853194745A — Santee City Council, February 26, 2025 (part 1 of 3)

VOLUME III
Santee Town Center Specific
Plan Update
Draft Environmental Impact Report
Appendix A-H
SCH# 2023090032
August 2024 February 2025
Prepared for:

City of Santee Planning &
Building Department
10601 Magnolia Ave.

Santee, CA 92071
Prepared by:

HELIX Environmental Planning, Inc.
7578 El Cajon Boulevard
La Mesa, CA 91942
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Appendix A
Notice of Preparation (NOP) and
NOP Comments
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NOTICE OF PREPARATION
of a Draft Program Environmental Impact Report
Notice of Public Scoping Meeting
Project: Santee Town Center Specific Plan Update
Project Case Files: General Plan Amendment GPA2023-1, Town Center Specific Plan Amendment TCSPA2023-1, Rezone 2023-1, Zoning Ordinance Amendment ZA2023-2, Environmental Impact Report AEIS2023-2
Project Proponent: City of Santee
Project Location: Town Center, Arts & Entertainment Overlay District, Strategic Housing Element Sites 16A, 16B, 20A, 20B (refer to Table 1 and Figure 2) Environmental Impact Report: The City of Santee is preparing a Program Environmental Impact Report (EIR) addressing a comprehensive update to the City of Santee Town Center Specific Plan (TCSP), including updates to the Santee Arts & Entertainment Overlay District (AEOD), and conceptual planning and objective design standards for four large strategic housing sites, which were analyzed programmatically within the Sixth Cycle Housing Element EIR. The City will be the lead agency under the California Environmental Quality Act (CEQA) for the project. This Notice of Preparation (NOP) describes the proposed project that will be analyzed in the Program EIR and identifies areas of probable environmental effects of the project.

As specified in the CEQA Guidelines, the Notice of Preparation will be circulated for a 30- day review period. Agencies, organizations, and interested members of the public are invited to provide input on the scope of the environmental analysis. If you are a responsible or trustee agency, the views of your agency are requested as to the scope and content of the environmental information which is germane to your agency’s statutory responsibilities in connection with the proposed project. In the event that no response or well justified request for additional time is received by any responsible agency or trustee agency by the end of the review period, we presume that these agencies have no response. Comments may be submitted in writing during the review period and addressed to:

Michael Coyne, Principal Planner
City of Santee Planning & Building Department
10601 Magnolia Avenue
Santee, CA 92071
Telephone: (619) 258-4100 ext. 160
Email: [email protected]

The Notice of Preparation comment period commences September 1, 2023 and closes at 5:00 p.m. on October 16, 2023. All comments concerning this environmental document must be submitted in writing to Michael Coyne, Principal Planner, prior to the close of the public comment period as noted above. Please indicate a contact person in your comment. The City will consider all written comments received during the noticed public review period prior to approving the project.

Public Scoping Meeting:

The City will hold a scoping meeting to provide an opportunity for agency staff and interested members of the public to submit comments, either written or verbal, on the scope of the environmental issues to be addressed in the Program EIR. The scoping meeting will be held on September 7, 2023 between 3:00 p.m. and 5:00 p.m. at the City of Santee, Building 5, 10601 Magnolia Avenue, Santee, CA 92071.

Project Background:

In October 1986, the City of Santee completed a focused effort to plan for the development of property in its geographic core known as the Town Center Specific Plan (TCSP). The TCSP establishes guidelines for creating a people- and transit-oriented hub for commercial, civic, and residential uses along the San Diego River. Since its adoption, the TCSP has been amended 16 times, with the latest amendment, Amendment 19-1 adopted in December 2019, establishing the AEOD. The primary goal of the AEOD is to support tourism in the City and attract commercial, educational, and recreational uses that beautify and enliven portions of the Town Center.

More recently, on July 14, 2021, the City Council adopted the Sixth Cycle Housing Element, which included within its Sites Inventory four strategic housing sites (Sites 16A, 16B, 20A, 20B) within the TCSP area that were identified as sites intended to be developed with transit-oriented multifamily residential uses that support the inclusion of affordable housing. The City has also recently adopted a few other plans that are relevant to ongoing planning in the TCSP area, including the Sustainable Santee Plan, the City of Santee Mobility Element, and the Active Santee Plan.

Proposed Project:

The proposed project consists of a comprehensive update to the TCSP to modify or establish new land use designations, land uses, development standards, and conceptual guidelines that would apply to future development within the TCSP area. As part of this effort, the City of Santee would also make modifications to the Arts & Entertainment District and provide objective design standards and conceptual designs for strategic Housing Element sites within the TCSP. See Figure 1, Regional Location, and Figure 2, Project Boundaries, for illustrations of the location and regional context of the project. A more detailed description of each of the proposed project components is described below.

Introduction, Land Use and Urban Form, Mobility and Beautification, Infrastructure and Public Facilities, Implementation, and Administration. Text and concepts that remain relevant to the vision and goals of the TCSP would be maintained and incorporated into the updated TCSP document format and structure.

As part of the TCSP, the circulation network exhibits of the plan would be updated, including the bicycle, pedestrian, and transit network maps, and street cross sections.

The TCSP would include concepts for key improvements in the public right-of-way to enhance circulation within the project area. The TCSP would incorporate concepts to illustrate wayfinding and branding signage at important locations within the public rightof-way and public trails, such as signs tailored for pedestrian, bicyclists and transit users, signs designed to direct vehicular traffic and refer to parking areas, as well as iconic gateway structures that enhance the identity and sense of place in the project area.

The TCSP would also outline fundamental elements for the administration of the plan, such as the process for future specific plan amendments, and the development review, permit, and approval process for projects within the TCSP area. Additionally, the TCSP would address the relationship between the TCSP document and other planning documents, as well as consistency with the General Plan. The TCSP would also include a section describing how to use the document and guide reviewers and applicants through the path for review and approval of proposals within the TCSP area.

Finally, the TCSP amendment would also incorporate an adjustment to the Specific Plan boundaries to include additional sites such as the shopping center located at the northwest corner of Mission Gorge Road and Cuyamaca Road, and the shopping center located west of Cuyamaca Road, between Mission Creek Drive and River Park Drive. As a result of the boundary adjustment, the TCSP area would expand from 609.70 to 651.42 acres1. Increasing a total of 41.72 acres.

Arts & Entertainment Overlay District
The TCSP would include an amendment to the AEOD. As discussed above, the City adopted the AEOD in 2019, with the intent of encouraging the development of an Arts & Entertainment district within a significant portion of the TCSP. The update would 1 The original Town Center Specific Plan published in 1986 cited the TCSP area as 706 acres, however amendments to the plan have reduced the Specific Plan total acreage. Additionally, the original acreage was based on an estimate, due to improved geographic information software over time, the number of reported acres in the TCSP has changed as the accuracy of the data has increased.

incorporate the vision, guidelines, and development standards specific to the AEOD as a subsection of the Land Use and Urban Form chapter of the TCSP. This section of the TCSP would also incorporate tailored land use designations that support uses related to art and culture, entertainment, commercial recreation, visitor, and civic uses.

The update to the vision and development standards for the AEOD would aim to enhance connections to the San Diego River, strengthen the sense of place by creating an attraction for residents and visitors to gather, and public space concepts that would incorporate streetscape concepts with features such as landscaping, water elements, shade, lighting, and wayfinding. The concepts would also aim to create a central destination within the TCSP area, with a strong emphasis on connecting Arts & Entertainment to the natural environment.

Additionally, the update would incorporate an adjustment to the AEOD boundaries to include additional sites such as the open space designated areas along the San Diego River, areas north of the San Diego River, south of Riverwalk Drive, west of River Park Drive, east of Cuyamaca Street, and west of Magnolia Avenue. As a result of the boundary adjustments, the AEOD area would expand from 172.492 to 341.72 acres, increasing by a total of 169.23 acres. See Figures 2 and 3 for more details.

Four Strategic Housing Element Sites (2021-2029 Sixth Cycle) The City Council adopted the Housing Element (2021-2029 Sixth Cycle) on May 11, 2022.

The Housing Element (HE) was prepared in compliance with State housing law as determined by the California Department of Housing and Community Development (HCD) on December 6, 2022. The HE included a Sites Inventory map and table (figure C-1 and table C-1 of the HE), that included a series of sites that are currently undeveloped or underutilized. The identified sites provide an opportunity for the City to meet its Regional Housing Needs Allocation (RHNA) housing production goals. Four strategic undeveloped housing sites identified in the Sites Inventory are located within the boundary of the TCSP and the AEOD. The sites are identified as 16A, 16B, 20A, and 20B. Sites 16A and 16B are undeveloped sites located just north of Mission Gorge Road and east of Riverview Parkway in the Santee Town Center. The area surrounding the sites is primarily developed with Santee Trolley Square immediately west of the site, the Las Colinas Detention Facility to the east, and open space associated with the San Diego River to the north. A portion of Site 16A is located within the Airport Safety Zone 4 as designated in the Gillespie Field Land Use Compatibility Plan (ALUCP). Sites 20A and 20B are undeveloped sites located just west of Magnolia Avenue, south of Riverview Parkway, and east of Edgemoor Drive. Sites 20A and 20B surround the Historic Edgemoor Polo or Dairy Barn. To the west of Site 20A is the Las Colinas Detention Facility, to the east is a gated 55+ manufactured home community. Site 20B is bordered by single-family residential homes to the south, multifamily residential to the east, and Las Colinas and 2 The 2019 Art and Entertainment Overlay District refers to 155 acres; however, current GIS data shows 172 acres for the same area.

Riverview Office Park to the west. A portion of the site is located within the Gillespie Field ALUCP Airport Safety Zone 4. The sites are proposed to be developed with residential uses.

The HE Implementation Program identified specific sites that would require to be rezoned to allow for residential uses, and/or to allow for the estimated housing capacity included in the HE. The Housing Element proposed zoning changes for sites 16A, 16B, 20A, and 20B. As part of the realization of the Housing Element Implementation Program, the City analyzed and approved the re-zone of the four above-mentioned sites and adopted the rezoning on October 26, 2022. The zoning for sites 16A, 16B, 20A, and 20B as a result of the HE Implementation Program can be found in Table 1, Housing Element Sites Zoning.

Table 1, Housing Element Sites Zoning
Site Size
(acres)
Current Zoning Current Density
16A 11.11 Residential (TC-R-30) Minimum of 30 du/ac, Maximum of 36 du/ac 16B 8.61 Residential (TC-R-14) Minimum of 14 du/ac, Maximum of 22 du/ac 20A 7.75 Residential (TC-R-22) Minimum of 22 du/ac, Maximum of 30 du/ac 20B 10.00 Residential (TC-R-30) Minimum of 30 du/ac, Maximum of 36 du/ac To further advance the housing production in Santee, City staff applied for a Housing Acceleration Program (HAP) grant from the San Diego Association of Governments (SANDAG). The grant application was awarded to the City. The HAP grant provides funding for project-level analysis of HE sites 16A, 16B, 20A, and 20B. The amended TCSP will include graphics and data that illustrate site planning and development concepts for each of these sites based on the maximum allowable density allowed by zoning. The EIR will analyze these sites at a project-level of detail.

Discretionary Actions: Discretionary actions associated with the project include a General Plan Amendment GPA2023-1, Town Center Specific Plan Amendment TCSPA2023-1, Rezone 2023-1, Zoning Ordinance Amendment ZA2023-2, Environmental Impact Report AEIS2023-2.

Project Alternatives: The EIR will evaluate a reasonable range of project alternatives, including the required No Project Alternative.

Potential Environmental Effects: The EIR will describe the reasonably foreseeable and potentially significant adverse effects of the proposed project (both direct and indirect) at a programmatic level for the TCSP and the AEOD and at a project level for the four Housing Sites. The EIR also will evaluate the cumulative impacts of the project when considered in conjunction with other related past, present, and reasonably foreseeable future projects. The City anticipates that the proposed project could result in potentially

significant environmental impacts in the following topic areas, which will be further evaluated in the EIR:
• Aesthetics/Visual
• Agriculture and Forestry Resources
• Air Quality
• Biological Resources
• Cultural Resources
• Energy
• Geology and Soils
• Greenhouse Gas Emissions
• Hazards and Hazardous Materials
• Hydrology and Water Quality
• Land Use and Planning
• Noise
• Population and Housing
• Public Services
• Recreation
• Transportation
• Tribal Cultural Resources
• Utilities and Service Systems
• Wildfire
• Cumulative Effects
• Growth Inducing Effects
As environmental documentation for this project is completed, it will be available for review at the City’s Planning & Building Department located in Building 4 at Santee City Hall, 10601 Magnolia Avenue, Santee, CA 92071, and online at:
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Figure 1
Regional Location
I:\PROJECTS\M\MW_SteeleGroup_01427\00004_SanteeHAP\Map\NOP\NOP.aprx Fig1_Regional : 01427.4.1 : 7/5/2023 - SAB Source: Base Map Layers (SanGIS, 2016)
Santee HAP

DISTRICT 11
4050 TAYLOR STREET, MS-240
SAN DIEGO, CA 92110
(619) 709-5152 | FAX (619) 688-4299 TTY 711
www.dot.ca.gov
October 12, 2023
11-SD-52, 67
PM VAR
Santee Town Center Specific Plan Update
NOP/SCH# 2023090032
Mr. Michael Coyne
Principal Planner
City of Santee
Department of Development Services
10601 Magnolia Avenue
Santee, CA 92701
Dear Mr. Coyne:

Thank you for including the California Department of Transportation (Caltrans) in the Notice of Preparation (NOP)for a Draft Program Environmental Impact Report (Draft PEIR) for the Town Center Specific Plan Update, located near State Routes 52 (SR-52) and 67 (SR-67), in the city of Santee. The mission of Caltrans is to provide a safe and reliable transportation network that serves all people and respects the environment. The Local Development Review (LDR) Program reviews land use projects and plans to ensure consistency with Caltrans’ mission and state planning priorities.

Safety is one of Caltrans’ strategic goals. Caltrans strives to make the year 2050 the first year without a single death or serious injury on California’s roads. We are striving for more equitable outcomes for the transportation network’s diverse users. To achieve these ambitious goals, we will pursue meaningful collaboration with our partners. We encourage the implementation of new technologies, innovations, and best practices that will enhance the safety on the transportation network. These pursuits are both ambitious and urgent, and their accomplishment involves a focused departure from the status quo as we continue to institutionalize safety in all our work.

Caltrans is committed to prioritizing projects that are equitable and provide meaningful benefits to historically underserved communities, to ultimately improve transportation accessibility and quality of life for people in the communities we serve.

We look forward to working with the City of Santee in areas where the City and Caltrans have joint jurisdiction to improve the transportation network and connections “Provide a safe and reliable transportation network that serves all people and respects the environment”

Mr. Michael Coyne, Principal Planner
October 12, 2023

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between various modes of travel, with the goal of improving the experience of those who use the transportation system.

Caltrans has the following comments:

Traffic Impact Study
• A Vehicle Miles of Travel (VMT) based Traffic Impact Study (TIS) should be provided for this project. Please use the Governor’s Office of Planning and Research Guidance to identify VMT related impacts.1
• The TIS may also need to identify the proposed project’s near-term and longterm safety or operational issues, on or adjacent any existing or proposed State facilities.
• The Draft PEIR should include language that any proposed developments will complete a Local Mobility Analysis as required per the City of Santee regulations.

State Route Design Corridor
There are several Caltrans improvements to SR-52 west of the Town Center that are currently in the planning stage:
• Convert the existing two-way bike path on the north side of SR-52 to a 4.3-mile long westbound truck climbing lane from Mast Boulevard to the summit. • Restripe westbound SR-52 from 2 lanes to 3 lanes from SR-125 to Mast Boulevard. • Relocate the existing 4.6-mile long two-way bike path on the north side of SR-52 to the south side including one 10-foot wide light weight cantilevered separated bike path on two existing bridges, respectively.
• Restripe eastbound SR-52 from 2 lanes to 3 lanes from Mast Boulevard to east of the San Diego River Bridge, eliminating the lane drop at Mast Boulevard and maintaining three eastbound through lanes to SR-125.
• Widen the westbound on-ramp from Mast Boulevard to SR-52 to a two-lane ramp.

Another feature being considered is to convert the westbound #1 lane to a High Occupancy Vehicle (HOV) or managed lane and these alternatives will be further studied.
1 California Governor's Office of Planning and Research (OPR) 2018. "Technical Advisory on Evaluating Transportation Impacts in CEQA." https://opr.ca.gov/docs/20190122-743_Technical_Advisory.pdf “Provide a safe and reliable transportation network that serves all people and respects the environment”

Mr. Michael Coyne, Principal Planner
October 12, 2023

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There are several Caltrans improvements to SR-67 east of the Town Center that are currently in the planning stage:
• Modifications to the SR-67 and Riverford Road interchange are necessary to improve local and regional traffic, facilitate transit services, and improve trail, bicycle and pedestrian connectivity.
• The widening of the existing Bradley Avenue bridge from a two-lane structure to six lanes with new shoulders, and sidewalks.
• The SR-67 Highway Improvements Project proposes operational and safety improvements to travel lanes, shoulders, medians, traffic signals, and emergency access lanes in San Diego County through the City of Poway and unincorporated communities from Mapleview Street in Lakeside to Highland Valley/Dye Road in Ramona.

Complete Streets and Mobility Network
Caltrans views all transportation improvements as opportunities to improve safety, access, and mobility for all travelers in California and recognizes bicycle, pedestrian and transit modes as integral elements of the transportation network. Caltrans supports improved transit accommodation through the provision of Park and Ride facilities, improved bicycle and pedestrian access and safety improvements, signal prioritization for transit, bus on shoulders, ramp improvements, or other enhancements that promotes a complete and integrated transportation network. Early coordination with Caltrans, in locations that may affect both Caltrans and the City of Santee, is encouraged.

To reduce greenhouse gas emissions and achieve California’s Climate Change targets, Caltrans is implementing Complete Streets and Climate Change policies into State Highway Operations and Protection Program (SHOPP) projects to meet multimodal mobility needs. Caltrans looks forward to working with the City to evaluate potential Complete Streets projects.

