Agenda packet — Coachella City Council, January 28, 2026 (part 6 of 11)

Item 33.

Initial Study/Mitigated Negative Declaration
City of Coachella Calhoun Street Housing Development/TTM 39051 November 2025 Initial Study/Mitigated Negative Declaration 111
storage capacity of 10.5 MG (million gallons). The distribution network includes 120 miles of pipeline with pipe diameters of 4 inches to 36 inches.

Currently, the CWA mainly serves the area west of Grapefruit Boulevard and smaller industrial/commercial corridor north of Avenue 48, while the largely agricultural land to the east is served by the Coachella Canal and privately owned wells.

The 2020 Coachella Valley Regional Urban Water Management Plan forecasted a growth in water demand for the Coachella Valley through the year 2045. However, the Indio Subbasin Annual Report for water year 2023-2024 found that actual water demand within the Indio Subbasin was 50,000 acrefeet less than the forecasted demand. 68 Neither the City’s population growth nor the demand for domestic water grew at the rates that had been planned.

Wastewater Treatment
The Coachella Sanitation Division (CSD), also managed by the City, treats wastewater at its 4.5 MGD WRP located at the east end of Avenue 54. Wastewater is treated to a secondary level and discharged into the adjacent Whitewater River/Coachella Valley Stormwater Channel. During the 2023-2024 Water Year, the CSD WRP treated 3,082 af of wastewater.69 The CSD collects and treats water from residential, commercial and industrial areas. The collection system consists of 90 miles of pipeline ranging in diameters of 4 inches to 54 inches, 1,580 manholes and two pump stations. The Project would be able to connect to the existing pipeline in Calhoun Street that extends north of Avenue 50.70
Floodplain Management
The Coachella Valley lies within the Whitewater River Watershed, the regional drainage feature that extends from the slopes of Mount San Gorgonio to the Salton Sea. The Whitewater River is the main drainage feature and is fed by mountain streams along its course. In the higher elevation of the Whitewater River, water runs generally year-round, but is ephemeral in the low desert, and has been channelized at the eastern end of the Valley to control stormwater. The CVWD maintains major tributary facilities that guide floodwater into the Coachella Valley Stormwater Channel, but drainage throughout the Coachella Valley generally falls under the supervision of the local cities or the county where it occurs.

Historically the City of Coachella has not constructed extensive infrastructure to control stormwater flows. The 2021 City of Coachella Stormwater Master Plan lays out plans to identify and construct stormwater drainage infrastructure in partnership with the CVWD. Self-contained residential neighborhoods, such as the proposed Project, contain their own drainage basins which manage stormwater flows within their properties.
68 2020 Coachella Valley Regional Urban Water Management Plan, prepared by Water Systems Consulting, Inc., May 25, 2021.
69 Indio Subbasin Annual Report for Water Year 2023-2024, Table 5-10 WY 2023-2024 Wastewater Treatment, Reuse, and Disposal in the Indio Subbasin, March 2025. 70 City of Coachella 2015 Sewer System Master Plan, prepared by CDM Smith, June 2015.

Page 769 ends

Item 33.

Initial Study/Mitigated Negative Declaration
City of Coachella Calhoun Street Housing Development/TTM 39051 November 2025 Initial Study/Mitigated Negative Declaration 112
Electricity
As discussed above in Section VI, Energy, Imperial Irrigation District (IID) will provide electricity to the Project site. IID is the sixth largest electric utility in California, as measured by peak load of 1,152 megawatts in 2023 and provides power to over 163,000 customers in Imperial County, and portions of Riverside and San Diego counties.71 Electricity is purchased from various power generators and distributed along IID’s transmission corridors to customers.

Natural Gas
Natural gas is provided to the City by Southern California Gas and is used for home heating, water heating, laundry dryers and gas stoves. More than 90% of the natural gas consumed in California is sourced from Texas and New Mexico, and the SoCalGas transmission network consists of storage facilities and pipelines.

Solid Waste Management
The City contracts with Burrtec Waste and Recycling Services to provide solid waste, recycling, and green waste disposal services. Pursuant to the State’s recycling and landfill diversion regulations, Burrtec processes recyclable materials and green waste separately from solid waste. Recyclable materials will be sorted at a Burrtec MRF. Green waste may be composted or applied as alternative daily landfill cover. Solid waste will be taken to the Coachella Valley Transfer Station where it will then be transferred to the Lamb Canyon Landfill in Beaumont. Lamb Canyon Landfill has a remaining capacity of 14,540,000 cubic yards (36.64% of total capacity) with a maximum daily throughput of 5,000 cubic yards.

Communications Systems
Frontier and Spectrum provide phone, internet and cable television connectivity in the City of Coachella and facilities are currently available under Calhoun Street. Existing Spectrum cable facilities are also under Avenue 49. DIRECTV is also available in the City for television service.

Discussion of Impacts
a) Less Than Significant Impact. Surrounding residential land uses on the south and north sides of the Project have facilitated the installation of utility infrastructure throughout the surrounding vicinity.

Water and Sewer Infrastructure
Under Calhoun Street, a 12-inch water line and 8-inch sewer line extend along the entire east side of the Project site. The Project would connect to each line at the east entrance of the development, just south of the retention basin and north of the park. Another 8-inch water line would be installed under Avenue 49 from Jackson Street and enter the Project at the north entrance. The Project would not require the relocation or significant extension of water and sewer facilities.

Project Proposed Drainage System
According to the Preliminary Hydrology Report, (Appendix D) the Project would construct a selfcontained drainage system comprised of five retention basins on-site which would retain 100% of flows from a 100-year storm event. Flows that exceed this capacity will be directed to exit the Project site and flow north on Calhoun Street to Avenue 48. Then storm water would flow eastward to the 71 Imperial Irrigation District, 2024 Integrated Resource Plan, April 2024.

Page 770 ends

Item 33.

Initial Study/Mitigated Negative Declaration
City of Coachella Calhoun Street Housing Development/TTM 39051 November 2025 Initial Study/Mitigated Negative Declaration 113
MS4 storm drain inlet facility on Van Buren Street where it would flow underground for one mile and empty into the Coachella Valley Storm Channel. On-site retention of 100-year storm flows would contain the increased runoff and prevent the Project from contributing runoff that exceeds the capacity of existing City storm drainage systems.72
Electricity Infrastructure
The Imperial Irrigation District distributes power via overhead and underground transmission lines throughout the City. Along Calhoun Street, IID provides overhead transmission along the entire length of the Project’s east boundary. At the intersection of Avenue 49 and Calhoun Street, underground electricity lines also occur and extend west along Avenue 49 to Jackson Street. The Project would connect to existing electricity distribution lines and would not result in the relocation or significant extension of this service.

Telecommunications Service
As with other utility services, cable television lines occur under Calhoun Street along the east side of the Project and under Avenue 49 along the north side of the Project. Frontier facilities are available in the vicinity although the location of the infrastructure is unknown. Given the occurrence of nearby residential neighborhoods, all telecommunications services are likely in close proximity and would not require extensive relocations or extensions of utilities.

In summary, the location of the Project adjacent to existing residential neighborhoods assures that utility services are available to the site without the need to construct significant extensions or relocate infrastructure. The impacts resulting from the Project would not cause significant environmental effects. Impacts would be less than significant.
b) Less Than Significant Impact. In compliance with the 2014 Sustainable Groundwater Management Act and to forecast the water demand on the Indio Subbasin, CWA along with three other local water agencies prepared a water management framework known as the Indio Subbasin Water Management Plan (CVWMP). The most recent 2022 update (Alternative Plan Update) includes forecasted water demand calculations for current and potential future customers within the Indio Subbasin Plan Area, which includes the East Indio Subbasin. The 2022 Alternative Plan Update relies on population growth forecasts supplied by the 2020 SCAG Regional Growth Forecast, SCAG Land Use Inventories, housing and employment analyses. Additionally, the water agencies have prepared a series of Indio Subbasin Annual Reports, the most recent Report explains that the actual total water use for the 2023-2024 Water Year was lower than the forecasted water use described in the 2022 Alternative Plan Update.

To estimate the Project’s annual water demand for indoor use, a calculation was made based on an average household size of 4.19 people in the City of Coachella.73 Using the California State standard for indoor residential water use of 47 gpcd, the Project’s 257 dwelling units would consume approximately 56.71 afy for indoor uses.74
72 SW Corner – Calhoun Street at 49th Avenue Subdivision, Coachella, CA, Preliminary Hydrology Report, prepared for Pacific Coast Properties, prepared by The Altum Group, January 17, 2025. 73 E-5 Population and Housing Estimates for Cities, Counties, and the State, 2020-2024, California Department of Finance, released May 1, 2025.
74 Standards for Indoor Residential Water Use, California Water Code §10609.4(a).

Page 771 ends

Item 33.

Initial Study/Mitigated Negative Declaration
City of Coachella Calhoun Street Housing Development/TTM 39051 November 2025 Initial Study/Mitigated Negative Declaration 114
Calculations for the outdoor water use are based on outdoor irrigation factors provided by CVWD Landscape Ordinance §3.15.75 The average yard size for each dwelling unit is estimated to be 250 sf. The common landscaped areas and retention basins would be xeriscaped with drought-tolerant plants while the park would contain grass and native, drought- tolerant trees and bushes. The total estimated outdoor use for the Project is 23.83 afy. Annually, the Project is expected to demand approximately 80.54 af, which would increase the most recently reported Indio Subbasin annual urban use extraction by 0.036%. Table XIX-1 below provides details regarding estimated indoor and outdoor water demand upon buildout of the Project.

Table XIX-1
Project Water Demand
Land Use:

Single-Family
Residential
No. of
Dwelling
Units (DU)6
Estimated
Occupants
per Home
Gallons
per Day
(gpd) per
Occupant2
gpd/DU
Project
Daily Water
Demand
(gpd)
Project
Annual Water
Demand
acre-feet/year
(af/y)
HH Indoor
Water Use 257 4.191 472 197 50,629 56.71 af/y
HH Outdoor
Water Use3 257 14.52 3,732.48 4.18 af/y
Landscaping
(Common
Areas acreage)
303,533 sf 17,540.65 19.65 af/y
TOTAL 80.54 af/y
2023-2024 Indio Subbasin Urban Water Use 224,479 af
Project’s Percentage of 2023-2024 Indio Subbasin Water Use 0.036%

1. California Department of Finance, Table E-5, City/County Population and Housing Estimates, 1/1/2025.

2. CA Indoor Residential Water Use Standards, 2025-2030.

3. 250 sf per DU, City of Coachella Code of Ordinances §17.14.030.

4. Common open space includes: the park (minus parking lot), retention basins, decorative landscaped areas.

5. Outdoor water demand calculations based on CVWD Evapotranspiration (ETo), Evapotranspiration Adjustment Factor (ETAF), and Conversion Factor (CVWD Landscape Ordinance §3.15, Appendices C and D). Each residence has 250 sf of open space = 64,250 sf. Common open space = 303,533 sf.

6. DU = Dwelling Unit, HH = Household
According to the Indio Subbasin Annual Report for the Water Year 2023-2024, the total amount of groundwater extractions amounted to 267,495 af. Of this total amount, the urban water use sector accounted for 224,479 af.76 The impacts of the region’s increased urban water use through the year 2045 on the Indio Subbasin were accounted for in the 2022 Alternative Plan Update. The Project’s water demand for both indoor and outdoor uses and would account for 0.036% of the groundwater extraction for urban uses. To comply with the regional Sustainable Groundwater Management Plan, the Project would comply with the City’s water resource conservation policies outlined the General Plan and install drought tolerant landscaping and low water-use appliances.77 Domestic water 75 Chapter 3.15 Landscape and Irrigation System Design Criteria, CVWD Ordinance Code, updated 2024. 76 Indio Subbasin Annual Report for Water Year 2023-2024, Table 4-1 WY 2023-2024 Groundwater Extractions by Water Use Sector in the Indio Subbasin, March 2025. 77 City of Coachella General Plan Update 2023, Sustainability and Natural Environment Element, Goal 3, Water Resources, April 2015.

Page 772 ends

Item 33.

Initial Study/Mitigated Negative Declaration
City of Coachella Calhoun Street Housing Development/TTM 39051 November 2025 Initial Study/Mitigated Negative Declaration 115
demand by the Project would cause an incremental increase in local water demand resulting in impacts that would be less than significant, because the Project has been accounted for in water planning, since it is consistent with the General Plan land use assigned to the property. c) Less Than Significant Impact. The Coachella WRP has a daily capacity of 4.5 million gallons, which equates to 5040.65 afy. During 2023-2024, the CSD WRP treated a total of 3,082 af of wastewater, which was 1,958.65 af under the annual capacity. Based on this recent actual wastewater demand, the Project’s anticipated wastewater demand would increase the CSD’s current demand by 1.63%. The Project’s wastewater demand would account for 1.0% of the CSD’s total annual capacity. Table XIX-2 provides a summary of the Project’s estimated wastewater demand compared to the most recent treatment data for the CSD WRP. The Calhoun Street Housing Development would provide 257 single-family for the City and contribute an incremental increase to the City’s wastewater demand, particularly given that the CSD does not treat wastewater at full capacity. Impacts would be less than significant.

Table XIX-2
Project Wastewater Generation
Land Use:

Single-Family
Residential
No. of
Dwelling
Units (DU)
Estimated
Occupants
per Home1
Gallons
per Day
(gpd) per
Occupant1
gpd/DU
Project Daily
Wastewater
Flow (gpd)
Project
Annual
Wastewater
acre-feet/year
(af/y)
Wastewater
Flow 257 4.19 42.3 177.2 45,540 51
Total 2023-2024 Acre-Feet Treated at CSD WRP 3,082 af
Project’s Percentage of 2023-2024 CSD WRP 1.65%

1.Between 60% and 90% of potable water may be sent to wastewater treatment. This estimate is based on 90%.

2.CSD 2023-2024 Water Year wastewater demand = 3082 af.

3.CSD total annual wastewater capacity – 5040.65 af.
d, e) Less than Significant Impact. As described above, Burrtec Waste and Recycling Services provides solid waste, recycling, and green waste disposal services to the City of Coachella. Burrtec processes recyclable materials and green waste separately from solid waste and helps the City achieve the mandatory 50% diversion rate. Recyclable materials would be sorted at a Burrtec MRF.

Green waste may be composted or applied as alternative daily landfill cover. The remaining solid waste would be delivered to the Coachella Valley Transfer Station where it will then be transferred to the Lamb Canyon Landfill in Beaumont. Lamb Canyon Landfill has a remaining capacity of 14,540,000 cubic yards (36.64% of total capacity) with a maximum daily throughput of 5,000 cubic yards. See Table XIX-3 for a summary of the Project’s impacts on the local landfill.

Page 773 ends

Item 33.

Initial Study/Mitigated Negative Declaration
City of Coachella Calhoun Street Housing Development/TTM 39051 November 2025 Initial Study/Mitigated Negative Declaration 116
Table XIX-3
Project Estimated Solid Waste Generation
Land Use Generation Rate Proposed Development Daily Total (lbs)
Annual Total
(US tons)
Residential
Single Family

11.4 lb/dwelling
unit/day1 257 DU 2,930 534.73
With 50% solid waste diversion 1,465 267.4
Conversion to cubic yards2 9.77 c.y. 3,565.3 c.y.

Percent of landfill capacity3 0.2% of daily
throughput

0.025% of
remaining cap.

1. Estimated Solid Waste Generation Rates for Manufacturing/Warehouse (May 1997), CalRecycle, accessed April 2025, https://www2.calrecycle.ca.gov/wastecharacterization/general/rates.

2. National Recycling Coalition Measurement Standards and Reporting Guidelines, 2006. Estimates that 150 pounds of uncompacted municipal solid waste material is equal to 1 cubic yard of waste.

3. Landfill daily throughput (or intake) is 5,000 cubic yards, and remaining capacity is 14,540,000 cubic yards, CalRecycle SWIS Facility/Site Activity Details,
https://www2.calrecycle.ca.gov/SolidWaste/SiteActivity/Details/2246?siteID=2368, accessed April 2025.

At buildout, the Project’s daily solid waste generation will contribute less than 1% of the Lamb Canyon daily capacity of 5,000 cubic yards, and less than 0.1% of the remaining capacity on an annual basis.

Commingled recyclable materials (e.g., paper, plastic, glass, cardboard, aluminum) will be transported to Burrtec’s material recovery facilities for recycling and reuse.

Burrtec is responsible for maintaining standards that assure that all waste is handled in a manner that meets local, state and federal standards. These requirements will assure that impacts associated with solid waste disposal remain less than significant.

Mitigation Measures: None required.

Monitoring: None required.

Sources:
2020 Coachella Valley Regional Urban Water Management Plan, prepared by Water Systems Consulting, Inc., May 25, 2021.

Chapter 3.15 Landscape and Irrigation System Design Criteria, CVWD Ordinance Code, updated 2024.

City of Coachella General Plan Update 2023, Sustainability and Natural Environment Element, Goal 3, Water Resources, April 2015.

City of Coachella 2015 Sewer System Master Plan, prepared by CDM Smith, June 2015.

Coachella Valley Water District, Landscape Ordinance §1302.5.

E-5 Population and Housing Estimates for Cities, Counties, and the State, 2020-2024, California Department of Finance, released May 1, 2024.

Page 774 ends

Item 33.

Imperial Irrigation District, 2024 Integrated Resource Plan, April 2024.

Standards for Indoor Residential Water Use, California Water Code §10609.4(a).

SW Corner – Calhoun Street at 49th Avenue Subdivision, Coachella, CA, Preliminary Hydrology Report, prepared for Pacific Coast Properties, prepared by The Altum Group, January 17, 2025.

Page 775 ends

Item 33.

Initial Study/Mitigated Negative Declaration
City of Coachella Calhoun Street Housing Development/TTM 39051 November 2025 Initial Study/Mitigated Negative Declaration 118
XX. WILDFIRE
If located in or near state responsibility
areas or lands classified as very high fire
hazard severity zones, would the project:

Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
a) Substantially impair an adopted
emergency response plan or
emergency evacuation plan?
✓
b) Due to slope, prevailing winds, and
other factors, exacerbate wildfire risks,
and thereby expose project occupants
to, pollutant concentrations from a
wildfire or the uncontrolled spread of a
wildfire?
✓
c) Require the installation or maintenance
of associated infrastructure (such as
roads, fuel breaks, emergency water
sources, power lines or other utilities)
that may exacerbate fire risk or that
may result in temporary or ongoing
impacts to the environment?
✓
d) Expose people or structures to
significant risks, including downslope
or downstream flooding or landslides,
as a result of runoff, post-fire slope
instability, or drainage changes?
✓
Environmental Setting
Wildfires are natural events that promote ecosystem regeneration, and ecosystems throughout much of the western United States including California are naturally susceptible to wildfires. In southern California, the winter rains lead to spring germination, then by the fall, the vegetation dries up as the high summer temperatures and lack of rainfall dominate the weather. Wildfire is fed by vegetative fuel load, slope and lack of precipitation. However, wildfires become hazards when they spread into human development areas, or when the built environment encroaches upon wildfire zones. Areas where wilderness and urban land uses meet are referred to as the wildland-urban interface (WUI), and these areas pose an elevated risks of fire hazards to human health and property. In particular, WUI areas near wilderness areas that have not burned for 30+ years are poised for higher risks of burning in the near future due to the buildup of vegetative fuels.

The California Department of Forestry and Fire Protection (Cal Fire) maintains the Fire Hazard Severity Zone Viewer (FHSZ Viewer), a State map of fire hazard zones that are ranked as either moderate, high, or very high. The FHSZ Viewer also shows geographic responsibility areas that are protected with either federal, state or local financial resources.

Page 776 ends

Item 33.

Initial Study/Mitigated Negative Declaration
City of Coachella Calhoun Street Housing Development/TTM 39051 November 2025 Initial Study/Mitigated Negative Declaration 119
The City of Coachella lies within the low desert ecosystem of the Colorado Desert section of the Sonoran Desert Bioregion where the fuel load is sparse, and the slope of the terrain is minimal compared to the higher elevations of the surrounding mountain ranges. The sparse desert vegetation and relatively flatter landscape greatly reduce the risk of wildfire in the City. The urban areas of the City have replaced much of the native Colorado Desert vegetation with development and landscaping while agricultural activity is the predominant condition of the southern and eastern regions of the Coachella Planning Area. Due to these conditions, the risk of wildfire in the City is extremely low. The Project site is approximately seven miles northeast from a moderate fire zone area within a state responsibility area (SRA) in the Santa Rosa Mountains.78 Discussion of Impacts
a) No Impact. The Primary Evacuation routes for the City of Coachella include Interstate 10, Avenue 48, Avenue 50, Avenue 52, Harrison Street, Highway 111/Grapefruit Boulevard, and State Route 86S. 79 The Project is on the southeast corner of Calhoun Street and Avenue 49, and Calhoun Street connects to both Avenue 48 to the north and Avenue 50 to the south. The Project also proposes to improve Avenue 49, which would grant additional access from the Project site to the primary evacuation routes. The Project does not propose to alter any of the existing evacuation routes and would not substantially impair the City’s adopted emergency evacuation and response plans. No impacts would result from the Project.
b, c) No Impact. The Project site and surrounding area are not located within a wildfire hazard severity zone, nor are they located within a WUI. The Project is over seven miles northeast from the nearest wildfire severity zone, which is rated as a moderate severity. The Project, surrounded by urban land uses, would not expose project occupants to pollutant concentrations from a wildfire or the uncontrolled spread of a wildfire. The Project would not require any installation or maintenance of wildfire emergency infrastructure. There would be no impacts. d) No Impact. The City of Coachella lies at the far southeastern end of the Coachella Valley, a low desert, low-elevation and relatively flat area within of the Colorado Desert ecoregion. The terrain mildly slopes downward toward the southeast. There is low to no risk of wildfire in the low desert region of the Coachella Valley or the City, and no risk of post-wildfire flooding, landslide, or hillside instability. The Project would not expose residents, workers or structures to such post-fire hazards.

No impacts are expected.

Mitigation Measures: None required.

Monitoring: None required.

Sources:

Fire Hazard Severity Zone Viewer, California Department of Forestry and Fire Protection Technical Background Report to the Safety Element, City of Coachella General Plan 2035 Update 78 Fire Hazard Severity Zone Viewer, California Department of Forestry and Fire Protection, accessed July 2024.
79 Technical Background Report to the Safety Element, City of Coachella General Plan 2035 Update, September 2014.

Page 777 ends

Item 33.

Initial Study/Mitigated Negative Declaration
City of Coachella Calhoun Street Housing Development/TTM 39051 November 2025 Initial Study/Mitigated Negative Declaration 120
XXI. MANDATORY FINDINGS OF SIGNIFICANCE
NOTE: If there are significant
environmental impacts which cannot be
mitigated and no feasible project
alternatives are available, then complete
the mandatory findings of significance and
attach to this initial study as an appendix.

This is the first step for starting the
environmental impact report (EIR)
process.

Does the project:

Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
Impact
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?
✓
b) 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)?
✓
c) Does the project have environmental
effects, which will cause substantial
adverse effects on human beings,
either directly or indirectly?
✓
a) Less Than Significant Impact with Mitigation Incorporated.

Biological Resources:

The Project site is not located within a CVMSHCP-designated conservation area and does not contain any wildlife corridors or biological linkage areas. However, the vegetative scrub and date palms on the Project site could potentially be used by both resident and migratory nesting birds, many of which are not special status species, but all are protected under the Migratory Bird Treaty Act (MBTA) and

Page 778 ends

Item 33.

Initial Study/Mitigated Negative Declaration
City of Coachella Calhoun Street Housing Development/TTM 39051 November 2025 Initial Study/Mitigated Negative Declaration 121
the California Fish and Game Code (FGC). Therefore, a pre-construction survey will be required to avoid impacts to nesting birds covered by the MBTA. Mitigation Measure BIO-1 provides details for conducting the nesting bird survey.

Western burrowing owls are protected under the MBTA, the US Fish and Wildlife Service as a Bird of Conservation Concern (BCC) and receives protection under the California Endangered Species Act (CESA). Neither burrowing owls nor signs of burrowing owls were observed during the site survey, however, because suitable habitat is present on the Project site, burrowing owls could potentially relocate to the Project site prior to the start of construction. Mitigation Measure BIO-2 describes the required pre-construction burrowing owl survey.

Finally, as the City is a signatory to the CVMSHCP, the Project is subject to payment of the Development Mitigation Fee to mitigate potential impacts to covered species under the CVMSHCP.

The Proposed Project will not significantly reduce fish or wildlife habitat or otherwise adversely impact a fish or wildlife species. The construction of the Project has the potential to impact nesting birds, but the mitigation measures included in this document and payment of the CVMSHCP Development Mitigation Fee will reduce those impacts to less than significant levels.

Cultural Resources
The Project site was evaluated by qualified non-Tribal and Tribal archaeologists and was found to have a low potential for resources as no surface deposits were discovered during the field survey.

However, the potential for buried resources, including Tribal resources, requires the implementation of mitigation to reduce impacts to less than significant levels. The CUL-1 Mitigation Measure requires the monitoring of earth moving activities, which will reduce these impacts. b) Less Than Significant Impact. The Project will result in less than significant impacts to the environment, apart from biological and cultural resources, and the transportation network surrounding the Project. The Project is consistent with the City’s General Plan Update land use designation assigned to the property, and would therefore not generate any greater impacts than those expected from the build out of the General Plan Update. Cumulative impacts are expected to be less than significant with the implementation of the prescribed mitigation measures. c) Less Than Significant Impact with Mitigation. The proposed Project will generally not significantly impact people. It will provide additional housing opportunities to existing and future residents, as well as a public park facility for the City. Air quality, GHG, hazardous materials and noise impacts have been determined to be less than significant in the discussions above.

Transportation
At the present time, three intersections within the Traffic Analysis study area operate at unacceptable levels of service (LOS E and F) during peak traffic hours, and the Traffic Analysis finds that traffic signals would adequately address these deficiencies. Although the Project is not contributing to these current deficiencies, traffic conditions upon build out will impact these intersections and further degrade the level of service at each intersection. Therefore, the Project will contribute its fair share towards the installation of traffic signals at these three intersections. Mitigation Measure TRA-1 provides information regarding the Fair Share Contribution.

Page 779 ends

Item 33.

Initial Study/Mitigated Negative Declaration
City of Coachella Calhoun Street Housing Development/TTM 39051 November 2025 Initial Study/Mitigated Negative Declaration 122
Along Avenue 49 and Calhoun Street, traffic will be impacted by vehicles entering and exiting the Project’s two driveways. To reduce impacts to less than significant levels, several on-site and site adjacent street improvements are recommended in Mitigation Measure TRA-2.

Page 780 ends

Item 33.

Initial Study/Mitigated Negative Declaration
City of Coachella Calhoun Street Housing Development/TTM 39051 November 2025 Initial Study/Mitigated Negative Declaration 123
CHAPTER 3: MITIGATION MONITORING & REPORTING PROGRAM
City of Coachella / Calhoun Street Housing Development
Environmental Assessment 25-02 / SCH No.

Resource
Topic
Level of
Impact
After
Mitigation
Mitigation Measures
Responsible
Party/
Monitoring
Party
Implementation Timing
Biological
Resources
Less than
Significant
BIO-1
Bird nesting season for resident birds in Southern
California occurs between February 1 and
August 31. To avoid impacts to nesting birds, all
vegetation clearing, ground disturbance, and
construction activity should be scheduled
between September 1 and January 31 if possible.

If construction occurs during the nesting season,
a certified avian biologist must conduct a preconstruction nesting bird survey (NBS) immediately prior to scheduled construction
activity. If active nests are identified, the biologist will demarcate a no-work buffer zone(s) around
the active nest(s) and check the nest site(s)
weekly until the young birds fledge and the
nest(s) become inactive. The buffer zone size
would be based on the nesting species, its
sensitivity to disturbance, nesting stage and the
expected intensity and duration of disturbance.

No ground or vegetation disturbance shall occur
within the nest site buffer zone(s) until the
qualified biologist determines that the young
have successfully fledged, and the nest is
inactive. Per CDFW recommendations, a buffer
of 500 feet shall be set for listed species and birds
of prey, and a buffer of 100 to 300 feet shall be
set for unlisted songbirds.

