Local Highway0IN EASTERN RIVERSIDE COUNTY IN THE CITY OF COACHELLA - WIDENING OF AVENUE 48 FROM 2 TO 6 LANES (1 LN EA DIR TO 3 LNS EA DIR) FROM JACKSON RD TO VAN BUREN ST INCLUDING TRAFFIC SIGNAL MODIFICATIONS, STREET LIGHTING, DRAINAGE IMPROVEMENTS INCLUDING SIDEWALK 2016COACHELLA0062VAN BUREN STREETJACKSON ROAD5280 FTAVENUE 48WIDEN AVENUE 48 FROM 2 LANES TO 6 LANES (1 LN EA DIR TO 3 LN EA DIR) FROM JACKSON RD TO VAN BUREN STRiversideRIV110825RIV110825Local Highway0IN THE CITY OF COACHELLA - AVE 50 OVER COACHELLA STORMWATER CHANNEL: REPLACEMENT OF A 2-LN LOW WATER X-ING (BRIDGE NO. 00L0055) WITH A 6-LN (3-LNS IN EA DIR) BRIDGE FROM 300-FT W/O APACHE TRAIL TO SR-86S INTERSECTION. OTHER IMPROVEMENTS INCLUDE BIKE LANE2020COACHELLA0062SR86S Intersection300-ft west of Apache Trail1200 ftAve. 50Widen roadway approaches from 2 ln to 6 ln with a new 6 ln bridge over the Coachella Stormwater ChannelRiverside3A07031RIV151001Local Highway0IN EASTERN RIVERSIDE COUNTY FOR THE CITY OF INDIO - RECONSTRUCT AND IMPROVE HIGHWAY 111 FROM 760 FT WEST OF MADISON ST TO RUBIDOUX ST INCLUDING UPDATING ALL TRAFFIC SIGNALS AND UPDATE ALL SIDEWALKS, RAMPS AND DRIVEWAYS TO CURRENT ADA STANDARDS. WIDEN OF H2016INDIO0032Rubidoux Street760 Ft west of Madison Street6300 ftHighway 1112 lanes in each direction to 3 lanes in each directionRiverside3A07137RIV111202Local Highway0IN THE CITY OF INDIO - AVE 44 BRIDGE REPLACEMENT: REPLACE EXISTING AVENUE 44 TWO LANE LOW WATER CROSSING OVER THE COACHELLA VALLEY STORMWATER CHANNEL WITH A FOUR LANE BRIDGE (BRIDGE NO. 00L0056), INCLUDING 6 FT SIDEWALK ON EACH SIDE OF THE BRIDGE.2020INDIO0042Over the Coachella Valley Stormwater Channelover the Coachella Valley Stormwater Channel1,263 ftAvenue 44Widening of Ave 44 over Coachella Valley SD Channel from 2 to 4 lns; bridge length = 515', westerly abutment = 413' and easterly abutment = 335'Riverside3A07061RIV121202Local Highway0IN EASTERN RIVERSIDE COUNTY IN THE CITY OF LA QUINTA - ON DUNE PALMS RD: REPLACE 3-LANE LOW WATER CROSSING WITH 4 LANE BRIDGE OVER THE COACHELLA VALLEY STORMWATER CHANNEL ( WHITEWATER RIVER - BRIDGE NO.00L0070)2020LA QUINTA0043Bridge at White Water ChannelBridge at White Water Channel0Dune Palms RdWiden Bridge from 3 to 4 lanesRiverside3A04WT198RIV111203Local Highway0IN LAKE ELSINORE - TEMESCAL CANYON RD BRIDGE REPLACEMENT/WIDENING: REPLACE TEMESCAL CANYON RD. 2 LANE BRIDGE WITH A 4 LANE BRIDGE OVER TEMESCAL WASH, 0.22 MI. W/O LAKE STREET (BRIDGE NO. 56C0050).2020LAKE ELSINORE00420.22 miles W/O Lake St.Temescal Canyon Rd over Temescal Wash2,245 ft.Temescal Canyon Rd.Replace/Widen Temescal Canyon Rd. 2-ln bridge with a 4-ln bridge (2 lns in ea dir) - 2,245 ft length includes approachesRiverside3A07100RIV110124Local Highway0IN THE COACHELLA VALLEY IN THE CITY OF PALM SPRINGS - RAMON RD. WIDENING BETWEEN SAN LUIS REY DR & LANDAU BLVD.: WIDENING OF RAMON RD. FROM A 4-LN ARTERIAL TO A 6-LN ARTERIAL (3-LNS IN EA DIR) BETWEEN SAN LUIS REY DR & LANDAU BLVD., INCLUDING THE WIDENIN2020PALM SPRINGS0064310' E/O RAMON RD. BRIDGE TO LANDAU BLVD.200' W/O RAMON