Bicycle, pedestrian, and public transit access during construction is important.

Mitigation to maintain bicycle, pedestrian, and public transit access during construction is in accordance with Caltrans’ goals and policies.

Land Use and Smart Growth
Caltrans recognizes there is a strong link between transportation and land use.

Development can have a significant impact on traffic and congestion on State transportation facilities. In particular, the pattern of land use can affect both local vehicle miles traveled and the number of trips. Caltrans supports collaboration with “Provide a safe and reliable transportation network that serves all people and respects the environment”

Mr. Michael Coyne, Principal Planner
October 12, 2023

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local agencies to work towards a safe, functional, interconnected, multi-modal transportation network integrated through applicable “smart growth” type land use planning and policies.

The City should continue to coordinate with Caltrans to implement necessary improvements at intersections and interchanges where the agencies have joint jurisdiction.

Climate Action
Caltrans supports the City's efforts to reduce GHG emissions as per SB 32, SB 743, SB 375, SB 379 and various Executive orders. As an environmentally conscious agency, Caltrans strives to work with partner agencies in order to reduce GHG emissions and adapt to the impacts of climate change on the state highway system. Caltrans looks forward to reviewing the proposed policies, plans and projects contained in the future Draft PEIR. For additional information regarding Caltrans’ policies, plans, guidance and strategies related to climate change impacts please refer to documents such as, but not limited to, Caltrans Climate Change Vulnerability Assessment, Caltrans Climate Change Adaptation Priorities Report, Caltrans Climate Change Adaptation Strategies Report, Caltrans Climate Change Communication Guide and Caltrans GHG Emissions Mitigation Report.

System Planning
The Coast, Canyons, and Trails Comprehensive Multimodal Corridor Plan (CMCP) should be reviewed and incorporated in the development of the Santee Town Center Specific Plan Update. The final document and appendices are located here: SANDAG - SR 52 Coast, Canyons, and Trails. Particular attention should be given to the transportation solution strategies listed in Appendix D. There are numerous strategies listed in the document, including:
• Mobility hub enhancements at Santee Town Center
o Microtransit (Strategy ID TM06)
o EV charging stations (MH16)
o Lockers for safe retail deliveries (MH32)
o Multilingual wayfinding, real-time information, and interactive kiosks (MH39)
o Parking for shared rideables (MH47)
o Pedestrian enhancements within ½ mile of a major mobility hub node:
complete missing sidewalks and signalized intersection crossing enhancements such as continental crosswalks, advance stop bars, pedestrian countdown signal heads, LPIs, and signage (MH56) “Provide a safe and reliable transportation network that serves all people and respects the environment”

Mr. Michael Coyne, Principal Planner
October 12, 2023

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• Flexible fleet enhancements at Santee Transit Center
o Rideshare services (FF18)
o Mobile retail services (FF19)
o Micromobility shared rideables (FF20)
• Bus route improvements
o Route 832 – Santee Town Center to North Santee (TR24) o Route 834 – Santee Town Center to West Santee (TR25)
• New rapid bus routes
o Rapid 870 – El Cajon to Torrey Pines via Santee (TR15, TR16, TR17) o Rapid 880 – El Cajon to UC San Diego via Santee (TR18, TR19) o Rapid 890 – El Cajon to Sorrento Mesa via Santee (TR20, TR21, TR22) • Active transportation
o Class I bike paths along the San Diego River (CC122), Fanita Pkwy (CC134), and portions of Mission Gorge Rd (CC123) and Mast Blvd (CC135)
o San Diego River Trail Grade Separated (Class I) Crossing (CC136) o Class II bike lanes along arterials such as Cottonwood Ave. (CC132), Magnolia Ave (CC124), and portions of Prospect Ave. (CC131) o Class III bike route along Mission Greens Road (CC133) o Pedestrian hybrid beacons at the San Diego River and Cuyamaca St (CC158), Forester Creek Trail and Mission Gorge Road (CC159), and Forester Creek Trail and Prospect Ave. (CC160)
• Intelligent Transportation Systems (ITS) improvements o Mission Gorge Road and Cuyamaca Street - Convert general purpose lanes or shoulder/parking to flex lanes to be dynamically reserved for transit, shuttles, rideshare, carshare, and/or electric vehicles to relieve congestion and improve travel times (CC19, NO37, CC20, NO38) o Mast Blvd, Mission Gorge Road, and Magnolia Avenue - Install smart intersection technology to give priority to transit, freight, and emergency vehicles and reduce intersection conflicts between vehicles, pedestrians, and cyclists, improving safety for vulnerable road users (NO05, NO06, NO17)
o Physical signage and ITS infrastructure in Santee should be implemented to support flexible curb usage and accommodate for changing demand (NO25)
“Provide a safe and reliable transportation network that serves all people and respects the environment”

Mr. Michael Coyne, Principal Planner
October 12, 2023

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The San Vicente CMCP study area includes a portion of the City of Santee, but the CMCP document does not feature any projects relevant to the Santee Town Center Specific Plan. The final document and appendices are located here: SANDAG - SR 67 San Vicente.

The SANDAG 2021 Regional Plan (available here: SANDAG - Final 2021 Regional Plan) recommends the following projects near Santee Town Center:
• San Diego River Trail - Mast Park to Lakeside baseball park (Project ID AT061) • Complete Corridors Regional Arterials on Mast Blvd and Magnolia Ave • Rapid 870 – El Cajon to UTC via Santee, SR 52, I-805 (TL50) • Rapid 890 – El Cajon to Sorrento Mesa via Santee, SR 52, I-805 (TL51) • LRT 530 – Green Line Santee to Downtown; double/third tracking and grade separations (TL16, TL17)
Environmental
Caltrans welcomes the opportunity to be a Responsible Agency under the California Environmental Quality Act (CEQA), as we have some discretionary authority of a portion of the project that is in Caltrans’ Right-of-Way (R/W) through the form of an encroachment permit process. We look forward to the coordination of our efforts to ensure that Caltrans can adopt the alternative and/or mitigation measure for our R/W. We would appreciate meeting with you to discuss the elements of the Environmental Document that Caltrans will use for our subsequent environmental compliance.

An encroachment permit will be required for any work within the Caltrans’ R/W prior to construction. As part of the encroachment permit process, the applicant must provide approved final environmental documents for this project, corresponding technical studies, and necessary regulatory and resource agency permits. Specifically, CEQA determination or exemption. The supporting documents must address all environmental impacts within the Caltrans’ R/W and address any impacts from avoidance and/or mitigation measures.

We recommend that this project specifically identifies and assesses potential impacts caused by the project or impacts from mitigation efforts that occur within Caltrans’ R/W that includes impacts to the natural environment, infrastructure including but not limited to highways, roadways, structures, intelligent transportation systems elements, on-ramps and off-ramps, and appurtenant features including but not limited to fencing, lighting, signage, drainage, guardrail, slopes and landscaping. Caltrans is interested in any additional mitigation measures identified for the project’s draft Environmental Document.
“Provide a safe and reliable transportation network that serves all people and respects the environment”

Mr. Michael Coyne, Principal Planner
October 12, 2023

Page 7 ends

Should future projects based upon the changes enacted from the General Plan have elements and/or mitigation measures that affect Caltrans’ R/W, Caltrans would welcome the opportunity to be a Responsible Agency under CEQA.

Broadband
Caltrans recognizes that teleworking and remote learning lessen the impacts of traffic on our roadways and surrounding communities. This reduces the amount of VMT and decreases the amount of greenhouse gas (GHG) emissions and other pollutants. The availability of affordable and reliable, high-speed broadband is a key component in supporting travel demand management and reaching the state’s transportation and climate action goals.

Right-of-Way
• Per Business and Profession Code 8771, perpetuation of survey monuments by a licensed land surveyor is required, if they are being destroyed by any construction. • Any work performed within Caltrans’ R/W will require discretionary review and approval by Caltrans and an encroachment permit will be required for any work within the Caltrans’ R/W prior to construction.

If you have any questions, please contact Mark McCumsey at (619) 985-4957 or by email at [email protected].

Sincerely,
Maurice A. Eaton

MAURICE EATON
Branch Chief
Local Development and Intergovernmental Review
“Provide a safe and reliable transportation network that serves all people and respects the environment” DocuSign Envelope ID: 6903A5A6-5F8F-4640-BAEC-2C6A73BC59A9 In Reply Refer To:

FWS/CDFW-2023-0128792-CEQA_EIR-SD
October 16, 2023
Sent Electronically
Michael Coyne Oct 16 2023 Principal Planner
City of Santee
10601 Magnolia Avenue
Santee, California 92071
Subject: Comments on the Notice of Preparation of an Environmental Impact Report for the Santee Town Center Specific Plan Update (SCH #2023090032) Dear Michael Coyne:

The U.S. Fish and Wildlife Service (Service) and the California Department of Fish and Wildlife (Department), hereafter collectively referred to as the Wildlife Agencies, have reviewed the above-referenced Notice of Preparation (NOP) for the Santee Town Center Specific Plan Update (Project) dated September 5, 2023. Thank you for the opportunity to provide comments and recommendations regarding those activities involved in the Project that may affect biological resources.

The primary concern and mandate of the Service is the protection of fish and wildlife resources and their habitats. The Service has legal responsibility for the welfare of migratory birds, anadromous fish, and threatened and endangered animals and plants occurring in the United States. The Service is also responsible for administering the Federal Endangered Species Act of 1973 (Act), as amended (16 U.S.C. 1531 et seq.), including habitat conservation plans (HCP) developed under section 10(a)(l) of the Act. The Department is a Trustee Agency with jurisdiction over natural resources affected by the project [California Environmental Quality Act (CEQA) Guidelines §15386] and is a Responsible Agency under CEQA Guidelines Section 15381 over those aspects of the proposed project that come under the purview of the California Endangered Species Act (CESA; Fish and Game Code §2050 et seq.) and Fish and Game Code Section 1600 et seq. The Department also administers the Natural Community Conservation Planning (NCCP) Program, a California regional habitat conservation planning program. The City of Santee (City) participates in the NCCP program through their enrollment in the County of San Diego Subregional Multiple Species Conservation Program (MSCP) and the development of their MSCP Subarea Plan (subarea plan).

The City is preparing a Program Environmental Impact Report (EIR) addressing a comprehensive update to the Santee Town Center Specific Plan (TCSP). Proposed updates to the TCSP would modify or establish new land use designations, land uses, development standards, and conceptual 2 DocuSign Envelope ID: 6903A5A6-5F8F-4640-BAEC-2C6A73BC59A9 Michael Coyne (FWS/CDFW-2023-0128792-CEQA_EIR-SD)
guidelines for future development in a core area of the City along the San Diego River. The update is also anticipated to expand the TCSP boundaries to incorporate designated open space areas along the San Diego River.

The Wildlife Agencies offer the following comments and recommendations to assist the City in adequately identifying and/or mitigating the Project’s significant, direct and indirect impacts on fish and wildlife (biological) resources and to ensure the Project is consistent with ongoing regional conservation planning efforts.

1. Consistency with the Draft Subarea Plan: The Wildlife Agencies are currently working with the City on the development of the City’s subarea plan. Compliance with approved habitat plans, such as the MSCP, is required by CEQA. Specifically, section 15125(d) of the CEQA Guidelines requires that an EIR discuss any inconsistencies between a proposed Project and applicable general plans and regional plans, including habitat conservation plans and natural community conservation plans. We encourage the City to carefully evaluate the consistency of the proposed Project with the draft subarea plan and request that the draft Program EIR includes an assessment of the Project’s consistency with the draft subarea plan. In particular, the NOP describes proposed changes to the Arts and Entertainment Overlay District (AEOD) that may encourage impacts within or near the San Diego River. The San Diego River has habitat that supports important populations of wildlife, including federally listed bird species. In addition, much of the area along the San Diego River within the proposed AEOD is included in the draft subarea plan’s open space network either as protected open space, San Diego River conservation opportunity area, or City-owned preserve. Any proposed changes should not lead to new, unanticipated direct or indirect impacts or otherwise compromise the conservation goals developed in the draft subarea plan for this habitat and the species it supports.

2. Biological Baseline Assessment: The DEIR should provide a complete assessment of the flora and fauna within the project area, with particular emphasis upon identifying endangered, threatened, sensitive, locally unique species, including any proposed Covered Species under the draft subarea plan, and sensitive habitats. Adjoining habitat areas should be included in this assessment where site activities could lead to direct or indirect impacts offsite. CDFW’s California Natural Diversity Data Base1 (CNDDB) in
Sacramento should be consulted to obtain current information on any previously reported sensitive species and habitat. Sensitive species with potential to occur within the Project area include: San Diego ambrosia (Ambrosia pumila), willowy monardella [Monardella viminea (M. linoides subsp. v.)], western spadefoot toad (Spea hammondii), Belding’s orange-throated whiptail (Aspidoscelis hyperythra beldingi), and least Bell’s vireo (Vireo bellii pusillus). Focused species-specific surveys, conducted at the appropriate time of year and time of day when the sensitive species are active or otherwise identifiable, should be conducted. Acceptable species-specific survey procedures should be developed in consultation with the Wildlife Agencies, as needed. 1 https://wildlife.ca.gov/Data/BIOS.
3 DocuSign Envelope ID: 6903A5A6-5F8F-4640-BAEC-2C6A73BC59A9 Michael Coyne (FWS/CDFW-2023-0128792-CEQA_EIR-SD)

3. Biological Direct, Indirect, and Cumulative Impacts: To provide a thorough discussion of direct, indirect, and cumulative impacts expected to adversely affect biological resources, with specific measures to offset such impacts, the following should be addressed in the DEIR:
a. Specific acreages of habitat types that will be impacted due to Project-related activities. Details should be provided on whether impacts will be temporary or permanent.
b. Potential adverse impacts from lighting, noise, human activity, invasive species, and drainage. Mitigation measures proposed to alleviate such impacts in onsite undeveloped areas and onto adjacent lands should be included. c. Indirect project impacts on biological resources, including resources in nearby public lands, open space, adjacent natural habitats, riparian ecosystems, and any designated and/or proposed or existing reserve lands (e.g., preserve lands associated with an NCCP or HCP). Impacts on, and maintenance of, wildlife corridors, including access to undisturbed habitats in adjacent areas, should be fully evaluated in the DEIR.
d. Cumulative effects on biological resources. This analysis should be developed as described under CEQA Guidelines, section 15130. General and specific plans, as well as past, present, and anticipated future projects, should be analyzed relative to their impacts on similar plant communities and wildlife habitats.

4. Sensitive Bird Species: We recommend that measures be taken to avoid Project-related impacts to nesting birds, such as tricolored blackbird (Agelaius tricolor) and western burrowing owl (Athene cunicularia hypugaea). Migratory nongame native bird species are protected by international treaty under the Federal Migratory Bird Treaty Act (MBTA) of 1918 (Code of Federal Regulations, Title 50, § 10.13). Sections 3503, 3503.5, and 3513 of the California Fish and Game Code prohibit take of native birds and their active nests including raptors and other migratory nongame birds (as listed under the MBTA). Project activities including (but not limited to) staging and disturbances to native and nonnative vegetation, structures, and substrates should occur outside of the avian breeding season which generally runs from February 15 through August 31 (as early as January 1 for some raptors) to avoid take of birds or their eggs.

If avoidance of the avian breeding season is not feasible, surveys by a qualified biologist with experience in conducting breeding bird surveys should be conducted to detect protected native birds occurring in suitable nesting habitat that is to be disturbed and (as access to adjacent areas allows) any other such habitat within 300 feet of the disturbance area (within 500 feet for raptors). Project personnel, including all contractors working onsite, should be instructed on the sensitivity of the area.

Reductions in the nest buffer distance may be appropriate depending on the avian species involved, ambient levels of human activity, screening vegetation, or possibly other factors.
4 DocuSign Envelope ID: 6903A5A6-5F8F-4640-BAEC-2C6A73BC59A9 Michael Coyne (FWS/CDFW-2023-0128792-CEQA_EIR-SD)
The following comments (5 and 6) are specific to the Department:

5. Wetlands and Riparian Habitats: The Department has regulatory authority over activities in streams and/or lakes that will divert or obstruct the natural flow, or change the bed, channel, or bank (which may include associated riparian resources) of any river, stream, or lake or use material from a river, stream, or lake. For any such activities, the Project applicant (or “entity”) must provide written notification to the Department pursuant to section 1600 et seq. of the Fish and Game Code. Based on this notification and other information, the Department determines whether a Lake and Streambed Alteration Agreement (LSAA) with the applicant is required prior to conducting the proposed activities. The Department’s issuance of a LSAA for a Project that is subject to CEQA will require CEQA compliance actions by the Department as a Responsible Agency. To minimize additional requirements by the Department pursuant to section 1600 et seq. and/or under CEQA, the Program EIR should fully identify the potential impacts to the stream or riparian resources and provide adequate avoidance, mitigation, monitoring, and reporting commitments for issuance of the LSAA. Please visit the Department’s Lake and Streambed Alteration Program2 (ca.gov) for more
information (CDFW 2021).

6. Crotch’s Bumble Bee: The California Fish and Game Commission accepted a petition to list the Crotch’s bumble bee (Bombus crotchii) as endangered under CESA, determining the listing “may be warranted” and advancing the species to the candidacy stage of the CESA listing process. The Department considers adverse impacts to a species protected by CESA, for the purposes of CEQA, to be significant without mitigation. Therefore, we recommend the Project area be assessed to determine the potential for Crotch’s bumble bee to occur onsite. Crotch’s bumble bees primarily nest in late February through late October underground in abandoned small mammal burrows (Williams et al. 2014; Hatfield et al. 2018). Overwintering sites utilized by Crotch’s bumble bee queens include soft, disturbed soil (Goulson 2010), or under leaf litter or other debris (Williams et al. 2014).

The Department recommends that a qualified entomologist familiar with the species’ behavior and life history should conduct surveys within 1 year prior to vegetation removal and/or ground disturbance to determine the presence/absence of Crotch’s bumble bee. If bumble bees are detected, the qualified entomologist should notify the Department immediately to avoid take and ensure compliance with CESA. The Department has published a Survey Considerations document for CESA Candidate Bumble Bees.
3 This document describes factors such as evaluating potential for presence, habitat assessment, and survey methods.