Project applicant,
Project biologist,
Planning
Department,
City Engineer
The Project applicant shall complete
preconstruction surveys and provide
them to the City prior to issuance of any
permit allowing ground disturbance on
the Project site. Results of the
preconstruction surveys are to be kept
on file at City Hall.

Page 781 ends

Item 33.

Initial Study/Mitigated Negative Declaration
City of Coachella Calhoun Street Housing Development/TTM 39051 November 2025 Initial Study/Mitigated Negative Declaration 124
Resource
Topic
Level of
Impact
After
Mitigation
Mitigation Measures
Responsible
Party/
Monitoring
Party
Implementation Timing
Biological
Resources
continued
Less than
Significant
BIO-2
To ensure that no burrowing owls have moved to
the Project site since the biological site survey
was conducted, avoidance surveys of the Project
site must be conducted immediately preceding
development, in compliance with the CDFW Staff
Report for Burrowing Owl (2012) protocols. The
first survey should occur 14-30 days prior to
initiating ground disturbance activities, and the
second survey should take place withing 24 hours
of ground disturbance. Should burrowing owls be
detected, CDFW shall be contacted as soon as
possible to determine the next course of action.

CDFW must grant permission to relocate
burrowing owls.

Cultural
Resources
Less than
Significant
CUL-1
Tribal Resource Discovery and Documentation
A Cultural Resources Monitoring and Discovery
Plan (Plan) will be prepared by the Project
archaeologist in collaboration with ACBCI and
provided to the City and ACBCI prior to the
issuance of grading permits for the property.

The Plan will require that a qualified
archaeological and Tribal monitor from ACBCI be
present during all ground-disturbing activities
within the Project site. Monitoring requirements
and locations should be defined along with
resource discovery protocols and guidance for
reducing or terminating site monitoring in the
Project
Archaeologist,
City Planning
Department,
City Engineer
The Project archaeologist shall
provide the City with a copy of the
Cultural Resources Monitoring and
Discovery Plan prior to the issuance
of any ground disturbing permit on
the site. The Plan will be prepared in
collaboration with ACBCI. Within 30
days following the completion of
monitoring activities, the Project
archaeologist shall provide the City
with a report of monitoring activities.

Page 782 ends

Item 33.

Initial Study/Mitigated Negative Declaration
City of Coachella Calhoun Street Housing Development/TTM 39051 November 2025 Initial Study/Mitigated Negative Declaration 125
Resource
Topic
Level of
Impact
After
Mitigation
Mitigation Measures
Responsible
Party/
Monitoring
Party
Implementation Timing
case that no artifacts are identified, or that
documentation finds that ground disturbance will
occur in soils with more potential for discovering
artifacts. Should an artifact be discovered, all
construction activity within 100 feet of the
discovery shall stop until the qualified
archaeologist can evaluate the significance of the
artifact and make a determination whether further
study is necessary. Should the artifact be found
to be significant under CEQA, an archaeological
treatment plan and further data recovery may be
required.

If the qualified archaeologist and ACBCI monitor
determine that on-site reburial is the appropriate
measure to be taken for the artifact(s) discovered
on the Project site, they will recommend a
location to the City and project proponent. That
location will be described and recorded as an
easement in favor of ACBCI on the property in
perpetuity prior to the completion of the first
house on the property. This is confidential
information, and the exact nature of this area will
not be called out on the grading plans.

Transportation Less than
Significant
TRA-1
Traffic Signal Installation
Traffic signal control will address the operational
deficiencies at three intersections that presently
experience unacceptable levels of service.

Although the Project is not currently contributing
to the deficiencies, traffic conditions upon build
Project applicant,
Project engineer,
City Engineer
The City Engineer shall approve
project improvement plans prior to
the issuance of grading permits.

Project improvements and fair share
contributions shall be completed
prior to the occupancy of any portion
of the Project.

Page 783 ends

Item 33.

Initial Study/Mitigated Negative Declaration
City of Coachella Calhoun Street Housing Development/TTM 39051 November 2025 Initial Study/Mitigated Negative Declaration 126
Resource
Topic
Level of
Impact
After
Mitigation
Mitigation Measures
Responsible
Party/
Monitoring
Party
Implementation Timing
out will impact these intersections and further
degrade the level of service at each intersection.

The Project Fair Share Contributions listed in
Table XVII-7 show the Project’s percentage of
the total traffic volume and deficiency. To reduce
the Project’s expected impacts to less than
significant levels, the Project will be responsible
for paying its share as shown in the table.

Table XVII-8
Intersection Project Fair
Share (%)
#1 Calhoun St. / Dr. Carreon Bl.
• AM Peak Hour
• PM Peak Hour

16.3%

19.9%
#3 Calhoun St. / Avenue 49
• AM Peak Hour
• PM Peak Hour

39.3%

41.7%
# 5 Jackson St. / Avenue 49 –
Odlum Dr.
• AM Peak Hour
• PM Peak Hour

18.6%

19.8%
Transportation
continued
Less than
Significant
TRA-2
On-Site and Site-Adjacent Improvements
The recommendations listed here are the
minimum improvements required to
accommodate site access and maintain
acceptable peak hour operation for the Project.

Project applicant,
Project engineer,
City Engineer
The City Engineer shall approve
project improvement plans prior to
the issuance of grading permits.

Project improvements and fair share
contributions shall be completed

Page 784 ends

Item 33.

Initial Study/Mitigated Negative Declaration
City of Coachella Calhoun Street Housing Development/TTM 39051 November 2025 Initial Study/Mitigated Negative Declaration 127
Resource
Topic
Level of
Impact
After
Mitigation
Mitigation Measures
Responsible
Party/
Monitoring
Party
Implementation Timing
Installation of these improvements will ensure
that impacts related to traffic entering and
exiting the Project will be reduced to less than
significant levels.
#3 – Calhoun Street / Avenue 49
• Provide a separate northbound left turn lane.
• Modify southbound approach striping to
provide a separate southbound right turn
lane.
• Provide a shared eastbound left/thru/right
lane.
#6 – Calhoun Street / Access 1
• Provide a separate northbound left turn lane.
• Provide a shared eastbound left/thru/right
turn lane.
#7 – Avenue 49 / Access 2
• Provide a shared northbound left/right turn
lane.
• Provide a shared eastbound thru/right turn
lane.
• Provide a shared westbound left/thru lane.
prior to the occupancy of any portion
of the Project.

Tribal
Cultural
Resources
Less than
Significant
See CUL-1
Tribal Resource Discovery and Documentation
A Cultural Resources Monitoring and Discovery
Plan (Plan) will be prepared by the Project
archaeologist in collaboration with ACBCI and
provided to the City and ACBCI prior to the
issuance of grading permits for the property.

Project
Archaeologist,
City Planning
Department,
City Engineer
The Project archaeologist shall
provide the City with a copy of the
Cultural Resources Monitoring and
Discovery Plan prior to the issuance
of any ground disturbing permit on
the site. The Plan will be prepared in
collaboration with ACBCI. Within 30
days following the completion of
monitoring activities, the Project

Page 785 ends

Item 33.

Initial Study/Mitigated Negative Declaration
City of Coachella Calhoun Street Housing Development/TTM 39051 November 2025 Initial Study/Mitigated Negative Declaration 128
Resource
Topic
Level of
Impact
After
Mitigation
Mitigation Measures
Responsible
Party/
Monitoring
Party
Implementation Timing
The Plan will require that a qualified
archaeological and Tribal monitor from ACBCI be
present during all ground-disturbing activities
within the Project site. Monitoring requirements
and locations should be defined along with
resource discovery protocols and guidance for
reducing or terminating site monitoring in the
case that no artifacts are identified, or that
documentation finds that ground disturbance will
occur in soils with more potential for discovering
artifacts. Should an artifact be discovered, all
construction activity within 100 feet of the
discovery shall stop until the qualified
archaeologist can evaluate the significance of the
artifact and make a determination whether further
study is necessary. Should the artifact be found
to be significant under CEQA, an archaeological
treatment plan and further data recovery may be
required.

Page 786 ends

Item 33.

Initial Study/Mitigated Negative Declaration
City of Coachella Calhoun Street Housing Development/TTM 39051 November 2025 Initial Study/Mitigated Negative Declaration A
Appendix A
Calhoun Street Housing Development CalEEMod Report

Page 787 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 1 / 89
Calhoun Street Housing Development Detailed Report
Table of Contents

1. Basic Project Information

1.1. Basic Project Information

1.2. Land Use Types

1.3. User-Selected Emission Reduction Measures by Emissions Sector

2. Emissions Summary

2.1. Construction Emissions Compared Against Thresholds

2.2. Construction Emissions by Year, Unmitigated

2.3. Construction Emissions by Year, Mitigated

2.4. Operations Emissions Compared Against Thresholds

2.5. Operations Emissions by Sector, Unmitigated

2.6. Operations Emissions by Sector, Mitigated

3. Construction Emissions Details

3.1. Site Preparation (2026) - Unmitigated

3.2. Site Preparation (2026) - Mitigated

3.3. Grading (2026) - Unmitigated

Page 788 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 2 / 89

3.4. Grading (2026) - Mitigated

3.5. Building Construction (2026) - Unmitigated

3.6. Building Construction (2026) - Mitigated

3.7. Building Construction (2027) - Unmitigated

3.8. Building Construction (2027) - Mitigated

3.9. Building Construction (2028) - Unmitigated

3.10. Building Construction (2028) - Mitigated

3.11. Paving (2028) - Unmitigated

3.12. Paving (2028) - Mitigated

3.13. Architectural Coating (2028) - Unmitigated

3.14. Architectural Coating (2028) - Mitigated

3.15. Architectural Coating (2029) - Unmitigated

3.16. Architectural Coating (2029) - Mitigated

4. Operations Emissions Details

4.1. Mobile Emissions by Land Use

4.1.1. Unmitigated

4.1.2. Mitigated

4.2. Energy Page 789
Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 3 / 89

4.2.1. Electricity Emissions By Land Use - Unmitigated

4.2.2. Electricity Emissions By Land Use - Mitigated

4.2.3. Natural Gas Emissions By Land Use - Unmitigated

4.2.4. Natural Gas Emissions By Land Use - Mitigated

4.3. Area Emissions by Source

4.3.1. Unmitigated

4.3.2. Mitigated

4.4. Water Emissions by Land Use

4.4.1. Unmitigated

4.4.2. Mitigated

4.5. Waste Emissions by Land Use

4.5.1. Unmitigated

4.5.2. Mitigated

4.6. Refrigerant Emissions by Land Use

4.6.1. Unmitigated

4.6.2. Mitigated

4.7. Offroad Emissions By Equipment Type

4.7.1. Unmitigated Page 790
Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 4 / 89

4.7.2. Mitigated

4.8. Stationary Emissions By Equipment Type

4.8.1. Unmitigated

4.8.2. Mitigated

4.9. User Defined Emissions By Equipment Type

4.9.1. Unmitigated

4.9.2. Mitigated

4.10. Soil Carbon Accumulation By Vegetation Type

4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated

4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated

4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated

4.10.4. Soil Carbon Accumulation By Vegetation Type - Mitigated

4.10.5. Above and Belowground Carbon Accumulation by Land Use Type - Mitigated

4.10.6. Avoided and Sequestered Emissions by Species - Mitigated

5. Activity Data

5.1. Construction Schedule

5.2. Off-Road Equipment

5.2.1. Unmitigated Page 791
Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 5 / 89

5.2.2. Mitigated

5.3. Construction Vehicles

5.3.1. Unmitigated

5.3.2. Mitigated

5.4. Vehicles

5.4.1. Construction Vehicle Control Strategies

5.5. Architectural Coatings

5.6. Dust Mitigation

5.6.1. Construction Earthmoving Activities

5.6.2. Construction Earthmoving Control Strategies

5.7. Construction Paving

5.8. Construction Electricity Consumption and Emissions Factors

5.9. Operational Mobile Sources

5.9.1. Unmitigated

5.9.2. Mitigated

5.10. Operational Area Sources

5.10.1. Hearths

5.10.1.1. Unmitigated Page 792
Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 6 / 89

5.10.1.2. Mitigated

5.10.2. Architectural Coatings

5.10.3. Landscape Equipment

5.10.4. Landscape Equipment - Mitigated

5.11. Operational Energy Consumption

5.11.1. Unmitigated

5.11.2. Mitigated

5.12. Operational Water and Wastewater Consumption

5.12.1. Unmitigated

5.12.2. Mitigated

5.13. Operational Waste Generation

5.13.1. Unmitigated

5.13.2. Mitigated

5.14. Operational Refrigeration and Air Conditioning Equipment

5.14.1. Unmitigated

5.14.2. Mitigated

5.15. Operational Off-Road Equipment

5.15.1. Unmitigated Page 793
Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 7 / 89

5.15.2. Mitigated

5.16. Stationary Sources

5.16.1. Emergency Generators and Fire Pumps

5.16.2. Process Boilers

5.17. User Defined

5.18. Vegetation

5.18.1. Land Use Change

5.18.1.1. Unmitigated

5.18.1.2. Mitigated

5.18.1. Biomass Cover Type

5.18.1.1. Unmitigated

5.18.1.2. Mitigated

5.18.2. Sequestration

5.18.2.1. Unmitigated

5.18.2.2. Mitigated

6. Climate Risk Detailed Report

6.1. Climate Risk Summary

6.2. Initial Climate Risk Scores Page 794
Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 8 / 89

6.3. Adjusted Climate Risk Scores

6.4. Climate Risk Reduction Measures

7. Health and Equity Details

7.1. CalEnviroScreen 4.0 Scores

7.2. Healthy Places Index Scores

7.3. Overall Health & Equity Scores

7.4. Health & Equity Measures

7.5. Evaluation Scorecard

7.6. Health & Equity Custom Measures

8. User Changes to Default Data

Page 795 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 9 / 89

1. Basic Project Information

1.1. Basic Project Information
Data Field Value
Project Name Calhoun Street Housing Development
Construction Start Date 1/6/2026
Operational Year 2029
Lead Agency —
Land Use Scale Project/site
Analysis Level for Defaults County
Windspeed (m/s) 3.00
Precipitation (days) 7.60
Location 33.691743355835385, -116.21030862160973
County Riverside-Salton Sea
City Coachella
Air District South Coast AQMD
Air Basin Salton Sea
TAZ 5695
EDFZ 19
Electric Utility Imperial Irrigation District
Gas Utility Southern California Gas
App Version 2022.1.1.30

1.2. Land Use Types
Land Use Subtype Size Unit Lot Acreage Building Area (sq ft) Landscape Area (sq ft)
Special Landscape
Area (sq ft)
Population Description
Single Family
Housing
257 Dwelling Unit 22.4 976,050 0.00 0.00 1,058 —

Page 796 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 10 / 89
City Park 5.95 Acre 5.95 0.00 5.95 0.00 — —
User Defined
Parking

9.12 User Defined Unit 9.12 0.00 0.00 0.00 — —

1.3. User-Selected Emission Reduction Measures by Emissions Sector Sector # Measure Title
Construction C-2* Limit Heavy-Duty Diesel Vehicle Idling Construction C-11 Limit Vehicle Speeds on Unpaved Roads Energy E-2 Require Energy Efficient Appliances
Water W-5 Design Water-Efficient Landscapes
* Qualitative or supporting measure. Emission reductions not included in the mitigated emissions results.

2. Emissions Summary

2.1. Construction Emissions Compared Against Thresholds Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Un/Mit. TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 71.5 71.4 28.8 29.7 0.07 1.15 4.22 5.37 1.06 1.58 2.64 — 8,233 8,233 0.29 0.27 6.54 8,326 Mit. 71.5 71.4 28.8 29.7 0.07 1.15 4.22 5.37 1.06 1.58 2.64 — 8,233 8,233 0.29 0.27 6.54 8,326 %
Reduced
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 71.4 71.4 29.3 29.7 0.07 1.24 7.90 9.15 1.14 4.00 5.14 — 8,191 8,191 0.28 0.27 0.17 8,280 Mit. 71.4 71.4 29.3 29.7 0.07 1.24 7.90 9.15 1.14 4.00 5.14 — 8,191 8,191 0.28 0.27 0.17 8,280

Page 797 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 11 / 89
% — — — — — — — — — — — — — — — — — —
Reduced
Average
Daily
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 14.1 14.0 14.0 16.4 0.03 0.55 2.33 2.88 0.50 0.92 1.42 — 4,078 4,078 0.13 0.13 1.84 4,122 Mit. 14.1 14.0 14.0 16.4 0.03 0.55 2.33 2.88 0.50 0.92 1.42 — 4,078 4,078 0.13 0.13 1.84 4,122 %
Reduced
— — — — — — — — — — — — — — — — — —
Annual
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 2.57 2.55 2.55 3.00 0.01 0.10 0.43 0.52 0.09 0.17 0.26 — 675 675 0.02 0.02 0.30 682 Mit. 2.57 2.55 2.55 3.00 0.01 0.10 0.43 0.52 0.09 0.17 0.26 — 675 675 0.02 0.02 0.30 682 %
Reduced
— — — — — — — — — — — — — — — — — —
Exceeds
(Daily
Max)
— — — — — — — — — — — — — — — — — —
Threshol
d
— 75.0 100 550 150 — — 150 — — 55.0 — — — — — — —
Unmit. — No No No No — — No — — No — — — — — — —
Mit. — No No No No — — No — — No — — — — — — —
Exceeds
(Average
Daily)
— — — — — — — — — — — — — — — — — —
Threshol
d
— 75.0 100 550 150 — — 150 — — 55.0 — — — — — — —
Unmit. — No No No No — — No — — No — — — — — — —
Mit. — No No No No — — No — — No — — — — — — —
Exceeds
(Annual)
— — — — — — — — — — — — — — — — — —
Threshol
d
— — — — — — — — — — — — — — — — — —
Unmit. — Yes — — — — — — — — — — — — — — — —

Page 798 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 12 / 89
Mit. — Yes — — — — — — — — — — — — — — — —

2.2. Construction Emissions by Year, Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Year TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily -
Summer
(Max)
— — — — — — — — — — — — — — — — — —
2026 3.77 3.16 28.8 29.7 0.07 1.15 4.22 5.37 1.06 1.58 2.64 — 8,233 8,233 0.29 0.27 6.54 8,326 2027 1.72 1.46 10.6 20.9 0.03 0.35 1.44 1.79 0.32 0.35 0.67 — 4,550 4,550 0.12 0.17 5.95 4,611 2028 71.5 71.4 10.1 20.4 0.03 0.31 1.44 1.76 0.29 0.35 0.64 — 4,506 4,506 0.12 0.17 5.40 4,566 Daily -
Winter
(Max)
— — — — — — — — — — — — — — — — — —
2026 3.82 3.21 29.3 29.7 0.07 1.24 7.90 9.15 1.14 4.00 5.14 — 8,191 8,191 0.28 0.27 0.17 8,280 2027 1.65 1.39 10.7 17.6 0.03 0.35 1.44 1.79 0.32 0.35 0.67 — 4,355 4,355 0.12 0.17 0.15 4,410 2028 71.4 71.4 10.2 17.3 0.03 0.31 1.44 1.76 0.29 0.35 0.64 — 4,315 4,315 0.12 0.17 0.14 4,370 2029 71.4 71.4 0.87 1.87 < 0.005 0.01 0.24 0.25 0.01 0.06 0.07 — 350 350 0.01 0.01 0.02 353 Average
Daily
— — — — — — — — — — — — — — — — — —
2026 1.90 1.60 14.0 16.4 0.03 0.55 2.33 2.88 0.50 0.92 1.42 — 4,078 4,078 0.13 0.13 1.30 4,122 2027 1.19 1.01 7.62 13.4 0.02 0.25 1.03 1.28 0.23 0.25 0.48 — 3,166 3,166 0.09 0.12 1.84 3,207 2028 14.1 14.0 4.99 8.87 0.01 0.16 0.61 0.77 0.15 0.15 0.29 — 1,979 1,979 0.06 0.07 0.98 2,003 2029 3.35 3.35 0.04 0.10 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 17.1 17.1 < 0.005 < 0.005 0.01 17.3 Annual — — — — — — — — — — — — — — — — — —
2026 0.35 0.29 2.55 3.00 0.01 0.10 0.43 0.52 0.09 0.17 0.26 — 675 675 0.02 0.02 0.21 682 2027 0.22 0.18 1.39 2.44 < 0.005 0.05 0.19 0.23 0.04 0.05 0.09 — 524 524 0.01 0.02 0.30 531 2028 2.57 2.55 0.91 1.62 < 0.005 0.03 0.11 0.14 0.03 0.03 0.05 — 328 328 0.01 0.01 0.16 332 2029 0.61 0.61 0.01 0.02 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 2.84 2.84 < 0.005 < 0.005 < 0.005 2.86

Page 799 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 13 / 89

2.3. Construction Emissions by Year, Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Year TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily -
Summer
(Max)
— — — — — — — — — — — — — — — — — —
2026 3.77 3.16 28.8 29.7 0.07 1.15 4.22 5.37 1.06 1.58 2.64 — 8,233 8,233 0.29 0.27 6.54 8,326 2027 1.72 1.46 10.6 20.9 0.03 0.35 1.44 1.79 0.32 0.35 0.67 — 4,550 4,550 0.12 0.17 5.95 4,611 2028 71.5 71.4 10.1 20.4 0.03 0.31 1.44 1.76 0.29 0.35 0.64 — 4,506 4,506 0.12 0.17 5.40 4,566 Daily -
Winter
(Max)
— — — — — — — — — — — — — — — — — —
2026 3.82 3.21 29.3 29.7 0.07 1.24 7.90 9.15 1.14 4.00 5.14 — 8,191 8,191 0.28 0.27 0.17 8,280 2027 1.65 1.39 10.7 17.6 0.03 0.35 1.44 1.79 0.32 0.35 0.67 — 4,355 4,355 0.12 0.17 0.15 4,410 2028 71.4 71.4 10.2 17.3 0.03 0.31 1.44 1.76 0.29 0.35 0.64 — 4,315 4,315 0.12 0.17 0.14 4,370 2029 71.4 71.4 0.87 1.87 < 0.005 0.01 0.24 0.25 0.01 0.06 0.07 — 350 350 0.01 0.01 0.02 353 Average
Daily
— — — — — — — — — — — — — — — — — —
2026 1.90 1.60 14.0 16.4 0.03 0.55 2.33 2.88 0.50 0.92 1.42 — 4,078 4,078 0.13 0.13 1.30 4,122 2027 1.19 1.01 7.62 13.4 0.02 0.25 1.03 1.28 0.23 0.25 0.48 — 3,166 3,166 0.09 0.12 1.84 3,207 2028 14.1 14.0 4.99 8.87 0.01 0.16 0.61 0.77 0.15 0.15 0.29 — 1,979 1,979 0.06 0.07 0.98 2,003 2029 3.35 3.35 0.04 0.10 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 17.1 17.1 < 0.005 < 0.005 0.01 17.3 Annual — — — — — — — — — — — — — — — — — —
2026 0.35 0.29 2.55 3.00 0.01 0.10 0.43 0.52 0.09 0.17 0.26 — 675 675 0.02 0.02 0.21 682 2027 0.22 0.18 1.39 2.44 < 0.005 0.05 0.19 0.23 0.04 0.05 0.09 — 524 524 0.01 0.02 0.30 531 2028 2.57 2.55 0.91 1.62 < 0.005 0.03 0.11 0.14 0.03 0.03 0.05 — 328 328 0.01 0.01 0.16 332 2029 0.61 0.61 0.01 0.02 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 2.84 2.84 < 0.005 < 0.005 < 0.005 2.86

2.4. Operations Emissions Compared Against Thresholds

Page 800 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 14 / 89
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Un/Mit. TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 33.0 32.4 4.64 67.0 0.10 0.23 9.85 10.1 0.23 2.48 2.71 632 14,599 15,232 60.4 0.39 25.9 16,882 Mit. 33.0 32.4 4.64 67.0 0.10 0.23 9.85 10.1 0.23 2.48 2.71 632 14,520 15,152 60.4 0.39 25.9 16,802 %
Reduced
— — — — — — — — — — — — 1% 1% < 0.5% — — < 0.5%
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 30.1 29.5 4.70 40.5 0.09 0.22 9.85 10.1 0.22 2.48 2.70 632 13,251 13,883 60.4 0.40 7.48 15,520 Mit. 30.1 29.5 4.70 40.5 0.09 0.22 9.85 10.1 0.22 2.48 2.70 632 13,172 13,804 60.4 0.40 7.48 15,440 %
Reduced
— — — — — — — — — — — — 1% 1% < 0.5% — — 1%
Average
Daily
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 31.1 30.6 4.62 50.5 0.09 0.23 9.80 10.0 0.22 2.47 2.69 632 13,785 14,417 60.4 0.39 15.1 16,057 Mit. 31.1 30.6 4.62 50.5 0.09 0.23 9.80 10.0 0.22 2.47 2.69 632 13,706 14,338 60.4 0.39 15.1 15,978 %
Reduced
— — — — — — — — — — — — 1% 1% < 0.5% — — < 0.5%
Annual
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 5.68 5.58 0.84 9.21 0.02 0.04 1.79 1.83 0.04 0.45 0.49 105 2,282 2,387 10.00 0.06 2.51 2,658 Mit. 5.68 5.58 0.84 9.21 0.02 0.04 1.79 1.83 0.04 0.45 0.49 105 2,269 2,374 10.00 0.06 2.51 2,645 %
Reduced
— — — — — — — — — — — — 1% 1% < 0.5% < 0.5% — < 0.5%
Exceeds
(Daily
Max)
— — — — — — — — — — — — — — — — — —
Threshol
d
— 55.0 55.0 550 150 — — 150 — — 55.0 — — — — — — — Page 801 Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 15 / 89
Unmit. — No No No No — — No — — No — — — — — — —
Mit. — No No No No — — No — — No — — — — — — —
Exceeds
(Average
Daily)
— — — — — — — — — — — — — — — — — —
Threshol
d
— 55.0 55.0 550 150 — — 150 — — 55.0 — — — — — — —
Unmit. — No No No No — — No — — No — — — — — — —
Mit. — No No No No — — No — — No — — — — — — —
Exceeds
(Annual)
— — — — — — — — — — — — — — — — — —
Threshol
d
— — — — — — — — — — — — — — — — — 3,000
Unmit. — Yes — — — — — — — — — — — — — — — No
Mit. — Yes — — — — — — — — — — — — — — — No

2.5. Operations Emissions by Sector, Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Sector TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Mobile 8.80 8.38 2.20 51.4 0.08 0.04 9.85 9.89 0.03 2.48 2.52 — 8,494 8,494 0.46 0.27 18.9 8,604 Area 23.9 23.8 0.14 14.6 < 0.005 0.01 — 0.01 0.01 — 0.01 0.00 39.0 39.0 < 0.005 < 0.005 — 39.1 Energy 0.27 0.14 2.31 0.98 0.01 0.19 — 0.19 0.19 — 0.19 — 5,931 5,931 0.48 0.03 — 5,953 Water — — — — — — — — — — — 38.8 135 174 0.14 0.09 — 203 Waste — — — — — — — — — — — 593 0.00 593 59.3 0.00 — 2,076 Refrig. — — — — — — — — — — — — — — — — 6.99 6.99
Total 33.0 32.4 4.64 67.0 0.10 0.23 9.85 10.1 0.23 2.48 2.71 632 14,599 15,232 60.4 0.39 25.9 16,882