RD. BRIDGE1,654'RAMON RD.WIDENING FROM 4 TO 6 LANES - 3 lns in each directionRiverside3A07100RIV110124Local Highway0IN THE COACHELLA VALLEY IN THE CITY OF PALM SPRINGS - RAMON RD. WIDENING BETWEEN SAN LUIS REY DR & LANDAU BLVD.: WIDENING OF RAMON RD. FROM A 4-LN ARTERIAL TO A 6-LN ARTERIAL (3-LNS IN EA DIR) BETWEEN SAN LUIS REY DR & LANDAU BLVD., INCLUDING THE WIDENIN2020PALM SPRINGS0065200' W/O Ramon Rd. BridgeSan Luis Rey Dr. 2,314 ft.Ramon Rd.Add 1 WB lane from Crossley to San Luis Rey Dr., and one WB ln & one EB ln btwn 200 W/O Ramon Rd. Bridge to Crossley Rd.Riverside3A07100RIV110124Local Highway0IN THE COACHELLA VALLEY IN THE CITY OF PALM SPRINGS - RAMON RD. WIDENING BETWEEN SAN LUIS REY DR & LANDAU BLVD.: WIDENING OF RAMON RD. FROM A 4-LN ARTERIAL TO A 6-LN ARTERIAL (3-LNS IN EA DIR) BETWEEN SAN LUIS REY DR & LANDAU BLVD., INCLUDING THE WIDENIN2020PALM SPRINGS0065Avenida La Paloma310' E/O Landau Blvd., 640'Ramon Rd.Add one WB through lane RiversideREG0704RIV090402Local Highway0IN PALM SPRINGS – RDWAY, DRAIN., VEH. PARKING & APPURTENANT STRUCTURES & FAC. FOR THE AGUA CALIENTE MUSEUM (SE CORNER OF TAHQUITZ CNYN WY & HERMOSA DR). IMP INC: WIDEN HERMOSA DR. (TAHQUITZ CYN WY-ARENAS RD (NON-CAP)) TO PROVIDE OFFSITE BAY PARK. STALLS);2014PALM SPRINGS002n/aBaristo Rd.Arenas Rd.600'Hermosa Dr.Construct/extend Hermosa Dr. ( 2 lns - 1 in ea dir) btwn Arenas Rd. and Baristo Rd.Riverside3A01WT159RIV121204Local Highway0IN WESTERN RIVERSIDE COUNTY IN THE CITY OF NORCO - ON HAMNER AVE OVER SANTA ANA RIVER .5 MILES N/O OF SIXTH STREET, REPLACE 2 LANE BRIDGE WITH A 6 LANE BRIDGE (BRIDGE NO.56C0446).2030RIVERSIDE COUNTY0062Bridge over Santa Ana RiverBridge over Santa Ana River0Hamner AveWiden Bridge from 2 to 6 lanesRiverside3A04CV027RIV121203Local Highway0IN EASTERN RIVERSIDE COUNTY IN THE COACHELLA VALLEY - ON AVE 56/AIRPORT DR, REPLACE 2 LANE BRIDGE WITH A 4 LANE BRIDGE OVER WHITEWATER RIVER .21 MILES E/O HWY 111 (BRIDGE NO.56C0020).2023RIVERSIDE COUNTY0042Bridge over Whitewater RiverBridge over Whitewater River0Ave.56/Airport BoulevardWiden bridge from 2 to 4 lanesPage 83 of 198
Appendix C. PM Interagency Consultation
The project underwent Interagency Consultation (IAC) on April 28, 2015, and it was agreed
upon by the IAC that the project is not a POAQC. The official decision is available on the
SCAG website at http://www.scag.ca.gov/programs/Pages/ProjectLevel.aspx. A screenshot is
provided below (project is identified as RIV121202 April 2015).
Dune Palms Road Low Water Crossing Replacement Project Air Quality Conformity Analysis 12
Following the October 2015 update of traffic analyses for the project, this decision was
reaffirmed at the IAC meeting on October 27, 2015. A screenshot of that decision is provided
below.
The following pages contain the PM Hot Spot Interagency Review Form that was submitted to
the IAC in April 2015, as well as the updated PM Hot Spot Interagency Form (in tracked
changes) that was submitted to the IAC in October 2015.
Dune Palms Road Low Water Crossing Replacement Project Air Quality Conformity Analysis 13