We appreciate the opportunity to comment on this NOP. The comments and recommendations provided are based on our knowledge of listed, sensitive, and declining vegetation communities 2 https://wildlife.ca.gov/Conservation/Environmental-Review/LSA. 3 https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=213150&inline.

5 DocuSign Envelope ID: 6903A5A6-5F8F-4640-BAEC-2C6A73BC59A9 Michael Coyne (FWS/CDFW-2023-0128792-CEQA_EIR-SD)
in the City. If you have questions or comments regarding this letter, please contact Eric Porter4 of the Service at 760-431-9440, or Heather Schmalbach5 of the Department.

Sincerely,
Digitally signed by JONATHA JONATHAN SNYDER
Date: 2023.10.16 N SNYDER 14:25:36 -07'00'
Jonathan D. Snyder David Mayer
Assistant Field Supervisor Environmental Program Manager U.S. Fish and Wildlife Service California Department of Fish and Wildlife cc:

State Clearinghouse,
6 Sacramento.

David Mayer,
7 CDFW.

Karen Drewe,
8 CDFW.

Melanie Burlaza,
9 CDFW.

Jonathan D. Snyder,
10 USFWS.
4 [email protected]. 5
[email protected]. 6
[email protected].
7 [email protected].
8 [email protected].
9 [email protected].
10 [email protected].
6 DocuSign Envelope ID: 6903A5A6-5F8F-4640-BAEC-2C6A73BC59A9 Michael Coyne (FWS/CDFW-2023-0128792-CEQA_EIR-SD)

LITERATURE CITED
[CDFW] California Department of Fish and Wildlife. 2021. Lake and Streambed Alteration Program. Available from: https://wildlife.ca.gov/Conservation/LSA.

Goulson, D. 2010. Bumblebees: behavior, ecology, and conservation. Oxford University Press, New York.

Hatfield, R., S. Jepsen, S. Foltz Jordan, M. Blackburn, A. Code. 2018. A Petition to the State of California Fish and Game Commission to List Four Species of Bumblebees as Endangered Species.

Williams, P.H., R.W. Thorp, L.L. Richardson, and S.R. Colla. 2014. Bumble bees of North America: An Identification guide. Princeton University Press, Princeton, New Jersey.

From:

Sent:

To:

Cc:

Subject:

Michael Coyne
Wednesday, October 11, 2023 12:21 PM
'Lubich, Marcus'
Tylke, Melanie; Shorb, Elyce; Yara Fisher; Marni Borg
RE: NOP of DPEIR for Santee Town Center Specific Plan Update I County Comments
Thank you for your comments.

Michael Coyne, AICP
Principal Planner
Planning & Building Department
(619) 258-4100 x 160
[email protected]
From: Lubich, Marcus <[email protected]>
Sent: Wednesday, October 11, 2023 12:12 PM
To: Michael Coyne <[email protected]>
Cc: Tylke, Melanie <[email protected]>; Shorb, Elyce <[email protected]>
Subject: NOP of DPEIR for Santee Town Center Specific Plan Update I County Comments Micheal,
Please find County of San Diego Department of General Services comments below on the NOP of a Draft PEIR for the Santee Town Center Specific Plan Update. ● Housing Element Sites 20A and 20B are owned by the County and the Draft PEIR should analyze project alternatives in which the County develops the property differently than the currently proposed options. Other project alternatives should consider civic uses since this is County-owned property that has yet to be declared surplus property. The NOP does not recognize County ownership of key properties being studied in detailed and a project alternative not subject to the TCSP regulations should be analyzed for the County.
● Since the draft TCSP and PEIR are proposing retail village, performing arts, and dance studio on the Polo Barn site, which is in a FEMA floodplain, the PEIR should analyze the impacts of locating structures within the floodplain/floodway and identify appropriate mitigation measures.

Don’t hesitate to contact me with any questions.

Thank you,
Marcus Lubich, MPA
Project Manager l Asset Management Division
Cell: 858-414-4593

STATE OF CALIFORNIA Gavin Newsom, Governor

CHAIRPERSON
Reginald Pagaling
Chumash

VICE-CHAIRPERSON
Buffy McQuillen
Yokayo Pomo, Yuki,
Nomlaki

SECRETARY
Sara Dutschke
Miwok

PARLIAMENTARIAN
Wayne Nelson
Luiseño

COMMISSIONER
Isaac Bojorquez
Ohlone-Costanoan

COMMISSIONER
Stanley Rodriguez
Kumeyaay

COMMISSIONER
Laurena Bolden
Serrano

COMMISSIONER
Reid Milanovich
Cahuilla

COMMISSIONER
Vacant

EXECUTIVE SECRETARY
Raymond C.

Hitchcock
Miwok, Nisenan

NAHC HEADQUARTERS
1550 Harbor Boulevard
Suite 100
West Sacramento,
California 95691
(916) 373-3710
[email protected]
NAHC.ca.gov

NATIVE AMERICAN HERITAGE COMMISSION
September 5, 2023
Michael Coyne
City of Santee
10601 Magnolia Avenue
Santee, CA 92071
Re: 2023090032, Santee Town Center Specific Plan Update Project, San Diego County Dear Mr. Coyne:

The Native American Heritage Commission (NAHC) has received the Notice of Preparation (NOP), Draft Environmental Impact Report (DEIR) or Early Consultation for the project referenced above. The California Environmental Quality Act (CEQA) (Pub. Resources Code §21000 et seq.), specifically Public Resources Code §21084.1, states that a project that may cause a substantial adverse change in the significance of a historical resource, is a project that may have a significant effect on the environment. (Pub. Resources Code § 21084.1; Cal. Code Regs., tit.14, §15064.5 (b) (CEQA Guidelines §15064.5 (b)). If there is substantial evidence, in light of the whole record before a lead agency, that a project may have a significant effect on the environment, an Environmental Impact Report (EIR) shall be prepared. (Pub. Resources Code §21080 (d); Cal. Code Regs., tit. 14, § 5064 subd.(a)(1) (CEQA Guidelines §15064 (a)(1)).

In order to determine whether a project will cause a substantial adverse change in the significance of a historical resource, a lead agency will need to determine whether there are historical resources within the area of potential effect (APE).

CEQA was amended significantly in 2014. Assembly Bill 52 (Gatto, Chapter 532, Statutes of 2014) (AB 52) amended CEQA to create a separate category of cultural resources, “tribal cultural resources” (Pub. Resources Code §21074) and provides that a project with an effect that may cause a substantial adverse change in the significance of a tribal cultural resource is a project that may have a significant effect on the environment. (Pub. Resources Code §21084.2). Public agencies shall, when feasible, avoid damaging effects to any tribal cultural resource. (Pub. Resources Code §21084.3 (a)). AB 52 applies to any project for which a notice of preparation, a notice of negative declaration, or a mitigated negative declaration is filed on or after July 1, 2015. If your project involves the adoption of or amendment to a general plan or a specific plan, or the designation or proposed designation of open space, on or after March 1, 2005, it may also be subject to Senate Bill 18 (Burton, Chapter 905, Statutes of 2004) (SB 18).

Both SB 18 and AB 52 have tribal consultation requirements. If your project is also subject to the federal National Environmental Policy Act (42 U.S.C. § 4321 et seq.) (NEPA), the tribal consultation requirements of Section 106 of the National Historic Preservation Act of 1966 (154 U.S.C. 300101, 36 C.F.R. §800 et seq.) may also apply.

The NAHC recommends consultation with California Native American tribes that are traditionally and culturally affiliated with the geographic area of your proposed project as early as possible in order to avoid inadvertent discoveries of Native American human remains and best protect tribal cultural resources. Below is a brief summary of portions of AB 52 and SB 18 as well as the NAHC’s recommendations for conducting cultural resources assessments.

Consult your legal counsel about compliance with AB 52 and SB 18 as well as compliance with any other applicable laws.

AB 52

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AB 52 has added to CEQA the additional requirements listed below, along with many other requirements:

1. Fourteen Day Period to Provide Notice of Completion of an Application/Decision to Undertake a Project:

Within fourteen (14) days of determining that an application for a project is complete or of a decision by a public agency to undertake a project, a lead agency shall provide formal notification to a designated contact of, or tribal representative of, traditionally and culturally affiliated California Native American tribes that have requested notice, to be accomplished by at least one written notice that includes:
a. A brief description of the project.
b. The lead agency contact information.
c. Notification that the California Native American tribe has 30 days to request consultation. (Pub.

Resources Code §21080.3.1 (d)).
d. A “California Native American tribe” is defined as a Native American tribe located in California that is on the contact list maintained by the NAHC for the purposes of Chapter 905 of Statutes of 2004 (SB 18). (Pub. Resources Code §21073).

2. Begin Consultation Within 30 Days of Receiving a Tribe’s Request for Consultation and Before Releasing a Negative Declaration, Mitigated Negative Declaration, or Environmental Impact Report: A lead agency shall begin the consultation process within 30 days of receiving a request for consultation from a California Native American tribe that is traditionally and culturally affiliated with the geographic area of the proposed project. (Pub. Resources Code §21080.3.1, subds. (d) and (e)) and prior to the release of a negative declaration, mitigated negative declaration or Environmental Impact Report. (Pub. Resources Code §21080.3.1(b)). a. For purposes of AB 52, “consultation shall have the same meaning as provided in Gov. Code §65352.4 (SB 18). (Pub. Resources Code §21080.3.1 (b)).

3. Mandatory Topics of Consultation If Requested by a Tribe: The following topics of consultation, if a tribe requests to discuss them, are mandatory topics of consultation:
a. Alternatives to the project.
b. Recommended mitigation measures.
c. Significant effects. (Pub. Resources Code §21080.3.2 (a)).

4. Discretionary Topics of Consultation: The following topics are discretionary topics of consultation:
a. Type of environmental review necessary.
b. Significance of the tribal cultural resources.
c. Significance of the project’s impacts on tribal cultural resources. d. If necessary, project alternatives or appropriate measures for preservation or mitigation that the tribe may recommend to the lead agency. (Pub. Resources Code §21080.3.2 (a)).

5. Confidentiality of Information Submitted by a Tribe During the Environmental Review Process: With some exceptions, any information, including but not limited to, the location, description, and use of tribal cultural resources submitted by a California Native American tribe during the environmental review process shall not be included in the environmental document or otherwise disclosed by the lead agency or any other public agency to the public, consistent with Government Code §6254 (r) and §6254.10. Any information submitted by a California Native American tribe during the consultation or environmental review process shall be published in a confidential appendix to the environmental document unless the tribe that provided the information consents, in writing, to the disclosure of some or all of the information to the public. (Pub. Resources Code §21082.3 (c)(1)).

6. Discussion of Impacts to Tribal Cultural Resources in the Environmental Document: If a project may have a significant impact on a tribal cultural resource, the lead agency’s environmental document shall discuss both of the following:
a. Whether the proposed project has a significant impact on an identified tribal cultural resource. b. Whether feasible alternatives or mitigation measures, including those measures that may be agreed to pursuant to Public Resources Code §21082.3, subdivision (a), avoid or substantially lessen the impact on the identified tribal cultural resource. (Pub. Resources Code §21082.3 (b)).

Page 2 of 5 ends

7. Conclusion of Consultation: Consultation with a tribe shall be considered concluded when either of the following occurs:
a. The parties agree to measures to mitigate or avoid a significant effect, if a significant effect exists, on a tribal cultural resource; or
b. A party, acting in good faith and after reasonable effort, concludes that mutual agreement cannot be reached. (Pub. Resources Code §21080.3.2 (b)).

8. Recommending Mitigation Measures Agreed Upon in Consultation in the Environmental Document: Any mitigation measures agreed upon in the consultation conducted pursuant to Public Resources Code §21080.3.2 shall be recommended for inclusion in the environmental document and in an adopted mitigation monitoring and reporting program, if determined to avoid or lessen the impact pursuant to Public Resources Code §21082.3, subdivision (b), paragraph 2, and shall be fully enforceable. (Pub. Resources Code §21082.3 (a)).

9. Required Consideration of Feasible Mitigation: If mitigation measures recommended by the staff of the lead agency as a result of the consultation process are not included in the environmental document or if there are no agreed upon mitigation measures at the conclusion of consultation, or if consultation does not occur, and if substantial evidence demonstrates that a project will cause a significant effect to a tribal cultural resource, the lead agency shall consider feasible mitigation pursuant to Public Resources Code §21084.3 (b). (Pub. Resources Code §21082.3 (e)).

10. Examples of Mitigation Measures That, If Feasible, May Be Considered to Avoid or Minimize Significant Adverse Impacts to Tribal Cultural Resources:
a. Avoidance and preservation of the resources in place, including, but not limited to:
i. Planning and construction to avoid the resources and protect the cultural and natural context.
ii. Planning greenspace, parks, or other open space, to incorporate the resources with culturally appropriate protection and management criteria.
b. Treating the resource with culturally appropriate dignity, taking into account the tribal cultural values and meaning of the resource, including, but not limited to, the following:
i. Protecting the cultural character and integrity of the resource. ii. Protecting the traditional use of the resource.
iii. Protecting the confidentiality of the resource.
c. Permanent conservation easements or other interests in real property, with culturally appropriate management criteria for the purposes of preserving or utilizing the resources or places. d. Protecting the resource. (Pub. Resource Code §21084.3 (b)). e. Please note that a federally recognized California Native American tribe or a non-federally recognized California Native American tribe that is on the contact list maintained by the NAHC to protect a California prehistoric, archaeological, cultural, spiritual, or ceremonial place may acquire and hold conservation easements if the conservation easement is voluntarily conveyed. (Civ. Code §815.3 (c)). f. Please note that it is the policy of the state that Native American remains and associated grave artifacts shall be repatriated. (Pub. Resources Code §5097.991).

11. Prerequisites for Certifying an Environmental Impact Report or Adopting a Mitigated Negative Declaration or Negative Declaration with a Significant Impact on an Identified Tribal Cultural Resource: An Environmental Impact Report may not be certified, nor may a mitigated negative declaration or a negative declaration be adopted unless one of the following occurs:
a. The consultation process between the tribes and the lead agency has occurred as provided in Public Resources Code §21080.3.1 and §21080.3.2 and concluded pursuant to Public Resources Code §21080.3.2.
b. The tribe that requested consultation failed to provide comments to the lead agency or otherwise failed to engage in the consultation process.
c. The lead agency provided notice of the project to the tribe in compliance with Public Resources Code §21080.3.1 (d) and the tribe failed to request consultation within 30 days. (Pub. Resources Code §21082.3 (d)).

The NAHC’s PowerPoint presentation titled, “Tribal Consultation Under AB 52: Requirements and Best Practices” may be found online at: http://nahc.ca.gov/wp-content/uploads/2015/10/AB52TribalConsultation_CalEPAPDF.pdf

Page 3 of 5 ends

SB 18
SB 18 applies to local governments and requires local governments to contact, provide notice to, refer plans to, and consult with tribes prior to the adoption or amendment of a general plan or a specific plan, or the designation of open space. (Gov. Code §65352.3). Local governments should consult the Governor’s Office of Planning and Research’s “Tribal Consultation Guidelines,” which can be found online at:
https://www.opr.ca.gov/docs/09_14_05_Updated_Guidelines_922.pdf.

Some of SB 18’s provisions include:

1. Tribal Consultation: If a local government considers a proposal to adopt or amend a general plan or a specific plan, or to designate open space it is required to contact the appropriate tribes identified by the NAHC by requesting a “Tribal Consultation List.” If a tribe, once contacted, requests consultation the local government must consult with the tribe on the plan proposal. A tribe has 90 days from the date of receipt of notification to request consultation unless a shorter timeframe has been agreed to by the tribe. (Gov. Code §65352.3 (a)(2)).

2. No Statutory Time Limit on SB 18 Tribal Consultation. There is no statutory time limit on SB 18 tribal consultation.

3. Confidentiality: Consistent with the guidelines developed and adopted by the Office of Planning and Research pursuant to Gov. Code §65040.2, the city or county shall protect the confidentiality of the information concerning the specific identity, location, character, and use of places, features and objects described in Public Resources Code §5097.9 and §5097.993 that are within the city’s or county’s jurisdiction. (Gov. Code §65352.3 (b)).

4. Conclusion of SB 18 Tribal Consultation: Consultation should be concluded at the point in which:
a. The parties to the consultation come to a mutual agreement concerning the appropriate measures for preservation or mitigation; or
b. Either the local government or the tribe, acting in good faith and after reasonable effort, concludes that mutual agreement cannot be reached concerning the appropriate measures of preservation or mitigation. (Tribal Consultation Guidelines, Governor’s Office of Planning and Research (2005) at p. 18).

Agencies should be aware that neither AB 52 nor SB 18 precludes agencies from initiating tribal consultation with tribes that are traditionally and culturally affiliated with their jurisdictions before the timeframes provided in AB 52 and SB 18. For that reason, we urge you to continue to request Native American Tribal Contact Lists and “Sacred Lands File” searches from the NAHC. The request forms can be found online at: http://nahc.ca.gov/resources/forms/.

NAHC Recommendations for Cultural Resources Assessments To adequately assess the existence and significance of tribal cultural resources and plan for avoidance, preservation in place, or barring both, mitigation of project-related impacts to tribal cultural resources, the NAHC recommends the following actions:

1. Contact the appropriate regional California Historical Research Information System (CHRIS) Center (https://ohp.parks.ca.gov/?page_id=30331) for an archaeological records search. The records search will determine:
a. If part or all of the APE has been previously surveyed for cultural resources. b. If any known cultural resources have already been recorded on or adjacent to the APE. c. If the probability is low, moderate, or high that cultural resources are located in the APE. d. If a survey is required to determine whether previously unrecorded cultural resources are present.

2. If an archaeological inventory survey is required, the final stage is the preparation of a professional report detailing the findings and recommendations of the records search and field survey. a. The final report containing site forms, site significance, and mitigation measures should be submitted immediately to the planning department. All information regarding site locations, Native American human remains, and associated funerary objects should be in a separate confidential addendum and not be made available for public disclosure.
b. The final written report should be submitted within 3 months after work has been completed to the appropriate regional CHRIS center.