Page 802 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 16 / 89
Daily, — — — — — — — — — — — — — — — — — —
Winter
(Max)
Mobile 7.25 6.82 2.39 39.5 0.07 0.04 9.85 9.89 0.03 2.48 2.52 — 7,184 7,184 0.50 0.28 0.49 7,281 Area 22.6 22.6 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 Energy 0.27 0.14 2.31 0.98 0.01 0.19 — 0.19 0.19 — 0.19 — 5,931 5,931 0.48 0.03 — 5,953 Water — — — — — — — — — — — 38.8 135 174 0.14 0.09 — 203 Waste — — — — — — — — — — — 593 0.00 593 59.3 0.00 — 2,076 Refrig. — — — — — — — — — — — — — — — — 6.99 6.99
Total 30.1 29.5 4.70 40.5 0.09 0.22 9.85 10.1 0.22 2.48 2.70 632 13,251 13,883 60.4 0.40 7.48 15,520 Average
Daily
— — — — — — — — — — — — — — — — — —
Mobile 7.63 7.22 2.25 42.3 0.08 0.04 9.80 9.84 0.03 2.47 2.50 — 7,700 7,700 0.47 0.27 8.15 7,800 Area 23.2 23.2 0.07 7.21 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 0.00 19.2 19.2 < 0.005 < 0.005 — 19.3 Energy 0.27 0.14 2.31 0.98 0.01 0.19 — 0.19 0.19 — 0.19 — 5,931 5,931 0.48 0.03 — 5,953 Water — — — — — — — — — — — 38.8 135 174 0.14 0.09 — 203 Waste — — — — — — — — — — — 593 0.00 593 59.3 0.00 — 2,076 Refrig. — — — — — — — — — — — — — — — — 6.99 6.99
Total 31.1 30.6 4.62 50.5 0.09 0.23 9.80 10.0 0.22 2.47 2.69 632 13,785 14,417 60.4 0.39 15.1 16,057 Annual — — — — — — — — — — — — — — — — — —
Mobile 1.39 1.32 0.41 7.72 0.01 0.01 1.79 1.80 0.01 0.45 0.46 — 1,275 1,275 0.08 0.04 1.35 1,291 Area 4.24 4.23 0.01 1.32 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 0.00 3.18 3.18 < 0.005 < 0.005 — 3.19 Energy 0.05 0.02 0.42 0.18 < 0.005 0.03 — 0.03 0.03 — 0.03 — 982 982 0.08 0.01 — 986 Water — — — — — — — — — — — 6.42 22.4 28.8 0.02 0.01 — 33.6 Waste — — — — — — — — — — — 98.2 0.00 98.2 9.82 0.00 — 344 Refrig. — — — — — — — — — — — — — — — — 1.16 1.16
Total 5.68 5.58 0.84 9.21 0.02 0.04 1.79 1.83 0.04 0.45 0.49 105 2,282 2,387 10.00 0.06 2.51 2,658

2.6. Operations Emissions by Sector, Mitigated

Page 803 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 17 / 89
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Sector TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Mobile 8.80 8.38 2.20 51.4 0.08 0.04 9.85 9.89 0.03 2.48 2.52 — 8,494 8,494 0.46 0.27 18.9 8,604 Area 23.9 23.8 0.14 14.6 < 0.005 0.01 — 0.01 0.01 — 0.01 0.00 39.0 39.0 < 0.005 < 0.005 — 39.1 Energy 0.27 0.14 2.31 0.98 0.01 0.19 — 0.19 0.19 — 0.19 — 5,852 5,852 0.47 0.03 — 5,873 Water — — — — — — — — — — — 38.8 135 174 0.14 0.09 — 203 Waste — — — — — — — — — — — 593 0.00 593 59.3 0.00 — 2,076 Refrig. — — — — — — — — — — — — — — — — 6.99 6.99
Total 33.0 32.4 4.64 67.0 0.10 0.23 9.85 10.1 0.23 2.48 2.71 632 14,520 15,152 60.4 0.39 25.9 16,802 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Mobile 7.25 6.82 2.39 39.5 0.07 0.04 9.85 9.89 0.03 2.48 2.52 — 7,184 7,184 0.50 0.28 0.49 7,281 Area 22.6 22.6 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 Energy 0.27 0.14 2.31 0.98 0.01 0.19 — 0.19 0.19 — 0.19 — 5,852 5,852 0.47 0.03 — 5,873 Water — — — — — — — — — — — 38.8 135 174 0.14 0.09 — 203 Waste — — — — — — — — — — — 593 0.00 593 59.3 0.00 — 2,076 Refrig. — — — — — — — — — — — — — — — — 6.99 6.99
Total 30.1 29.5 4.70 40.5 0.09 0.22 9.85 10.1 0.22 2.48 2.70 632 13,172 13,804 60.4 0.40 7.48 15,440 Average
Daily
— — — — — — — — — — — — — — — — — —
Mobile 7.63 7.22 2.25 42.3 0.08 0.04 9.80 9.84 0.03 2.47 2.50 — 7,700 7,700 0.47 0.27 8.15 7,800 Area 23.2 23.2 0.07 7.21 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 0.00 19.2 19.2 < 0.005 < 0.005 — 19.3 Energy 0.27 0.14 2.31 0.98 0.01 0.19 — 0.19 0.19 — 0.19 — 5,852 5,852 0.47 0.03 — 5,873 Water — — — — — — — — — — — 38.8 135 174 0.14 0.09 — 203 Waste — — — — — — — — — — — 593 0.00 593 59.3 0.00 — 2,076 Refrig. — — — — — — — — — — — — — — — — 6.99 6.99

Page 804 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 18 / 89
Total 31.1 30.6 4.62 50.5 0.09 0.23 9.80 10.0 0.22 2.47 2.69 632 13,706 14,338 60.4 0.39 15.1 15,978 Annual — — — — — — — — — — — — — — — — — —
Mobile 1.39 1.32 0.41 7.72 0.01 0.01 1.79 1.80 0.01 0.45 0.46 — 1,275 1,275 0.08 0.04 1.35 1,291 Area 4.24 4.23 0.01 1.32 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 0.00 3.18 3.18 < 0.005 < 0.005 — 3.19 Energy 0.05 0.02 0.42 0.18 < 0.005 0.03 — 0.03 0.03 — 0.03 — 969 969 0.08 0.01 — 972 Water — — — — — — — — — — — 6.42 22.4 28.8 0.02 0.01 — 33.6 Waste — — — — — — — — — — — 98.2 0.00 98.2 9.82 0.00 — 344 Refrig. — — — — — — — — — — — — — — — — 1.16 1.16
Total 5.68 5.58 0.84 9.21 0.02 0.04 1.79 1.83 0.04 0.45 0.49 105 2,269 2,374 10.00 0.06 2.51 2,645

3. Construction Emissions Details

3.1. Site Preparation (2026) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

3.74 3.14 29.2 28.8 0.05 1.24 — 1.24 1.14 — 1.14 — 5,298 5,298 0.21 0.04 — 5,316 Dust
From
Material
Movement
— — — — — — 7.67 7.67 — 3.94 3.94 — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 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 805 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 19 / 89
Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.36 0.30 2.80 2.76 < 0.005 0.12 — 0.12 0.11 — 0.11 — 508 508 0.02 < 0.005 — 510 Dust
From
Material
Movement
— — — — — — 0.74 0.74 — 0.38 0.38 — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.07 0.06 0.51 0.50 < 0.005 0.02 — 0.02 0.02 — 0.02 — 84.1 84.1 < 0.005 < 0.005 — 84.4 Dust
From
Material
Movement
— — — — — — 0.13 0.13 — 0.07 0.07 — — — — — — —
Onsite
truck

Calhoun Street Housing Development Detailed Report, 11/4/2025 20 / 89
Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 2.98 2.98 < 0.005 < 0.005 < 0.005 3.11 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.02 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 — 3.68 3.68 < 0.005 < 0.005 0.01 3.72 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 0.49 0.49 < 0.005 < 0.005 < 0.005 0.51 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.2. Site Preparation (2026) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.36 0.30 2.80 2.76 < 0.005 0.12 — 0.12 0.11 — 0.11 — 508 508 0.02 < 0.005 — 510

Page 807 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 21 / 89
Dust — — — — — — 0.74 0.74 — 0.38 0.38 — — — — — — —
From
Material
Movement
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.07 0.07 0.09 0.88 0.00 0.00 0.23 0.23 0.00 0.05 0.05 — 217 217 < 0.005 0.01 0.02 219 Vendor < 0.005 < 0.005 0.03 0.01 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 31.1 31.1 < 0.005 < 0.005 < 0.005 32.4 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.01 0.11 0.00 0.00 0.02 0.02 0.00 0.01 0.01 — 22.2 22.2 < 0.005 < 0.005 0.03 22.5 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 2.98 2.98 < 0.005 < 0.005 < 0.005 3.11 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.02 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 — 3.68 3.68 < 0.005 < 0.005 0.01 3.72

Page 808 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 22 / 89
Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 0.49 0.49 < 0.005 < 0.005 < 0.005 0.51 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.3. Grading (2026) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

3.62 3.04 27.2 27.6 0.06 1.12 — 1.12 1.03 — 1.03 — 6,599 6,599 0.27 0.05 — 6,621 Dust
From
Material
Movement
— — — — — — 3.59 3.59 — 1.43 1.43 — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —

Page 809 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 23 / 89
Off-Roa
Equipment

0.99 0.83 7.46 7.55 0.02 0.31 — 0.31 0.28 — 0.28 — 1,808 1,808 0.07 0.01 — 1,814 Dust
From
Material
Movement
— — — — — — 0.98 0.98 — 0.39 0.39 — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.18 0.15 1.36 1.38 < 0.005 0.06 — 0.06 0.05 — 0.05 — 299 299 0.01 < 0.005 — 300 Dust
From
Material
Movement
— — — — — — 0.18 0.18 — 0.07 0.07 — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.10 0.09 0.10 1.77 0.00 0.00 0.26 0.26 0.00 0.06 0.06 — 291 291 0.01 0.01 0.93 295 Vendor < 0.005 < 0.005 0.03 0.01 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 31.1 31.1 < 0.005 < 0.005 0.08 32.4 Hauling 0.04 0.03 1.46 0.34 0.01 0.03 0.36 0.38 0.03 0.09 0.12 — 1,312 1,312 0.01 0.21 2.73 1,377 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.08 0.07 0.10 1.00 0.00 0.00 0.26 0.26 0.00 0.06 0.06 — 248 248 < 0.005 0.01 0.02 251 Vendor < 0.005 < 0.005 0.03 0.01 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 31.1 31.1 < 0.005 < 0.005 < 0.005 32.4 Hauling 0.04 0.03 1.56 0.35 0.01 0.03 0.36 0.38 0.03 0.09 0.12 — 1,314 1,314 0.01 0.21 0.07 1,375 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.02 0.02 0.03 0.34 0.00 0.00 0.07 0.07 0.00 0.02 0.02 — 72.5 72.5 < 0.005 < 0.005 0.11 73.4 Page 810 Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 24 / 89
Vendor < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 8.52 8.52 < 0.005 < 0.005 0.01 8.88 Hauling 0.01 0.01 0.42 0.09 < 0.005 0.01 0.10 0.10 0.01 0.02 0.03 — 360 360 < 0.005 0.06 0.32 377 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.06 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 12.0 12.0 < 0.005 < 0.005 0.02 12.2 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 1.41 1.41 < 0.005 < 0.005 < 0.005 1.47 Hauling < 0.005 < 0.005 0.08 0.02 < 0.005 < 0.005 0.02 0.02 < 0.005 < 0.005 0.01 — 59.6 59.6 < 0.005 0.01 0.05 62.4

3.4. Grading (2026) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

3.62 3.04 27.2 27.6 0.06 1.12 — 1.12 1.03 — 1.03 — 6,599 6,599 0.27 0.05 — 6,621

Page 811 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 25 / 89
Dust — — — — — — 3.59 3.59 — 1.43 1.43 — — — — — — —
From
Material
Movement
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

Calhoun Street Housing Development Detailed Report, 11/4/2025 26 / 89
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.08 0.07 0.10 1.00 0.00 0.00 0.26 0.26 0.00 0.06 0.06 — 248 248 < 0.005 0.01 0.02 251 Vendor < 0.005 < 0.005 0.03 0.01 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 31.1 31.1 < 0.005 < 0.005 < 0.005 32.4 Hauling 0.04 0.03 1.56 0.35 0.01 0.03 0.36 0.38 0.03 0.09 0.12 — 1,314 1,314 0.01 0.21 0.07 1,375 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.02 0.02 0.03 0.34 0.00 0.00 0.07 0.07 0.00 0.02 0.02 — 72.5 72.5 < 0.005 < 0.005 0.11 73.4 Vendor < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 8.52 8.52 < 0.005 < 0.005 0.01 8.88 Hauling 0.01 0.01 0.42 0.09 < 0.005 0.01 0.10 0.10 0.01 0.02 0.03 — 360 360 < 0.005 0.06 0.32 377 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.06 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 12.0 12.0 < 0.005 < 0.005 0.02 12.2 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 1.41 1.41 < 0.005 < 0.005 < 0.005 1.47 Hauling < 0.005 < 0.005 0.08 0.02 < 0.005 < 0.005 0.02 0.02 < 0.005 < 0.005 0.01 — 59.6 59.6 < 0.005 0.01 0.05 62.4

3.5. Building Construction (2026) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

1.28 1.07 9.85 13.0 0.02 0.38 — 0.38 0.35 — 0.35 — 2,397 2,397 0.10 0.02 — 2,405 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —

Page 813 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 27 / 89
Off-Roa
Equipment

1.28 1.07 9.85 13.0 0.02 0.38 — 0.38 0.35 — 0.35 — 2,397 2,397 0.10 0.02 — 2,405 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.37 0.31 2.85 3.76 0.01 0.11 — 0.11 0.10 — 0.10 — 694 694 0.03 0.01 — 697 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.07 0.06 0.52 0.69 < 0.005 0.02 — 0.02 0.02 — 0.02 — 115 115 < 0.005 < 0.005 — 115 Onsite
truck

Page 814 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 28 / 89
Worker 0.12 0.11 0.13 1.68 0.00 0.00 0.35 0.35 0.00 0.08 0.08 — 354 354 < 0.005 0.01 0.54 359 Vendor 0.01 0.01 0.27 0.11 < 0.005 < 0.005 0.07 0.07 < 0.005 0.02 0.02 — 247 247 < 0.005 0.03 0.28 258 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker 0.02 0.02 0.02 0.31 0.00 0.00 0.06 0.06 0.00 0.01 0.01 — 58.7 58.7 < 0.005 < 0.005 0.09 59.4 Vendor < 0.005 < 0.005 0.05 0.02 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 41.0 41.0 < 0.005 0.01 0.05 42.7 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.6. Building Construction (2026) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

1.28 1.07 9.85 13.0 0.02 0.38 — 0.38 0.35 — 0.35 — 2,397 2,397 0.10 0.02 — 2,405 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

1.28 1.07 9.85 13.0 0.02 0.38 — 0.38 0.35 — 0.35 — 2,397 2,397 0.10 0.02 — 2,405 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —

Page 815 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 29 / 89
Off-Roa 0.37 0.31 2.85 3.76 0.01 0.11 — 0.11 0.10 — 0.10 — 694 694 0.03 0.01 — 697 d
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.07 0.06 0.52 0.69 < 0.005 0.02 — 0.02 0.02 — 0.02 — 115 115 < 0.005 < 0.005 — 115 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.46 0.42 0.44 8.20 0.00 0.00 1.21 1.21 0.00 0.28 0.28 — 1,345 1,345 0.05 0.05 4.30 1,364 Vendor 0.04 0.03 0.88 0.38 0.01 0.01 0.24 0.25 0.01 0.06 0.08 — 854 854 0.01 0.12 2.24 891 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.39 0.35 0.48 4.65 0.00 0.00 1.21 1.21 0.00 0.28 0.28 — 1,145 1,145 0.02 0.05 0.11 1,159 Vendor 0.04 0.03 0.95 0.39 0.01 0.01 0.24 0.25 0.01 0.06 0.08 — 854 854 0.01 0.12 0.06 890 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.12 0.11 0.13 1.68 0.00 0.00 0.35 0.35 0.00 0.08 0.08 — 354 354 < 0.005 0.01 0.54 359 Vendor 0.01 0.01 0.27 0.11 < 0.005 < 0.005 0.07 0.07 < 0.005 0.02 0.02 — 247 247 < 0.005 0.03 0.28 258 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker 0.02 0.02 0.02 0.31 0.00 0.00 0.06 0.06 0.00 0.01 0.01 — 58.7 58.7 < 0.005 < 0.005 0.09 59.4 Vendor < 0.005 < 0.005 0.05 0.02 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 41.0 41.0 < 0.005 0.01 0.05 42.7

Page 816 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 30 / 89
Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.7. Building Construction (2027) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

1.23 1.03 9.39 12.9 0.02 0.34 — 0.34 0.31 — 0.31 — 2,397 2,397 0.10 0.02 — 2,405 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

1.23 1.03 9.39 12.9 0.02 0.34 — 0.34 0.31 — 0.31 — 2,397 2,397 0.10 0.02 — 2,405 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.88 0.74 6.71 9.24 0.02 0.24 — 0.24 0.22 — 0.22 — 1,712 1,712 0.07 0.01 — 1,718 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —

Page 817 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 31 / 89
Off-Roa 0.16 0.13 1.22 1.69 < 0.005 0.04 — 0.04 0.04 — 0.04 — 283 283 0.01 < 0.005 — 284 d
Equipm
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.44 0.40 0.40 7.63 0.00 0.00 1.21 1.21 0.00 0.28 0.28 — 1,318 1,318 0.01 0.04 3.89 1,336 Vendor 0.04 0.03 0.84 0.37 0.01 0.01 0.24 0.25 0.01 0.06 0.08 — 835 835 0.01 0.11 2.07 870 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.38 0.33 0.44 4.33 0.00 0.00 1.21 1.21 0.00 0.28 0.28 — 1,123 1,123 0.02 0.04 0.10 1,136 Vendor 0.04 0.03 0.90 0.37 0.01 0.01 0.24 0.25 0.01 0.06 0.08 — 836 836 0.01 0.11 0.05 869 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.28 0.25 0.28 3.87 0.00 0.00 0.86 0.86 0.00 0.20 0.20 — 857 857 0.01 0.03 1.20 868 Vendor 0.03 0.02 0.63 0.26 < 0.005 0.01 0.17 0.18 0.01 0.05 0.06 — 596 596 0.01 0.08 0.64 621 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker 0.05 0.05 0.05 0.71 0.00 0.00 0.16 0.16 0.00 0.04 0.04 — 142 142 < 0.005 0.01 0.20 144 Vendor 0.01 < 0.005 0.11 0.05 < 0.005 < 0.005 0.03 0.03 < 0.005 0.01 0.01 — 98.7 98.7 < 0.005 0.01 0.11 103 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.8. Building Construction (2027) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E Page 818 PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 32 / 89
Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

1.23 1.03 9.39 12.9 0.02 0.34 — 0.34 0.31 — 0.31 — 2,397 2,397 0.10 0.02 — 2,405 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

1.23 1.03 9.39 12.9 0.02 0.34 — 0.34 0.31 — 0.31 — 2,397 2,397 0.10 0.02 — 2,405 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.88 0.74 6.71 9.24 0.02 0.24 — 0.24 0.22 — 0.22 — 1,712 1,712 0.07 0.01 — 1,718 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.16 0.13 1.22 1.69 < 0.005 0.04 — 0.04 0.04 — 0.04 — 283 283 0.01 < 0.005 — 284 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —

Page 819 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 33 / 89
Daily, — — — — — — — — — — — — — — — — — —
Summer
(Max)
Worker 0.44 0.40 0.40 7.63 0.00 0.00 1.21 1.21 0.00 0.28 0.28 — 1,318 1,318 0.01 0.04 3.89 1,336 Vendor 0.04 0.03 0.84 0.37 0.01 0.01 0.24 0.25 0.01 0.06 0.08 — 835 835 0.01 0.11 2.07 870 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.38 0.33 0.44 4.33 0.00 0.00 1.21 1.21 0.00 0.28 0.28 — 1,123 1,123 0.02 0.04 0.10 1,136 Vendor 0.04 0.03 0.90 0.37 0.01 0.01 0.24 0.25 0.01 0.06 0.08 — 836 836 0.01 0.11 0.05 869 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.28 0.25 0.28 3.87 0.00 0.00 0.86 0.86 0.00 0.20 0.20 — 857 857 0.01 0.03 1.20 868 Vendor 0.03 0.02 0.63 0.26 < 0.005 0.01 0.17 0.18 0.01 0.05 0.06 — 596 596 0.01 0.08 0.64 621 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker 0.05 0.05 0.05 0.71 0.00 0.00 0.16 0.16 0.00 0.04 0.04 — 142 142 < 0.005 0.01 0.20 144 Vendor 0.01 < 0.005 0.11 0.05 < 0.005 < 0.005 0.03 0.03 < 0.005 0.01 0.01 — 98.7 98.7 < 0.005 0.01 0.11 103 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.9. Building Construction (2028) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —

Page 820 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 34 / 89
Off-Roa 1.18 0.99 8.92 12.9 0.02 0.30 — 0.30 0.28 — 0.28 — 2,397 2,397 0.10 0.02 — 2,406 d
Equipm
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

1.18 0.99 8.92 12.9 0.02 0.30 — 0.30 0.28 — 0.28 — 2,397 2,397 0.10 0.02 — 2,406 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.43 0.36 3.27 4.73 0.01 0.11 — 0.11 0.10 — 0.10 — 877 877 0.04 0.01 — 880 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.08 0.07 0.60 0.86 < 0.005 0.02 — 0.02 0.02 — 0.02 — 145 145 0.01 < 0.005 — 146 Onsite
truck

Calhoun Street Housing Development Detailed Report, 11/4/2025 35 / 89
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.32 0.32 0.40 4.01 0.00 0.00 1.21 1.21 0.00 0.28 0.28 — 1,102 1,102 0.02 0.04 0.09 1,116 Vendor 0.03 0.02 0.87 0.36 0.01 0.01 0.24 0.25 0.01 0.06 0.08 — 816 816 0.01 0.11 0.05 849 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.12 0.12 0.13 1.84 0.00 0.00 0.44 0.44 0.00 0.10 0.10 — 431 431 0.01 0.02 0.55 436 Vendor 0.01 0.01 0.31 0.13 < 0.005 < 0.005 0.09 0.09 < 0.005 0.02 0.03 — 298 298 < 0.005 0.04 0.30 311 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker 0.02 0.02 0.02 0.34 0.00 0.00 0.08 0.08 0.00 0.02 0.02 — 71.3 71.3 < 0.005 < 0.005 0.09 72.2 Vendor < 0.005 < 0.005 0.06 0.02 < 0.005 < 0.005 0.02 0.02 < 0.005 < 0.005 0.01 — 49.4 49.4 < 0.005 0.01 0.05 51.4 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.10. Building Construction (2028) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

1.18 0.99 8.92 12.9 0.02 0.30 — 0.30 0.28 — 0.28 — 2,397 2,397 0.10 0.02 — 2,406 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —

Page 822 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 36 / 89
Off-Roa
Equipment

1.18 0.99 8.92 12.9 0.02 0.30 — 0.30 0.28 — 0.28 — 2,397 2,397 0.10 0.02 — 2,406 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.43 0.36 3.27 4.73 0.01 0.11 — 0.11 0.10 — 0.10 — 877 877 0.04 0.01 — 880 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.08 0.07 0.60 0.86 < 0.005 0.02 — 0.02 0.02 — 0.02 — 145 145 0.01 < 0.005 — 146 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.43 0.38 0.36 7.13 0.00 0.00 1.21 1.21 0.00 0.28 0.28 — 1,293 1,293 0.01 0.04 3.50 1,310 Vendor 0.04 0.03 0.80 0.35 0.01 0.01 0.24 0.25 0.01 0.06 0.08 — 815 815 0.01 0.11 1.91 850 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.32 0.32 0.40 4.01 0.00 0.00 1.21 1.21 0.00 0.28 0.28 — 1,102 1,102 0.02 0.04 0.09 1,116 Vendor 0.03 0.02 0.87 0.36 0.01 0.01 0.24 0.25 0.01 0.06 0.08 — 816 816 0.01 0.11 0.05 849 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —

Page 823 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 37 / 89
Worker 0.12 0.12 0.13 1.84 0.00 0.00 0.44 0.44 0.00 0.10 0.10 — 431 431 0.01 0.02 0.55 436 Vendor 0.01 0.01 0.31 0.13 < 0.005 < 0.005 0.09 0.09 < 0.005 0.02 0.03 — 298 298 < 0.005 0.04 0.30 311 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker 0.02 0.02 0.02 0.34 0.00 0.00 0.08 0.08 0.00 0.02 0.02 — 71.3 71.3 < 0.005 < 0.005 0.09 72.2 Vendor < 0.005 < 0.005 0.06 0.02 < 0.005 < 0.005 0.02 0.02 < 0.005 < 0.005 0.01 — 49.4 49.4 < 0.005 0.01 0.05 51.4 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.11. Paving (2028) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.82 0.69 6.63 9.91 0.01 0.26 — 0.26 0.24 — 0.24 — 1,511 1,511 0.06 0.01 — 1,516 Paving 0.40 0.40 — — — — — — — — — — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.13 0.11 1.09 1.63 < 0.005 0.04 — 0.04 0.04 — 0.04 — 248 248 0.01 < 0.005 — 249 Paving 0.07 0.07 — — — — — — — — — — — — — — — —

Page 824 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 38 / 89
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.02 0.02 0.20 0.30 < 0.005 0.01 — 0.01 0.01 — 0.01 — 41.1 41.1 < 0.005 < 0.005 — 41.3 Paving 0.01 0.01 — — — — — — — — — — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.07 0.06 0.06 1.16 0.00 0.00 0.20 0.20 0.00 0.05 0.05 — 210 210 < 0.005 0.01 0.57 212 Vendor 0.01 < 0.005 0.15 0.06 < 0.005 < 0.005 0.04 0.05 < 0.005 0.01 0.01 — 148 148 < 0.005 0.02 0.35 155 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.01 0.13 0.00 0.00 0.03 0.03 0.00 0.01 0.01 — 31.4 31.4 < 0.005 < 0.005 0.04 31.8 Vendor < 0.005 < 0.005 0.03 0.01 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 24.4 24.4 < 0.005 < 0.005 0.02 25.4 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.02 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 5.20 5.20 < 0.005 < 0.005 0.01 5.26 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 4.04 4.04 < 0.005 < 0.005 < 0.005 4.21 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.12. Paving (2028) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Page 825 Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 39 / 89
Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.82 0.69 6.63 9.91 0.01 0.26 — 0.26 0.24 — 0.24 — 1,511 1,511 0.06 0.01 — 1,516 Paving 0.40 0.40 — — — — — — — — — — — — — — — —
Onsite
truck

0.13 0.11 1.09 1.63 < 0.005 0.04 — 0.04 0.04 — 0.04 — 248 248 0.01 < 0.005 — 249 Paving 0.07 0.07 — — — — — — — — — — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.02 0.02 0.20 0.30 < 0.005 0.01 — 0.01 0.01 — 0.01 — 41.1 41.1 < 0.005 < 0.005 — 41.3 Paving 0.01 0.01 — — — — — — — — — — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —

Page 826 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 40 / 89
Daily, — — — — — — — — — — — — — — — — — —
Summer
(Max)
Worker 0.07 0.06 0.06 1.16 0.00 0.00 0.20 0.20 0.00 0.05 0.05 — 210 210 < 0.005 0.01 0.57 212 Vendor 0.01 < 0.005 0.15 0.06 < 0.005 < 0.005 0.04 0.05 < 0.005 0.01 0.01 — 148 148 < 0.005 0.02 0.35 155 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.01 0.13 0.00 0.00 0.03 0.03 0.00 0.01 0.01 — 31.4 31.4 < 0.005 < 0.005 0.04 31.8 Vendor < 0.005 < 0.005 0.03 0.01 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 24.4 24.4 < 0.005 < 0.005 0.02 25.4 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.02 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 5.20 5.20 < 0.005 < 0.005 0.01 5.26 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 4.04 4.04 < 0.005 < 0.005 < 0.005 4.21 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.13. Architectural Coating (2028) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.13 0.11 0.81 1.12 < 0.005 0.02 — 0.02 0.01 — 0.01 — 134 134 0.01 < 0.005 — 134

Page 827 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 41 / 89
Architect 71.2 71.2 — — — — — — — — — — — — — — — —
ural
Coating
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.13 0.11 0.81 1.12 < 0.005 0.02 — 0.02 0.01 — 0.01 — 134 134 0.01 < 0.005 — 134 Architect
ural
Coating
s

71.2 71.2 — — — — — — — — — — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.02 0.02 0.15 0.21 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 24.8 24.8 < 0.005 < 0.005 — 24.9 Architect
ural
Coating
s

13.2 13.2 — — — — — — — — — — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
< 0.005 < 0.005 0.03 0.04 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 4.11 4.11 < 0.005 < 0.005 — 4.12