Page 4 of 5 ends

3. Contact the NAHC for:
a. A Sacred Lands File search. Remember that tribes do not always record their sacred sites in the Sacred Lands File, nor are they required to do so. A Sacred Lands File search is not a substitute for consultation with tribes that are traditionally and culturally affiliated with the geographic area of the project’s APE.
b. A Native American Tribal Consultation List of appropriate tribes for consultation concerning the project site and to assist in planning for avoidance, preservation in place, or, failing both, mitigation measures.

4. Remember that the lack of surface evidence of archaeological resources (including tribal cultural resources) does not preclude their subsurface existence.
a. Lead agencies should include in their mitigation and monitoring reporting program plan provisions for the identification and evaluation of inadvertently discovered archaeological resources per Cal. Code Regs., tit. 14, §15064.5(f) (CEQA Guidelines §15064.5(f)). In areas of identified archaeological sensitivity, a certified archaeologist and a culturally affiliated Native American with knowledge of cultural resources should monitor all ground-disturbing activities.
b. Lead agencies should include in their mitigation and monitoring reporting program plans provisions for the disposition of recovered cultural items that are not burial associated in consultation with culturally affiliated Native Americans.
c. Lead agencies should include in their mitigation and monitoring reporting program plans provisions for the treatment and disposition of inadvertently discovered Native American human remains. Health and Safety Code §7050.5, Public Resources Code §5097.98, and Cal. Code Regs., tit. 14, §15064.5, subdivisions (d) and (e) (CEQA Guidelines §15064.5, subds. (d) and (e)) address the processes to be followed in the event of an inadvertent discovery of any Native American human remains and associated grave goods in a location other than a dedicated cemetery.

If you have any questions or need additional information, please contact me at my email address: Pricilla.Torres[email protected].

Sincerely,
Pricilla Torres-Fuentes
Cultural Resources Analyst
cc: State Clearinghouse

Page 5 of 5 ends

Appendix B
Air Quality Technical Report
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Santee Town Center Specific
Plan Update
Air Quality Technical Report
July 2024 | 01427.00004.001
Prepared for:

M.W. Steele Group
1805 Newton Avenue, Suite A
San Diego, CA 92113
Prepared by:

HELIX Environmental Planning, Inc.
7578 El Cajon Boulevard
La Mesa, CA 91942
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i
Table of Contents
Section Page
EXECUTIVE SUMMARY ............................................................................................................................. ES-1

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

1.1 Purpose of the Report......................................................................................................... 1

1.2 Project Location .................................................................................................................. 1

1.3 Project Description ............................................................................................................. 1

2.0 REGULATORY SETTING..................................................................................................................... 5

2.1 Air Pollutant Descriptors and Terminology......................................................................... 5

2.2 Federal Regulations ............................................................................................................ 7

2.3 State Regulations................................................................................................................ 9

2.4 Local Regulations.............................................................................................................. 11

3.0 EXISTING CONDITIONS................................................................................................................... 12

3.1 Climate/Meteorology ....................................................................................................... 12

3.2 Existing Air Quality............................................................................................................ 13

3.3 Sensitive Receptors........................................................................................................... 14

4.0 METHODOLOGY AND SIGNIFICANCE CRITERIA.............................................................................. 14

4.1 Criteria Pollutant Emissions.............................................................................................. 14

4.2 Air Quality Significance Criteria ........................................................................................ 17

5.0 IMPACT ANALYSIS .......................................................................................................................... 19

5.1 Issue 1: Consistency with the Attainment Plan ................................................................ 19

5.2 Issue 2: Cumulatively Considerable Net Increase of Nonattainment Criteria Pollutants.......................................................................................................................... 20

5.3 Issue 3: Impacts to Sensitive Receptors............................................................................ 24

5.4 Issue 4: Odors ................................................................................................................... 26

6.0 LIST OF PREPARERS ........................................................................................................................ 27

7.0 REFERENCES................................................................................................................................... 28 ii
Table of Contents (cont.)

LIST OF APPENDICES
A CalEEMod Output

LIST OF TABLES
No. Title Page
1 Housing Element Sites Zoning.......................................................................................................... 3 2 Ambient Air Quality Standards........................................................................................................ 8 3 San Diego Air Basin Attainment Status............................................................................................ 9 4 Air Quality Monitoring Data........................................................................................................... 13 5 Housing Element Sites Anticipated Construction Schedule........................................................... 15 6 Housing Element Sites Construction Equipment Assumptions ..................................................... 15 7 Land Use Profile – First Year of Construction ................................................................................ 16 8 Screening-Level Thresholds for Air Quality Impact Analysis.......................................................... 18 9 Maximum Daily Construction Emissions........................................................................................ 21 10 Maximum Daily Operational Emissions......................................................................................... 22 11 Maximum Daily Operational Emissions With Mitigation............................................................... 23 iii
Acronyms and Abbreviations
AAM Annual Arithmetic Mean
AAQS Ambient Air Quality Standards
ADT average daily trips
AEN Arts and Entertainment Neighborhood
ALUCP Airport Land Use Compatibility Plan
APN Assessor Parcel Number
Attainment Plan 2020 Plan for Attaining the National Ambient Air Quality Standards for Ozone in San Diego County
BMP best management practice
CAA Clean Air Act
CAAQS California Ambient Air Quality Standards
CalEEMod California Emissions Estimator Model
CAPCOA California Air Pollution Control Officers Association CARB California Air Resources Board
CCAA California Clean Air Act
CEQA California Environmental Quality Act
City City of Santee
CO carbon monoxide
County County of San Diego
DPM diesel particulate matter
GHG greenhouse gas
H2S hydrogen sulfide
HAP Housing Acceleration Program
HCD California Department of Housing and Community Development HE Housing Element
LOS Level of Service
mg/m3 milligrams per cubic meter
mph miles per hour
NAAQS National Ambient Air Quality Standards
NO2 nitrogen dioxide
NOX nitrogen oxides
O3 ozone
OEHHA Office of Environmental Health Hazard Assessment
iv
Acronyms and Abbreviations (cont.)
Pb lead
PM particulate matter
PM10 particulate matter 10 microns or less in diameter
PM2.5 particulate matter 2.5 microns or less in diameter ppm parts per million
RAQS Regional Air Quality Strategy
RHNA Regional Housing Needs Allocation
ROG reactive organic gas
SANDAG San Diego Association of Governments
SCAQMD South Coast Air Quality Management District
SDAB San Diego Air Basin
SDAPCD San Diego County Air Pollution Control District
SDG&E San Diego Gas and Electric
SIP State Implementation Plan
SMAQMD Sacramento Metropolitan Air Quality Management District SO2 sulfur dioxide
SOX sulfur oxides
SR State Route
TAC toxic air contaminant
TCSP Town Center Specific Plan
USEPA U.S. Environmental Protection Agency
VOC volatile organic compound
Air Quality Technical Report for the
Santee Town Center Specific Plan Amendment | July 2024
ES-1

EXECUTIVE SUMMARY
This report presents an assessment of potential air quality impacts associated with the City of Santee (City) Town Center Specific Plan (TCSP) Amendment Project (project). The report evaluates the potential for criteria air pollutant emission impacts during the construction and operation of the project. The project proposes updates to the existing TCSP and to the Santee Arts and Entertainment Neighborhood (AEN). It also proposes conceptual planning and objective design standards for four large strategic Housing Elements (HE) within the TCSP area. The HE sites include Properties 16A, 16B, 20A, and 20B as delineated in the Sixth Cycle Housing Element EIR. The overall TCSP is approximately 651.42 acres, of which 341.72 acres are within the AEN, 11.04 acres are within HE Property 16A, 8.65 acres are within HE Property 16B, 7.76 acres are within Property 20A, and 9.92 acres are within Property 20B. The entire TCSP is located in the City of Santee, bordered by North Magnolia Avenue to the east, Mast Boulevard to the north, and Mission Gorge Road to the south. The western border of the TCSP runs through the San Diego River approximately 0.43-mile west of Cuyamaca Street and 0.27-mile east of Carlton Hills Boulevard.

Future development within the TCSP area would not result in an increase in development or an increase in traffic generation over what would occur under buildout of the adopted zoning and land use designations and would therefore not conflict with the San Diego County Ozone Attainment Plan or Regional Air Quality Strategy. Criteria pollutant and precursor pollutant emissions generated during project construction activities would not exceed the San Diego County Air Pollution Control District (SDAPCD) thresholds. Long-term operational emissions of criteria pollutants and precursors associated with the four HE sites would not exceed the SDAPCD thresholds, and the impacts would be less than significant. However, the long-term operational emissions of criteria pollutants and precursors generated by full buildout of the TCSP would result in exceedances to SDAPCD’s daily screening thresholds for VOC, CO, PM10, and PM2.5. With implementation of mitigation measure AQ–1 requiring the use of electric landscaping equipment, VOC, CO, PM10, PM2.5 emissions would be reduced, but remain above their respective thresholds resulting in a significant and unavoidable operational impact.

Construction and operation of the project would not expose sensitive receptors to substantial concentrations of toxic air contaminants, including diesel particulate matter emissions from the use of construction equipment. The project’s contribution to area traffic would not result in carbon monoxide hotspots. Project residents would not be exposed to substantial pollutant concentrations based on the proposed project location. Impacts related to exposure of sensitive receptors to substantial pollutant concentrations would be less than significant.

Neither construction activities nor long-term operation of the project would be a source of objectionable odors that would adversely affect a significant number of persons, and odor impacts would be less than significant.

Air Quality Technical Report for the
Santee Town Center Specific Plan Amendment | July 2024
ES-2
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Air Quality Technical Report for the
Santee Town Center Specific Plan Amendment | July 2024
1 1.0 INTRODUCTION

1.1 PURPOSE OF THE REPORT
This report analyzes potential air quality impacts associated with the City of Santee (City) Town Center Specific Plan (TCSP) Amendment Project (project) and includes an assessment of potential impacts associated with project construction and project operation. The project proposes to update the City of Santee General Plan, modify the Arts and Entertainment Neighborhood (AEN), and provide objective design standards and contextual designs for four strategic Housing Element (HE) sites within the TCSP.

Analysis within this report was prepared to support impact analysis pursuant to the California Environmental Quality Act (CEQA; Public Resources Code Sections 21000 et seq.), CEQA Guidelines (Title 14, Section 15000 et seq. of the California Code of Regulations).

1.2 PROJECT LOCATION
The project area is located in the City of Santee, in the eastern portion of the County of San Diego, north of State Route (SR) 52 and west of SR 67 (Figure 1, Regional Location). The proposed project area extends across over 1,000 Assessor’s Parcel Numbers (APNs), within the TCSP Area in the central portion of the City, bounded by Mission Gorge Road to the south, Mast Boulevard to the north, and Magnolia Avenue to the east (Figure 2, Aerial Photograph). Cuyamaca Street runs north-south through the western portion of the project area, forming segments of the western project boundary, and the San Diego River runs through the central northern portion of the project area (Figure 2). The topography of the project area is bisected by the San Diego River, which originates within the Santa Ysabel Open Space Preserve East and flows west and southwest and ultimately reaches the Pacific Ocean.

The overall project area consists of 651.42 acres, which includes the proposed AEN (341.72 acres) and four HE Properties: Lot 16A is 11.04 acres, Lot 16B is 8.65 acres, Lot 20A is 7.76 acres, and Lot 20B is

9.92 acres.

1.3 PROJECT DESCRIPTION
The proposed project consists of a comprehensive update to the TCSP to modify or establish new land use designations, land uses, development standards, and conceptual guidelines that would apply to future development within the TCSP area. As part of this effort, the City would also make modifications to the AEN and provide objective design standards and conceptual designs for strategic HE sites within the TCSP. A more detailed description of each of the proposed project components is described below.

1.3.1 Town Center Specific Plan
Amendments to the TCSP would incorporate relevant updates to the plan’s vision, land use permissions, and development standards. As part of the updates, new text and graphics would be developed and organized into a series of chapters, such as: Introduction, Land Use and Urban Form, Mobility and Beautification, Infrastructure and Public Facilities, Implementation, and Administration. Text and concepts that remain relevant to the vision and goals of the TCSP would be maintained and incorporated into the updated TCSP document format and structure.

Air Quality Technical Report for the
Santee Town Center Specific Plan Amendment | July 2024
2 The amended TCSP would incorporate updated allowable and permitted land uses and development standards tailored to the project area. The updated TCSP would include graphics that illustrate the planned land use concepts and the plan’s vision at key sites. As part of the TCSP, the circulation network exhibits of the plan would be updated, including the bicycle, pedestrian, and transit network maps, and street cross sections. The TCSP would include concepts for key improvements in the public right-of-way to enhance circulation within the project area. The TCSP would incorporate concepts to illustrate wayfinding and branding signage at important locations within the public right-of-way and public trails, such as signs tailored for pedestrian, bicyclists and transit users, signs designed to direct vehicular traffic and refer to parking areas, as well as iconic gateway structures that enhance the identity and sense of place in the project area.

1.3.2 Arts and Entertainment Neighborhood
The TCSP would include an amendment to the AEN. The City adopted the AEN in 2019 with the intent of encouraging the development of an Arts & Entertainment Neighborhood within a significant portion of the TCSP. The update would incorporate the vision, guidelines, and development standards specific to the AEN as a subsection of the Land Use and Urban Form chapter of the TCSP. This section of the TCSP would also incorporate tailored land use designations that support uses related to art and culture, entertainment, commercial recreation, visitor, and civic uses.

The update to the vision and development standards for the AEN would aim to enhance connections to the San Diego River, strengthen the sense of place by creating an attraction for residents and visitors to gather, and public space concepts that would incorporate streetscape concepts with features such as landscaping, water elements, shade, lighting, and wayfinding. The concepts would also aim to create a central destination within the TCSP area, with a strong emphasis on connecting Arts & Entertainment to the natural environment.
1 The original Town Center Specific Plan published in 1986 cited the TCSP area as 706 acres, however amendments to the plan have reduced the Specific Plan total acreage. Additionally, the original acreage was based on an estimate; due to improved geographic information software over time, the number of reported acres in the TCSP has changed as the accuracy of the data has increased.

Pacific
ocean
8 Miles t Source; Base Map Layers (SanGIS, 2016)
I
• al Location HEEnvironL m!!anning Region Figure 1
____ ____
Proposed Santee Town Center Specific Plan
Proposed Arts and Entertainment Neighborhood
Site 16A
Site 16B
Site 20A
Site 20B
o 850 Feet _E---3 E---3 1
HELIX Aerial Photograph Environmental Planning ------------------------------------------------------------------------------------------------------------------=----=--- Figure 2
Air Quality Technical Report for the
Santee Town Center Specific Plan Amendment | July 2024
3 Additionally, the update would incorporate an adjustment to the AEN boundaries to include additional sites such as the open space designated areas along the San Diego River, areas north of the San Diego River, south of Riverwalk Drive, west of River Park Drive, east of Cuyamaca Street, and west of Magnolia Avenue. As a result of the boundary adjustments, the AEN area would expand from 172.492 to 341.72 acres, increasing by a total of 169.23 acres.

1.3.3 Four Strategic Housing Element Sites (2021-2029 Sixth Cycle) The City Council adopted the Housing Element (2021-2029 Sixth Cycle) on May 11, 2022. The HE was prepared in compliance with State housing law as determined by the California Department of Housing and Community Development (HCD) on December 6, 2022. The HE included a Sites Inventory map and table (Figure C-1 and Table C-1 of the HE), that included a series of sites that are currently undeveloped or underutilized. The identified sites provide an opportunity for the City to meet its Regional Housing Needs Allocation (RHNA) housing production goals. Four strategic undeveloped housing sites identified in the Sites Inventory are located within the boundary of the TCSP and the AEN. The sites are identified as 16A, 16B, 20A, and 20B. Sites 16A and 16B are undeveloped sites located just north of Mission Gorge Road and east of Riverview Parkway in the Santee Town Center. The area surrounding the sites is primarily developed with Santee Trolley Square immediately west of the site, the Las Colinas Detention Facility to the east, and open space associated with the San Diego River to the north. A portion of Site 16A is located within the Airport Safety Zone 4 as designated in the Gillespie Field Airport Land Use Compatibility Plan (ALUCP). Sites 20A and 20B are undeveloped sites located just west of Magnolia Avenue, south of Riverview Parkway, and east of Edgemoor Drive. Sites 20A and 20B surround the Historic Edgemoor Polo or Dairy Barn. To the west of Site 20A is the Las Colinas Detention Facility, to the east is a gated 55+ manufactured home community. Site 20B is bordered by single-family residential homes to the south, multifamily residential to the east, and Las Colinas and Riverview Office Park to the west. A portion of the site is located within the Gillespie Field ALUCP Airport Safety Zone 4. The sites are proposed to be developed with residential uses.

The HE Implementation Program identified specific sites that would require rezoning to allow for residential uses, and/or to allow for the estimated housing capacity included in the HE. The HE proposed zoning changes for sites 16A, 16B, 20A, and 20B. As part of the realization of the Housing Element Implementation Program, the City analyzed and approved the re-zone of the four above-mentioned sites and adopted the rezoning on October 26, 2022. The zoning for sites 16A, 16B, 20A, and 20B as a result of the HE Implementation Program can be found in Table 1, Housing Element Sites Zoning.

Table 1

HOUSING ELEMENT SITES ZONING
Site Size
(acres) Current Zoning Current Density (dwelling units per acre) 16A 11.11 Residential (TC-R-30) 30 to 36
16B 8.61 Residential (TC-R-14) 14 to 22
20A 7.75 Residential (TC-R-22) 22 to 30
20B 10.00 Residential (TC-R-30) 30 to 36
2 The 2019 Art and Entertainment Overlay District refers to 155 acres; however, current GIS data shows 172 acres for the same area.

Air Quality Technical Report for the
Santee Town Center Specific Plan Amendment | July 2024
4 To further advance the housing production in Santee, City staff applied for a Housing Acceleration Program (HAP) grant from the San Diego Association of Governments (SANDAG), which was awarded.

The HAP grant provides funding for project-level analysis of HE sites 16A, 16B, 20A, and 20B. The amended TCSP will include graphics and data that illustrate site planning and development concepts for each of these sites based on the maximum allowable density allowed by zoning.

1.3.4 Construction Best Management Practices
The project would incorporate best management practices (BMPs) required by law during construction to reduce emissions of fugitive dust. For example, the San Diego County Air Pollution Control District (SDAPCD) Rule 55 ‒ Fugitive Dust Control regulates visible dust/dirt beyond the property line of a project. SDAPCD Rule 55 requires the following (SDAPCD 2009):
(1) Airborne Dust Beyond the Property Line: No person shall engage in construction or demolition activity subject to this rule in a manner that discharges visible dust emissions into the atmosphere beyond the property line for a period or periods aggregating more than 3 minutes in any 60-minute period.
(2) Track-Out/Carry-Out: Visible roadway dust as a result of active operations, spillage from transport trucks, erosion, or track-out/carry-out shall:
(i) be minimized by the use of any of the following or equally effective track-out/carry-out and erosion control measures that apply to the project or operation:
(a) track-out grates or gravel beds at each egress point; (b) wheel-washing at each egress during muddy conditions, soil binders, chemical soil stabilizers, geotextiles, mulching, or seeding; and
(c) for outbound transport trucks: using secured tarps or cargo covering, watering, or treating of transported material; and
(ii) be removed at the conclusion of each workday when active operations cease, or every 24 hours for continuous operations. If a street sweeper is used to remove any trackout/carry-out, only PM10- (particulate matter less than 10 microns) efficient street sweepers certified to meet the most current South Coast Air Quality Management District (SCAQMD) Rule 1186 requirements shall be used. The use of blowers for removal of track-out/carry-out is prohibited under any circumstances.

The control measures listed below are the BMPs that are required by applicable law that the project would incorporate for dust control and are included in the modeling:
• A minimum of two applications of water shall be applied during grading between dozer/grader passes;
• Paving, chip sealing, or chemical stabilization of internal roadways shall be applied after completion of grading;
• Grading shall be terminated if winds exceed 25 miles per hour (mph); • All exposed surfaces shall maintain a minimum soil moisture of 12 percent; Air Quality Technical Report for the
Santee Town Center Specific Plan Amendment | July 2024
5 • Dirt storage piles shall be stabilized by chemical binders, tarps, fencing, or other erosion control; and
• Vehicle speeds shall be limited to 15 mph on unpaved roads.

2.0 REGULATORY SETTING
The project site is located within the San Diego Air Basin (SDAB). Air quality in the SDAB is regulated by the U.S. Environmental Protection Agency (USEPA) at the federal level, by the California Air Resources Board (CARB) at the state level, and by the SDAPCD at the regional level.

2.1 AIR POLLUTANT DESCRIPTORS AND TERMINOLOGY

2.1.1 Criteria Air Pollutants
Criteria pollutants are defined by state and federal law as a risk to the health and welfare of the public.

In general, criteria air pollutants include the following compounds:
• Ozone (O3)
• Carbon monoxide (CO)
• Nitrogen dioxide (NO2)
• Particulate matter (PM), which is further subdivided:
o Coarse PM, 10 microns or less in diameter (PM10)
o Fine PM, 2.5 microns or less in diameter (PM2.5)
• Sulfur dioxide (SO2)
• Lead (Pb)
Criteria pollutants can be emitted directly from sources (primary pollutants; e.g., CO, SO2, PM10, PM2.5, and lead), or they may be formed through chemical and photochemical reactions of precursor pollutants in the atmosphere (secondary pollutants; e.g., ozone, NO2, PM10, and PM2.5). PM10 and PM2.5 can be both primary and secondary pollutants. The principal precursor pollutants of concern are reactive organic gases ([ROGs] also known as volatile organic compounds [VOCs])3 and nitrogen oxides (NOX).

Specific adverse health effects on individuals or population groups induced by criteria pollutant emissions are highly dependent on a multitude of interconnected variables such as cumulative concentrations, local meteorology and atmospheric conditions, and the number and characteristics of exposed individuals (e.g., age, gender). Criteria pollutant precursors (ROG and NOX) affect air quality on a regional scale, typically after significant delay and distance from the pollutant source emissions. Health effects related to ozone and NO2 are, therefore, the product of emissions generated by numerous sources throughout a region. Emissions of criteria pollutants from vehicles traveling to or from the project site (mobile emissions) are distributed nonuniformly in location and time throughout the region, 3 CARB defines and uses the term ROGs while the USEPA defines and uses the term VOCs. The compounds included in the lists of ROGs and VOCs and the methods of calculation are slightly different. However, for the purposes of estimating criteria pollutant precursor emissions, the two terms are often used interchangeably.

Air Quality Technical Report for the
Santee Town Center Specific Plan Amendment | July 2024
6 wherever the vehicles may travel. As such, specific health effects from these criteria pollutant emissions cannot be meaningfully correlated to the incremental contribution from a project.

The following specific descriptions of health effects for each air pollutant associated with project construction and operation are based on information available through the USEPA (2024a) and CARB (2024a).

Ozone. Ozone is considered a photochemical oxidant, which is a chemical that is formed when VOCs and NOX, both by-products of fuel combustion, react in the presence of ultraviolet light. Ozone is considered a respiratory irritant and prolonged exposure can reduce lung function, aggravate asthma, and increase susceptibility to respiratory infections. Children and those with existing respiratory diseases are at greatest risk from exposure to ozone.

Reactive Organic Gases. ROGs (also known as VOCs) are compounds composed primarily of hydrogen and carbon atoms. Internal combustion associated with motor vehicle usage is the major source of ROGs. Other sources of ROGs include evaporative emissions from paints and solvents, the application of asphalt paving, and the use of household consumer products such as aerosols. Adverse effects on human health are not caused directly by ROGs, but by reactions of ROGs to form secondary pollutants such as ozone.

Carbon Monoxide. CO is a product of fuel combustion. CO is an odorless, colorless gas. CO affects red blood cells in the body by binding to hemoglobin and reducing the amount of oxygen that can be carried to the body’s organs and tissues. CO can cause health effects to those with cardiovascular disease and can also affect mental alertness and vision.

Nitrogen Dioxide. NO2 is also a by-product of fuel combustion and is formed both directly as a product of combustion and in the atmosphere through the reaction of nitrogen monoxide with oxygen. NO2 is a respiratory irritant and may affect those with existing respiratory illness, including asthma. NO2 can also increase the risk of respiratory illness.

Respirable Particulate Matter and Fine Particulate Matter. PM10 refers to particulate matter (PM) with an aerodynamic diameter of 10 microns or less. PM2.5 refers to particulate matter with an aerodynamic diameter of 2.5 microns or less. Particulate matter in these size ranges has been determined to have the potential to lodge in the lungs and contribute to respiratory problems. PM10 and PM2.5 arise from a variety of sources, including road dust, diesel exhaust, fuel combustion, tire and brake wear, construction operations, and windblown dust. PM10 and PM2.5 can increase susceptibility to respiratory infections and can aggravate existing respiratory diseases such as asthma and chronic bronchitis. PM2.5 is considered to have the potential to lodge deeper in the lungs. Diesel particulate matter (DPM) is classified as a carcinogen by CARB.

Sulfur Dioxide. SO2 is a colorless, reactive gas that is produced from the burning of sulfur-containing fuels such as coal and oil and by other industrial processes. Generally, the highest concentrations of SO2 are found near large industrial sources. SO2 is a respiratory irritant that can cause narrowing of the airways leading to wheezing and shortness of breath. Long-term exposure to SO2 can cause respiratory illness and aggravate existing cardiovascular disease.

Lead. Lead in the atmosphere occurs as particulate matter. With the phase-out of leaded gasoline, large manufacturing facilities are the sources of the largest amounts of lead emissions. Lead has the potential to cause gastrointestinal, central nervous system, kidney, and blood diseases upon prolonged exposure.

Air Quality Technical Report for the
Santee Town Center Specific Plan Amendment | July 2024
7 Lead is also classified as a probable human carcinogen. Because emissions of lead are found only in projects that are permitted by the local air district, lead is not an air pollutant of concern for the proposed project.

2.1.2 Toxic Air Contaminants
Toxic air contaminants (TACs) are a diverse group of air pollutants that may cause or contribute to an increase in deaths or in serious illness, or that may pose a present or potential hazard to human health.

TACs can cause long-term health effects such as cancer, birth defects, neurological damage, asthma, bronchitis, or genetic damage, or short-term acute effects such as eye watering, respiratory irritation (a cough), runny nose, throat pain, and headaches. TACs may be carcinogenic or noncarcinogenic based on the nature of the health effects associated with exposure to the pollutant. For carcinogenic TACs, there is no level of exposure that is considered safe, and impacts are evaluated in terms of overall relative risk expressed as excess cancer cases per one million exposed individuals. Noncarcinogenic TACs differ in that there is generally assumed to be a safe level of exposure below which no negative health impact is believed to occur. These levels are determined on a pollutant-by-pollutant basis.

Diesel engines emit a complex mixture of air pollutants, including both gaseous and solid material. The solid material in diesel exhaust is referred to as DPM. Almost all DPM is 10 microns or less in diameter, and 90 percent of DPM is less than 2.5 microns in diameter (CARB 2024a). Because of their extremely small size, these particles can be inhaled and eventually trapped in the bronchial and alveolar regions of the lung. In 1998, CARB identified DPM as a TAC based on published evidence of a relationship between diesel exhaust exposure and lung cancer and other adverse health effects. DPM has a notable effect on California’s population—it is estimated that about 70 percent of total known cancer risk related to air toxics in California is attributable to DPM (CARB 2024a).

2.2 FEDERAL REGULATIONS

2.2.1 Clean Air Act
Air quality is defined by ambient air concentrations of specific pollutants identified by the USEPA to be of concern with respect to the health and welfare of the general public. The USEPA is responsible for enforcing the Federal Clean Air Act (CAA) of 1970 and its 1977 and 1990 Amendments. The CAA required the USEPA to establish National Ambient Air Quality Standards (NAAQS), which identify concentrations of pollutants in the ambient air below which no adverse effects on the public health and welfare are anticipated. In response, the USEPA established both primary and secondary standards for several criteria pollutants. The CAA allows states to adopt ambient air quality standards (AAQS) and other regulations provided they are at least as stringent as federal standards. Table 2, Ambient Air Quality Standards, shows the federal and state AAQS for these pollutants.

Air Quality Technical Report for the
Santee Town Center Specific Plan Amendment | July 2024
8 Table 2

AMBIENT AIR QUALITY STANDARDS
Pollutant Averaging
Time
California
Standards
Federal Standards
Primary1
Federal Standards
Secondary2
O3 1 Hour 0.09 ppm (180 µg/m3) – –
8 Hour 0.070 ppm (137 µg/m3) 0.070 ppm (137 µg/m3) Same as Primary PM10 24 Hour 50 µg/m3 150 µg/m3 Same as Primary
AAM 20 µg/m3 – Same as Primary
PM2.5 24 Hour – 35 µg/m3 Same as Primary
AAM 12 µg/m3 9 µg/m3 15.0 µg/m3
1 Hour 20 ppm (23 mg/m3) 35 ppm (40 mg/m3) –
CO 8 Hour 9.0 ppm (10 mg/m3) 9 ppm (10 mg/m3) –
8 Hour
(Lake Tahoe) 6 ppm (7 mg/m3
) – –
NO2 1 Hour 0.18 ppm (339 µg/m3) 0.100 ppm (188 µg/m3) – AAM 0.030 ppm (57 µg/m3) 0.053 ppm (100 µg/m3) Same as Primary 1 Hour 0.25 ppm (655 µg/m3) 0.075 ppm (196 µg/m3) –
SO2 3 Hour – – 0.5 ppm
(1,300 µg/m3)
24 Hour 0.04 ppm (105 µg/m3) – –
30-day Avg. 1.5 µg/m3 – –
Lead Calendar Quarter – 1.5 µg/m3 Same as Primary
Rolling
3-month Avg. – 0.15 µg/m3 Same as Primary
Visibility
Reducing
Particles
8 Hour
Extinction coefficient of

0.23 per km – visibility ≥
10 miles
No Federal
Standards
No Federal
Standards
Sulfates 24 Hour 25 µg/m3 No Federal
Standards
No Federal
Standards
Hydrogen
Sulfide 1 Hour 0.03 ppm (42 µg/m3
) No Federal
Standards
No Federal
Standards
Vinyl Chloride 24 Hour 0.01 ppm (26 µg/m3) No Federal
Standards
No Federal
Standards
Source: CARB 2016 and USEPA 2024b 1 National Primary Standards: The levels of air quality necessary, within an adequate margin of safety, to protect public health. 2 National Secondary Standards: The levels of air quality necessary to protect the public welfare from any known or anticipated adverse effects of a pollutant.

Note: More detailed information of the data presented in this table can be found at the CARB website (www.arb.ca.gov).

O3 = ozone; ppm = parts per million; µg/m3 = micrograms per cubic meter; PM10 = large particulate matter; AAM = Annual Arithmetic Mean; PM2.5 = fine particulate matter; CO = carbon monoxide; mg/m3 = milligrams per cubic meter; NO2 = nitrogen dioxide; SO2 = sulfur dioxide; km= kilometer; – = No Standard.

Areas that do no meet the AAQS for a particular pollutant are considered to be “nonattainment areas” for that pollutant. The air quality attainment status of the SDAB is shown in Table 3, San Diego Air Basin Attainment Status. On July 2, 2021, the SDAB was re-classified as a severe- nonattainment area for the 8-hour NAAQS for ozone (USEPA 2024c). The SDAB is an attainment area or unclassified for the NAAQS for all other criteria pollutants including PM10 and PM2.5. On February 7, 2024, the USEPA announced a final rule to lower the annual arithmetic mean (AAM) primary NAAQS for PM2.5 from 12 to 9 µg/m3 . The
new final rule retains the existing 24-hour primary NAAQS for PM2.5 of 35 µg/m3 and the existing Air Quality Technical Report for the
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9 AAM secondary NAAQS for PM2.5 of 15.0 µg/m3 (USEPA 2024b). As of this analysis, attainment classification for the 2024 primary AAM PM2.5 NAAQS has not been completed.

Table 3

SAN DIEGO AIR BASIN ATTAINMENT STATUS
Criteria Pollutant Federal Designation State of California Designation
Ozone (1-hour) No Federal Standard Nonattainment
Ozone (8-hour) Nonattainment Nonattainment
Coarse Particulate Matter (PM10) Unclassifiable1 Nonattainment Fine Particulate Matter (PM2.5) Attainment2 Nonattainment3 Carbon Monoxide (CO) Attainment Attainment
Nitrogen Dioxide (NO2) Attainment Attainment
Lead Attainment Attainment
Sulfur Dioxide (SO2) Attainment Attainment
Sulfates No Federal Standard Attainment
Hydrogen Sulfide No Federal Standard Unclassified
Visibility Reducing Particles No Federal Standard Unclassified Source: SDAPCD 2024a 1 At the time of designation, if the available data does not support a designation of attainment or nonattainment, the area is designated as unclassifiable. 2 The Federal attainment designation for the PM2.5 NAAQS reflects the designation for the 2012 NAAQS. As of this analysis, attainment classification for the 2024 primary AAM PM2.5 NAAQS has not been completed. 3 While data collected does meet the requirements for designation of attainment with federal PM2.5 standards, the data completeness requirements for state PM2.5 standards substantially exceed federal requirements and mandates and have historically not been feasible for most air districts to adhere to given local resources.

2.3 STATE REGULATIONS

2.3.1 California Clean Air Act
CARB has established the more stringent California Ambient Air Quality Standards (CAAQS) for the seven criteria air pollutants listed above through the California Clean Air Act of 1988 (CCAA), and has also established CAAQS for additional pollutants, including sulfates, hydrogen sulfide (H2S), vinyl chloride and visibility-reducing particles (see Table 2). Areas that do not meet the CAAQS for a particular pollutant are considered to be “nonattainment areas” for that pollutant. The SDAB is currently classified as a nonattainment area under the CAAQS for ozone (1-hour and 8-hour), PM10, and PM2.5 (SDAPCD 2024a).

The current state attainment status designations for the SDAB are provided in Table 3, above.

CARB is the state regulatory agency with the authority to enforce regulations to both achieve and maintain the NAAQS and CAAQS. The SDAPCD is responsible for developing and implementing the rules and regulations designed to attain the NAAQS and CAAQS, as well as the permitting of new or modified sources, developing of air quality management plans, and adopting and enforcing air pollution regulations for San Diego County (County).

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10 2.3.2 State Implementation Plan
The CAA requires areas with unhealthy levels of ozone, inhalable PM, CO, NO2, and SO2 to develop plans, known as State Implementation Plans (SIPs). SIPs are comprehensive plans that describe how an area will attain the NAAQS. The 1990 amendments to the CAA set deadlines for attainment based on the severity of an area's air pollution problem.

SIPs are not single documents—they are a compilation of new and previously submitted plans, programs (e.g., monitoring, modeling, permitting), district rules, state regulations and federal controls. Many of California's SIPs rely on a core set of control strategies, including emission standards for cars and heavy trucks, fuel regulations and limits on emissions from consumer products. State law makes CARB the lead agency for all purposes related to the SIP. Local air districts and other agencies prepare SIP elements and submit them to CARB for review and approval. CARB forwards the SIP revisions to the USEPA for approval and publication in the Federal Register. The Code of Federal Regulations Title 40, Chapter I, Part 52, Subpart F, Section 52.220 lists all the items that are included in the California SIP (CARB 2024b).

At any one time, several California submittals are pending USEPA approval.

2.3.3 California Energy Code
California Code of Regulations Title 24 Part 6, California’s Energy Efficiency Standards for Residential and Nonresidential Buildings, were first established in 1978 in response to a legislative mandate to reduce California’s energy consumption. Energy-efficient buildings require less electricity, natural gas, and other fuels. Electricity production from fossil fuels and on-site fuel combustion (typically for space and water heating) results primarily in off-site greenhouse gas (GHG) emissions.