Page 828 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 42 / 89
Architect 2.42 2.42 — — — — — — — — — — — — — — — —
ural
Coating
s
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.09 0.08 0.07 1.43 0.00 0.00 0.24 0.24 0.00 0.06 0.06 — 259 259 < 0.005 0.01 0.70 262 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.06 0.06 0.08 0.80 0.00 0.00 0.24 0.24 0.00 0.06 0.06 — 220 220 < 0.005 0.01 0.02 223 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.01 0.19 0.00 0.00 0.04 0.04 0.00 0.01 0.01 — 43.8 43.8 < 0.005 < 0.005 0.06 44.3 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.03 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 7.25 7.25 < 0.005 < 0.005 0.01 7.34 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.14. Architectural Coating (2028) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Page 829 Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 43 / 89
Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.13 0.11 0.81 1.12 < 0.005 0.02 — 0.02 0.01 — 0.01 — 134 134 0.01 < 0.005 — 134 Architect
ural
Coating
s

71.2 71.2 — — — — — — — — — — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.13 0.11 0.81 1.12 < 0.005 0.02 — 0.02 0.01 — 0.01 — 134 134 0.01 < 0.005 — 134 Architect
ural
Coating
s

71.2 71.2 — — — — — — — — — — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.02 0.02 0.15 0.21 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 24.8 24.8 < 0.005 < 0.005 — 24.9 Architect
ural
Coating
s

13.2 13.2 — — — — — — — — — — — — — — — —

Page 830 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 44 / 89
Onsite
truck

2.42 2.42 — — — — — — — — — — — — — — — —
Onsite
truck

Calhoun Street Housing Development Detailed Report, 11/4/2025 45 / 89
Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.15. Architectural Coating (2029) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.12 0.10 0.79 1.11 < 0.005 0.01 — 0.01 0.01 — 0.01 — 134 134 0.01 < 0.005 — 134 Architect
ural
Coating
s

71.2 71.2 — — — — — — — — — — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.01 < 0.005 0.04 0.05 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 6.27 6.27 < 0.005 < 0.005 — 6.29 Architect
ural
Coating
s

3.35 3.35 — — — — — — — — — — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 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 832 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 46 / 89
Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
< 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 1.04 1.04 < 0.005 < 0.005 — 1.04 Architect
ural
Coating
s

0.61 0.61 — — — — — — — — — — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.06 0.05 0.07 0.76 0.00 0.00 0.24 0.24 0.00 0.06 0.06 — 217 217 < 0.005 0.01 0.02 219 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.04 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 10.9 10.9 < 0.005 < 0.005 0.01 11.0 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 — 1.80 1.80 < 0.005 < 0.005 < 0.005 1.82 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.16. Architectural Coating (2029) - Mitigated

Page 833 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 47 / 89
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.12 0.10 0.79 1.11 < 0.005 0.01 — 0.01 0.01 — 0.01 — 134 134 0.01 < 0.005 — 134 Architect
ural
Coating
s

71.2 71.2 — — — — — — — — — — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent

0.01 < 0.005 0.04 0.05 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 6.27 6.27 < 0.005 < 0.005 — 6.29 Architect
ural
Coating
s

3.35 3.35 — — — — — — — — — — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Roa
d
Equipm
ent
< 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 1.04 1.04 < 0.005 < 0.005 — 1.04

Page 834 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 48 / 89
Architect 0.61 0.61 — — — — — — — — — — — — — — — —
ural
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.06 0.05 0.07 0.76 0.00 0.00 0.24 0.24 0.00 0.06 0.06 — 217 217 < 0.005 0.01 0.02 219 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.04 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 10.9 10.9 < 0.005 < 0.005 0.01 11.0 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 — 1.80 1.80 < 0.005 < 0.005 < 0.005 1.82 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

4. Operations Emissions Details

4.1. Mobile Emissions by Land Use

4.1.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)

Page 835 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 49 / 89
Land TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Use
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Single
Family
Housing

8.55 8.14 2.14 50.1 0.08 0.04 9.63 9.67 0.03 2.43 2.46 — 8,303 8,303 0.45 0.26 18.5 8,410 City
Park

0.25 0.24 0.06 1.23 < 0.005 < 0.005 0.22 0.22 < 0.005 0.06 0.06 — 191 191 0.01 0.01 0.42 194 User
Defined
Parking

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Total 8.80 8.38 2.20 51.4 0.08 0.04 9.85 9.89 0.03 2.48 2.52 — 8,494 8,494 0.46 0.27 18.9 8,604 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Single
Family
Housing

7.04 6.63 2.33 38.5 0.07 0.04 9.63 9.67 0.03 2.43 2.46 — 7,023 7,023 0.48 0.27 0.48 7,117 City
Park

0.21 0.20 0.06 0.98 < 0.005 < 0.005 0.22 0.22 < 0.005 0.06 0.06 — 162 162 0.01 0.01 0.01 164 User
Defined
Parking

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Total 7.25 6.82 2.39 39.5 0.07 0.04 9.85 9.89 0.03 2.48 2.52 — 7,184 7,184 0.50 0.28 0.49 7,281 Annual — — — — — — — — — — — — — — — — — —
Single
Family
Housing

1.35 1.28 0.40 7.53 0.01 0.01 1.75 1.76 0.01 0.44 0.45 — 1,246 1,246 0.08 0.04 1.32 1,262 City
Park

0.04 0.04 0.01 0.19 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 — 28.7 28.7 < 0.005 < 0.005 0.03 29.1 User
Defined
Parking

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Total 1.39 1.32 0.41 7.72 0.01 0.01 1.79 1.80 0.01 0.45 0.46 — 1,275 1,275 0.08 0.04 1.35 1,291 Page 836 Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 50 / 89

4.1.2. Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Single
Family
Housing

8.55 8.14 2.14 50.1 0.08 0.04 9.63 9.67 0.03 2.43 2.46 — 8,303 8,303 0.45 0.26 18.5 8,410 City
Park

0.25 0.24 0.06 1.23 < 0.005 < 0.005 0.22 0.22 < 0.005 0.06 0.06 — 191 191 0.01 0.01 0.42 194 User
Defined
Parking

7.04 6.63 2.33 38.5 0.07 0.04 9.63 9.67 0.03 2.43 2.46 — 7,023 7,023 0.48 0.27 0.48 7,117 City
Park

0.21 0.20 0.06 0.98 < 0.005 < 0.005 0.22 0.22 < 0.005 0.06 0.06 — 162 162 0.01 0.01 0.01 164 User
Defined
Parking

1.35 1.28 0.40 7.53 0.01 0.01 1.75 1.76 0.01 0.44 0.45 — 1,246 1,246 0.08 0.04 1.32 1,262 City
Park

0.04 0.04 0.01 0.19 < 0.005 < 0.005 0.04 0.04 < 0.005 0.01 0.01 — 28.7 28.7 < 0.005 < 0.005 0.03 29.1

Page 837 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 51 / 89
User 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Defined
Parking
Total 1.39 1.32 0.41 7.72 0.01 0.01 1.79 1.80 0.01 0.45 0.46 — 1,275 1,275 0.08 0.04 1.35 1,291

4.2. Energy

4.2.1. Electricity Emissions By Land Use - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Single
Family
Housing
— — — — — — — — — — — — 3,002 3,002 0.22 0.03 — 3,015
City
Park
— — — — — — — — — — — — 0.00 0.00 0.00 0.00 — 0.00
User
Defined
Parking
— — — — — — — — — — — — 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — — 3,002 3,002 0.22 0.03 — 3,015 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Single
Family
Housing
— — — — — — — — — — — — 3,002 3,002 0.22 0.03 — 3,015
City
Park
— — — — — — — — — — — — 0.00 0.00 0.00 0.00 — 0.00
User
Defined
Parking
— — — — — — — — — — — — 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — — 3,002 3,002 0.22 0.03 — 3,015 Page 838 Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 52 / 89
Annual — — — — — — — — — — — — — — — — — —
Single
Family
Housing
— — — — — — — — — — — — 497 497 0.04 < 0.005 — 499
City
Park
— — — — — — — — — — — — 0.00 0.00 0.00 0.00 — 0.00
User
Defined
Parking
— — — — — — — — — — — — 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — — 497 497 0.04 < 0.005 — 499

4.2.2. Electricity Emissions By Land Use - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Single
Family
Housing
— — — — — — — — — — — — 2,923 2,923 0.21 0.03 — 2,936
City
Park
— — — — — — — — — — — — 0.00 0.00 0.00 0.00 — 0.00
User
Defined
Parking
— — — — — — — — — — — — 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — — 2,923 2,923 0.21 0.03 — 2,936 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Single
Family
Housing
— — — — — — — — — — — — 2,923 2,923 0.21 0.03 — 2,936
City
Park
— — — — — — — — — — — — 0.00 0.00 0.00 0.00 — 0.00

Page 839 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 53 / 89
User
Defined
Parking
— — — — — — — — — — — — 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — — 2,923 2,923 0.21 0.03 — 2,936 Annual — — — — — — — — — — — — — — — — — —
Single
Family
Housing
— — — — — — — — — — — — 484 484 0.03 < 0.005 — 486
City
Park
— — — — — — — — — — — — 0.00 0.00 0.00 0.00 — 0.00
User
Defined
Parking
— — — — — — — — — — — — 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — — 484 484 0.03 < 0.005 — 486

4.2.3. Natural Gas Emissions By Land Use - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Single
Family
Housing

0.27 0.14 2.31 0.98 0.01 0.19 — 0.19 0.19 — 0.19 — 2,929 2,929 0.26 0.01 — 2,937 City
Park

0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 User
Defined
Parking

0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 Total 0.27 0.14 2.31 0.98 0.01 0.19 — 0.19 0.19 — 0.19 — 2,929 2,929 0.26 0.01 — 2,937 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —

Page 840 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 54 / 89
Single
Family
Housing

0.27 0.14 2.31 0.98 0.01 0.19 — 0.19 0.19 — 0.19 — 2,929 2,929 0.26 0.01 — 2,937 City
Park

0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 User
Defined
Parking

0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 Total 0.27 0.14 2.31 0.98 0.01 0.19 — 0.19 0.19 — 0.19 — 2,929 2,929 0.26 0.01 — 2,937 Annual — — — — — — — — — — — — — — — — — —
Single
Family
Housing

0.05 0.02 0.42 0.18 < 0.005 0.03 — 0.03 0.03 — 0.03 — 485 485 0.04 < 0.005 — 486 City
Park

0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 User
Defined
Parking

0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 Total 0.05 0.02 0.42 0.18 < 0.005 0.03 — 0.03 0.03 — 0.03 — 485 485 0.04 < 0.005 — 486

4.2.4. Natural Gas Emissions By Land Use - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Single
Family
Housing

0.27 0.14 2.31 0.98 0.01 0.19 — 0.19 0.19 — 0.19 — 2,929 2,929 0.26 0.01 — 2,937 City
Park

0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 User
Defined
Parking

0.00 0.00 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 841 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 55 / 89
Total 0.27 0.14 2.31 0.98 0.01 0.19 — 0.19 0.19 — 0.19 — 2,929 2,929 0.26 0.01 — 2,937 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Single
Family
Housing

0.27 0.14 2.31 0.98 0.01 0.19 — 0.19 0.19 — 0.19 — 2,929 2,929 0.26 0.01 — 2,937 City
Park

0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 User
Defined
Parking

0.05 0.02 0.42 0.18 < 0.005 0.03 — 0.03 0.03 — 0.03 — 485 485 0.04 < 0.005 — 486 City
Park

0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 User
Defined
Parking

0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 Total 0.05 0.02 0.42 0.18 < 0.005 0.03 — 0.03 0.03 — 0.03 — 485 485 0.04 < 0.005 — 486

4.3. Area Emissions by Source

4.3.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Source TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Hearths 0.00 0.00 0.00 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 842 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 56 / 89
Consum 20.9 20.9 — — — — — — — — — — — — — — — —
er
Architect
ural
Coating
s

1.66 1.66 — — — — — — — — — — — — — — — —
Landsca
pe
Equipm
ent

1.34 1.26 0.14 14.6 < 0.005 0.01 — 0.01 0.01 — 0.01 — 39.0 39.0 < 0.005 < 0.005 — 39.1 Total 23.9 23.8 0.14 14.6 < 0.005 0.01 — 0.01 0.01 — 0.01 0.00 39.0 39.0 < 0.005 < 0.005 — 39.1 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Hearths 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 Consum
er
Product
s

20.9 20.9 — — — — — — — — — — — — — — — —
Architect
ural
Coating
s

1.66 1.66 — — — — — — — — — — — — — — — —
Total 22.6 22.6 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 Annual — — — — — — — — — — — — — — — — — —
Hearths 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 Consum
er
Product
s

3.82 3.82 — — — — — — — — — — — — — — — —
Architect
ural
Coating
s

0.30 0.30 — — — — — — — — — — — — — — — —

Page 843 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 57 / 89
Landsca 0.12 0.11 0.01 1.32 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 3.18 3.18 < 0.005 < 0.005 — 3.19 pe
Equipm
ent
Total 4.24 4.23 0.01 1.32 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 0.00 3.18 3.18 < 0.005 < 0.005 — 3.19

4.3.2. Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Source TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Hearths 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 Consum
er
Product
s

20.9 20.9 — — — — — — — — — — — — — — — —
Architect
ural
Coating
s

1.66 1.66 — — — — — — — — — — — — — — — —
Landsca
pe
Equipm
ent

20.9 20.9 — — — — — — — — — — — — — — — —

Page 844 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 58 / 89
Architect 1.66 1.66 — — — — — — — — — — — — — — — —
ural
Coating
Total 22.6 22.6 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 Annual — — — — — — — — — — — — — — — — — —
Hearths 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 Consum
er
Product
s

3.82 3.82 — — — — — — — — — — — — — — — —
Architect
ural
Coating
s

0.30 0.30 — — — — — — — — — — — — — — — —
Landsca
pe
Equipm
ent

0.12 0.11 0.01 1.32 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 3.18 3.18 < 0.005 < 0.005 — 3.19 Total 4.24 4.23 0.01 1.32 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 0.00 3.18 3.18 < 0.005 < 0.005 — 3.19

4.4. Water Emissions by Land Use

4.4.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Single
Family
Housing
— — — — — — — — — — — 38.8 113 152 0.14 0.09 — 181
City
Park
— — — — — — — — — — — 0.00 22.1 22.1 < 0.005 < 0.005 — 22.2 Total — — — — — — — — — — — 38.8 135 174 0.14 0.09 — 203 Page 845 Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 59 / 89
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Single
Family
Housing
— — — — — — — — — — — 38.8 113 152 0.14 0.09 — 181
City
Park
— — — — — — — — — — — 0.00 22.1 22.1 < 0.005 < 0.005 — 22.2 Total — — — — — — — — — — — 38.8 135 174 0.14 0.09 — 203 Annual — — — — — — — — — — — — — — — — — —
Single
Family
Housing
— — — — — — — — — — — 6.42 18.7 25.1 0.02 0.01 — 29.9
City
Park
— — — — — — — — — — — 0.00 3.66 3.66 < 0.005 < 0.005 — 3.68 Total — — — — — — — — — — — 6.42 22.4 28.8 0.02 0.01 — 33.6

4.4.2. Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Single
Family
Housing
— — — — — — — — — — — 38.8 113 152 0.14 0.09 — 181
City
Park
— — — — — — — — — — — 0.00 22.1 22.1 < 0.005 < 0.005 — 22.2 Total — — — — — — — — — — — 38.8 135 174 0.14 0.09 — 203 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —

Page 846 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 60 / 89
Single — — — — — — — — — — — 38.8 113 152 0.14 0.09 — 181 Family
Housing
City
Park
— — — — — — — — — — — 0.00 22.1 22.1 < 0.005 < 0.005 — 22.2 Total — — — — — — — — — — — 38.8 135 174 0.14 0.09 — 203 Annual — — — — — — — — — — — — — — — — — —
Single
Family
Housing
— — — — — — — — — — — 6.42 18.7 25.1 0.02 0.01 — 29.9
City
Park
— — — — — — — — — — — 0.00 3.66 3.66 < 0.005 < 0.005 — 3.68 Total — — — — — — — — — — — 6.42 22.4 28.8 0.02 0.01 — 33.6

4.5. Waste Emissions by Land Use

4.5.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Single
Family
Housing
— — — — — — — — — — — 593 0.00 593 59.3 0.00 — 2,075
City
Park
— — — — — — — — — — — 0.28 0.00 0.28 0.03 0.00 — 0.96
User
Defined
Parking
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 593 0.00 593 59.3 0.00 — 2,076

Page 847 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 61 / 89
Daily, — — — — — — — — — — — — — — — — — —
Winter
(Max)
Single
Family
Housing
— — — — — — — — — — — 593 0.00 593 59.3 0.00 — 2,075
City
Park
— — — — — — — — — — — 0.28 0.00 0.28 0.03 0.00 — 0.96
User
Defined
Parking
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 593 0.00 593 59.3 0.00 — 2,076 Annual — — — — — — — — — — — — — — — — — —
Single
Family
Housing
— — — — — — — — — — — 98.2 0.00 98.2 9.81 0.00 — 343
City
Park
— — — — — — — — — — — 0.05 0.00 0.05 < 0.005 0.00 — 0.16 User
Defined
Parking
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 98.2 0.00 98.2 9.82 0.00 — 344

4.5.2. Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Single
Family
Housing
— — — — — — — — — — — 593 0.00 593 59.3 0.00 — 2,075
City
Park
— — — — — — — — — — — 0.28 0.00 0.28 0.03 0.00 — 0.96

Page 848 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 62 / 89
User
Defined
Parking
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 593 0.00 593 59.3 0.00 — 2,076 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Single
Family
Housing
— — — — — — — — — — — 593 0.00 593 59.3 0.00 — 2,075
City
Park
— — — — — — — — — — — 0.28 0.00 0.28 0.03 0.00 — 0.96
User
Defined
Parking
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 593 0.00 593 59.3 0.00 — 2,076 Annual — — — — — — — — — — — — — — — — — —
Single
Family
Housing
— — — — — — — — — — — 98.2 0.00 98.2 9.81 0.00 — 343
City
Park
— — — — — — — — — — — 0.05 0.00 0.05 < 0.005 0.00 — 0.16 User
Defined
Parking
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 98.2 0.00 98.2 9.82 0.00 — 344

4.6. Refrigerant Emissions by Land Use

4.6.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e

Page 849 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 63 / 89
Daily, — — — — — — — — — — — — — — — — — —
Summer
(Max)
Single
Family
Housing
— — — — — — — — — — — — — — — — 6.99 6.99
Total — — — — — — — — — — — — — — — — 6.99 6.99
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Single
Family
Housing
— — — — — — — — — — — — — — — — 6.99 6.99
Total — — — — — — — — — — — — — — — — 6.99 6.99
Annual — — — — — — — — — — — — — — — — — —
Single
Family
Housing
— — — — — — — — — — — — — — — — 1.16 1.16
Total — — — — — — — — — — — — — — — — 1.16 1.16

4.6.2. Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Single
Family
Housing
— — — — — — — — — — — — — — — — 6.99 6.99
Total — — — — — — — — — — — — — — — — 6.99 6.99
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —

Page 850 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 64 / 89
Single
Family
Housing
— — — — — — — — — — — — — — — — 6.99 6.99
Total — — — — — — — — — — — — — — — — 6.99 6.99
Annual — — — — — — — — — — — — — — — — — —
Single
Family
Housing
— — — — — — — — — — — — — — — — 1.16 1.16
Total — — — — — — — — — — — — — — — — 1.16 1.16

4.7. Offroad Emissions By Equipment Type

4.7.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipm
ent
Type
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —

4.7.2. Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipm
ent
Type
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e

Page 851 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 65 / 89
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —

4.8. Stationary Emissions By Equipment Type

4.8.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipm
ent
Type
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —

4.8.2. Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)

Page 852 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 66 / 89
Equipm TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e ent
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —

4.9. User Defined Emissions By Equipment Type

4.9.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipm
ent
Type
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —

4.9.2. Mitigated

Page 853 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 67 / 89
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipm
ent
Type
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —

4.10. Soil Carbon Accumulation By Vegetation Type

4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Vegetati
on
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —

Page 854 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 68 / 89

4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —

4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Species TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Avoided — — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Sequest
ered
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Remove
d
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —

Page 855 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 69 / 89
Daily, — — — — — — — — — — — — — — — — — —
Winter
(Max)
Avoided — — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Sequest
ered
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Remove
d
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Avoided — — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Sequest
ered
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Remove
d
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —

4.10.4. Soil Carbon Accumulation By Vegetation Type - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Vegetati
on
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —

Page 856 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 70 / 89
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —

4.10.5. Above and Belowground Carbon Accumulation by Land Use Type - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —

4.10.6. Avoided and Sequestered Emissions by Species - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Species TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Avoided — — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Sequest
ered
— — — — — — — — — — — — — — — — — — Page 857
Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 71 / 89
Subtotal — — — — — — — — — — — — — — — — — —
Remove
d
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Avoided — — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Sequest
ered
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Remove
d
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Avoided — — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Sequest
ered
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Remove
d
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —

5. Activity Data

Page 858 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 72 / 89

5.1. Construction Schedule
Phase Name Phase Type Start Date End Date Days Per Week Work Days per Phase Phase Description Site Preparation Site Preparation 1/29/2026 3/18/2026 5.00 35.0 — Grading Grading 3/19/2026 8/5/2026 5.00 100 —
Building Construction Building Construction 8/6/2026 7/5/2028 5.00 500 — Paving Paving 7/6/2028 9/27/2028 5.00 60.0 —
Architectural Coating Architectural Coating 9/28/2028 1/24/2029 5.00 85.0 —

5.2. Off-Road Equipment

5.2.1. Unmitigated
Phase Name Equipment Type Fuel Type Engine Tier Number per Day Hours Per Day Horsepower Load Factor Site Preparation Rubber Tired Dozers Diesel Average 3.00 8.00 367 0.40 Site Preparation Tractors/Loaders/Back
hoes
Diesel Average 4.00 8.00 84.0 0.37
Grading Graders Diesel Average 1.00 8.00 148 0.41
Grading Excavators Diesel Average 2.00 8.00 36.0 0.38
Grading Tractors/Loaders/Back
hoes
Diesel Average 2.00 8.00 84.0 0.37
Grading Scrapers Diesel Average 2.00 8.00 423 0.48
Grading Rubber Tired Dozers Diesel Average 1.00 8.00 367 0.40 Building Construction Forklifts Diesel Average 3.00 8.00 82.0 0.20 Building Construction Generator Sets Diesel Average 1.00 8.00 14.0 0.74 Building Construction Cranes Diesel Average 1.00 7.00 367 0.29 Building Construction Welders Diesel Average 1.00 8.00 46.0 0.45 Building Construction Tractors/Loaders/Back
hoes
Diesel Average 3.00 7.00 84.0 0.37
Paving Pavers Diesel Average 2.00 8.00 81.0 0.42
Paving Paving Equipment Diesel Average 2.00 8.00 89.0 0.36

Page 859 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 73 / 89
Paving Rollers Diesel Average 2.00 8.00 36.0 0.38
Architectural Coating Air Compressors Diesel Average 1.00 6.00 37.0 0.48

5.2.2. Mitigated
Phase Name Equipment Type Fuel Type Engine Tier Number per Day Hours Per Day Horsepower Load Factor Site Preparation Rubber Tired Dozers Diesel Average 3.00 8.00 367 0.40 Site Preparation Tractors/Loaders/Back
hoes
Diesel Average 4.00 8.00 84.0 0.37
Grading Graders Diesel Average 1.00 8.00 148 0.41
Grading Excavators Diesel Average 2.00 8.00 36.0 0.38
Grading Tractors/Loaders/Back
hoes
Diesel Average 2.00 8.00 84.0 0.37
Grading Scrapers Diesel Average 2.00 8.00 423 0.48
Grading Rubber Tired Dozers Diesel Average 1.00 8.00 367 0.40 Building Construction Forklifts Diesel Average 3.00 8.00 82.0 0.20 Building Construction Generator Sets Diesel Average 1.00 8.00 14.0 0.74 Building Construction Cranes Diesel Average 1.00 7.00 367 0.29 Building Construction Welders Diesel Average 1.00 8.00 46.0 0.45 Building Construction Tractors/Loaders/Back
hoes
Diesel Average 3.00 7.00 84.0 0.37
Paving Pavers Diesel Average 2.00 8.00 81.0 0.42
Paving Paving Equipment Diesel Average 2.00 8.00 89.0 0.36 Paving Rollers Diesel Average 2.00 8.00 36.0 0.38
Architectural Coating Air Compressors Diesel Average 1.00 6.00 37.0 0.48

5.3. Construction Vehicles

5.3.1. Unmitigated
Phase Name Trip Type One-Way Trips per Day Page 860 Miles per Trip Vehicle Mix Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 74 / 89
Site Preparation — — — —
Site Preparation Worker 17.5 18.5 LDA,LDT1,LDT2
Site Preparation Vendor 1.00 10.2 HHDT,MHDT
Site Preparation Hauling 0.00 20.0 HHDT
Site Preparation Onsite truck — — HHDT
Grading — — — —
Grading Worker 20.0 18.5 LDA,LDT1,LDT2
Grading Vendor 1.00 10.2 HHDT,MHDT
Grading Hauling 19.7 20.0 HHDT
Grading Onsite truck — — HHDT
Building Construction — — — —
Building Construction Worker 92.5 18.5 LDA,LDT1,LDT2
Building Construction Vendor 27.5 10.2 HHDT,MHDT
Building Construction Hauling 0.00 20.0 HHDT
Building Construction Onsite truck — — HHDT
Paving — — — —
Paving Worker 15.0 18.5 LDA,LDT1,LDT2
Paving Vendor 5.00 10.2 HHDT,MHDT
Paving Hauling 0.00 20.0 HHDT
Paving Onsite truck — — HHDT
Architectural Coating — — — —
Architectural Coating Worker 18.5 18.5 LDA,LDT1,LDT2
Architectural Coating Vendor — 10.2 HHDT,MHDT
Architectural Coating Hauling 0.00 20.0 HHDT
Architectural Coating Onsite truck — — HHDT

5.3.2. Mitigated
Phase Name Trip Type One-Way Trips per Day Page 861 Miles per Trip Vehicle Mix Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 75 / 89
Site Preparation————
Site Preparation Worker 17.5 18.5 LDA,LDT1,LDT2
Site Preparation Vendor 1.00 10.2 HHDT,MHDT
Site Preparation Hauling 0.00 20.0 HHDT
Site Preparation Onsite truck—— HHDT
Grading————
Grading Worker 20.0 18.5 LDA,LDT1,LDT2
Grading Vendor 1.00 10.2 HHDT,MHDT
Grading Hauling 19.7 20.0 HHDT
Grading Onsite truck—— HHDT
Building Construction————
Building Construction Worker 92.5 18.5 LDA,LDT1,LDT2
Building Construction Vendor 27.5 10.2 HHDT,MHDT
Building Construction Hauling 0.00 20.0 HHDT
Building Construction Onsite truck—— HHDT
Paving————
Paving Worker 15.0 18.5 LDA,LDT1,LDT2
Paving Vendor 5.00 10.2 HHDT,MHDT
Paving Hauling 0.00 20.0 HHDT
Paving Onsite truck—— HHDT
Architectural Coating————
Architectural Coating Worker 18.5 18.5 LDA,LDT1,LDT2
Architectural Coating Vendor— 10.2 HHDT,MHDT
Architectural Coating Hauling 0.00 20.0 HHDT
Architectural Coating Onsite truck—— HHDT

5.4. Vehicles

Page 862 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 76 / 89

5.4.1. Construction Vehicle Control Strategies
Non-applicable. No control strategies activated by user.

5.5. Architectural Coatings
Phase Name Residential Interior Area
Coated (sq ft)
Residential Exterior Area
Coated (sq ft)
Non-Residential Interior Area
Coated (sq ft)
Non-Residential Exterior Area
Coated (sq ft)
Parking Area Coated (sq ft)
Architectural Coating 1,959,188 653,063 0.00 0.00 23,403

5.6. Dust Mitigation

5.6.1. Construction Earthmoving Activities
Phase Name Material Imported (Cubic
Yards)
Material Exported (Cubic
Yards)
Acres Graded (acres) Material Demolished (sq. ft.) Acres Paved (acres) Site Preparation 0.00 0.00 30.0 0.00 —
Grading 15,749 0.00 300 0.00 —
Paving 0.00 0.00 0.00 0.00 12.0

5.6.2. Construction Earthmoving Control Strategies
Control Strategies Applied Frequency (per day) PM10 Reduction PM2.5 Reduction Water Exposed Area 2 61% 61%