2.3.4 Toxic Air Contaminants
The Health and Safety Code (Section 39655[a]) defines a TAC as “an air pollutant which may cause or contribute to an increase in mortality or in serious illness, or which may pose a present or potential hazard to human health.” A substance that is listed as a hazardous air pollutant pursuant to subsection (b) of Section 112 of the CAA (42 United States Code Section 7412[b]) is a TAC. Under State law, the California Environmental Protection Agency, acting through CARB, is authorized to identify a substance as a TAC if it determines the substance is an air pollutant that may cause or contribute to an increase in mortality or an increase in serious illness, or that may pose a present or potential hazard to human health.

2.3.5 California Health and Safety Code
The State of California Health and Safety Code Section 41700 prohibits emissions from any source whatsoever in such quantities of air contaminants or other material, which cause injury, detriment, nuisance, or annoyance to any considerable number of persons or to the public, or that endanger the comfort, repose, health, or safety of any of those persons or the public, or that cause, or have a natural tendency to cause, injury or damage to business or property. Health and Safety Code Section 41705 states that these regulations do not apply to odors emanating from agricultural operations necessary for the growing of crops or the raising of fowl or animals; operations that produce, manufacture, or handle compost; or operations that compost green material or animal waste products derived from agricultural operations.

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11 2.4 LOCAL REGULATIONS

2.4.1 Attainment Plan
The SDAPCD and SANDAG are responsible for developing and implementing the clean air plan for attainment and maintenance of the ambient air quality standards in the SDAB. The regional air quality plan for San Diego County for attainment of the NAAQS is SDAPCD’s 2020 Plan for Attaining the National Ambient Air Quality Standards for Ozone in San Diego County (Attainment Plan; SDAPCD 2020). The Attainment Plan, which would be a revision to the SIP, outlines SDAPCD’s plans and control measures designed to attain the NAAQS for ozone. For attainment of the CAAQS, the SDAPCD must prepare an updated State Ozone Attainment Plan to identify possible new actions to further reduce emissions.

Initially adopted in 1992, the Regional Air Quality Strategy (RAQS) identifies measures to reduce emissions from sources regulated by the SDAPCD, primarily stationary sources such as industrial operations and manufacturing facilities. The RAQS is periodically updated to reflect updated information on air quality, emission trends, and new feasible control measures, and was last updated in 2023 (SDAPCD 2023). These plans accommodate emissions from all sources, including natural sources, through implementation of control measures, where feasible, on stationary sources to attain the standards. Mobile sources are regulated by the USEPA and CARB, and the emissions and reduction strategies related to mobile sources are considered in the Attainment Plan, RAQS, and SIP.

2.4.2 San Diego Air Pollution Control District Rules and Regulations Future development pursuant to the project would be required to comply with SDAPCD Rules and Regulations which require the incorporation of BMPs during construction to reduce emissions of fugitive dust.

Rule 50 (Visible Emissions)
Particulate matter pollution impacts the environment by decreasing visibility (haze). These particles vary greatly in shape, size, and chemical composition, and come from a variety of natural and manufactured sources. Some haze-causing particles are directly emitted to the air such as windblown dust and soot.

Others are formed in the air from the chemical transformation of gaseous pollutants (e.g., sulfates, nitrates, organic carbon particles) which are the major constituents of PM2.5. These fine particles, caused largely by combustion of fuel, can travel hundreds of miles causing visibility impairment.

Visibility reduction is probably the most apparent symptom of air pollution. Visibility degradation is caused by the absorption and scattering of light by particles and gases in the atmosphere before it reaches the observer. As the number of fine particles increases, more light is absorbed and scattered, resulting in less clarity, color, and visual range. Light absorption by gases and particles is sometimes the cause of discolorations in the atmosphere but usually does not contribute very significantly to visibility degradation. Scattering by particulates impairs visibility much more readily. SDAPCD Rule 50 (Visible Emissions) sets emission limits based on the apparent density or opacity of the emissions using the Ringelmann scale (SDAPCD 1997).

Rule 51 (Nuisance)
SDAPCD Rule 51 (Nuisance) states that a person shall not discharge from any source whatsoever such quantities of air contaminants or other material which cause injury, detriment, nuisance or annoyance Air Quality Technical Report for the
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12 to any considerable number of persons or to the public or which endanger the comfort, repose, health or safety of any such persons or the public or which cause or have a natural tendency to cause injury or damage to business or property. The provisions of the rule do not apply to odors emanating from agricultural operations in the growing of crops or raising of fowls or animals (SDAPCD 1976).

Rule 55 (Fugitive Dust Control)
SDAPCD Rule 55 (Fugitive Dust Control) requires action be taken to limit dust from construction and demolition activities from leaving the property line. Similar to Rule 50 (Visible Emissions), Rule 55 (Fugitive Dust Control) places limits on the amount of visible dust emissions in the atmosphere beyond the property line. It further stipulates that visible dust on roadways as a result of track-out/carry-out shall be minimized through implementation of control measures and removed at the conclusion of each workday using street sweepers (SDAPCD 2009).

Rule 67.0.1 (Architectural Coatings)
SDAPCD Rule 67.0.1 (Architectural Coatings) requires residential interior/exterior flat coatings to be less than or equal to 50 grams per liter VOC content and interior/exterior non-flat coatings to be less than or equal to 50 grams per liter VOC content. Coatings used for markings within parking areas are required to contain less than or equal to 100 grams per liter VOC content (SDAPCD 2021).

3.0 EXISTING CONDITIONS
The southern and northern portions of the project area are developed lands associated with commercial office buildings, residential development, and recreational activities (parks and baseball fields). The center of the project area is bisected by the San Diego River. The San Diego River flows through the eastern boundary of the project area and continues in an eastward direction until it exits the project area and continues in a mostly westward direction. An unnamed tributary to the San Diego River flows through the northern boundary of the project area and continues generally in a southward direction until it meets the San Diego River.

3.1 CLIMATE/METEOROLOGY
The climate in southern California, including the SDAB, is controlled largely by the large-scale meteorological condition that dominates the west coast of the United States: a seasonally semipermanent high-pressure cell centered over the northeastern Pacific Ocean, called the Pacific high, which keeps most storms from affecting the California coast. Areas within 30 miles of the coast in the San Diego region, including the project area, experience moderate temperatures and comfortable humidity.

Temperature inversion layers (inversions; layers of warmer air over colder air) affect air quality conditions significantly because they influence the mixing depth (i.e., the vertical depth in the atmosphere available for diluting air contaminants near the ground). The highest air pollutant concentrations in the SDAB generally occur during inversions. During the summer, worsened air quality conditions in the SDAB are created due to the interaction between the ocean surface and the lower layer of the atmosphere, creating a moist marine layer. An upper layer of warm air mass forms over the cool marine layer, preventing air pollutants from dispersing upward. Additionally, hydrocarbons (VOCs) and NOX react under the strong, abundant sunlight in the San Diego region, creating smog. Light, Air Quality Technical Report for the
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13 daytime winds, predominantly from the west, further aggravate the condition by driving the air pollutants inland, toward the foothills. During the fall and winter, declines in air quality are created due to CO and NOX emissions. High NOX levels usually occur during autumn or winter, on days with summerlike conditions.

The predominant wind direction in the vicinity of the project is from the west and the average wind speed is approximately six mph (Iowa Environmental Mesonet 2024). The annual average maximum temperature in the project area is approximately 78 degrees Fahrenheit (°F), and the annual average minimum temperature is approximately 52°F. Total precipitation in the project area averages approximately 12 inches annually. Precipitation occurs mostly during the winter and relatively infrequently during the summer (Western Regional Climate Center 2016).

3.2 EXISTING AIR QUALITY
The SDAPCD operates a network of ambient air monitoring stations throughout the County. The purpose of the monitoring stations is to measure ambient concentrations of the pollutants and determine whether the ambient air quality meets the CAAQS and the NAAQS. The El Cajon-Lexington Elementary School Monitoring Station, located at 533 First Street in El Cajon, approximately four miles south of the project site is representative of the climatological and topographical conditions at the project area. No monitoring station in San Diego County has PM10 monitoring data for the sampled period. Air quality data are shown on Table 4, Air Quality Monitoring Data.

Table 4

AIR QUALITY MONITORING DATA
Pollutant Standard 2020 2021 2022
Ozone (O3) – El Cajon-Lexington Elementary Station
Maximum concentration 1-hour period (ppm) 0.094 0.088 0.100 Maximum concentration 8-hour period (ppm) 0.083 0.077 0.088 Days above 1-hour state standard (>0.09 ppm) 0 0 1
Days above 8-hour state/federal standard (>0.070 ppm) 14 3 2 Fine Particulate Matter (PM2.5) – El Cajon-Lexington Elementary Station Maximum 24-hour concentration (µg/m3) 38.2 30.2 26.4
Measured Days above 24-hour federal standard (>35 µg/m3) 2 0 0 Annual average (µg/m3) 11.6 10.4 *
Exceed state and federal annual standard (12 µg/m3) No No * Nitrogen Dioxide (NO2) – El Cajon-Lexington Elementary Station Maximum 1-hour concentration (ppm) 0.044 0.038 0.036
Days above state 1-hour standard (0.18 ppm) 0 0 0
Days above federal 1-hour standard (0.100 ppm) 0 0 0
Annual average (ppm) 0.008 0.006 0.008
Exceed annual federal standard (0.053 ppm) No No No
Exceed annual state standard (0.030 ppm) No No No
Source: CARB 2024c.
ppm = parts per million; μg/m3 = micrograms per cubic meter, * = insufficient data available.

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14 3.3 SENSITIVE RECEPTORS
CARB and the Office of Environmental Health Hazard Assessment (OEHHA) have identified the following groups of individuals as the most likely to be affected by air pollution: the elderly over 65, children under 14, infants (including in utero in the third trimester of pregnancy), and persons with cardiovascular and chronic respiratory diseases such as asthma, emphysema, and bronchitis (CARB 2005; OEHHA 2015). Some land uses are considered more sensitive to air pollution than others due to the types of population groups or activities involved and are referred to as sensitive receptors.

Examples of these sensitive receptors are residences, schools, hospitals, and daycare centers.

4.0 METHODOLOGY AND SIGNIFICANCE CRITERIA

4.1 CRITERIA POLLUTANT EMISSIONS
Air emissions from mobile, area, and energy sources were calculated using the California Emissions Estimator Model (CalEEMod), version 2022.1. CalEEMod is a computer model used to estimate air emissions resulting from land development projects throughout the state of California. CalEEMod was developed by the California Air Pollution Control Officers Association (CAPCOA) in collaboration with the California air quality management and pollution control districts (CAPCOA 2022).

In brief, CalEEMod is a computer model that estimates criteria air pollutant and GHG emissions from mobile (i.e., vehicular) sources, area sources (fireplaces, woodstoves, and landscape maintenance equipment), energy use (electricity and natural gas used in space heating, ventilation, and cooling; lighting; and plug-in appliances), water use and wastewater generation, and solid waste disposal.

Emissions are estimated based on land use information input to the model by the user. In various places the user can input additional information and/or override the default assumptions to account for project- or location-specific parameters. For this assessment, the default parameters were relied upon unless otherwise described below. The CalEEMod output files are included as Appendix A to this report.

4.1.1 Construction Emissions
The quantity, duration, and intensity of construction activity influence the amount of construction emissions and related pollutant concentrations that occur at any one time. As such, the emission forecasts provided herein reflect a specific set of conservative assumptions based on the expected construction scenario wherein a relatively large amount of construction activity is occurring in a relatively intensive manner. Because of this conservative assumption, actual emissions could be less than those forecasted. If construction is delayed or occurs over a longer period, emissions could be reduced because of (1) a more modern and cleaner-burning construction equipment fleet mix than assumed in CalEEMod, and/or (2) a less intensive buildout schedule (i.e., fewer daily emissions occurring over a longer time interval).

The modeling recognizes the project must conform with SDAPCD Rule 67, as described in Section 2.4.2, limiting the VOC content of architectural coatings to 50 grams per liter and paved area coatings to 100 grams per liter. The modeling also recognizes that the project must perform fugitive dust control in accordance with the SDAPCD Rule 55 and the BMPs described in Section 1.3.4, specifically watering exposed areas twice per day, enforcing a 15-mph speed limit on unpaved surfaces, and maintaining a minimum moisture content of 12 percent for unpaved roads.

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15 4.1.1.1 Housing Element Sites
Construction emissions for HE sites 16A, 16B, 20A, and 20B were estimated based on the timeline provided by the project applicant, which assumes construction would begin in January 2025 and last approximately 18 months. It should be noted that there are currently no plans being reviewed nor projects entitled by the City for these sites. Construction activities would include site preparation, grading, building construction, architectural coatings, and paving. Construction is assumed to occur six days per week with equipment operating up to eight hours per day. Architectural coatings are assumed to occur concurrently with the last five months of building construction. The construction schedule assumed in the modeling is shown in Table 5, Housing Element Sites Anticipated Construction Schedule.

Table 5

HOUSING ELEMENT SITES ANTICIPATED CONSTRUCTION SCHEDULE Construction Activity Construction Period
Start
Construction Period
End
Number of
Working Days
Site Preparation 1/1/2025 1/23/2025 20
Grading 1/24/2025 3/17/2025 45
Building Construction 3/18/2025 5/28/2026 375
Architectural Coatings 1/1/2026 7/8/2026 162
Paving 5/29/2026 7/8/2026 35
Construction would require the use of heavy off-road equipment. Construction equipment estimates are based on default values in CalEEMod, Version 2022.1. Table 6, Housing Element Sites Construction Equipment Assumptions, presents a summary of the assumed equipment that would be involved in each stage of construction.

Table 6

HOUSING ELEMENT SITES CONSTRUCTION EQUIPMENT ASSUMPTIONS Equipment Horsepower Number Hours/Day
Site Preparation
Rubber Tired Dozers 367 3 8
Tractors/Loaders/Backhoes 84 4 8
Grading
Excavators 36 2 8
Graders 148 1 8
Rubber Tired Dozers 367 1 8
Scrapers 426 2 8
Tractors/Loaders/Backhoes 84 2 8
Building Construction
Cranes 367 2 4.4
Forklifts 82 4 7.5
Generator Sets 14 2 5
Tractors/Loaders/Backhoes 84 4 6.6
Welders 46 2 5
Architectural Coating
Air Compressors 37 1 6
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16 Equipment Horsepower Number Hours/Day
Paving
Pavers 81 2 8
Paving Equipment 89 2 8
Rollers 36 2 8
Source: CalEEMod
Worker commute trips and vendor delivery trips were modeled based on CalEEMod defaults. Worker trips are anticipated to vary between 18 and 1,279 trips per day, depending on construction phase. The CalEEMod default worker, vendor and haul trip distances were used in the model.

4.1.1.2 Remaining Town Center Specific Plan Land Uses
Construction-related activities are temporary, short-term sources of emissions. Sources of constructionrelated air emissions include construction equipment exhaust; construction-related trips by workers, delivery and hauling truck trips; and fugitive dust from grading activities. The quantity of air pollutants generated by the construction of projects within the proposed TCSP would vary depending upon the number of projects occurring simultaneously and the size of each individual project. Since the proposed TCSP is a land use plan that guides physical development for 20+ years, specific construction details such as the exact number and timing of all development projects are unknown. The intensity of construction activity associated with the proposed TCSP could be the same during each year. It is more likely, however, that some periods of construction (and associated emissions) would be more intense than other periods due to market conditions and population and housing demands.

While neither SDAPCD nor the City of Santee provides additional guidance on construction assumptions for plan-level analyses, some air districts such as the Sacramento Metropolitan Air Quality Management District (SMAQMD) suggest that lead agencies conservatively assume that construction-generated emissions associated with the build-out of a plan should be evaluated assuming 25 percent of the total land uses would be constructed in a single year (SMAQMD 2016). This conservative assumption was used to evaluate the potential construction-related air quality impacts from projects that could occur under the proposed TCSP Amendment. The land uses modeled in the 25 percent scenario are listed in Table 7, Land Use Profile – First Year of Construction. Modeling relied upon CalEEMod default activities, fleet mixes, and vehicle trips based on land use type and size.

Table 7
LAND USE PROFILE – FIRST YEAR OF CONSTRUCTION
Lande Use Acres Building Size
Retail 132.89 592,258 square feet
Regional Shopping 8.81 24,625 square feet
Civic/Institutional 45.74 187,223 square feet
Office Commercial 24.76 240,206 square feet
Park 59.36 59.36 acres
Residential (TC-R-14) 42.31 793 dwelling units
Residential (TC-R-22) 23.58 867 dwelling units
Note: HE Sites excluded, as they are provided in the analysis described in Section 4.1.1.1.

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17 Given that exhaust emissions from the construction equipment fleet are expected to decrease over time as stricter standards take effect, 25 percent of the construction emissions were conservatively modeled to occur in 2027, following delivery of the HE Sites. Additional details are available in Appendix A. As construction occurs in later years, advancements in engine technology, retrofits, and turnover in the equipment fleet are anticipated to result in lower levels of emissions.

4.1.2 Operational Emissions

4.1.2.1 Area Source Emissions
Area sources typically include emissions from landscaping equipment, the use of consumer products, the reapplication of architectural coatings for maintenance, and hearths. Project emissions associated with area sources were estimated using the CalEEMod default values except for hearths, as the project would not include wood burning stoves or fireplaces, or natural gas fireplaces.

4.1.2.2 Energy Emissions
Development within the project would use electricity for lighting, heating, and cooling. Natural gas and electricity would be supplied by San Diego Gas and Electric (SDG&E). Direct emissions from the burning of natural gas typically results from furnaces, hot water heaters, and kitchen appliances. Electricity generation typically entails the off-site generation of electricity, such as through combustion of fossil fuels, including natural gas and coal, which is then transmitted to end users. A building’s electricity use is thus associated with the off-site or indirect emission of GHGs at the source of electricity generation (power plant). CalEEMod conservatively assumes the use of natural gas appliances based on historical data while newer construction typically includes more electric appliances. Default natural gas and electricity demand quantities from CalEEMod were used in this analysis and the emissions factors for SDG&E provided in CalEEMod were applied to these energy demand values to calculate the resulting emissions.

4.1.2.3 Vehicular (Mobile) Sources
Operational emissions from mobile source emissions are associated with vehicle trip generation and trip length. Based on the project trip generation rate from the Local Transportation Study, the four strategic HE sites would generate 8,520 new average daily trips (ADT) while the remaining TCSP land uses would generate an additional 51,511 ADT (Intersecting Metrics 2024). Default vehicle speeds, trip purpose, and trip distances from CalEEMod were applied to these trips.

4.2 AIR QUALITY SIGNIFICANCE CRITERIA
Thresholds used to evaluate potential air quality and odor impacts are based on applicable criteria in the State’s California Environmental Quality Act Guidelines Appendix G. A significant air quality and/or odor impact could occur if the implementation of the proposed project would:

1. Conflict with or obstruct implementation of the Attainment Plan or applicable portions of the SIP;

2. Result in a cumulatively considerable net increase of any criteria pollutant for which the SDAB is non-attainment under an applicable NAAQS or CAAQS;
Air Quality Technical Report for the
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18 3. Expose sensitive receptors to substantial pollutant concentrations; or

4. Result in other emissions (such as those leading to odors) adversely affecting a substantial number of people.

To determine whether the project would result in a cumulatively considerable net increase of PM10, PM2.5, or the ozone precursors NOX and VOCs, emissions were evaluated based on the quantitative emission thresholds established by the SDAPCD and SCAQMD. As part of its air quality permitting process, the SDAPCD has established thresholds in Rule 20.2 for the preparation of Air Quality Impact Assessments (SDAPCD 2019). Rule 20.2 does not contain thresholds for VOCs. The SDAPCD and City of Santee do not have thresholds related to VOCs; therefore, this analysis considers guidance provided by the County of San Diego to consider the impact of VOC emissions. The County recommends the use of the SCAQMD (Coachella Valley portion) screening level established for VOCs, as these thresholds are generally stricter emissions thresholds than established by the SDAPCD. Therefore, to evaluate the significance of VOC emissions, this analysis used the SCAQMD daily threshold and its annual equivalent (County 2007).

These screening criteria were used as numeric methods to determine if the project would result in a significant impact to air quality or an adverse effect on human health. The screening thresholds are shown in Table 8, Screening-level Thresholds for Air Quality Impact Analysis.

Table 8

SCREENING-LEVEL THRESHOLDS FOR AIR QUALITY IMPACT ANALYSIS Emissions
Pollutant Pounds per
Hour
Pounds per
Day
Tons per
Year
Respirable Particulate Matter (PM10) -- 100 15
Fine Particulate Matter (PM2.5) -- 67 10
Oxides of Nitrogen (NOX) 25 250 40
Oxides of Sulfur (SOX) 25 250 40
Carbon Monoxide (CO) 100 550 100
Lead and Lead Compounds -- 3.2 0.6
Volatile Organic Compounds (VOC) -- 75 13.7
Toxic Air Contaminant Emissions
Excess Cancer Risk 1 in 1 million
10 in 1 million with T-BACT
Non-Cancer Hazard 1.0
Source: SDAPCD 2019; County 2007
T-BACT = Toxics-Best Available Control Technology
SDAPCD Rule 51 (Nuisance) prohibits emissions from any source whatsoever in such quantities of air contaminants or other material, which cause injury, detriment, nuisance, or annoyance to the public health or damage to property. Impacts from odors are subjective by nature and their measurements are difficult to quantify. As a result, analysis related to this threshold is qualitative and focuses on the nature of the project’s uses, existing and potential surrounding uses and location of sensitive receptors. It is generally accepted that the considerable number of persons requirement in Rule 51 is normally satisfied when 10 different individuals/households have made separate complaints within 90 days. Odor Air Quality Technical Report for the
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19 complaints from a “considerable” number of persons or businesses in the area would be considered to be a significant, adverse odor impact.

5.0 Impact Analysis

5.1 ISSUE 1: CONSISTENCY WITH THE ATTAINMENT PLAN
The Attainment Plan outlines SDAPCD’s plans and control measures designed to attain the NAAQS for ozone. In addition, the SDAPCD relies on the SIP, which includes the SDAPCD’s plans and control measures for attaining the ozone NAAQS. These plans accommodate emissions from all sources, including natural sources, through implementation of control measures, where feasible, on stationary sources to attain the standards. Mobile sources are regulated by the USEPA and CARB, and the emissions and reduction strategies related to mobile sources are considered in the Attainment Plan and SIP.

The Attainment Plan relies on information from CARB and SANDAG, including projected growth in the County and mobile, area, and all other source emissions, to project future emissions and determine the strategies necessary for the reduction of stationary source emissions through regulatory controls. CARB mobile source emission projections and SANDAG growth projections are based on population and vehicle trends and land use plans developed by cities and the County. As such, projects that propose development consistent with the growth anticipated by the local general plans would be consistent with the Attainment Plan. If a project proposes development which is less dense than anticipated within the applicable General Plan, the project would likewise be consistent with the Attainment Plan. If a project proposes development that is greater than that anticipated in the applicable General Plan and SANDAG’s growth projections upon which the Attainment Plan is based, the project may be in conflict with the Attainment Plan and SIP and may have a potentially significant impact on air quality. This situation would warrant further analysis to determine if the project and the surrounding projects exceed the growth projections used in the Attainment Plan for the specific subregional area.

5.1.1 Town Center Specific Plan
As described above, the Attainment Plan and RAQS outline the steps needed to accomplish attainment of NAAQS and CAAQS by the earliest practicable date. Projects that would be consistent with adopted land use designations would not conflict with the plans. Projects that would not be consistent with the land uses may be inconsistent with the plans and warrant further analysis to determine consistency. If it can be demonstrated that changes in land uses would generate fewer air emissions than land uses that are consistent with adopted land use designations, the changes would not conflict with the Attainment Plan or RAQS.

The project would result in a comprehensive update to the existing TCSP involving expanding the TCSP area by 42 acres, updating the boundaries of the TCSP districts to create five neighborhoods within the TCSP, and identifying potential future residential and non-residential development potential within the TCSP area. Although development regulations and design criteria in the TCSP would replace the current TCSP regulations, development densities and intensities currently allowed throughout the TCSP area would not be increased by the project. As a result, the project would not increase the amount of vehicle traffic expected to be generated in the City. Similarly, the project would not increase the amount of traffic in the City and would not result in an increase in the average VMT per capita. As buildout of the project would not result in an increase in anticipated development or traffic generation over what Air Quality Technical Report for the
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20 would occur under buildout of the adopted zoning and land use designations, the project would not result in an increase in emissions that are not already accounted for in the Attainment Plan or RAQS.

Therefore, buildout of the TCSP would not exceed the assumptions used to develop the Attainment Plan or RAQS, and impacts would be less than significant.

5.1.2 Arts and Entertainment Neighborhood
The TCSP would involve updated development standards and land use allowances with the AEN.

However, because there is no change to allowed densities and intensities compared to existing zoning, buildout of the project would not result in traffic generation over what would occur under buildout of the adopted zoning and land use designations. Therefore, the project would not result in an increase in emissions that are not already accounted for in the Attainment Plan and RAQS.

Therefore, buildout of the AEN would not exceed the assumptions used to develop the Attainment Plan or RAQS, resulting in a less than significant impact.

5.1.3 Housing Element Sites
The project assumes the development of Housing Element sites 16A, 16B, 20A, and 20B consistent with the densities and intensities allowed by existing zoning, the 2021-2029 Housing Element, and state density bonus law. When compared to the existing zoning and land use designations, the project would not increase the development potential allowed at the four Housing Element sites, which would also not increase the amount of projected vehicle traffic generated in the City. The project would not increase the projected amount of traffic in the City and would not result in an increase in the average VMT per capita. As buildout of the project would not result in an increase in development or traffic generation over what would occur under buildout of the adopted zoning and land use designations, the project would not result in an increase in emissions that are not already accounted for in the Attainment Plan or RAQS.

Future development within Housing Element sites 16A, 16B, 20A, and 20B would not result in an increase in development or an increase in traffic generation over what would occur under buildout of the adopted zoning and land use designations and would therefore not result in an increase in emissions. Therefore, buildout of Housing Element sites 16A, 16B, 20A, and 20B would not exceed the assumptions used to develop the Attainment Plan or RAQS, resulting in a less than significant impact.

5.2 ISSUE 2: CUMULATIVELY CONSIDERABLE NET INCREASE OF

NONATTAINMENT CRITERIA POLLUTANTS
The project would generate criteria pollutants in the short-term during construction and the long-term during operation. To determine whether a project would result in a cumulatively considerable net increase in criteria pollutant emissions for which the project region is in non-attainment under an applicable federal or state AAQS, the project’s emissions are evaluated based on the quantitative emission thresholds established by the SDAPCD and applicable law (as shown in Table 8). The SDAB is in non-attainment for ozone (VOCs and NOX are precursors), PM10, and PM2.5.

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21 5.2.1 Construction Criteria Pollutant and Precursor Emissions Construction emissions are described as “short-term” or temporary in duration; however, they have the potential to represent a significant impact with respect to air quality. Construction of the project would result in the temporary generation of VOC, NOX, CO, SO2, PM10, and PM2.5 emissions. VOC, NOX, CO, and SO2 emissions are primarily associated with mobile equipment exhaust, including off-road construction equipment and on-road motor vehicles. Fugitive PM dust emissions are primarily associated with site preparation and vary as a function of such parameters as soil silt content, soil moisture, wind speed, acreage of disturbance area, and VMT by construction vehicles.

The project’s temporary construction emissions were estimated using CalEEMod as described in Section 4.1 with emissions estimated separately for the four strategic HE sites and the rest of the TCSP.

The results of the modeling of the project’s construction emissions of criteria pollutants and ozone precursors are shown in Table 9, Maximum Daily Construction Emissions. The data are presented as the maximum anticipated daily emissions for comparison with the applicable daily thresholds. The complete CalEEMod output is provided in Appendix A to this report.

Table 9

MAXIMUM DAILY CONSTRUCTION EMISSIONS
Pollutant Emissions (pounds/day)
Source VOC NOX CO SOX PM10 PM2.5
Four Strategic HE Sites 64.0 31.7 75.0 0.1 12.4 5.2
Town Center Specific Plan 12.0 95.2 121.1 0.2 20.0 10.0 Maximum Daily Emissions 64.0 95.2 121.1 0.2 20.0 10.0
Daily Thresholds 75 250 550 250 100 67
Exceed Thresholds? No No No No No No
Source: CalEEMod; SDAPCD 2019; County 2007
HE = Housing Element; VOC = volatile organic compound; NOX = nitrogen oxides; CO = carbon monoxide; SOX = sulfur oxides; PM10 = particulate matter 10 microns or less in diameter; PM2.5 = particulate matter 2.5 microns or less in diameter As shown in Table 9, the project’s temporary construction-related criteria pollutant and precursor emissions would be below the SDAPCD’s emission thresholds, including for those pollutants for which the SDAB is non-attainment (VOC, NOX, PM10, PM2.5). Therefore, the project’s construction activities would not result in a cumulatively considerable net increase of criteria pollutant for which the project region is non-attainment under an applicable federal or state AAQS. Construction-related impacts would be less than significant.

5.2.2 Operational Criteria Pollutant and Precursor Emissions The project’s long-term maximum daily operational emissions were estimated using CalEEMod as described in Section 4.2 with emissions estimated separately for the four strategic HE sites and the rest of the TCSP. The results of the modeling of the project’s operational emissions of criteria pollutants and precursors are shown in Table 10, Maximum Daily Operational Emissions. The data are presented as the maximum anticipated daily emissions for comparison with the applicable thresholds. The complete CalEEMod output is provided in Appendix A to this report.

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22 Table 10

MAXIMUM DAILY OPERATIONAL EMISSIONS
Pollutant Emissions (pounds/day)
Source VOC NOX CO SOX PM10 PM2.5
Four Strategic HE Sites
Mobile 33.1 23.5 219.8 0.5 44.9 11.7
Area 41.5 <0.1 83.9 <0.1 <0.1 <0.1
Energy 0.2 3.8 1.6 <0.1 0.3 0.3
Total Daily HE Site Emissions1 74.8 27.2 305.4 0.5 45.2 12.0 Daily Thresholds 75 250 550 250 100 67
Exceed Daily Thresholds? No No No No No No
Town Center Specific Plan
Mobile 167.0 105.5 1,197.2 3.3 332.0 85.4
Area 114.3 <0.1 224.5 <0.1 0.2 0.1
Energy 0.9 15.3 8.3 0.1 1.2 1.2
Total Daily TCSP Emissions1 282.3 120.8 1,430.0 3.4 333.4 86.7 Daily Thresholds 75 250 550 250 100 67
Exceed Daily Thresholds? Yes No Yes No Yes Yes
Source: CalEEMod (Appendix A); SDAPCD 2019; County 2007 1 Totals may not sum due to rounding.

HE = Housing Element; VOC = volatile organic compound; NOX = nitrogen oxides; CO = carbon monoxide; SOX = sulfur oxides; PM10 = particulate matter 10 microns or less in diameter; PM2.5 = particulate matter 2.5 microns or less in diameter As shown in Table 10 the long-term emissions of criteria pollutants and precursors generated by the four strategic HE sites would not exceed the SDAPCD daily screening thresholds, including for those pollutants for which the SDAB is non-attainment (VOC, NOX, PM10, PM2.5). Therefore, the HE sites’ operational activities would not result in a cumulatively considerable net increase of any criteria pollutant for which the project region is non-attainment under an applicable federal or state AAQS.

However, full buildout of the TCSP would result in exceedances to SDAPCD’s daily screening thresholds for VOC, CO, PM10, and PM2.5.

5.2.3 Mitigation Framework
On-road vehicles represent the primary source of operational emissions. The project includes several transportation projects including adding new multi-use pathways and bike routes to existing roadways as well as identifying roadway connections throughout the TCSP area and AEN. The TCSP identifies improvements along portions of existing Cuyamaca Street and Riverview Parkway, and identifies new roadways including Riverview Parkway, Cottonwood Avenue, Main Street, and Park Center Drive. The roadway improvements on Cuyamaca Street and Riverview Parkway would contribute to the multimodal transportation network by providing new bicycle and pedestrian facilities on those roadways, which would promote non-auto use. Additionally, the proposed roadway connections along Riverview Parkway, Cottonwood Avenue, Main Street, and Park Center Drive would provide direct connections through the TCSP area and AEN, as well as onto major arterial roadways and would improve traffic congestion in the area. The transportation projects identified in the TCSP meet the City’s VMT Analysis Guidelines screening criteria of “closing gaps in the transportation network” and/or “adding new or enhanced bicycle or pedestrian facilities on existing streets” and are presumed not to increase vehicle travel. The transportation projects identified in the TCSP are intended to increase pedestrian and bicycle safety and connection within the TCSP area to aid in the reduction of VMT and mobile source emissions.

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23 No specific development proposals are included for the programmatic elements of the project in the TCSP area and AEN, thus rendering the transportation projects’ effects on VMT not readily quantifiable.

As such, there would be no feasible mitigation to reduce the mobile source emissions.

The following mitigation measure would reduce potential area source emissions of the Project:

AQ-1 Use of electrically powered landscape equipment. Electric receptacles/outlets shall be installed at the exterior of all single-family units, all multi-family buildings (including those with affordable units), and all common area buildings, so that homeowners and landscape contractors hired by the homeowners’ association may utilize electrically powered lawnmowers, leaf blowers, and chainsaws. Project plans shall include: (1) all necessary receptacles/outlets; and (2) a note that states “All landscape maintenance contracts provided by the applicable homeowners association must require that landscape contractors use electrically powered lawn mowers, leaf blowers, and chain saws.” City staff must verify both requirements prior to approval of the final plans.

5.2.4 Significance After Mitigation
Electric lawn equipment including lawn mowers, leaf blowers, and chain saws are available. When electric landscape equipment is used in place of conventional gas-powered equipment, direct emissions from fossil fuel combustion are eliminated. Implementation of Measure AQ–1 would result in an average reduction of area source related VOC emissions by 20 percent (from 114.3 pounds per day to

91.5 pounds per day) and the virtual elimination of CO and particulate matter emissions. As shown in Table 11, Maximum Daily Operational Emissions with Mitigation, with implementation of mitigation measure AQ–1, VOC, CO, PM10, PM2.5 emissions would be reduced, but remain above their respective threshold.

Table 11

MAXIMUM DAILY OPERATIONAL EMISSIONS WITH MITIGATION
Pollutant Emissions (pounds/day)
Source VOC NOX CO SOX PM10 PM2.5
Town Center Specific Plan
Mobile 167.0 105.5 1,197.2 3.3 332.0 85.4
Area 91.5 <0.1 <0.1 <0.1 <0.1 <0.1
Energy 0.9 15.3 8.3 0.1 1.2 1.2
Total Daily TCSP Emissions1 259.4 120.8 1,205.5 3.4 333.2 86.6 Daily Thresholds 75 250 550 250 100 67
Exceed Daily Thresholds? Yes No Yes No Yes Yes
Source: CalEEMod (Appendix A); SDAPCD 2019; County 2007 1 Totals may not sum due to rounding.

VOC = volatile organic compound; NOX = nitrogen oxides; CO = carbon monoxide; SOX = sulfur oxides; PM10 = particulate matter 10 microns or less in diameter; PM2.5 = particulate matter 2.5 microns or less in diameter Impacts related to operational emissions from full buildout of the TCSP would be significant and unavoidable.

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24 5.3 ISSUE 3: IMPACTS TO SENSITIVE RECEPTORS
The third threshold requires the evaluation of whether the project would expose sensitive receptors to substantial pollutant concentrations. Impacts to sensitive receptors are typically analyzed for operational period CO hotspots and exposure to TACs. An analysis of the project’s potential to generate these pollutants thereby exposing existing sensitive receptors to these pollutants is provided below.

5.3.1 Localized Carbon Monoxide Hotspots
CO concentration is a direct function of motor vehicle activity (e.g., idling time and traffic flow conditions) particularly during peak commute hours and meteorological conditions. Under specific meteorological conditions (e.g., stable conditions that result in poor dispersion), CO concentrations may reach unhealthy levels with respect to local sensitive land uses such as residential areas, schools, and hospitals.