5.7. Construction Paving
Land Use Area Paved (acres) % Asphalt
Single Family Housing 2.83 0%
City Park 0.00 0%
User Defined Parking 9.12 100%

5.8. Construction Electricity Consumption and Emissions Factors Page 863 Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 77 / 89
kWh per Year and Emission Factor (lb/MWh)
Year kWh per Year CO2 CH4 N2O
2026 0.00 457 0.03 < 0.005
2027 0.00 457 0.03 < 0.005
2028 0.00 457 0.03 < 0.005
2029 0.00 457 0.03 < 0.005

5.9. Operational Mobile Sources

5.9.1. Unmitigated
Land Use Type Trips/Weekday Trips/Saturday Trips/Sunday Trips/Year VMT/Weekday VMT/Saturday VMT/Sunday VMT/Year Single Family
Housing
2,424 2,424 2,424 884,581 13,899 13,899 13,899 5,073,042 City Park 75.0 75.0 75.0 27,376 315 315 315 115,007
User Defined
Parking

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

5.9.2. Mitigated
Land Use Type Trips/Weekday Trips/Saturday Trips/Sunday Trips/Year VMT/Weekday VMT/Saturday VMT/Sunday VMT/Year Single Family
Housing
2,424 2,424 2,424 884,581 13,899 13,899 13,899 5,073,042 City Park 75.0 75.0 75.0 27,376 315 315 315 115,007
User Defined
Parking

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

5.10. Operational Area Sources

5.10.1. Hearths

5.10.1.1. Unmitigated

Page 864 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 78 / 89
Hearth Type Unmitigated (number)
Single Family Housing —
Wood Fireplaces 0
Gas Fireplaces 0
Propane Fireplaces 0
Electric Fireplaces 0
No Fireplaces 100

5.10.1.2. Mitigated
Hearth Type Unmitigated (number)
Single Family Housing —
Wood Fireplaces 0
Gas Fireplaces 0
Propane Fireplaces 0
Electric Fireplaces 0
No Fireplaces 100

5.10.2. Architectural Coatings
Residential Interior Area Coated (sq
ft)
Residential Exterior Area Coated (sq
ft)
Non-Residential Interior Area Coated
(sq ft)
Non-Residential Exterior Area
Coated (sq ft)
Parking Area Coated (sq ft)
1959187.5 653,063 0.00 0.00 0.00

5.10.3. Landscape Equipment
Season Unit Value
Snow Days day/yr 0.00
Summer Days day/yr 180

Page 865 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 79 / 89

5.10.4. Landscape Equipment - Mitigated
Season Unit Value
Snow Days day/yr 0.00
Summer Days day/yr 180

5.11. Operational Energy Consumption

5.11.1. Unmitigated
Electricity (kWh/yr) and CO2 and CH4 and N2O and Natural Gas (kBTU/yr) Land Use Electricity (kWh/yr) CO2 CH4 N2O Natural Gas (kBTU/yr) Single Family Housing 2,400,186 457 0.0330 0.0040 9,140,029 City Park 0.00 457 0.0330 0.0040 0.00
User Defined Parking 0.00 457 0.0330 0.0040 0.00

5.11.2. Mitigated
Electricity (kWh/yr) and CO2 and CH4 and N2O and Natural Gas (kBTU/yr) Land Use Electricity (kWh/yr) CO2 CH4 N2O Natural Gas (kBTU/yr) Single Family Housing 2,336,876 457 0.0330 0.0040 9,140,029 City Park 0.00 457 0.0330 0.0040 0.00
User Defined Parking 0.00 457 0.0330 0.0040 0.00

5.12. Operational Water and Wastewater Consumption

5.12.1. Unmitigated
Land Use Indoor Water (gal/year) Outdoor Water (gal/year) Single Family Housing 18,153,156 1,352,281
City Park 0.00 5,493,847

Page 866 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 80 / 89

5.12.2. Mitigated
Land Use Indoor Water (gal/year) Outdoor Water (gal/year) Single Family Housing 18,153,156 1,352,281
City Park 0.00 5,493,781

5.13. Operational Waste Generation

5.13.1. Unmitigated
Land Use Waste (ton/year) Cogeneration (kWh/year)
Single Family Housing 1,100 —
City Park 0.51 —
User Defined Parking 0.00 —

5.13.2. Mitigated
Land Use Waste (ton/year) Cogeneration (kWh/year)
Single Family Housing 1,100 —
City Park 0.51 —
User Defined Parking 0.00 —

5.14. Operational Refrigeration and Air Conditioning Equipment

5.14.1. Unmitigated
Land Use Type Equipment Type Refrigerant GWP Quantity (kg) Operations Leak Rate Service Leak Rate Times Serviced Single Family Housing Average room A/C &
Other residential A/C
and heat pumps
R-410A 2,088 < 0.005 2.50 2.50 10.0
Single Family Housing Household
refrigerators and/or
freezers
R-134a 1,430 0.12 0.60 0.00 1.00

Page 867 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 81 / 89

5.14.2. Mitigated
Land Use Type Equipment Type Refrigerant GWP Quantity (kg) Operations Leak Rate Service Leak Rate Times Serviced Single Family Housing Average room A/C &
Other residential A/C
and heat pumps
R-410A 2,088 < 0.005 2.50 2.50 10.0
Single Family Housing Household
refrigerators and/or
freezers
R-134a 1,430 0.12 0.60 0.00 1.00

5.15. Operational Off-Road Equipment

5.15.1. Unmitigated
Equipment Type Fuel Type Engine Tier Number per Day Hours Per Day Horsepower Load Factor

5.15.2. Mitigated
Equipment Type Fuel Type Engine Tier Number per Day Hours Per Day Horsepower Load Factor

5.16. Stationary Sources

5.16.1. Emergency Generators and Fire Pumps
Equipment Type Fuel Type Number per Day Hours per Day Hours per Year Horsepower Load Factor

5.16.2. Process Boilers
Equipment Type Fuel Type Number Boiler Rating (MMBtu/hr) Daily Heat Input (MMBtu/day) Annual Heat Input (MMBtu/yr)

5.17. User Defined
Equipment Type Fuel Type

Page 868 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 82 / 89

5.18. Vegetation

5.18.1. Land Use Change

5.18.1.1. Unmitigated
Vegetation Land Use Type Vegetation Soil Type Initial Acres Final Acres

5.18.1.2. Mitigated
Vegetation Land Use Type Vegetation Soil Type Initial Acres Final Acres

5.18.1. Biomass Cover Type

5.18.1.1. Unmitigated
Biomass Cover Type Initial Acres Final Acres

5.18.1.2. Mitigated
Biomass Cover Type Initial Acres Final Acres

5.18.2. Sequestration

5.18.2.1. Unmitigated
Tree Type Number Electricity Saved (kWh/year) Natural Gas Saved (btu/year)

5.18.2.2. Mitigated
Tree Type Number Electricity Saved (kWh/year) Natural Gas Saved (btu/year)

Page 869 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 83 / 89

6. Climate Risk Detailed Report

6.1. Climate Risk Summary
Cal-Adapt midcentury 2040–2059 average projections for four hazards are reported below for your project location. These are under Representation Concentration Pathway (RCP) 8.5 which assumes GHG emissions will continue to rise strongly through 2050 and then plateau around 2100.

Climate Hazard Result for Project Location Unit
Temperature and Extreme Heat 22.4 annual days of extreme heat Extreme Precipitation 0.10 annual days with precipitation above 20 mm Sea Level Rise — meters of inundation depth
Wildfire 0.00 annual hectares burned
Temperature and Extreme Heat data are for grid cell in which your project are located. The projection is based on the 98th historical percentile of daily maximum/minimum temperatures from observed historical data (32 climate model ensemble from Cal-Adapt, 2040–2059 average under RCP 8.5). Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi.

Extreme Precipitation data are for the grid cell in which your project are located. The threshold of 20 mm is equivalent to about ¾ an inch of rain, which would be light to moderate rainfall if received over a full day or heavy rain if received over a period of 2 to 4 hours. Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi.

Sea Level Rise data are for the grid cell in which your project are located. The projections are from Radke et al. (2017), as reported in Cal-Adapt (Radke et al., 2017, CEC-500-2017-008), and consider inundation location and depth for the San Francisco Bay, the Sacramento-San Joaquin River Delta and California coast resulting different increments of sea level rise coupled with extreme storm events. Users may select from four scenarios to view the range in potential inundation depth for the grid cell. The four scenarios are: No rise, 0.5 meter, 1.0 meter, 1.41 meters Wildfire data are for the grid cell in which your project are located. The projections are from UC Davis, as reported in Cal-Adapt (2040–2059 average under RCP 8.5), and consider historical data of climate, vegetation, population density, and large (> 400 ha) fire history. Users may select from four model simulations to view the range in potential wildfire probabilities for the grid cell. The four simulations make different assumptions about expected rainfall and temperature are: Warmer/drier (HadGEM2-ES), Cooler/wetter (CNRM-CM5), Average conditions (CanESM2), Range of different rainfall and temperature possibilities (MIROC5). Each grid cell is 6 kilometers (km) by 6 km, or 3.7 miles (mi) by 3.7 mi.

6.2. Initial Climate Risk Scores
Climate Hazard Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score Temperature and Extreme Heat 1 0 0 N/A
Extreme Precipitation N/A N/A N/A N/A
Sea Level Rise N/A N/A N/A N/A
Wildfire N/A N/A N/A N/A
Flooding N/A N/A N/A N/A
Drought 0 0 0 N/A
Snowpack Reduction N/A N/A N/A N/A
Air Quality Degradation N/A N/A Page 870 N/A N/A
Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 84 / 89
The sensitivity score reflects the extent to which a project would be adversely affected by exposure to a climate hazard. Exposure is rated on a scale of 1 to 5, with a score of 5 representing the greatest exposure.

The adaptive capacity of a project refers to its ability to manage and reduce vulnerabilities from projected climate hazards. Adaptive capacity is rated on a scale of 1 to 5, with a score of 5 representing the greatest ability to adapt.

The overall vulnerability scores are calculated based on the potential impacts and adaptive capacity assessments for each hazard. Scores do not include implementation of climate risk reduction measures.

6.3. Adjusted Climate Risk Scores
Climate Hazard Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score Temperature and Extreme Heat 1 1 1 2
Extreme Precipitation N/A N/A N/A N/A
Sea Level Rise N/A N/A N/A N/A
Wildfire N/A N/A N/A N/A
Flooding N/A N/A N/A N/A
Drought 1 1 1 2
Snowpack Reduction N/A N/A N/A N/A
Air Quality Degradation N/A N/A N/A N/A
The sensitivity score reflects the extent to which a project would be adversely affected by exposure to a climate hazard. Exposure is rated on a scale of 1 to 5, with a score of 5 representing the greatest exposure.

The overall vulnerability scores are calculated based on the potential impacts and adaptive capacity assessments for each hazard. Scores include implementation of climate risk reduction measures.

6.4. Climate Risk Reduction Measures

7. Health and Equity Details

7.1. CalEnviroScreen 4.0 Scores
The maximum CalEnviroScreen score is 100. A high score (i.e., greater than 50) reflects a higher pollution burden compared to other census tracts in the state.

Indicator Result for Project Census Tract
Exposure Indicators —
AQ-Ozone 88.7 Page 871
Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 85 / 89
AQ-PM 9.65
AQ-DPM 36.6
Drinking Water 50.4
Lead Risk Housing 18.7
Pesticides 0.00
Toxic Releases 3.34
Traffic 10.5
Effect Indicators —
CleanUp Sites 11.8
Groundwater 0.00
Haz Waste Facilities/Generators 50.1
Impaired Water Bodies 0.00
Solid Waste 0.00
Sensitive Population —
Asthma 36.0
Cardio-vascular 46.2
Low Birth Weights 57.4
Socioeconomic Factor Indicators —
Education 80.7
Housing 79.3
Linguistic 98.8
Poverty 55.7
Unemployment 70.0

7.2. Healthy Places Index Scores
The maximum Health Places Index score is 100. A high score (i.e., greater than 50) reflects healthier community conditions compared to other census tracts in the state.

Indicator Result for Project Census Tract
Economic Page 872 —
Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 86 / 89
Above Poverty 50.68651354
Employed 83.80597973
Median HI 47.77364301
Education—
Bachelor's or higher 5.851405107
High school enrollment 100
Preschool enrollment 3.849608623
Transportation—
Auto Access 98.98626973
Active commuting 15.30861029
Social—
2-parent households 61.19594508
Voting 7.891697677
Neighborhood—
Alcohol availability 97.0101373
Park access 2.194276915
Retail density 10.94572052
Supermarket access 29.03888105
Tree canopy 4.427049917
Housing—
Homeownership 91.53086103
Housing habitability 90.19633004
Low-inc homeowner severe housing cost burden 20.18478121 Low-inc renter severe housing cost burden 97.81855511
Uncrowded housing 47.26036186
Health Outcomes—
Insured adults 27.75567817
Arthritis 88.7

Page 873 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 87 / 89
Asthma ER Admissions 63.7
High Blood Pressure 71.3
Cancer (excluding skin) 87.6
Asthma 83.3
Coronary Heart Disease 63.8
Chronic Obstructive Pulmonary Disease 81.8
Diagnosed Diabetes 51.3
Life Expectancy at Birth 33.9
Cognitively Disabled 94.6
Physically Disabled 49.3
Heart Attack ER Admissions 72.3
Mental Health Not Good 44.5
Chronic Kidney Disease 45.1
Obesity 19.9
Pedestrian Injuries 67.6
Physical Health Not Good 42.2
Stroke 80.6
Health Risk Behaviors—
Binge Drinking 4.8
Current Smoker 40.7
No Leisure Time for Physical Activity 31.1
Climate Change Exposures—
Wildfire Risk 0.0
SLR Inundation Area 0.0
Children 10.6
Elderly 98.7
English Speaking 4.3
Foreign-born 75.2

Page 874 ends

Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 88 / 89
Outdoor Workers 9.7
Climate Change Adaptive Capacity —
Impervious Surface Cover 65.7
Traffic Density 21.2
Traffic Access 23.0
Other Indices —
Hardship 70.8
Other Decision Support —
2016 Voting 17.8

7.3. Overall Health & Equity Scores
Metric Result for Project Census Tract
CalEnviroScreen 4.0 Score for Project Location (a) 31.0 Healthy Places Index Score for Project Location (b) 41.0 Project Located in a Designated Disadvantaged Community (Senate Bill 535) No Project Located in a Low-Income Community (Assembly Bill 1550) No Project Located in a Community Air Protection Program Community (Assembly Bill 617) No a: The maximum CalEnviroScreen score is 100. A high score (i.e., greater than 50) reflects a higher pollution burden compared to other census tracts in the state. b: The maximum Health Places Index score is 100. A high score (i.e., greater than 50) reflects healthier community conditions compared to other census tracts in the state.

7.4. Health & Equity Measures
No Health & Equity Measures selected.

7.5. Evaluation Scorecard
Health & Equity Evaluation Scorecard not completed.

7.6. Health & Equity Custom Measures
No Health & Equity Custom Measures created.

8. User Changes to Default Data Page 875
Item 33.

Calhoun Street Housing Development Detailed Report, 11/4/2025 89 / 89
Screen Justification
Land Use - 967,500 - Total single family home lot square footage (22.2107438 acres) - Landscaping for single family units is already included in CaleeMod, so the landscape area is zeroed out to avoid double counting it.
- Recreational City Park accounts for the Park, retention basins, and other landscaped common areas in the subdivision (259,169sf, 5.94970156).
- User Defined Parking accounts for the subdivision streets (390,047 sf) and parking area for the Park (86,775 for park - 7,200 sf parking lot approx).

Construction: Construction Phases Grading extended to 100 days. Arch Coating extended to 85 days.

No demolition phase.

Construction: Demolition No demolition phase
Construction: Dust From Material Movement There will be 15,749 cy of material imported per the grading plan.

Construction: Architectural Coatings Parking refers to streets within the subdivison. No paint will be applied.

Operations: Vehicle Data Traffic Scope estimates housing the residential units could generate up 2,404.65 trips per day (LU Code 210). If each unit generate 9.43 trips per day, the total trips = 2423.51. 2423.51 divided by 257 = 9.43
The park could generate up to 75 trips per day. Since the park was included in the acreage all landscaped areas, 75 trips is divided by 5.94970156.

Operations: Fleet Mix Passenger cars and motorcycles would be the primary vehicles used in the residential and park uses.

Operations: Hearths No wood stoves
No fireplaces
Operations: Architectural Coatings No coatings or paint applied to parking (streets).

Operations: Refrigerants Park will not contain refrigeration.

Operations: Water and Waste Water Water calculations from CVWD worksheet were input here to be consistent with the IS water use analysis.

Operations: Solid Waste Applied the CalRecycle estimated solid waste generation rate for single family home of 11.4 pounds per unit per day. 4,161.2 pounds of solid waste. Divide in half (50% diversion rate) = 2,080.5. convert to tons.

Construction: Trips and VMT Paving trips - 397,247 sf of asphalt for streets and parking lot. x .33333 foot depth of asphalt (4 inches) = 132,414.34125 cubic feet. / 27 = 4904.235 cubic yards of asphalt.
/ 16 (each truck carries 16 cy of asphalt) = 306 trucks. / 60 days in paving phase - 5.1 trips per day
Construction: Paving no off gassing from landscaped areas

Page 876 ends

Item 33.

Initial Study/Mitigated Negative Declaration
City of Coachella Calhoun Street Housing Development/TTM 39051 November 2025 Initial Study/Mitigated Negative Declaration B
Appendix B
Calhoun Street Housing Development Biological Resources Report

Page 877 ends

Item 33.

DRAFT BIOLOGICAL RESOURCES ASSESSMENT & COACHELLA VALLEY MULTIPLE

SPECIES HABITAT CONSERVATION PLAN CONSISTENCY ANALYSIS REPORT CALHOUN STREET & AVENUE 49

RESIDENTIAL DEVELOPMENT PROJECT
Assessor’s Parcel Number 612-260-010 (38.80 acres)
Coachella
Riverside County
California
Submitted to:

Terra Nova Planning and Research
42635 Melanie Place, Suite 101
Palm Springs, CA 92211
Contact: Kimberly Cuza
(760) 341-4800, E-mail: [email protected]
Submitted by:

WSP USA Environment & Infrastructure, Inc.
11870 Pierce Street, Suite 160
Riverside, CA 92505
Contact: Michael Wilcox, Senior Biologist
(951) 634-9765 – mobile, E-mail [email protected] 19 March 2024

Page 878 ends

Item 33.

TABLE OF CONTENTS
PAGE

1.0 INTRODUCTION.............................................................................................................1

2.0 PROJECT SITE / PROJECT DESCRIPTION..................................................................1

3.0 REGULATORY FRAMEWORK..........................................................................................1

3.1 Federal Endangered Species Act...........................................................................1

3.2 Federal Migratory Bird Treaty Act.........................................................................2

3.3 Clean Water Act ...................................................................................................2

3.3.2 California Environmental Quality Act ....................................................................4

3.3.3 Section 2081 of the State Fish and Game Code ....................................................5

3.3.4 Sections 3503, 3505.5, & 3513 of the State Fish and Game Code..........................5

3.4 Regional...............................................................................................................5

3.4.1 Coachella Valley Multiple Species Habitat Conservation Plan................................5

4.0 METHODS.......................................................................................................................6

4.1 Literature Review..................................................................................................6

4.2 Field Assessment..................................................................................................6

5.0 RESULTS .........................................................................................................................7

5.1 Coachella Valley Multiple Species Habitat Conservation Plan................................7

5.2 Weather Conditions .............................................................................................7

5.3 Topography, Soils and Waters..............................................................................8

5.4 Vegetation ...........................................................................................................9

5.5 Wildlife.................................................................................................................9

5.6 Special Status Biological Resources ....................................................................10

6.0 DISCUSSION.................................................................................................................24

6.1 Discussion of the Special Status Biological Resources Tables ..............................24

6.1.1 Species Covered Under the CVMSHCP ............................................................26

6.1.2 Plant Species Not Covered Under the CVMSHCP................................................27

6.1.3 Wildlife Species Not Covered Under the CVMSHCP..........................................28

6.1.4 Additional Bird Species Protected by the Migratory Bird Treaty Act....................29

6.1.5 Jurisdictional Areas.............................................................................................30

7.0 CONCLUSION...............................................................................................................30

8.0 LITERATURE CITED AND REFERENCES ..................................................................32

Page 879 ends

Item 33.

LIST OF TABLES
Table 1. Special Status Plants ................................................................................................11 Table 2. Special Status Vegetation Communities ...................................................................15 Table 3. Special Status Invertebrates .....................................................................................15 Table 4. Special Status Fish....................................................................................................16 Table 5. Special Status Reptiles .............................................................................................16 Table 6. Special Status Birds ..................................................................................................17 Table 7. Special Status Mammals...........................................................................................20

LIST OF APPENDICES
Appendix A. Species List: Vascular Plants
Appendix B. Species List: Vertebrate Animals
Appendix C. Figures
Appendix D. Photographic Exhibits

Page 880 ends

Item 33.

1.0 INTRODUCTION
At the request of Terra Nova Planning & Research, this biological resources assessment report (BRAR) and Coachella Valley Multiple Species Habitat Conservation Plan (CVMSHCP) consistency analysis was prepared by WSP USA Environment & Infrastructure, Inc. (WSP) for the proposed residential development (project) of a 38.80-acre site in Coachella, Riverside County, California (Figure 1). Information contained herein is intended to be used for compliance with the CVMSHCP, the California Environmental Quality Act (CEQA) and other relevant environmental regulations.

2.0 PROJECT SITE / PROJECT DESCRIPTION
The 38.80-acre project site is located at the southwest junction of Calhoun Street and Avenue 49 in Coachella, Riverside County, California. The Assessor’s Parcel Number (APN) is APN 612-260- 010. The project site is currently zoned as “Vacant Land – Predominate Agriculture Use” by the Riverside County Assessor, County Clerk and Recorders website (Riverside County Information Technology 2024). The project site is located within Section 36, Township 5 South, Range 7 East, United States Geological Survey (USGS) 7.5’ Indio, Calif. Quadrangle. Elevations range between approximately -7.6 to -9.1 meters (m) (-25 to -30 feet [ft]) below mean sea level (Figure 2).

The proposed project includes the development of new residential dwellings on the 38.80-acre vacant lot.

3.0 REGULATORY FRAMEWORK

3.1 Federal Endangered Species Act
The United States Fish and Wildlife Service (USFWS) and the National Marine Fisheries Service are the designated federal agencies accountable for administering the federal Endangered Species Act (FESA). The FESA defines species as “endangered” or “threatened” and provides regulatory protection at the federal level.
• Section 9 of the FESA prohibits the “take” of listed (i.e., endangered or threatened) species.

The FESA definition of take is “to harass, harm, pursue, hunt, shoot, wound, kill, trap, capture, collect, or attempt to engage in such conduct.” Recognizing that take cannot always be avoided, Section 10(a) includes provisions for take that is incidental to, but not the purpose of, otherwise lawful activities. Specifically, Section 10(a)(1)(A) permits (authorized take permits) are issued for scientific purposes Section 10(a)(1)(B) permits (incidental take permits) are issued for the incidental take of listed species that does not jeopardize the species.
• Section 7 (a)(2) requires federal agencies to evaluate the proposed project with respect to listed or proposed listed, species and their respective critical habitat (if applicable). Federal

Page 881 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 2 agencies must employ programs for the conservation of listed species and are prohibited from authorizing, funding, or carrying out any action that would jeopardize a listed species or destroy or modify its “critical habitat.” As defined by the FESA, “individuals, organizations, states, local governments, and other nonfederal entities are affected by the designation of critical habitat only if their actions occur on federal lands, require a federal permit, license, or other authorization, or involve federal funding. • Section 10(a) of the FESA authorizes the issuance of incidental take permits and establishes standards for the content of habitat conservation plans (HCP). The CVMSHCP is an HCP, see discussion below.

3.2 Federal Migratory Bird Treaty Act
Treaties signed by the United States, Great Britain, Mexico, Japan and the countries of the former Soviet Union make it unlawful to pursue, capture, kill, and/or possess, or attempt to engage in any such conduct to any migratory bird, nest, egg or parts thereof listed in this document. The Secretary of the Interior can issue permits for incidental take of migratory bird species. The Migratory Bird Treaty Act (MBTA) also allows the Secretary of the Interior to grant permits for specific actions for the incidental take of these protected migratory bird species, but this rarely occurs.

3.3 Clean Water Act
Waters of the United States
On August 29, 2023, the U.S. Environmental Protection Agency and the Department of the Army issued a final rule amending the "Revised Definition of 'Waters of the United States," initially published in the Federal Register on January 18, 2023. This amendment aligns the definition of "waters of the United States" (WOTUS) with the U.S. Supreme Court's decision in the case of Sackett v. Environmental Protection Agency on May 25, 2023. The Supreme Court deemed certain parts of the January 2023 Rule invalid based on its interpretation of the CWA in the Sackett decision. Consequently, the agencies have modified key elements of the regulatory text to comply with the Court's ruling. The conforming rule, titled "Revised Definition of 'Waters of the United States'; Conforming," was published in the Federal Register and became effective on September 8, 2023.

Furthermore, due to ongoing litigation, the January 2023 Rule is currently not in effect in certain states and for certain parties. The agencies are applying the January 2023 Rule, as amended by the conforming rule, in 23 states, the District of Columbia, and the U.S. Territories. In the remaining 27 states and for specific parties, the agencies are interpreting WOTUS in accordance with the pre-2015 regulatory framework and the Supreme Court's decision in Sackett until further notice.

To summarize some of the most applicable highlights, the agencies’ new rule defines WOTUS as:

Page 882 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 3 Categories of Jurisdictional Waters
1) Waters which are:
(i) Currently used, or were used in the past, or may be susceptible to use in interstate or foreign commerce, including all waters which are subject to the ebb and flow of the tide; (ii) The territorial seas; or
(iii) Interstate waters;
(2) Impoundments of waters otherwise defined as waters of the United States under this definition, other than impoundments of waters identified under paragraph (a)(5) of this section; (3) Tributaries of waters identified in paragraph (a)(1) or (2) of this section that are relatively permanent, standing or continuously flowing bodies of water; (4) Wetlands adjacent to the following waters:
(i) Waters identified in paragraph (a)(1) of this section; or (ii) Relatively permanent, standing or continuously flowing bodies of water identified in paragraph (a)(2) or (a)(3) of this section and with a continuous surface connection to those waters; (5) Intrastate lakes and ponds, streams, or wetlands not identified in paragraphs (a)(1) through (4) of this section that are relatively permanent, standing or continuously flowing bodies of water with a continuous surface connection to the waters identified in paragraph (a)(1) or (a)(3) of this section.

Eight exclusions from the definition of WOTUS are codified at paragraph (b), and key terms are defined at paragraph (c). "Adjacent" is defined at (c)(2) as "having a continuous surface connection."

3.3.1 Regional Water Quality Control Board
The Regional Water Quality Control Board (RWQCB) regulates activities pursuant to Section 401(a)(1) of the CWA. Section 401 of the CWA specifies that certification from the State is required for any applicant requesting a federal license or permit to conduct any activity including, but not limited to, the construction or operation of facilities that may result in any discharge into navigable waters. Through the Porter Cologne Water Quality Control Act, the RWQCB asserts jurisdiction over Waters of the State of California (WSC) which is generally the same as WUS but may also include isolated waterbodies. The Porter Cologne Act defines WSC as “surface water or ground water, including saline waters, within the boundaries of the state.”

Page 883 ends

Item 33.

3.3.2 California Environmental Quality Act
The basic goal of the CEQA is to maintain a high-quality environment now and in the future and the specific goals are for California's public agencies to:
1) Identify the significant environmental effects of their actions; and, either 2) Avoid those significant environmental effects, where feasible; or 3) Mitigate those significant environmental effects, where feasible.

The CEQA applies to "projects" proposed to be undertaken or requiring approval by State and local government agencies. Projects are activities which have the potential to have a physical impact on the environment and may include the enactment of zoning ordinances, the issuance of conditional use permits and the approval of tentative subdivision maps. Where a project requires approvals from more than one public agency, the CEQA requires one of these public agencies to serve as the "lead agency."
A "lead agency" must complete the environmental review process required by the CEQA. The most basic steps of the environmental review process are:
1) Determine if the activity is a "project" subject to the CEQA; 2) Determine if the "project" is exempt from the CEQA;
3) Perform an Initial Study to identify the environmental impacts of the project and determine whether the identified impacts are "significant". Based on its findings of "significance", the lead agency prepares one of the following environmental review documents:
a) Negative Declaration if it finds no "significant" impacts; b) Mitigated Negative Declaration if it finds "significant" impacts but revises the project to avoid or mitigate those significant impacts; c) Environmental Impact Report (EIR) if it finds "significant" impacts.

While there is no ironclad definition of "significance", Article 5 of the CEQA Guidelines provides criteria to lead agencies in determining whether a project may have significant effects.

The purpose of an EIR is to provide State and local agencies and the general public with detailed information on the potentially significant environmental effects which a proposed project is likely to have and to list ways in which the significant environmental effects may be minimized and indicate alternatives to the project.

Page 884 ends

Item 33.

3.3.3 Section 2081 of the State Fish and Game Code
Under Section 2081 of the California Fish and Game Code (FGC), the California Department of Fish and Wildlife (CDFW) authorizes individuals or public agencies to import, export, take, or possess state endangered, threatened, or candidate species in California through permits or memoranda of understanding. These acts, which are otherwise prohibited, may be authorized through permits or “memoranda of understanding” if (1) the take is incidental to otherwise lawful activities, (2) impacts of the take are minimized and fully mitigated, (3) the permit is consistent with regulations adopted in accordance with any recovery plan for the species in question, and (4) the applicant ensures suitable funding to implement the measures required by the CDFW. The CDFW shall make this determination based on the best scientific information reasonably available and shall include consideration of the species’ capability to survive and reproduce.

3.3.4 Sections 3503, 3505.5, & 3513 of the State Fish and Game Code Section 3503 of the FGC makes it unlawful to take, possess, or needlessly destroy the nest or eggs of any bird. Section 3505.5 makes it unlawful to take, possess, or destroy any birds in the order Falconiformes or Strigiformes (birds-of-prey, i.e.: owls, hawks, eagles, etc.) or to take, possess, or destroy the nest or eggs of any bird-of-prey. Section 3513 makes it unlawful to take or possess any migratory nongame bird as designated in the MBTA.

3.4 Regional

3.4.1 Coachella Valley Multiple Species Habitat Conservation Plan Finalized in October 2008, the CVMSHCP is a comprehensive, regional plan that addresses the conservation needs of 27 species of native flora and fauna and 24 natural vegetation communities occurring throughout the Coachella Valley region of western Riverside County, California. Permits for the CVMSHCP were issued by the CDFW on September 9, 2008 and the United States Fish and Wildlife Service (USFWS) on October 1, 2008 (TE104604-0). The CVMSHCP serves two primary purposes: Balancing environmental protection and economic development objectives in the CVMSHCP area and simplifying compliance with endangered species related laws. The CVMSHCP accomplishes this by conserving unfragmented habitat to permanently protect and secure viable populations of the covered species. The covered species include those plants and animals that are either currently listed as threatened or endangered, are proposed for listing, or are believed by an appointed Scientific Advisory Committee, USFWS and CDFW, to have a high probability of being proposed for listing in the future if not provided protection by the CVMSHCP. The goal of the CVMSHCP is to meet the requirements of the state and federal endangered species acts, while at the same time allowing for the economic growth (land development) within the plan area without significant delay or hidden costs. Under the CVMSHCP, land development/mitigation fees are

Page 885 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 6 collected from all new development projects occurring in the plan area. The purpose of this fee is to support the assembly of a preserve system for the covered species and natural vegetation communities within areas identified as having high conservation value.

4.0 METHODS

4.1 Literature Review
In preparation for the field surveys, a literature search was conducted to identify special status biological resources known from the vicinity of the project site. In the context of this report, and for the purpose of this assessment, vicinity is defined as areas within a 5-mile radius of the project site.

The literature search included a review of the following documents:
• California Natural Diversity Data Base (CNDDB) RareFind 5 (CDFW 2024a) • Special Animals List (CDFW 2024b)
• California Native Plant Society's (CNPS) Inventory of Rare, Threatened, and Endangered Plants of California (CNPS 2024a)
• Information for Planning and Consultation (IPaC) Resources List (USFWS 2024) • CVMSHCP (Coachella Valley Conservation Commission “CVCC” 2024) • United States Department of Agriculture (USDA), Natural Resources Conservation Service (NRCS). 2024. Web Soil Survey
• USGS 7.5’ Indio, La Quinta, Myoma, Valerie and West Berdoo Canyon, Calif. quadrangles (USGS 2015a, USGS 2015b, USGS 2015c, USGS 2015d, USGS 2021) Scientific nomenclature for this document follows standard reference sources: For plant communities, CVMSHCP (CVCC 2024); for flora, Jepson eFlora (2024) and the USDA NRCS PLANTS Database (2024); for amphibians, reptiles, and mammals, CDFW (2016); and for birds, California Bird Records Committee (2024).

4.2 Field Assessment
The field assessment was conducted between the hours of 1040 and 1240 on 29 February 2024 by WSP senior biologist Michael D. Wilcox. Onsite suitable habitat was assessed based on the presence of constituent habitat elements (e.g., soils, vegetation and topography) characteristic of the potentially occurring special status biological resources determined by the literature review.

The entire site and adjacent properties (where accessible) were assessed on foot to record pertinent field data and current site conditions. Where present, adjacent undeveloped areas within an approximate 150-meter (m) (~500-foot [ft]) buffer zone were also assessed visually, from the project site, for burrowing owl (Athene cunicularia). All onsite flora and fauna observed or otherwise detected (e.g., vocalizations, presence of scat, tracks, and/or bones) during the

Page 886 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 7 assessment were recorded in field notes and are included in Appendices A and B. General weather and site conditions were also recorded at the beginning and end of the survey. Temperatures and wind speeds were recorded with a handheld Kestrel 3500 anemometer. Percent cloud cover was visually estimated.

5.0 RESULTS
The fenced, 38.8-acre project site currently consists of a combination of an abandoned, remnant date palm farm, intermittent disturbed/ruderal areas and a largely barren area that has been cleared of nearly all vegetation and graded/scraped. With the exception of a few areas, primarily along the western edge of the site, vegetation is relatively sparse. Soils are largely stabilized, compacted and disturbed. Existing site disturbances observed onsite included abandoned, fallow agricultural practices (rows of remnant date palms and associated irrigation and/or farming structures), vegetation clearance, grading/scraping, dumping, offroad vehicular activity (minor), minor dumping and accumulation of roadside trash (minor).

Existing residential (tract home) developments occur to the north and south. The lands to the west are fenced and currently being graded and under construction, likely for future residential development (tract homes), while the lands to the east are largely vacant, undeveloped and disturbed.

5.1 Coachella Valley Multiple Species Habitat Conservation Plan The project site is located within Coachella, which is a signatory to the CVMSHCP. The site is not within any CVMSHCP-designated conservation areas. The closest is the East Indio Hills Conservation Area which is located approximately 5.5 kilometers (km) (3.4 mi) to the northeast and the Santa Rosa and San Jacinto Mountains Conservation Area, which is located approximately

7.4 km (4.6 mi) to the southwest of the site (Figure 3). The site does not contain CVMSHCP modeled habitats for any covered or special status species. The site is not within a fluvial sand transport area as illustrated on CVMSHCP Figure 4-5: Essential Ecological Processes Conserved Through General Plan Land Use Designations and Flood Control Standards (CVCC 2024). The site is not within any of the Coachella Valley Fringe-toed Lizard Preserves as illustrated on CVMSHCP Figure 6-2 (CVCC 2024). No CVMSHCP-designated wildlife corridors or biological linkages are mapped on the project site.

5.2 Weather Conditions
Weather conditions during the assessment included clear skies with no cloud cover. The temperatures ranged from 72 to 78 degrees Fahrenheit (°F). Winds were calm with speeds ranging 0 to 2 miles per hour (mph).

Page 887 ends

Item 33.

5.3 Topography, Soils and Waters
Existing topography is largely flat, sloping slightly to the south. Slight relief occurs only in the form of a manufactured linear embankment (edge of dirt perimeter road) along the northern site boundary and around a small, currently dry irrigation pond located in the northwestern corner of the site. Mapped soils (USDA NRCS 2024) include: Coachella fine sand, 0-2% slopes (CpA); Gilman fine sandy loam, 0-2% slopes (GbA) and Indio fine sandy loam (Ip) (Figure 4).

Coachella series soils are well-drained soils that are moderately rapidly permeable and occur in lacustrine basins at elevations from 230 feet below sea level to 800 feet above sea level. Although well drained, perched water tables are common in areas that are irrigated. Sediments originate largely from igneous rocks. Slopes are nearly level to gently sloping. The climate is arid with average annual rainfall ranging from 2 to 4 inches, occurring in light winter rains and/or high intensity summer monsoon thunderstorms (USDA NRCS 2024).

Gilman series soils are very deep, well drained soils with slow runoff and moderate permeability that were formed in stratified stream alluvium. This series generally occur at elevations from 75 to 2,500 feet above sea level. They are known to occur on flood plains and alluvial fans and have slopes of 0 to 3 percent. Gilman series soils generally range from non-saline to strongly saline.

Mean annual rainfall is 2 to 10 inches (USDA NRCS 2024).

Indio series soils are very deep, well to moderately well drained soils that were formed in alluvium and are derived from mixed rock sources. Runoff is generally slow and permeability is moderate.

This soil series generally occur at elevations from 230 feet below sea level to 1,400 feet above sea level on alluvial fans, lacustrine basins and flood plains. Slopes are usually gentle at 0 to 3 percent with the exception of where they occur on low stream or wash embankments. Mean annual precipitation ranges from 3 to 10 inches (USDA NRCS 2024).

Onsite soils are highly disturbed, a result of past date farming practices and grading in at least one area (the northeastern ¼ of the site). Prior to the planting of the date palms, the entire site was very likely scraped, cleared and graded. A former irrigation pond; evident by manufactured embankments, dried cracked substrates and remnant cement/concrete irrigation structures; is located in the northwest corner of the site. This irrigation pond was completely dry at the time of the assessment and exhibited no evidence of having recently held water or contained moisture (other than the dried, cracked substrate observed in the bottom). Irrigation furrows and underground piping is evident throughout the southern and western 2/3 of the site. No streams, washes, springs, active drifts, sand dunes, rock outcrops, rocky areas, or natural clay lenses were observed.

Page 888 ends

Item 33.

5.4 Vegetation
According to CVMSHCP Figure 3-1: Natural Communities and Development, onsite vegetation community is mapped as “ruderal” (CVCC 2023). Historic aerial imagery indicates that by 2002, the southern and western ¾ of the site was being used to grow dates. The northeastern ¼ of the site appears to have been cleared of vegetation and has remained vacant, undeveloped and not used to grow dates since 2002 at least. Although Sawyer et. al. (2009) does not provide a description for agricultural and/or disturbed areas, perhaps the best way to describe the current vegetation present onsite would likely be abandoned/fallow agricultural lands with sparse, remnant patches of Atriplex lentiformis shrubland alliance (quailbush scrub), ruderal/disturbed and largely barren areas (primarily in the northeastern ¼ of the site) occurring intermittently throughout (Figure 5). The dominant plant species onsite is the formerly cultivated date palm (Phoenix dactylifera) that intermittently remain in east/west linear rows throughout the western and southern ¾ of the site. Although relatively sparse and primarily located along the perimeter and in linear rows, in between and beneath the rows of date palms, native perennial plant species observed included quailbush (Atriplex lentiformis), arrow-weed (Pluchea sericea), common sunflower (Helianthus annuus) and blue palo verde (Parkinsonia florida). Other plant species observed primarily included a mixture of non-native, invasive and/or ruderal species. These included puncture vine (Tribulus terrestris), amaranth (Amaranthus sp.), cheeseweed (Malva parviflora), Sahara mustard (Brassica tournefortii), Mexican palo verde (Parkinsonia aculeata), saltcedar (Tamarisk ramosissima) and Bermuda grass (Cynodon dactylon). A complete list of the plant species observed onsite is included in Appendix A.

No natural wetland, riparian or otherwise special-status vegetation communities were observed on-site. A full list of the plant species observed during the surveys, including common and scientific names, is appended to this report (Appendix A).

5.5 Wildlife
Vertebrate wildlife directly observed and/or detected otherwise (e.g., scat, bones, tracks, feathers, burrows, etc.) during the surveys was not diverse or abundant, limited to 17 species common to the region. This included one reptile, 14 birds and two mammals (Appendix B).

The one reptile species observed onsite include the side-blotched lizard (Uta stansburiana).

Representative bird species observed onsite included but were not limited to: Eurasian collared dove (Streptopelia decaocto), mourning dove (Zenaida macroura), red-shouldered hawk (Buteo lineatus), red-tailed hawk (Buteo jamaicensis), American kestrel (Falco sparverius), common raven (Corvus corax), verdin (Auriparus flaviceps), northern mockingbird (Mimus polyglottos), house finch (Haemorhous mexicanus) and white-crowned sparrow (Zonotrichia leucophrys). The two mammals observed and/or detected onsite included Botta’s pocket gopher (Thomomys bottae) and

Page 889 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 10 California ground squirrel (Otospermophilus beecheyi). A complete list of the vertebrate species observed or detected onsite is included as Appendix B.

It should be noted that relatively short-term biological studies of this nature are often limited by the seasonality of annual plants, the migratory habits of many birds, the fossorial and nocturnal habits of many mammals and reptiles, as well as the timing of field visit. A complete inventory of the wildlife on the site would require extensive year-round surveys for birds, amphibians, and reptiles, and additional surveys, such as placement of scent stations or tracking stations, for the detection of nocturnal mammals. Knowledge of habitat associations, natural history, seasonality, and distribution is essential in the assessment of the potential for occurrence of the various special status plants and animals known to occur throughout the Coachella Valley. For these reasons, other common and special status species that were not observed onsite may also have the potential to occur based on their geographic distribution, habitat preferences and the regional location of the site. The following section summarizes information on special status biological resources known to occur in the vicinity of the project site.

5.6 Special Status Biological Resources
Plant or animal taxa may be considered "sensitive" or as having “special status” due to declining populations, vulnerability to habitat change, or because they have restricted ranges. Some are listed as threatened or endangered by the USFWS or by the CDFW and are protected by the federal and state Endangered Species acts. Others have been identified as sensitive or as specialstatus species by the USFWS, the CDFW, or by private conservation organizations, including the CNPS. Unlisted sensitive species do not have formal state or federal status but may nevertheless be considered significant under the CEQA. The CVMSHCP provides conservation for twenty-seven (27) imperiled plant and animal species (5 plants, 2 insects, 1 amphibian, 3 reptiles, 11 birds, and 5 mammals). These include federal and state-listed species, federal and California Species of Concern, and species on the CNPS sensitive species lists. CVMSHCP covered species are designated on the tables below. The site is not within designated critical habitat for any special status plants or wildlife.

The review of the CNDDB, CNPS Online Inventory of Rare Plants and IPaC Resources List resulted in the identification of 68 special status biological resources known to occur in the vicinity (within an approximate 5-mile radius) of the project site. The 68 special status biological resources known from the vicinity included 33 plants, one vegetation communities, five invertebrates, one fish, four reptiles, 14 birds and 10 mammals. Tables 1 through 7 provide a complete list of the special status biological resources, their associated legal status, and their respective onsite occurrence potentials.

Page 890 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 11 Tables 1 through 7 summarize information on all special status species that have been reported within the vicinity (5-mile radius) or that occur or are considered to have some potential to occur onsite based on geographic distribution, elevational parameters and/or presence of potentially suitable habitat. Occurrence probability is based on the best available information and the collective expertise of WSP biologists. These tables provide the names, legal or conservation status, general habitat associations, and the probability of occurrence for each of these species.

Table 1. Special Status Plants
Species Status Habitat Probability
Abronia villosa var. aurita
chaparral sand-verbena
F: None
C: None
CNPS: List 1B.1
State Rank: S2
CVMSHCP: No
Sandy areas in chaparral,
coastal sage scrub & desert
dune habitats. 80-1,600 m.
(262-5,249 ft.); B: (Jan) MarSept.

Absent
Suitable habitat lacking. Site
below known elevational range
of species.

Astragalus lentiginosus var.
borreganus
Borrego milk-vetch
F: None
C: None
CNPS List: 4.3
State Rank: S4
CVMSHCP: No
Mojavean desert scrub,
Sonoran Desert scrub; sandy.
30-895 m. (100-2,935 ft.); B:

Feb-May.

Absent
Suitable habitat lacking. Site
below known elevational range
of species.

Astragalus lentiginosus var.
coachellae
Coachella Valley milk-vetch
F: END
C: None
CNPS: 1B.2
State Rank: S1
CVMSHCP: Yes
Sonoran desert scrub; sandy
flats, washes, outwash fans,
sometimes on dunes. 40-665
m. (131-2,182 ft.); B: Jan–Sept.

Absent
Suitable habitat lacking. Site
below known elevational range
of species. Site is not within
designated critical habitat or
CVMSHCP modeled habitat for
this species.

Astragalus preussii var. laxiflorus
Lancaster milk-vetch
F: None
C: None
CNPS: 1B.1
State Rank: S1
CVMSHCP: No
Chenopod scrub. 700 m. (2,295
ft.); B: Mar–May.

Absent
Suitable habitat lacking. Site
below known elevational range
of species.

Astragalus subulonum
gravel milk-vetch
F: None
C: None
CNPS: 2B.2
State Rank: S2
CVMSHCP: No
Mojavean desert scrub,
Sonoran desert scrub; dunes; -
60-930 m. (195-3,050 ft.); B:

Feb–Jun.

Absent
Suitable habitat lacking. Site
below known elevational range
of species.

Astragalus tricarinatus
triple-ribbed milk-vetch
F: END
C: None
CNPS: 1B.2
State Rank: S2
CVMSHCP: Yes
Joshua tree woodland &
Sonoran desert scrub on hot,
rocky slopes in canyons &
along edge of boulder-strewn
desert washes with
Larrea and Encelia. 455-1,525
m. (1,492-5,000 ft.); B: Feb–
May.

Absent
Suitable habitat lacking. Site
below known elevational range
of species.

Bursera microphylla
little-leaf elephant tree
F: None
C: None
CNPS: 2B.3
State Rank: S3
Sonoran desert scrub, hillsides,
canyon sides and washes;
rocky. 195-700 m. (640-2,297
ft.); B: Jun-Jul.

Absent
Suitable habitat lacking. Site
below known elevational range
of species.

Page 891 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 12 Table 1. Special Status Plants
Species Status Habitat Probability
CVMSHCP: No
Chorizanthe leptotheca
Peninsular spineflower
F: None
C: None
CNPS: 4.2
State Rank: S3
CVMSHCP: No
Chaparral, coastal scrub, lower
montane coniferous forest.
300-1,900 m. (985-6,230 ft.); B:

May-Aug.

Absent
Suitable habitat lacking. Site
below known elevation range of
species.

Ditaxis claryana
glandular ditaxis
F: None
C: None
CNPS: 2B.2
State Rank: S2
CVMSHCP: No
Mojavean & Sonoran desert
scrub. 0-465 m. (0-1,526 ft.); B:

Oct–Mar.

Absent
Suitable habitat lacking. Site
below known elevational range
of species.

Ditaxis serrata var. californica
California ditaxis
F: None
C: None
CNPS: 3.2
State Rank: S2?
CVMSHCP: No
Sonoran desert scrub. 30 to
1,000 m. (98-3,281 ft.); B: MarDec.

Absent
Suitable habitat lacking. Site
below known elevational range
of species.

Eremothera boothii var. boothii
Booth’s evening primrose
F: None
C: None
CNPS: 2B.3
State Rank: S3
CVMSHCP: No
Joshua tree woodland, pinyon
& juniper woodland. 815-2,400
m. (2,674-7,874 ft.); B: Apr-Sep.

Absent
Suitable habitat lacking. Site
below known elevational range
of species.

Eschscholtzia androuxii
Joshua Tree poppy
F: None
C: None
CNPS: 4.3
State Rank: S3
CVMSHCP: No
Mojavean desert scrub, Joshua
tree woodland. 585-1,685 m.
(1,920-5,530 ft.); B: Feb-May
(Jun).

Absent
Suitable habitat lacking. Site
below known elevational range
of species.

Euphorbia abramsiana
Abrams’ spurge
F: None
C: None
CNPS: 2B.2
State Rank: S2
CVMSHCP: No
Sandy sites in Mojave and
Sonoran desert scrub. -5–1,450
m. (-16-4,757 ft.). B: (Aug)
Sept- Nov.

Very Low
Remnant marginally suitable
habitat very limited, disturbed
and largely stabilized. Only
small, insignificant pockets of
sandy soils present. Site just
below/at edge of elevational
range of species.

Euphorbia arizonica
Arizona spurge
F: None
C: None
CNPS: 2B.3
State Rank: S3
CVMSHCP: No
Sandy soils in Sonoran desert
scrub; 50-300 m. (200-1,000 ft);
B: Mar-Apr.

Absent
Suitable habitat lacking. Site
below known elevational range
of species.

Euphorbia platysperma
flat-seeded spurge
F: None
C: None
CNPS: 1B.2
State Rank: S1
CVMSHCP: No
Sandy Sonoran desert scrub,
shifting dunes. In CA,
potentially a waif; more
common in AZ and MX. 65-100
m. (215-330 ft.); B: Feb-Sep.

Absent
Suitable habitat lacking. Site
below known elevational range
of species.

Horsfordia alata
pink velvet-mallow
F: None
C: None
CNPS: 4.3
State Rank: S4
Sonoran desert scrub (rocky).
100-500 m. (330-1,640 ft); B:

Feb-Dec.

Absent

Page 892 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 13 Table 1. Special Status Plants
Species Status Habitat Probability
CVMSHCP: No Suitable habitat lacking. Site
below known elevational range
of species.

Horsfordia newberryi
Newberry's velvet-mallow
F: None
C: None
CNPS: 4.3
State Rank: S4
CVMSHCP: No
Sonoran desert scrub (rocky).
8-300 m. (26-984 ft); B: FebDec.

Absent
Suitable habitat lacking. Site
below known elevational range
of species.

Johnstonella costata
ribbed cryptantha
F: None
C: None
CNPS: 4.3
State Rank: S4
CVMSHCP: No
Desert dunes, Mojavean desert
scrub, Sonoran desert scrub; -
60-500 m (-195-1,640 ft); B:

Feb-May.

Very Low
Remnant marginally suitable
habitat very limited, disturbed
and largely stabilized. Only
small, insignificant pockets of
sandy soils present.

Johnstonella holoptera
winged cryptantha
F: None
C: None
CNPS: 4.3
State Rank: S4
CVMSHCP: No
Sonoran desert scrub,
Mojavean desert scrub; sandy
or rocky canyons. 100-1,690 m.
(328-5,545 ft); B: Mar-Apr.

Absent
Suitable habitat lacking. Site
below known elevational range
of species.

Juncus acutus ssp. leopoldii
southwestern spiny rush
F: None
C: None
CNPS: 4.2
State Rank: S4
CVMSHCP: No
Coastal dunes (mesic), coastal
scrub, meadows & seeps
(alkaline), marshes & swamps
(coastal salt) Mojavean desert
scrub, Sonoran desert scrub; -
3-900 m (-10-2,955 ft). B: MarJun.

Absent
Suitable habitat lacking. Former
irrigation pond located in NW
corner of site and irrigation
rows for date palms currently
dry. Site just below/at edge of
elevational range of species.

Juncus cooperi
Cooper’s rush
F: None
C: None
CNPS: 4.3
State Rank: S3
CVMSHCP: No
Meadows & seeps (mesic,
alkaline or saline). -260-1,700
m (-855-5,805 ft); B: Apr-Aug.

Absent
Suitable habitat lacking. Former
irrigation pond located in NW
corner of site and irrigation
rows for date palms currently
dry.

Leptosiphon floribundus
Santa Rosa Mountains
leptosiphon
F: None
C: None
CNPS: 1B.3
State Rank: S1S2
CVMSHCP: No
Sonoran desert scrub, pinyon
juniper woodland; 1,000-2,000
m (3,280–6,560 ft); B: May-Jul
(Nov).

Absent
Suitable habitat lacking. Site
below known elevational range
of species.

Lycium torreyi
Torrey's box-thorn
F: None
C: None
CNPS: 4.2
State Rank: S3
CVMSHCP: No
Mojavean desert scrub,
Sonoran desert scrub; -50 -
1220 m (-165–4,005 ft); B: (JanFeb) Mar-Jun (Sep-Nov).

Absent
Remnant marginally suitable
habitat very limited and
disturbed. Conspicuous
perennial species would likely
have been detected if present.

Marina orcuttii var. orcuttii
California marina
F: None
C: None
CNPS: 1B.3
Chaparral, pinyon and juniper
woodland, Sonoran desert
scrub, rocky. 1,050-1,160 m
(3,445–3,806 ft); B: May-Oct.

Absent

Page 893 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 14 Table 1. Special Status Plants
Species Status Habitat Probability
State Rank: S2?
CVMSHCP: No
Suitable habitat lacking. Site
below known elevational range
of species.

Matelea parvifolia
spear-leaf matelea
F: None
C: None
CNPS: 2B.3
State Rank: S3
CVMSHCP: No
Mojavean desert scrub,
Sonoran desert scrub, rocky.
440-1,095 m. (1,445–3,595 ft.);
B: Mar-May (Jul).

Absent
Suitable habitat lacking. Site
below known elevational range
of species.

Nemacaulis denudata var. gracilis
slender cottonheads
F: None
C: None
CNPS: 2B.2
State Rank: S2
CVMSHCP: No
Sandy places in coastal dunes,
desert dunes & Sonoran desert
scrub. 50-400 m. (164-1,315
ft.); B: Mar–May.

Absent
Suitable habitat lacking. Site
below known elevational range
of species.

Petalonyx linearis
narrow-leaf sandpaper-plant
F: None
C: None
CNPS: 2B.3
State Rank: S3?
CVMSHCP: No
Sandy or rocky canyons in
Mojavean desert scrub and
Sonoran desert scrub; -25-1115
m. (-80-3,660 ft.); B: Mar-May
(sometimes Jan-Dec).

Absent
Suitable habitat lacking.

Perennial sandpaper-plant
(Petalonyx spp.) not observed.

Phaseolis filiformis
slender-stem bean
F: None
C: None
CNPS: 2B.1
State Rank: S1
CVMSHCP: No
Sonoran desert scrub. 125 m
(410 ft.); B: Apr.

Absent
Suitable habitat lacking. Site
below known elevational range
of species.

Pseudorontium cyanthiferum
Deep Canyon snapdragon
F: None
C: None
CNPS: 2B.3
State Rank: S1
CVMSHCP: No
Sonoran desert scrub in rocky
washes and on rocky slopes in
the immediate vicinity of Deep
Canyon. 0-800 m. (0-2,625 ft.);
B: Feb-Apr.

Absent
Suitable habitat lacking. Site
below known elevational range
of species.

Selaginella eremophila
desert spike-moss
F: None
C: None
CNPS: 2B.2
State Rank: S2S3
CVMSHCP: No
Chaparral, Sonoran Desert
scrub; shaded sites, gravelly
soils, crevices or among rocks.
200-900 m. (656-2,953 ft.); B:

May–Jul.

Absent
Suitable habitat lacking. Site
below known elevational range
of species.

Senna covesii
Cove’s cassia
F: None
C: None
CNPS: 2B.2
State Rank: S3
CVMSHCP: No
Sonoran Desert scrub, dry,
sandy desert washes & slopes.
225-1,295 m. (740-4,250 ft.); B:

Mar–Jun (Aug).

Absent
Suitable habitat lacking. Site
below known elevational range
of species.

Stemodia durantifolia
purple stemodia
F: None
C: None
CNPS: List 2B.1
State Rank: S2.1?
CVMSHCP: No
Mesic sites on sandy soils in
Sonoran desert scrub. 180-300
m. (590–980 ft.); B: (Jan) AprDec.

Absent
Suitable habitat lacking. Site
below known elevational range
of species.

Xylorhiza cognata
Mecca-aster
F: None
C: None
CNPS: List 1B.2
State Rank: S2
CVMSHCP: Yes
Grows on steep canyon slopes
on sandstone and clay
substrates, 20-305 m (65–1,000
ft); B: Jan-Jun.

Absent
Suitable habitat lacking. Site
below known elevational range
of species.

Page 894 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 15 Table 2. Special Status Vegetation Communities
Community Status Habitat Probability
desert fan palm oasis woodland
F: None
C: S3.2
State Rank: S3.2
CVMSHCP: Yes
Natural California fan palm
(Washingtonia filifera) stands
Absent
Only small, sapling fan
palms and cultivated
date palms (Phoenix
dactilifera) observed
onsite.

Table 3. Special Status Invertebrates
Community Status Habitat Probability
Dinacoma caseyi
Casey’s June beetle
F: END
C: None
State Rank: S1
CVMSHCP: No
Appears to be entirely
restricted to the mouth and
alluvial floodplain of Palm
Canyon Wash and Tahquitz
Creek in Palm Springs, in
association with deposits of
fine silts, sands and gravels
Absent
Suitable habitat lacking.

Site outside of known
range of species. Site is
not within designated
critical habitat or USFWS
recommended survey
area for this species.

Danaus plexippus
monarch butterfly
F: FC
C: None
State Rank: S2S3
CVMSHCP: No
Western winter roost sites
primarily occur along the
coast from northern
Mendocino to Baja
California, Mexico, located in
wind-protected tree groves
(Eucalyptus species,
Monterey pine (Pinus
radiata), cypress), with nectar
and water sources nearby.

During breeding season,
adults widespread but scarce
in the desert. Larvae require
milkweed
Absent
Suitable habitat lacking.

Larval host plants
(milkweeds) not observed.

Winter roost sites not
present. Adults may,
however, occasionally fly
through site.

Macrobaenetes valgum
Coachella giant sand treader
cricket
F: None
C: None
State Rank: S1S2
CVMSHCP: Yes
Active sand dune hummocks
and ridges, sites favorable to
permanent habitation
include spring-moistened
sand.

Absent
Suitable habitat lacking.

Sand dunes and
hummocks not present.

Site is not within
CVMSHCP modeled
habitat for this species.

Oliarces clara
cheeseweed owlfly
F: None
C: None
State Rank: S2
CVMSHCP: No
Known from lower Colorado
River drainage, associated
with creosote bush (Larrea
tridentata) in desert scrub;
creosote is suspected larval
host. Found under rocks or
in flight over streams.

Absent
Suitable habitat lacking.

No drainages or washes
on the site.

Page 895 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 16 Table 3. Special Status Invertebrates
Euparagia unidentate
Algodones Dunes Euparagia
F: None
C: None
State Rank: S1S2
CVMSHCP: No
Desert dunes.

Absent
Suitable habitat lacking.

Dune habitats not
present.

Table 4. Special Status Fish
Community Status Habitat Probability
Cyprinodon macularius
desert pupfish
F: END
C: END
State Rank: S1
CVMSHCP: Yes
Desert ponds, springs,
marshes and streams.

Absent
Suitable aquatic habitat
lacking. Former
irrigation pond in NW
corner of site currently
dry. Site is not within
designated critical
habitat or CVMSHCP
modeled habitat for this
species.

Table 5. Special Status Reptiles
Species Status Habitat Probability
Crotalus ruber ruber
northern red diamond
rattlesnake
F: ND
C: SSC
State Rank: S2?
CVMSHCP: No
Favors rocky areas and
dense vegetation, shelters in
rodent burrows, rock cracks,
or surface cover. Known
from the eastern slopes of
the Peninsular Ranges,
desert floor up to 5,000 feet
Absent
Suitable habitat lacking.

Gopherus agassizi
desert tortoise
F: THR
C: THR
State Rank: S2
CVMSHCP: Yes
Creosote bush scrub, Joshua
tree woodland, saltbush
scrub); washes, arroyos,
bajadas, rocky hillsides, open
flat desert.

Absent
Suitable habitat lacking.

Site formerly agricultural
(date palm farm). Sign
(burrows, scat, remains,
etc.) not observed. Site is
not within designated
critical habitat or
CVMSHCP modeled
habitat for this species.

Phrynosoma mcallii
flat-tailed horned lizard
F: None
C: SSC
State Rank: S2
CVMSHCP: Yes
Sandy and gravelly areas in
desert washes, edges of
dunes and desert flats;
requires vegetative cover,
ants & fine sand.

Absent
Suitable habitat lacking.

Site disturbed with only
small, remnant patches of
sandy soils and native
plant species. Site not
within CVMSHCP modeled
habitat for this species.

Page 896 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 17 Table 4. Special Status Fish
Community Status Habitat Probability
Cyprinodon macularius
desert pupfish
F: END
C: END
State Rank: S1
CVMSHCP: Yes
Desert ponds, springs,
marshes and streams.

Absent
Suitable aquatic habitat
lacking. Former
irrigation pond in NW
corner of site currently
dry. Site is not within
designated critical
habitat or CVMSHCP
modeled habitat for this
species.

Table 5. Special Status Reptiles
Species Status Habitat Probability
Uma inornata
Coachella Valley fringe-toed
lizard
F: THR
C: END
State Rank: S1
CVMSHCP: Yes
Requires fine, loose,
windblown sand (dunes)
interspersed with hardpan &
widely spaced desert shrubs.

Known only from the
Coachella Valley.

Absent
Suitable habitat lacking.

Site disturbed, primarily
stabilized with only small,
remnant patches of sandy
soils and native plant
species. Site is not within
designated critical habitat
or CVMSHCP modeled
habitat for this species.

Table 6. Special Status Birds
Species Status Habitat Probability
Accipiter cooperii
Cooper’s hawk
F: MBTA
C: Watch List
State Rank: S4
CVMSHCP: No
Woodland, chiefly of open,
interrupted or marginal type,
including residential areas.

Nests in trees.

Nesting: Absent
Suitable nesting habitat
lacking.

Foraging: Occurs
Observed.

Aquila chrysaetos
golden eagle
F: BGEPA, MBTA, BCC
C: FP, WL
State Rank: S3
CVMSHCP: No
Forages over rolling foothills,
mountain areas, sage-juniper
flats, and desert. Cliff-walled
canyons used for nesting,
sometimes large trees in
open areas.

Nesting: Absent
Suitable habitat lacking.

Foraging: Low
Marginally suitable
habitat present.

Page 897 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 18 Table 6. Special Status Birds
Species Status Habitat Probability
Athene cunicularia
burrowing owl
F: MBTA, BCC
C: SSC (burrows), FGC
State Rank: S2
CVMSHCP: Yes*
Open, dry annual or perennial
grassland, deserts &
scrublands characterized by
low-growing vegetation.

Burrow sites essential.

Nesting: Low
Marginally suitable
habitat intermittently
present. Suitable
California ground
squirrel burrows
detected.

Foraging: Low
If present onsite or on
other suitable lands to
the east of the site.

Buteo regalis
ferruginous hawk
F: MBTA, BCC
C: WL
State Rank: S3S4
CVMSHCP: No
Great Basin grassland, Great
Basin scrub, pinon & juniper
woodland, valley & foothill
grassland.

Nesting: Absent
Suitable habitat lacking.

Foraging: Low
During winter and
migration only.

Calypte costae
Costa’s hummingbird
F: MBTA, BCC
C: None
State Rank: S4
CVMSHCP: No
Desert and semi-desert, arid
brushy foothills and chaparral,
in migration and winter also
in adjacent mountains and in
open meadows and gardens
Nesting: Moderate
Suitable nesting habitat
(sparse palo verde)
present.

Foraging: Occurs
Observed.

Empidonax traillii extimus
southwestern willow flycatcher
F: END, MBTA
C: END
State Rank: S1
CVMSHCP: Yes*
Breeds in dense riparian
areas.

Nesting: Absent
Suitable habitat lacking.

Foraging: Very Low
Occurs in many habitats
during migration.

Site is not within
designated critical
habitat for this species.

Falco mexicanus
prairie falcon
F: MBTA, BCC
C: SSC (nesting), FGC
State Rank: S3
CVMSHCP: No
Inhabits dry, open terrain,
either level or hilly. Breeding
sites located on cliffs, but
forages far afield.

Nesting: Absent
Suitable habitat lacking.

Foraging: Moderate
May nest or winter
nearby & forage over
site.

Haliaeetus leucocephalus
bald eagle
F: BGEPA, MBTA, BCC
C: END, FP
State: S3
CVMSHCP: No
Margins of lakes, rivers, and
other bodies of water. In
Southern California, nests at
Big Bear Lake and Lake
Silverwood in the San
Bernardino Mountains and
Lake Hemet in the San Jacinto
Mountains.

Nesting: Absent
Suitable habitat lacking.

Foraging: Absent
Suitable habitat lacking.

Page 898 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 19 Table 6. Special Status Birds
Species Status Habitat Probability
Lanius ludovicianus
loggerhead shrike
F: MBTA, BCC
C: SSC (nesting), FGC
State Rank: S4
CVMSHCP: No
Open fields with scattered
trees or shrubs, open country
with short vegetation,
pastures, old orchards,
cemeteries, golf courses,
riparian areas & open
woodlands.

Nesting: Very Low
Suitable nesting habitat
very limited.

Foraging: Moderate
May nest or winter
nearby & forage onsite.

Polioptila melanura
black-tailed gnatcatcher
F: ND
C: ND
State rank: S3S4
CVMSHCP: No
Nests in wooded desert wash
habitat containing mesquite,
palo verde, ironwood, and
acacia. May also occur in
areas with salt cedar,
especially when adjacent to
native wooded desert wash
habitat. Also occurs in desert
scrub habitat in winter.

Nesting: Very Low
Suitable nesting habitat
(palo verde) limited.

Foraging: Low
May forage or move
through site from nearby
areas.

Pyrocephalus rubinus
vermilion flycatcher
F: MBTA
C: SSC (nesting)
State Rank: S2S3
CVMSHCP: No
During nesting, inhabits
desert riparian adjacent to
irrigated fields, irrigation
ditches, pastures, & other
open, mesic areas with nests
in cottonwood, willow,
mesquite, or other large
desert riparian trees. Also
known to nest in landscaped
areas such as commercial and
residential developments, golf
courses and parks.

Nesting: Absent
Suitable nesting habitat
lacking.

Foraging: Low
If nesting nearby.

Toxostoma crissale
crissal thrasher
F: None
C: SSC
State Rank: S3
CVMSHCP: Yes*
Resident of SE deserts in
desert riparian and wash
habitats, nests in dense
mesquite, ironwood, catclaw,
arrowweed.

Nesting: Absent
Suitable nesting habitat
lacking.

Foraging: Very low
If nesting nearby.

Site is not within
CVMSHCP modeled
habitat for this species.

Page 899 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 20 Table 6. Special Status Birds
Species Status Habitat Probability
Toxostoma lecontei
Le Conte’s thrasher
F: MBTA, BCC
C: SSC (nesting), FGC
State Rank: S3
CVMSHCP: Yes*
Desert resident; primarily of
open desert wash, desert
scrub, alkali desert scrub, and
desert succulent scrub
habitats. Nest in dense, spiny
shrub or densely branched
cactus in desert wash habitat,
usually 2-8 feet above
ground.

Nesting: Absent
Suitable nesting habitat
lacking.

Foraging: Very Low
If nesting nearby.

Suitable habitat not
observed on adjacent
lands, however.

Site is not within
CVMSHCP modeled
habitat for this species.

Vireo bellii pusillus
least Bell’s vireo
F: END
C: END
State rank: S2
CVMSHCP: Yes
Riparian woodland habitats
along the riverine systems of
Southern California, primarily
in San Diego, Santa Barbara,
and Riverside Counties.

Needs dense shrub cover
within 1 to 2 meters (3 to 6
feet) off the ground for
nesting, and stratified canopy
for foraging
Nesting: Absent
Suitable habitat lacking.

Foraging: Low
Migration only
Site is not within
designated critical
habitat for this species.
* Species conserved under the CVMSHCP, but is still protected by the MBTA and FGC Table 7. Special Status Mammals
Species Status Habitat Probability
Chaetodipus fallax pallidus
pallid San Diego pocket mouse
F: None
C: SSC
State Rank: S3S4
CVMSHCP: No
Desert border areas in
desert wash, desert scrub,
desert succulent scrub,
pinon-juniper, etc. Sandy
herbaceous areas usually in
association with rocks or
coarse gravel.

Absent
Suitable habitat lacking.

Site largely disturbed
former date palm farm.

Dipodomys merriami collinus
Earthquake Merriam's
(Aguanga) kangaroo rat
F: None
C: SSC
State Rank: S1S2
CVMSHCP: No
Known only from San Diego
& Riverside Counties.

Associated with Riversidean
sage scrub, chaparral, &
non-native grassland. Needs
sandy loam substrates for
digging of burrows.

Absent
The CNDDB records near
site out of range and
habitat for this
subspecies. Presumably
these records are in error
and refer to a different
subspecies.

Page 900 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 21 Table 7. Special Status Mammals
Species Status Habitat Probability
Eumops perotis californicus
western mastiff bat
F: ND
C: CSC
State Rank: S3S4
CVMSHCP: No
WBWG: M (Region 8)
Many open, semi-arid to arid
areas including conifer and
deciduous forests,
grasslands, chaparral, and
coastal scrubs. Roosts in
crevices in cliff faces,
buildings, trees, and tunnels.

Roosting: Absent
Roosting habitat lacking.

Foraging: Low
May forage over site if
roosting nearby.

Lasiurus xanthinus
western yellow bat
F: None
C: SSC
State Rank: S3
WBWG: H
CVMSHCP: Yes
Found in a variety of
habitats: Valley foothill
riparian, desert riparian,
desert wash, and palm oasis
habitats
Roosting: Absent
Roosting habitat lacking.

Foraging: Low
May forage over site if
roosting nearby.

Neotoma lepida intermedia
San Diego desert woodrat
F: None
C: SSC
State Rank: S3S4
CVMSHCP: No
Coastal scrub of southern
California. Moderate to
dense canopies preferred.

Particularly abundant in rock
outcrops & rocky cliffs &
slopes.

Absent
Habitat lacking. Middens
not detected. Site heavily
disturbed.

Nyctinomops femorosaccus
pocketed free-tailed bat
F: None
C: SSC
State Rank: S2S3
WBWG: M
CVMSHCP: No
Rocky areas with high cliffs
in a variety of arid areas in
southern California.

Roosting: Absent
Suitable habitat lacking
Foraging: Low
May roost in vicinity and
forage over site.

Peninsular bighorn sheep DPS
Ovis canadensis nelsoni (Pop. 2)
F: END
C: THR
State Rank: S1
MSHCP: Yes
Eastern slopes of the
Peninsular Ranges below
4,600 feet. Optimal habitat
includes steep-walled
canyons/ridges bisected by
rocky or sandy washes w/
available water
Absent
Suitable habitat lacking.

Site is not within
designated critical habitat
or CVMSHCP modeled
habitat for this species.

Perognathus longimembris bangsi
Palm Springs pocket mouse
F: None
C: SSC
State Rank: S2
CVMSHCP: Yes
Inhabits flat or gently
sloping areas with sparse
vegetative cover and packed
or sandy soils.

Very Low
Only small, remnant
patches of marginal
potentially suitable
habitat present. Site
disturbance and past
agricultural practices
further reduce the
likelihood of occurrence.

Site not within CVMSHCP
modeled habitat for this
species.

Taxidea taxus
American badger
F: ND
C: CSC
State Rank: S3
CVMSHCP: No
Widespread, occurring in a
wide variety of usually open
habitats.

Very Low
Although disturbed, site
potentially suitable. No
burrows or sign observed.

Page 901 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 22 Table 7. Special Status Mammals
Species Status Habitat Probability
Xerospermophilus tereticaudus
chlorus
Coachella Valley (Palm Springs)
round-tailed ground squirrel
F: None
C: SSC
State Rank: S1S2
CVMSHCP: Yes
Prefers open, flat, grassy
areas in fine-textured, sandy
soil in desert succulent
scrub, desert wash, desert
scrub, alkali scrub, & levees.

Very Low
Preferred habitat lacking.

Species has been known
to occur in disturbed and
converted habitats.

Site not within CVMSHCP
modeled habitat for this
species.

Definitions of status designations and occurrence probabilities for Tables 1-7 Definitions for Species
Italics – Scientific name (i.e., Genus species subspecies) Bold – Standard common name
[Genus] – Previous genus, relatively recent taxonomic revision var. – variety (plants only)
DPS – Distinct Population Segment
Definitions of occurrence probability:

Occurs: Observed or detected onsite by WSP or recently reported by another reliable source.

High: Observed in similar habitat in region by qualified biologists, or habitat onsite is a type often utilized by the species and the site is within the known range of the species.

Moderate: Reported sightings in surrounding region, or site is within the known range of the species and habitat onsite is a type occasionally used by the species.

Low: Site is within the known range of the species but habitat onsite is rarely used by the species Very Low: Habitat is of marginal suitability and/or site is at the edge of species known range or distribution.

Absent:A focused study failed to detect the species, suitable habitat not present, or site is outside the geographic distribution of the species.

Unknown: No focused surveys have been performed in the region, & the species' distribution & habitat are poorly known.

CVMSHCP designations
Yes: Conserved by the CVMSHCP
No: Not Specifically Conserved by the CVMSHCP
Federal designations: (F = federal Endangered Species Act or USFWS designations) END: Federally listed, Endangered
THR: Federally listed, Threatened
CAN: Candidate for Federal listing
MBTA: Migratory Bird Treat
BEPA: Bald Eagle Protection Act (also protects Golden Eagles) BCC: Birds of Conservation Concern
None: No designation
State designations: (C = California Endangered Species Act or CDFG designations) END: State listed, Endangered
THR: State listed, Threatened
CAN: Candidate for State listing
RARE: State listed, Rare
FP: Fully Protected Species
SSC: Species of Special Concern
FGC: Fish and Game Code

Page 902 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 23 WL: Watch List Species
CDFW state rankings are a reflection of the overall condition of an element throughout its California range. The number after the decimal point represents a threat designation attached to the rank:

S1 = Critically Imperiled. Less than (<) 6 Element Occurrences (EOs) OR < 1,000 individuals OR < 2,000 acres S1.1 = very threatened
S1.2 = threatened
S1.3 = no current threats known
S2 = Imperiled. 6-20 EOs OR 1,000-3,000 individuals OR 2,000-10,000 acres S2.1 = very threatened
S2.2 = threatened
S2.3 = no current threats known
S3 = Vulnerable. 21-80 EOs OR 3,000-10,000 individuals OR 10,000-50,000 acres S3.1 = very threatened
S3.2 = threatened
S3.3 = no current threats known
S4 =
S5 = Secure. Common, widespread, and abundant in the state.

SH = All known California sites are historical, not extant ? = Qualifier: Inexact or Uncertain - A question mark represents a rank qualifier, denoting an inexact or uncertain numeric rank.

California Native Plant Society (CNPS) designations:

Primary Categories
LIST 1A: Plants Presumed Extirpated in California and Either Rare or Extinct Elsewhere LIST 1B: Plants Rare, Threatened, or Endangered in California and Elsewhere LIST 2A: Plants Presumed Extirpated in California, But Common Elsewhere LIST 2B: Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere LIST 3: Plants About Which More Information is Needed - A Review List LIST 4: Plants of Limited Distribution - A Watch List
Subdivisions within Categories

0.1: Seriously threatened in California

0.2: Moderately threatened in California

0.3: Not very threatened in California
Western Bat Working Group (WBWG) designations:

The Western Bat Working Group is comprised of agencies, organizations and individuals interested in bat research, management and conservation from the 13 western states and provinces. Its goals are (1) to facilitate communication among interested parties and reduce risks of species decline or extinction; (2) to provide a mechanism by which current information on bat ecology, distribution and research techniques can be readily accessed; and (3) to develop a forum to discuss conservation strategies, provide technical assistance and encourage education programs.

H: High: Species which are imperiled or are at high risk of imperilment based on available information on distribution, status, ecology and known threats.

M: Medium: Species which warrant a medium level of concern and need closer evaluation, more research, and conservation actions of both the species and possible threats. A lack of meaningful information is a major obstacle in adequately assessing these species' status and should be considered a threat.

L: Low: Species for which most of the existing data support stable populations, and for which the potential for major changes in status in the near future is considered unlikely. There may be localized concerns, but the overall status of the species is believed to be secure. Conservation actions would still apply for these bats, but limited resources are best used on High and Medium status species.

P: Periphery: This designation indicates a species on the edge of its range, for which no other designation has been determined.

Page 903 ends

Item 33.

6.0 DISCUSSION
The proposed development of the project site would result in the loss/conversion of 38.8 acres of fallow, vacant, abandoned agricultural lands (date palm farm) and the biological resources, sensitive and otherwise, that occur, or potentially occur, onsite. The likelihood of occurrence for the special status species reported from the vicinity has either been eliminated or significantly reduced by the former conversion of the site to agricultural uses and past farming practices, which included removal of nearly all native vegetation, grading and may have also included use of herbicides and/or pesticides. Small, unmapped, remnant or successional patches of what is best described as quailbush scrub are, however, present intermittently throughout portions of the site, primarily along the western and southern-most areas. Other existing site disturbance (i.e., compaction of soils, offroad vehicular activity, dumping and accumulation of roadside trash) also reduces the likelihood of occurrence of many special status species. Furthermore, the presence of existing adjacent residential development to the north and south of the site and the vegetation removal, active grading of the lands to the west have largely isolated the site from other undeveloped open space. The only undeveloped, vacant open space occurs to the east. The adjacent vacant lands appear to the east appear to have also been rough graded and cleared of most native vegetation in the past. As a result, connectivity of the site to other undeveloped open space has been eliminated, or at least significantly diminished, for many terrestrial species.

The CVMSHCP was designed to streamline the permitting process and to mitigate potential impacts resulting from covered projects and the lawful activities of permittees through payment of the requisite development fee and participation in plan’s requirements. A few species, which are not covered by the CVMSHCP and/or are not yet adequately conserved by the CVMSHCP (e.g., burrowing owl, nesting birds) require additional consideration and/or actions, which are detailed below.

6.1 Discussion of the Special Status Biological Resources Tables A review of the CNDDB, CNPS and IPaC Resources List resulted in a total of 68 special status biological resources that have been reported from the vicinity (Tables 1-7). These include: 33 plants, one vegetation communities, five invertebrates, one fish, four reptiles, 14 birds and 10 mammals. Of these, 59 are considered to be absent from the site due to a combination of factors including a lack of suitable habitat, the elevation of the site outside of elevational parameters and/or in the case of flying animals (birds and bats), they may only occur onsite to forage and will therefore not be directly impacted. The special status biological resources that are considered to be absent from the site include: chaparral sand-verbena (Abronia villosa var. aurita), Borrego milkvetch (Astragalus lentiginosus var. borreganus), Coachella Valley milk-vetch (Astragalus lentiginosus var. coachellae), Lancaster milk-vetch (Astragalus preussii var. laxiflorus), gravel milkvetch (Astragalus subulonum), triple-ribbed milk-vetch (Astragalus tricarinatus), little-leaf elephant

Page 904 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 25 tree (Bursera microphylla), Peninsular spineflower (Chorizanthe leptotheca), glandular ditaxis (Ditaxis claryana), California ditaxis (Ditaxis serrata var. californica), Booth’s evening primrose (Eremothera boothii var. boothii), Joshua Tree poppy (Eschscholtzia androuxii), Arizona spurge (Euphorbia arizonica), flat-seeded spurge (Euphorbia platysperma), pink velvet-mallow (Horsfordia alata), Newberry’s velvet-mallow (Horsfordia newberryi), winged cryptantha (Johnstonella holoptera), southwestern spiny rush (Juncus acutus ssp. leopoldii), Cooper’s rush (Juncus cooperi), Santa Rosa Mountains leptosiphon (Leptosiphon floribundus), Torrey’s box-thorn (Lycium torreyi), California marina (Marina orcuttii var. orcuttii), spear-leaf matelea (Matelea parvifolia), slender cottonheads (Nemacaulis denudate var. gracilis), narrow-leaf sandpaper-plant (Petalonyx linearis), slender-stem bean (Phaseolis filiformis), Deep Canyon snapdragon (Pseudorontium cyanthiferum), desert spike-moss (Selaginella eremophila), Cove’s cassia (Senna covesii), purple stemodia (Stemodia durantifolia), Mecca-aster (Xylorhiza cognata), desert fan palm oasis woodland, Casey’s June beetle (Dinacoma caseyi), monarch butterfly (Danaus plexippus), Coachella giant sand treader cricket (Macrobaenetes valgum), cheeseweed owlfly (Oliarces clara), Algodunes Dunes Euparagia (Euparagia unidentate), desert pupfish (Cyprinodon macularius), northern red diamond rattlesnake (Crotalus ruber ruber), desert tortoise (Gopherus agassizi), flat-tailed horned lizard (Phrynosoma mcallii), Coachella Valley fringe-toed lizard (Uma inornata), nesting Cooper’s hawk (Accipiter cooperii), nesting golden eagle (Aquila chrysaetos), nesting ferruginous hawk (Buteo regalis), nesting southwestern willow flycatcher (Empidonax traillii extimus), nesting prairie falcon (Falco mexicanus), nesting bald eagle (Haliaeetus leucocephalus), nesting vermilion flycatcher (Pyrocephalus rubinus), nesting crissal thrasher (Toxostoma crissale), nesting Le Conte’s thrasher (Toxostoma lecontei), nesting least Bell’s vireo (Vireo bellii pusillus), pallid San Diego pocket mouse (Chaetodipus fallax pallidus), Earthquake Merriam's (Aguanga) kangaroo rat (Dipodomys merriami collinus), roosting western mastiff bat (Eumops perotis californicus), roosting western yellow bat (Lasiurus xanthinus), San Diego desert woodrat (Neotoma lepida intermedia), roosting pocketed free-tailed bat (Nyctinomops femorosaccus) and Peninsular bighorn sheep DPS (Ovis canadensis nelsoni [Pop. 2]). These special status biological resources will not be discussed further.

Three of the remaining nine species are fully (or partially) covered, conserved (or partially conserved) under the CVMSHCP. Participation in the CVMSHPS and payment of the requisite CVMSHCP development fee and participation in the plan is expected to fully mitigate project related impacts (if any) to these species. These include burrowing owl (Athene cunicularia), Palm Springs pocket mouse (Perognathus longimembris bangsi) and Coachella Valley (Palm Springs) round-tailed ground squirrel (Xerospermophilus tereticaudus chlorus). The site is not within CVMSHCP modeled habitat for Coachella Valley milk-vetch, Coachella giant sand-treader cricket, flat-tailed horned lizard, Coachella Valley fringe-toed lizard, Palm Springs pocket mouse and Coachella Valley (Palm Springs) round-tailed ground squirrel. It should be noted that due to the current, highly disturbed condition and/or past agricultural conversion of the site, the likelihood for the occurrence for these species is considered to be very low to low. Regardless of whether

Page 905 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 26 these species occur on the project site or not, participation in the CVMSHCP and payment of the development fee is designed and intended to provide full coverage of potential project-related impacts. One of these species, burrowing owl, however, requires additional considerations and/or actions for full CVMSHCP compliance, which is discussed below. Although desert tortoise is considered to be absent from the site, due to an overall lack of suitable habitat, it will also be discussed below for further clarification.

6.1.1 Species Covered Under the CVMSHCP
The desert tortoise is federally and state listed as threatened by the CDFW and USFWS. Although desert tortoise is covered under the CVMSHCP, further actions are required (where suitable habitat is present) to ensure that take is entirely avoided and/or minimized to the greatest extent possible.

No live desert tortoises or sign thereof (i.e., burrows, scat, tracks, carcass remains, courtship rings, drinking depressions) were observed onsite during the assessment. Furthermore, the site is the location of a former date palm farm/plantation and contains very little remnant and sparse native vegetation (i.e., quailbush scrub). The site is not located within designated critical habitat or CVMSHCP modeled habitat for desert tortoise. For these reasons, habitat suitable for desert tortoise is not present onsite. Additionally, surrounding lands (with the exception of lands to the east) have been developed or are currently in the process of being developed. The land to the east is vacant, undeveloped and disturbed but also does not appear to support habitat suitable for desert tortoise. For these reasons, although a very limited amount of remnant vegetation community (i.e., quailbush scrub) that might otherwise technically be suitable for the desert tortoise, existing site conditions (i.e., nearly 100% conversion to former agricultural practices, existing and past site disturbance, existing adjacent development, etc.) have resulted in an area that is currently unsuitable for this conspicuous and wide-ranging species. For these reasons, it is the opinion of WSP that desert tortoise is absent from the project site and that focused surveys are not warranted or recommended. Project implementation is anticipated to have no impact on the desert tortoise.

The burrowing owl is not listed as threatened or endangered by the USFWS or CDFW. It is, however, managed as a BCC by the USFWS and designated as a SSC by the CDFW. It is also protected from take by the MBTA and FGC. The burrowing owl is a covered species under the CVMSHCP, however the federal permit for the CVMSHCP does not allow take of this species under the MBTA. Any impacts to burrowing owl would be considered significant under the CEQA.

Although no burrowing owls, or sign thereof, were observed or detected onsite during the assessment, potentially suitable habitat (i.e., sparsely vegetated vacant lands; disturbed, remnant and sparse saltbush scrub) is, however, present on the site (Appendix D). California ground squirrel burrows of sufficient size to be suitable for burrowing owl were also observed onsite (Appendix D). The CNDDB reported burrowing owl occurring in the vicinity of the site, including a 2004 record

Page 906 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 27 from 0.5 mile north of the site (CDFW 2024a). For these reasons, WSP considers there to be at least a low potential for the occurrence of burrowing owl onsite. Because the site is not located within or adjacent to a CVMSHCP conservation area, it is the opinion of WSP that at a minimum, a preconstruction (take avoidance) survey for burrowing owl is warranted and is therefore recommended to be conducted immediately prior to initial site clearance to ensure that burrowing owl does not occur on the site and that no direct take of burrowing owl result from project implementation. If burrowing owl is found to be present onsite, scheduled project activities would need to be temporarily halted or delayed and the CVCC and other resource agencies contact for further guidance.

Although there is a very low potential for Palm Springs pocket mouse and/or Coachella Valley (Palm Springs) round-tailed ground squirrel to occur onsite, both are fully covered species under the CVMSHCP, therefore payment of the development fee and participation in the plan is expected to fully mitigate any potential impacts to these species. Neither of these species are listed by USFWS or CDFW but are designated as SSCs by the CDFW. The site is not within CVMSHCP modeled habitat for either of these species.

The remaining six species, which are not covered, or not fully covered, under the CVMSHCP are discussed separately below.

6.1.2 Plant Species Not Covered Under the CVMSHCP
Abram’s spurge is considered to have a very low potential of occurrence as it is associated with sandy soils in Mojavean and Sonoran desert scrub within the elevational parameters of the site and is known from the vicinity. It should be noted that due to the sparse and disturbed nature of the remnant native vegetation remaining and soils onsite, the potential occurrence of this species is considered highly unlikely, however, not impossible. This species was not detected during the field assessment as the assessment was conducted outside of this species blooming period (September-November). Abram’s spurge is not listed as threatened or endangered but is designated as S2 by the CDFW and List 2B.2 by the CNPS meaning that it is considered to be “imperiled” by the CDFW and “rare, threated or endangered in California but more common elsewhere” and “moderately threatened in California”. Abram’s spurge is not covered under the CVMSHCP; thus, development fees and participation offer no mitigation for impacts (if any).

Impacts (if any) to Abrams spurge potentially resulting from the implementation of the proposed project would not likely be considered significant, as there is almost no potential for the occurrence of a significant population of this species onsite. If present, this species would very likely only be in the form of a very limited number of individual plants. The site offers little to no conservation value for this, or any other special status species. For these reasons, unmitigated impacts to Abram’s spurge (if any) would not likely be considered significant under the CEQA. For

Page 907 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 28 these reasons, a focused survey for Abram’s spurge is not considered to be warranted and thus is not recommended for this site.

Ribbed cryptantha is considered to have a very low potential of occurrence onsite as it is associated with sandy soils in Sonoran desert scrub, has been reported from the Cathedral City quadrangle. This species was not detected during the field assessment as the assessment was conducted outside of this species blooming period (February-May), however the sparse, remnant and disturbed quailbush scrub and somewhat sandy soils that are intermittently remnant onsite may nevertheless provide potentially suitable (albeit low quality) habitat for the occurrence of this species. Ribbed cryptantha is not listed as threatened or endangered but is designated as S4 by the CDFW and List 4.3 by the CNPS meaning that it is considered to be “Apparently Secure; but some cause for long-term concern” by the CDFW and “Plant of limited distribution, a Watch List species” and “not very threatened in California”. Ribbed cryptantha is not covered under the CVMSHCP, thus development fees and participation offer no mitigation for impacts to this species.

Impacts (if any) to ribbed cryptantha potentially resulting from the implementation of the proposed project would not likely be considered significant, as there is almost no potential for the occurrence of a significant population onsite. If present, this species would very likely only be in the form of a very limited number of individual plants. The site offers little to no conservation value for this, or any other special status species. Potential impacts to a few individuals (again, in the unlikely event that this species was present) would not be expected to cause the population to drop to a less than self-sustaining level. For these reasons, unmitigated impacts to ribbed cryptantha (if any) would not likely be considered significant under the CEQA. For these reasons, a focused survey for ribbed cryptantha on this site is not considered to be warranted and thus is not recommended.

6.1.3 Wildlife Species Not Covered Under the CVMSHCP
A single Cooper’s hawk was observed onsite during the assessment. This species is not federally or state listed by the USFWS or CDFW. It is, however, managed as a Bird of Conservation Concern (BCC) and protected by Fish and Game Code (FGC) and the MBTA while nesting. Although observed occurring onsite, nesting habitat (i.e., riparian and/or deciduous communities, live oaks, etc.) is not present onsite. For these reasons, despite the detection of Cooper’s hawk onsite, impacts to nesting Cooper’s hawk are not anticipated to occur as a result of project implementation. As a result, surveys for nesting Coopers hawk are not considered to be warranted and are therefore not recommended for this site.

Costa’s hummingbird was observed onsite during the assessment. This species is not federally or state listed by the USFWS or CDFW, however is managed as a BCC and protected by FGC and the MBTA while nesting. Limited nesting habitat for Costa’s hummingbird is present onsite in the blue palo verde trees, Mexican palo verde trees and saltcedar trees intermittently present throughout

Page 908 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 29 the site. In order to avoid potentially impacting nesting Costa’s hummingbird, avoidance of any project-related disturbance (i.e., grading, vegetation removal, landscaping, operation of heavy equipment, construction, etc.) during the nesting season (1 February through 31 August) is recommended. If initial project disturbance cannot be scheduled to occur outside of the nesting season, a clearance survey for nesting Costa’s hummingbird conducted by a qualified ornithologist or biologist immediately prior to onsite disturbance is recommended. If nesting Costa’s hummingbirds are found, 100% avoidance of impacts is required and no work buffer zones would need to be established and observed where no work would be permitted until young have fledged. While there is no established protocol for nest avoidance, when consulted the CDFW generally recommends avoidance buffers of about 100–300 feet for unlisted songbirds.

American badger was not observed or detected on-site during the assessment. This species is not listed as threatened or endangered by either the USFWS or CDFW, however, it is designated as a SSC by the CDFW. American badger is a wide-ranging species and occurs in many habitats from below sea level to alpine habitats in the western and midwestern US, southcentral Canada and much of Mexico. No potential badger burrows were observed on-site, however lands on and adjacent to (to the east of) the site are otherwise potentially suitable. The American badger is known from the vicinity (CDFW 2024a). For these reasons, WSP considers there to be at least a low potential for American badger to occur on-site. Project-related impacts (if any) to American badger would not likely be considered significant under the CEQA as implementation of the proposed project is not anticipated to result in: 1) a substantial reduction of habitat for these this species, 2) a drop in self-sustaining population levels, 3) an elimination of these this species population levels, or 4) substantially reduce these this species numbers or reduce their its geographic range. For these reasons, despite considered to have a low potential of occurrence, presence/absence survey(s) for American badger are not recommended for this site.

6.1.4 Additional Bird Species Protected by the Migratory Bird Treaty Act Excluded from coverage under the CVMSHCP are a variety of common bird species that are protected by the MBTA and FGC. This includes virtually all native migratory and resident bird species, including birds observed onsite and/or known to occur in the vicinity. Avoidance of impacts to these nesting migratory and resident birds is a requirement of the federal permit issued for the CVMSHCP. In order to avoid potentially impacting nesting birds, avoidance of any projectrelated disturbance (i.e., grading, vegetation removal, landscaping, operation of heavy equipment, construction, etc.) during the nesting season (1 February through 31 August) is recommended. If initial project disturbance cannot be scheduled to occur outside of the nesting season, a nesting bird clearance survey conducted by a qualified ornithologist or biologist immediately prior to onsite disturbance is recommended. If nesting birds are found, no work buffer zones would need to be established and observed where no work would be permitted until young have fledged.

Page 909 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 30 While there is no established protocol for nest avoidance, when consulted the CDFW generally recommends avoidance buffers of about 100–300 feet for unlisted songbirds and 500 feet for listed songbirds and raptors.

6.1.5 Jurisdictional Areas
No natural streams, creeks, rivers, lakes, ponds or pools are located on the project site. A manmade, abandoned and dry irrigation pond and old irrigation structures (i.e., presumed derelict pumps, machinery, cement or concrete pipes and linear earthen furrows) are present in the approximate western and southern 2/3 of the site. These irrigation features, including the dry irrigation pond, are not anticipated to fall under the jurisdiction of either the USACE or CDFW.

7.0 CONCLUSION
The City of Coachella is a signatory to the CVMSHCP (CVCC 2024). Therefore, payment of the required development fees for approved projects are anticipated to mitigate the impacts and/or potential impacts (if any) to covered species potentially resulting from the development of the site, whether those covered species occur there or not. Covered species that are considered to have at least some (very low to low) potential of onsite occurrence include: burrowing owl, Palm Springs pocket mouse and Coachella Valley (Palm Springs) round-tailed ground squirrel. Impacts to these species (if any) and their respective habitat, would be fully covered and mitigated under the CVMSHCP with the payment of the requisite development fee and participation in the requirements of the plan.

Because the site contains suitable habitat and burrows suitable for burrowing owl were observed onsite, WSP recommends a preconstruction (take avoidance) survey for burrowing owl to ensure that burrowing owls do not occur onsite immediately prior to initial site clearance and or construction activities. Conducting a preconstruction (take avoidance) survey immediately prior to the commencement of proposed construction would ensure that impacts to burrowing owl do not result from project implementation. If burrowing owls are detected onsite, the CDFW would need to be contacted for guidance. If burrowing owls are detected onsite, relocation may be required, in coordination with the CVCC and CDFW.

Impacts to other bird species protected by the MBTA and FGC, including but not limited to Costa’s hummingbird, mourning dove (Zenaida macroura), killdeer (Charadrius vociferus) and lesser nighthawk (Chordeiles acutipennis), require avoidance. If project activities (i.e., site grading, vegetation removal/trimming, earthwork in undisturbed areas, etc.) are conducted during the nesting season (i.e., generally between 1 February and 31 August), a nesting bird clearance survey is recommended to ensure impacts to nesting birds are avoided. If project activities are conducted outside of the nesting season, a nesting bird clearance survey could likely be avoided. If active

Page 910 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 31 bird nests are found, at any time, proposed project activities would need to be halted and postponed until young have fledged the nest and impacts to nesting birds are entirely avoided.

With participation in and compliance with the requirements of the CVMSHC and implementation of the recommendations above, impacts to special status biological resources are anticipated to be mitigated to a less than significant level.

Page 911 ends

Item 33.

8.0 LITERATURE CITED AND REFERENCES
Association of Environmental Professionals. 2022. 2022 CEQA California Environmental Quality Act Statute and Guidelines. Accessed online at:
https://www.califaep.org/docs/2022_CEQA_Statue_and_Guidelines.pdf California Bird Records Committee. 2024. Official California Checklist. Accessed online at:
http://californiabirds.org/ca_list.asp.

California Department of Fish and Wildlife (CDFW). 2024a. California Natural Diversity Data Base, Rarefind 5. Report for the Indio, La Quinta, Myoma, Valerie and West Berdoo Canyon, Calif. quadrangles. Accessed at: dfg.ca.gov/biogeodata/cnddb/mapsanddata.asp CDFW. 2024b. Special Animals List. January. Periodic publication. Sacramento, CA. Accessed online at: https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=109406&inline=1 CDFW. 2016. Complete List of Amphibian, Reptile, Bird and Mammal Species in California.

Accessed online at: https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=87155&inline California Native Plant Society (CNPS). 2024a. CNPS Rare Plant Inventory. Report for the Indio, La Quinta, Myoma, Valerie and West Berdoo Canyon Calif. quadrangles. Accessed online at:
http://www.rareplants.cnps.org
CNPS. 2024b. California Rare Plant Ranks. Accessed online at: https://www.cnps.org/rareplants/california-rare-plant-ranks Coachella Valley Conservation Commission (CVCC). 2024. Coachella Valley Multiple Species Habitat Conservation Plan. Accessed plan documents online at: cvmshcp.org Holland, R.F. 1986. Preliminary Descriptions of the Terrestrial Natural Communities of California.

Prepared for the California Department of Fish and Game.

Jepson Flora Project (2nd ed.). 2024. Jepson eFlora. Accessed online at: [13 Mar 2024] Riverside County Information Technology. 2024. Map My County. Accessed online at:
http://mmc.rivcoit.org/MMC_Public/Custom/disclaimer/Default.htm Sawyer, J.O., T. Keeler-Wolf, and J.M. Evens. 2009. A manual of California vegetation (2nd ed.).

California Native Plant Society, Sacramento, CA.

USDA, NRCS. 2024. Web Soil Survey. Accessed online at: http://websoilsurvey.nrcs.usda.gov/app/ USDA, NRCS. 2024. The PLANTS Database. National Plant Data Team. Accessed online at:
plants.usda.gov

Page 912 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024
Calhoun Street & Avenue 49 Residential Development Project BRAR Page 33 USFWS. 2024. Migratory Bird Treaty Act of 1918. Accessed online at:
https://www.fws.gov/law/migratory-bird-treaty-act-1918
USGS. 2021. West Berdoo Canyon, Calif. 7.5-Minute Topographic Quadrangle.

USGS. 2015a. Indio, Calif. 7.5-Minute Topographic Quadrangle.

USGS. 2015b. La Quinta, Calif. 7.5-Minute Topographic Quadrangle.

USGS. 2015c. Myoma, Calif. 7.5-Minute Topographic Quadrangle.

USGS. 2015d. Valerie, Calif. 7.5-Minute Topographic Quadrangle.

Page 913 ends

Item 33.

APPENDIX A
SPECIES LIST: VASCULAR PLANTS

Page 914 ends

Item 33.

APPENDIX A
Species List: Vascular Plants
This list reports only plants observed by WSP on the site during the field assessment. Other species may have been overlooked or undetectable due to their growing season. [†= special status species, * = non-native species, sp. = identified only to genus, cf= compares favorably with] Amaranthaceae Amaranth family
Amaranthis cf. albus* tumbleweed*
Asteraceae Sunflower family
Dicoria canescens desert dicoria
Helianthus annuus common sunflower
Lactuca serriola* prickly lettuce*
cf. Lepidospartum squamatum scalebroom
Palafoxia arida Spanish needles
Pluchea sericea arrow-weed
Brassicaceae Mustard family
Brassica tournefortii* Saraha mustard*
Sisymbrium irio* London rocket*
Chenopodaceae Goosefoot family
Atriplex canescens four-wing saltbush
Atriplex lentiformis quailbush
Salsola tragus* Russian thistle*
Fabaceae Pea family
cf. Acacia sp.* Unidentified non-native acacia*
Parkinsonia aculeata* Mexican palo verde*
Parkinsonia florida Mexican palo verde*
Malvaceae Saltcedar family
Malva parviflora* cheeseweed*
Solanaceae Nightshade family
Datura wrightii jimsonweed
Solanum cf. xanti purple nightshade
Tamaricaceae Saltcedar family
Tamarix cf. ramosissima cf. saltcedar
Zygophyllaceace Caltrop family
Tribulus terrestris* Puncture vine*
Arecaceae Palm family
Phoenix dactylifera* (remnant agriculture) date palm (remnant agriculture) Washingtonia sp. (sapling) fan palm (sapling)
Poaceae Grass family
Cynodon dactylon* Bermuda grass*
Schismus cf. barbatus* Mediterranean grass*

Page 915 ends

Item 33.

APPENDIX B
SPECIES LIST: VERTEBRATE ANIMALS

Page 917 ends

Item 33.

APPENDIX B
Species List: Vertebrate Animals
This list reports only the vertebrate animals observed or detected by WSP during the field assessment. Other species may have been overlooked or undetectable due to their activity patterns or weather conditions. [†= special status species, * = non-native species, sp. = identified only to genus, cf = compares favorably with]

VERTEBRATES

REPTILIA REPTILES
Phrynosomatidae Spiny Lizards & Allies
Uta stansburiana side-blotched lizard

AVES BIRDS
Columbidae Pigeons & Doves
Columba livia* rock pigeon*
Streptopelia decaocto* Eurasian collared dove*
Zenaida macroura mourning dove
Trochilidae Hummingbirds
Calypte costae† Costa’s hummingbird†
Accipitridae Hawks, Kites, Eagles & Allies
Accipiter cooperii† Cooper’s hawk†
Buteo lineatus red-shouldered hawk
Buteo jamaicensis red-tailed hawk
Falconidae Caracaras & Falcons
Falco sparverius American kestrel
Remizidae Penduline Tits & Verdins
Auriparus flaviceps verdin
Mimidae Mockingbirds & Thrashers
Mimus polyglottos northern mockingbird
Corvidae Crows & Ravens
Corvus corax common raven
Fringillidae Fringilline & Cardueline Finches
Haemorhous mexicanus house finch
Passerellidae New World Sparrows
Zonotrichia leucophrys white-crowned sparrow

MAMMALIA MAMMALS
Geomyidae Pocket Gophers
Thomomys bottae (burrows & tailings) Botta’s pocket gopher Scuiridae Squirrels
Otospermophilus beecheyi California ground squirrel

Page 918 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024

APPENDIX C

FIGURES

Page 919 ends

Item 33.

Page 920 ends

Item 33.

Page 921 ends

Item 33.

Page 922 ends

Item 33.

Page 923 ends

Item 33.

Page 924 ends

Item 33.

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Calhoun Street & Avenue 49 Residential Development Project March 2024

APPENDIX D

PHOTOGRAPHIC EXHIBITS

Page 925 ends

Item 33.

CALHOUN STREET AND AVENUE 49 RESIDENTIAL DEVELOPMENT PROJECT

PHOTOGRAPHIC LOG
Photo 1: Representative condition of the largely barren, highly disturbed area of the site. Boundary of existing residential development visible to right (perimeter wall). View facing west-southwest from the northeastern corner of the site.

Photo 2: Representative condition of some of the remnant quailbush scrub onsite. Dry, abandoned irrigation pond visible to left. View facing south-southeast from northwestern corner of site.

Page 926 ends

Item 33.

CALHOUN STREET AND AVENUE 49 RESIDENTIAL DEVELOPMENT PROJECT

PHOTOGRAPHIC LOG
Photo 3: Representative condition of a remnant quailbush scrub portion of the site. Dry, abandoned irrigation pond visible in center. View facing east-southeast from northeast corner of site.

Photo 4: Representative condition of the remnant, fallow date palm farm portion of the site. View facing north from vicinity of the southwestern corner of site.

Page 927 ends

Item 33.

CALHOUN STREET AND AVENUE 49 RESIDENTIAL DEVELOPMENT PROJECT

PHOTOGRAPHIC LOG
Photo 5: Representative condition of the remnant, fallow date palm farm portion of the site.

Existing adjacent residential development visible to right. View facing east from a south-central portion of site.

Photo 6: View of highly disturbed portion of site. Off-road vehicular activity and dumping evident.

Calhoun Street and adjacent undeveloped open space visible to right. View facing north from southeastern corner of site.

Page 928 ends

Item 33.

CALHOUN STREET AND AVENUE 49 RESIDENTIAL DEVELOPMENT PROJECT

PHOTOGRAPHIC LOG

Photo 7: Representative example of burrows suitable for burrowing owl present onsite. View facing south from north-central portion of site.

Photo 8: Another representative example of an onsite burrow suitable for burrowing owl. View facing south from north-central potion of site.

Page 929 ends

Item 33.

CALHOUN STREET AND AVENUE 49 RESIDENTIAL DEVELOPMENT PROJECT

PHOTOGRAPHIC LOG
Photo 9: Another representative example of burrow suitable for burrowing owl present onsite.

View facing south from south-central portion of site.

Photo 10: Another representative example of an onsite burrow suitable for burrowing owl. View facing south-southwest from a central location of site.

Page 930 ends

Item 33.

Initial Study/Mitigated Negative Declaration
City of Coachella Calhoun Street Housing Development/TTM 39051 November 2025 Initial Study/Mitigated Negative Declaration C
Appendix C
Calhoun Street Housing Development
Historical/Archaeological Resources Survey Report

CONFIDENTIAL
Available upon request to qualified professionals

Page 931 ends

Item 33.

Initial Study/Mitigated Negative Declaration
City of Coachella Calhoun Street Housing Development/TTM 39051 November 2025 Initial Study/Mitigated Negative Declaration D
Appendix D
Calhoun Street Housing Development Preliminary Hydrology Report

Page 932 ends

Item 33.

Page 933 ends

Item 33.

SW CORNER – CALHOUN ATREET AT 49TH AVENUE

SUBDIVISION

PRELIMINARY HYDROLOGY REPORT
TABLE OF CONTENTS:

I PURPOSE AND SCOPE

II DESIGN METHODOLOGY

III RCFCD SYNTHETIC UNIT HYDROGRAPH CALCULATIONS

IV STREET FLOWRATE CAPACITY
V APPENDIX – REFERENCE MATERIAL

Page 934 ends

Item 33.

I. PURPOSE AND SCOPE
This report was prepared in support of the Calhoun Street at 49th Avenue Subdivision entitlement package submittal. The purpose of this preliminary report is to analyze the existing and proposed drainage patterns, discuss the on-site drainage design and size the proposed on-site drainage facilities to meet the City of Coachella drainage ordinance requirements.

The existing project site is an undeveloped lot at the southwesterly corner of the intersection of Calhoun Street and 49th Avenue in Coachella, CA. The proposed project improvements include the addition of residential lots with an interior access drive serving the lots on a

38.76 acre parcel. The site is bound to the north and east with fully improved public streets, to the east by a residential subdivision under development and to the south by an existing residential subdivision. The project proposes to obtain access to the site from Calhoun Street to the east, and from 49th Avenue to the north. The site will be drain via street surface flow to a series of on-site retention basins designed to capture and and store the storm run off generated during the 100 year design storm event. In general, the existing site is not subject to offsite storm flows.

II. DESIGN METHODOLOGY AND CALCULATIONS
The Calhoun Street project will provide five (5) on-site storm drain infiltration retention basin systems designed to capture and store the runoff generated from the “worst case” 100 year design storm based on City of Coachella requirements. The five retention basins have a combined volume capacity designed to store the runoff generated on-site during the 100 year design storm as well as runoff from the Calhoun Street half street project frontage and the 49 Avenue full width street frontage within the public right of way. The low point on the existing project site occurs on the project’s easterly frontage. Runoff that exceeds the capacity of the on-site retention basin storage systems in an emergency overflow condition is designed to overflow onto interior surface streets and exit via surface flow onto Calhoun Street following the historical drainage pattern toward the south.

Riverside County Flood Control District Synthetic Unit Hydrograph methods are used to quantify the runoff volume generated and stored on-site during the 100 year “worst case” design storm return period. The program data and results prepared for this project are included in the Appendix of this report. The program model typically accounts for the volume of runoff lost due to infiltration in the basins and the allowable design retention basin infiltration rate of 10 gal./s.f./day (0.67 in/hr) established by City of Coachella will be applied over the surface area of the basin bottoms. The combined capacity of all five on-site basins will be compared to the total design runoff volume calculated for the Calhoun Street project to show that runoff generated during the 100 year design storm can be stored within the basins at a depth not to exceed 3ft and the runoff generated during the 10 year storm event can be stored within the on-site basins at a depth not to exceed 1.5 feet in accordance with City of Coachella retention basin criteria.

City of Coachella requires that runoff water stored on-site must be evacuated completely via infiltration within a period of 72 hours in order to comply with vector control concerns. In order to help facilitate this requirement, City of Coachella has limited the maximum depth of

Page 935 ends

Item 33.
stored runoff within any basin to 1.5’ during the 10 year storm event and the maximum depth of any on-site retention basin must not exceed 3.5 feet.

On-site street curb and gutter systems will be designed to convey runoff to the on-site retention basin systems via surface flow. The project site will be designed to ensure that surface runoff generated during the 10 year storm is contained below the top of the proposed street curbs and runoff generated during the 100 year storm event is contained within street right of way. Street flowrates (Q) will be calculated by applying the Rational Method using CivilD software.

DESIGN CRITERIA
The following Riverside County Flood Control District (RCFCD) parameters were used in the preparation of the analyses:

 2 year – 1 hour Precipitation 0.35” (NOAA)
 10 year – 1 hour Precipitation 0.70” (NOAA)
 10 year – 3 hour Precipitation 1.04” (NOAA)
 10 year – 6 hour Precipitation 1.36” (NOAA)
 10 year – 24 hour Precipitation 1.04” (NOAA)
 100 year – 1 hour Precipitation 1.37” (NOAA)
 100 year – 3 hour Precipitation 2.12” (NOAA)
 100 year – 6 hour Precipitation 2.78” (NOAA)
 100 year – 24 hour Precipitation 4.47” (NOAA)
 Hydrologic Soil Type “B” US Dept. of Agriculture, SCS  Runoff Index Number 56 (RCFC&WCD Plate E-6.1)
 Assumed Design Percolation Rate 0.67 in/hr
 Slope Intensity Duration Curve 0.59 (RCFC&WCD Plate D-4.6)

Page 936 ends

Item 33.

III RCFCD SYNTHETIC UNIT HYDROGRAPH CALCULATED RETENTION

VOLUMES

SUBAREA
100 YR.

VOLUME

REQUIRED
(CU.FT.)
BASIN
VOLUME

PROVIDED
(CU.FT.)
100 YR.

BASIN

STORAGE
DEPTH
10 YR. BASIN

STORAGE
DEPTH
1 9,580 12,250 2.45 0.72
2 57,661 64,193 3.19’ 0.99’
3 53,709 62,528 3.07’ 0.94’
4 51,654 57,236 3.20 0.99
5 41,999 72,828 2.14’ 0.54

Page 937 ends

Item 33.
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
51 52
53 54
55 56
AB C D

RCFCD SYNTHETIC UNIT HYDROGRAPH

DATA INPUT SHEET
WORKSHEET PREPARED BY: JAMES R. BAZUA, P.E.

PROJECT NAME CALHOUN AT AVENUE 49 - 10 YEAR EVENT
JOB #
CONCENTRATION POINT DESIGNATION 1
AREA DESIGNATION SUBAREA 1

TRIBUTARY AREAS ACRES

COMMERCIAL
PAVING/HARDSCAPE 1.18
SF - 1 ACRE
SF - 1/2 ACRE
SF - 1/4 ACRE

MF - CONDOMINIUMS

MF - APARTMENTS

MOBILE HOME PARK
LANDSCAPING 0.83

RETENTION BASIN

GOLF COURSE

MOUNTAINOUS
LOW LOSS RATE (PERCENT) 90%
LENGTH OF WATERCOURSE (L) 1000
LENGTH TO POINT OPPOSITE CENTROID (Lca) 15
ELEVATION OF HEADWATER 471.5
ELEVATION OF CONCENTRATION POINT 468.8
AVERAGE MANNINGS 'N' VALUE 0.02
STORM FREQUENCY (YEAR) 100

POINT RAIN
3-HOUR 1.04
6-HOUR 1.36
24-HOUR 2.23
BASIN CHARACTERISTICS: ELEVATION AREA
465 3025
466 3700
467 4430
468 5215
468.5 5630
PERCOLATION RATE (in/hr) 0.67

DRYWELL DATA

NUMBER USED
PERCOLATION RATE (cfs)

Page 938 ends

Coachella City CouncilJanuary 28, 2026

Coachella City Council
January 28, 2026