A CO hotspot is an area of localized CO pollution caused by severe vehicle congestion on major roadways, typically near intersections. If a project increases average delay at signalized intersections operating at level of service (LOS) E or F or causes an intersection that would operate at LOS D or better without the project to operate at LOS E or F with the project, a quantitative screening is recommended.

The project includes several transportation projects including adding new multi-use pathways and bike routes to existing roadways as well as identifying roadway connections throughout the TCSP area and AEN. The TCSP identifies improvements along portions of existing Cuyamaca Street and Riverview Parkway, and identifies new roadway connections including Riverview Parkway, Cottonwood Avenue, Main Street, and Park Center Drive. The roadway improvements on Cuyamaca Street and Riverview Parkway would contribute to the multimodal transportation network by providing new bicycle and pedestrian facilities on those roadways, which would promote non-auto use. Additionally, the proposed roadway connections along Riverview Parkway, Cottonwood Avenue, Main Street, and Park Center Drive would provide direct connections through the TCSP area and AEN, as well as onto major arterial roadways and would improve traffic congestion in the area. The transportation projects identified in the TCSP meet the City’s VMT screening criteria of “closing gaps in the transportation network” and/or “adding new or enhanced bicycle or pedestrian facilities on existing streets” and are presumed not to increase vehicle travel or intersection delay. Therefore, air quality impacts related to the exposure of sensitive receptors to substantial CO concentrations due to project traffic would be less than significant.

5.3.2 Exposure to Toxic Air Contaminants
In addition to impacts from criteria pollutants, project impacts may include emissions of pollutants identified by the state as TACs. State law has established the framework for California’s TAC identification and control program, which is generally more stringent than the federal program. The state has formally identified more than 200 substances as TACs and is adopting appropriate control measures for their sources. The greatest potential for TAC emissions during construction would be emissions of DPM from heavy equipment operations and heavy-duty trucks. The following measures are required by state law to reduce DPM emissions:
• Fleet owners of mobile construction equipment are subject to the CARB Regulation for In-use Off-road Diesel Vehicles (13 CCR 2449), the purpose of which is to reduce DPM and criteria pollutant emissions from in-use (existing) off-road diesel-fueled vehicles.

Air Quality Technical Report for the
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25 • All commercial diesel vehicles are subject to Title 13, Section 2485 of the California Code of Regulations, limiting engine idling time. Idling of heavy-duty diesel construction equipment and trucks during loading and unloading shall be limited to five minutes; electric auxiliary power units should be used whenever possible.

Health effects from carcinogenic air toxics are usually described in terms of cancer risk. As shown in Table 8, the recommended incremental cancer risk threshold is 10 in a million. “Incremental cancer risk” is the net increased likelihood that a person continuously exposed to concentrations of TACs resulting from a project over a 9-, 30-, and 70-year exposure period will develop cancer based on the use of standard OEHHA risk-assessment methodology.

Generation of DPM from construction projects typically occurs in a localized area (e.g., near locations with multiple pieces of heavy construction equipment working in close proximity) for a short period of time. Because construction activities and subsequent emissions vary depending on the phase of construction, the construction-related emissions to which nearby receptors are exposed to would also vary throughout the construction period. Concentrations of DPM emissions are typically reduced by 70 percent at approximately 500 feet (CARB 2005).

The dose of TACs to which receptors are exposed is the primary factor used to determine health risk.

Dose is a function of the concentration of a substance in the environment and the extent of exposure a person has with the substance; a longer exposure period to a source of emissions would result in higher health risks. Current models and methodologies for conducting cancer health risk assessments are associated with longer-term exposure periods (typically 30 years for individual residents based on guidance from OEHHA) and are best suited for evaluation of long duration TAC emissions with predictable schedules and locations. These assessment models and methodologies do not correlate well with the temporary and highly variable nature of construction activities.

Cancer potency factors are based on animal lifetime studies or worker studies where there is long-term exposure to the carcinogenic agent. There is considerable uncertainty in trying to evaluate the cancer risk from projects that will only last a small fraction of a lifetime (OEHHA 2015). Moreover, as shown in Table 9, maximum daily particulate matter (i.e., PM10 or PM2.5) emissions generated by construction equipment operation and haul-truck trips during construction (exhaust particulate matter, or DPM), combined with fugitive dust generated by equipment operation and vehicle travel, would be well below the SDAPCD screening-level thresholds. Considering this information, and the fact that any concentrated use of heavy construction equipment would occur at various locations throughout the project site only for short durations, construction of the project would not expose sensitive receptors to substantial DPM concentrations, and the impact would be less than significant.

Additionally, CARB has published the Air Quality and Land Use Handbook: A Community Health Perspective (CARB 2005), which identifies certain types of facilities or sources that may emit substantial quantities of TACs and therefore could conflict with sensitive land uses, such as “schools and schoolyards, parks and playgrounds, daycare centers, nursing homes, hospitals, and residential communities.” The Air Quality and Land Use Handbook: A Community Health Perspective is a guide for siting new sensitive land uses. The enumerated facilities or sources include the following:
• High-traffic freeways and roads,
• Distribution centers,
• Rail yards,
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26 • Ports,
• Refineries,
• Chrome plating facilities,
• Dry cleaners, and
• Large gas dispensing facilities.

CARB recommends that sensitive receptors not be located downwind or in proximity to such sources to avoid potential health hazards.

The project would not include any of the previously listed land uses, so it would not expose visitors, residents, or employees of the project to TAC emissions from these sources. Impacts would be less than significant.

5.4 ISSUE 4: ODORS
The fourth threshold requires an analysis of whether the project results in other emissions (such as those leading to odors) adversely affecting a substantial number of people. As discussed in Section 2, the State of California Health and Safety Code Sections 41700 and 41705, and SDAPCD Rule 51, prohibit emissions from any source whatsoever in such quantities of air contaminants or other material which cause injury, detriment, nuisance, or annoyance to the public health or damage to property. Any unreasonable odor discernible at the property line of the project site would be considered a significant odor impact.

The project could produce odors during proposed construction activities from construction equipment exhaust, application of asphalt, and/or the application of architectural coatings; however, compliance with the above referenced nuisance laws during construction would ensure that odor emissions would not adversely affect a substantial number of people. While odors related to construction may be perceptible, as described above, construction emissions would not result in pollutant concentrations that would be hazardous for sensitive receptors. Furthermore, odors emitted during construction would be temporary, short-term, localized to the immediate vicinity of the equipment, and intermittent in nature, and would cease upon the completion of the respective phase of construction. Accordingly, the proposed project would not create objectionable odors affecting a substantial number of people during construction, and impacts would be less than significant.

According to CARB, land uses associated with odor complaints include agricultural uses, wastewater treatment plants, food processing plants, chemical plants, industrial activities, composting, refineries, landfills, recycling facilities, dairies, and fiberglass molding facilities (CARB 2005). Once operational, future development implemented under the project would include residential and associated commercial uses that are generally not a source of objectionable odors. Therefore, project operation would not result in odors affecting a substantial number of people, and impacts would be less than significant.

Air Quality Technical Report for the
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27 6.0 List of Preparers
HELIX Environmental Planning, Inc.
7578 El Cajon Boulevard
La Mesa, CA 91942
Victor Ortiz Senior Air Quality Specialist
Yara Fisher, AICP Project Manager
Air Quality Technical Report for the
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28 7.0 REFERENCES
California Air Pollution Control Officers Association (CAPCOA). 2022. User Guide for CalEEMod Version 2022.1. April. Available at: https://www.caleemod.com/user-guide.

California Air Resources Board (CARB). 2024a. Overview: Diesel Exhaust and Health. Available at:
https://ww2.arb.ca.gov/resources/overview-diesel-exhaust-and-health. Accessed February 7. 2024b. California State Implementation Plan, About. Available at: https://ww2.arb.ca.gov/ourwork/programs/california-state-implementation-plans/about. Accessed February 24. 2024c. iADAM Air Quality Data Statistics: Top 4 Summary. Available at:
https://www.arb.ca.gov/adam/topfour/topfour1.php. Accessed February 8. 2016. Ambient Air Quality Standards. May 4. Available at:
https://ww2.arb.ca.gov/sites/default/files/2020-03/aaqs2_0.pdf. 2005. Air Quality and Land Use Handbook: A Community Health Perspective. April. Available at:
https://ww2.arb.ca.gov/our-work/programs/resource-center/strategy-development/land-useresources.

Intersecting Metrics. 2024. Local Transportation Study – Santee Town Center Specific Plan. March Iowa Environmental Mesonet. 2024. San Diego Gillespie Windrose Plot. Available at:
https://mesonet.agron.iastate.edu/sites/windrose.phtml?station=SEE&network=CA_ASOS.

Accessed February 8.

Office of Environmental Health Hazard Assessment (OEHHA). 2015. Air Toxics Hot Spots Program Guidance Manual for Preparation of Health Risk Assessments. February. Available at:
https://oehha.ca.gov/media/downloads/crnr/2015guidancemanual.pdf.

Sacramento Metropolitan Air Quality Management District (SMAQMD). 2016. Program Level Analysis of General Plans and Area Plans. Available at
http://www.airquality.org/LandUseTransportation/Documents/Ch9ProgramLevelFINAL8- 2016.pdf. Accessed February 2024.

San Diego County Air Pollution Control District (SDAPCD). 2024a. Attainment Status. Available at:
https://www.sdapcd.org/content/sdapcd/planning/attainment-status.html. Accessed February 7.
2023. 2022 Regional Air Quality Strategy (RAQS). Available at:
https://www.sdapcd.org/content/dam/sdapcd/documents/grants/planning/Att.%20A%20- %202022%20RAQS.pdf.
2021. Rule 67.0.1 Architectural Coatings. February 10. Available at:
https://www.sdapcd.org/content/dam/sdapcd/documents/rules/current-rules/Rule-67.0.1- eff010122.pdf.

Air Quality Technical Report for the
Santee Town Center Specific Plan Amendment | July 2024
29 San Diego County Air Pollution Control District (SDAPCD) (cont.) 2020. Final Ozone Attainment Plan for San Diego County. Updated October. Available at:
https://www.sdapcd.org/content/sdapcd/planning.html.
2019. Rule 20.2 New Source Review Non-Major Stationary Sources. Revised June 26. Available at: https://www.sdapcd.org/content/dam/sdapcd/documents/rules/current-rules/Rule20.2.pdf. 2009. Rule 55 Fugitive Dust Control. June 24. Available at:
https://www.sdapcd.org/content/dam/sdapcd/documents/rules/current-rules/Rule-55.pdf. 1997. Rule 50 Visible Emissions. August 13. Available at:
https://www.sdapcd.org/content/dam/sdapcd/documents/rules/current-rules/Rule-50.pdf. 1976. Rule 51 Nuisance. November 8. Available at:
https://www.sdapcd.org/content/dam/sdapcd/documents/rules/current-rules/Rule-51.pdf.

San Diego, County of (County). 2007. County of San Diego Guidelines for Determining Significance and Report Format and Content Requirements, Air Quality. March 19.

U.S. Environmental Protection Agency (USEPA). 2024a. Criteria Air Pollutants. Last updated August 9.

Available at: https://www.epa.gov/criteria-air-pollutants. Accessed February 7. 2024b. Final Rule to Strengthen the National Air Quality Health Standard for Particulate Matter Fact Sheet. Available at: https://www.epa.gov/system/files/documents/2024-02/pm-naaqsoverview.pdf. 2024c. Federal Register Notices Related to 8-Hour Ozone (2015) Designations and Classifications. Available at:
https://www3.epa.gov/airquality/greenbook/jfrnrpt2.html#Ozone_8-hr.2015.San_Diego.

Accessed February 7.

Western Regional Climate Center. 2016. Western U.S. Climate Summaries, California, El Cajon (042706).

Available at: https://wrcc.dri.edu/cgi-bin/cliMAIN.pl?ca2706. Accessed February 8, 2024.

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Appendix A
CalEEMod Output
Santee TCSP HE Sites Detailed Report, 2/29/2024
Santee TCSP HE Sites 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

2.4. Operations Emissions Compared Against Thresholds

2.5. Operations Emissions by Sector, Unmitigated

3. Construction Emissions Details

3.1. Site Preparation (2025) - Unmitigated

3.3. Grading (2025) - Unmitigated

3.5. Building Construction (2025) - Unmitigated

3.7. Building Construction (2026) - Unmitigated
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3.9. Paving (2026) - Unmitigated

3.11. Architectural Coating (2026) - Unmitigated

4. Operations Emissions Details

4.1. Mobile Emissions by Land Use

4.1.1. Unmitigated

4.2. Energy

4.2.1. Electricity Emissions By Land Use - Unmitigated

4.2.3. Natural Gas Emissions By Land Use - Unmitigated

4.3. Area Emissions by Source

4.3.1. Unmitigated

4.4. Water Emissions by Land Use

4.4.1. Unmitigated

4.5. Waste Emissions by Land Use

4.5.1. Unmitigated

4.6. Refrigerant Emissions by Land Use

4.6.1. Unmitigated

4.7. Offroad Emissions By Equipment Type
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4.7.1. Unmitigated

4.8. Stationary Emissions By Equipment Type

4.8.1. Unmitigated

4.9. User Defined Emissions By Equipment Type

4.9.1. Unmitigated

4.10. Soil Carbon Accumulation By Vegetation Type

4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated

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

4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated

5. Activity Data

5.1. Construction Schedule

5.2. Off-Road Equipment

5.2.1. Unmitigated

5.3. Construction Vehicles

5.3.1. Unmitigated

5.4. Vehicles

5.4.1. Construction Vehicle Control Strategies
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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

5.10. Operational Area Sources

5.10.1. Hearths

5.10.1.1. Unmitigated

5.10.2. Architectural Coatings

5.10.3. Landscape Equipment

5.11. Operational Energy Consumption

5.11.1. Unmitigated

5.12. Operational Water and Wastewater Consumption

5.12.1. Unmitigated
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5.13. Operational Waste Generation

5.13.1. Unmitigated

5.14. Operational Refrigeration and Air Conditioning Equipment

5.14.1. Unmitigated

5.15. Operational Off-Road Equipment

5.15.1. Unmitigated

5.16. Stationary Sources

5.16.1. Emergency Generators and Fire Pumps

5.16.2. Process Boilers

5.17. User Defined

5.18. Vegetation

5.18.1. Land Use Change

5.18.1.1. Unmitigated

5.18.1. Biomass Cover Type

5.18.1.1. Unmitigated

5.18.2. Sequestration

5.18.2.1. Unmitigated
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6. Climate Risk Detailed Report

6.1. Climate Risk Summary

6.2. Initial Climate Risk Scores

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
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1. Basic Project Information

1.1. Basic Project Information
Data Field Value
Project Name Santee TCSP HE Sites
Construction Start Date 1/1/2025
Operational Year 2026
Lead Agency City of Santee
Land Use Scale Project/site
Analysis Level for Defaults County
Windspeed (m/s) 2.60
Precipitation (days) 7.60
Location 32.84193077423488, -116.9764861508951
County San Diego
City Santee
Air District San Diego County APCD
Air Basin San Diego
TAZ 6529
EDFZ 12
Electric Utility San Diego Gas & Electric
Gas Utility San Diego Gas & Electric
App Version 2022.1.1.21

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
7 / 51
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. 7.43 64.0 21.7 75.0 0.06 0.59 11.8 12.4 0.55 2.81 3.32 — 18,902 18,902 0.84 1.01 51.1 19,275 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 7.06 63.9 31.7 68.5 0.06 1.37 11.8 12.4 1.26 3.98 5.23 — 18,244 18,244 0.87 1.04 1.33 18,575 Average
Daily
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 5.16 28.0 20.4 47.8 0.05 0.63 7.66 8.29 0.58 2.01 2.60 — 12,398 12,398 0.58 0.66 14.2 12,624 Annual
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 0.94 5.11 3.72 8.72 0.01 0.11 1.40 1.51 0.11 0.37 0.47 — 2,053 2,053 0.10 0.11 2.35 2,090 -------------------
Santee TCSP HE Sites Detailed Report, 2/29/2024
Apartments Mid Rise 988 Dwelling Unit 13.8 948,480 94,848 — 2,757 Sites 16A and 20B Apartments Low
Rise
303 Dwelling Unit 5.04 321,180 32,118 — 845 Site 20A
Condo/Townhouse 189 Dwelling Unit 5.57 200,340 20,034 — 527 Site 16B Other Asphalt
Surfaces
571 1000sqft 13.1 0.00 0.00 — — Paved area for all 4
site

1.3. User-Selected Emission Reduction Measures by Emissions Sector No measures selected

2. Emissions Summary

2.1. Construction Emissions Compared Against Thresholds Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) 8 / 51
Santee TCSP HE Sites Detailed Report, 2/29/2024

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)
— — — — — — — — — — — — — — — — — —
2025 6.69 5.87 21.6 68.1 0.06 0.59 10.0 10.6 0.55 2.39 2.94 — 17,067 17,067 0.77 0.94 48.2 17,413 2026 7.43 64.0 21.7 75.0 0.06 0.55 11.8 12.4 0.51 2.81 3.32 — 18,902 18,902 0.84 1.01 51.1 19,275 Daily -
Winter
(Max)
— — — — — — — — — — — — — — — — — —
2025 6.62 5.79 31.7 62.0 0.06 1.37 10.0 10.6 1.26 3.98 5.23 — 16,506 16,506 0.81 0.96 1.25 16,813 2026 7.06 63.9 22.4 68.5 0.06 0.55 11.8 12.4 0.51 2.81 3.32 — 18,244 18,244 0.87 1.04 1.33 18,575 Average
Daily
— — — — — — — — — — — — — — — — — —
2025 5.16 4.49 20.4 47.8 0.05 0.63 7.66 8.29 0.58 2.01 2.60 — 12,398 12,398 0.58 0.66 14.2 12,624 2026 2.62 28.0 8.59 25.9 0.02 0.22 4.28 4.50 0.21 1.02 1.22 — 6,732 6,732 0.32 0.37 7.98 6,858 Annual — — — — — — — — — — — — — — — — — —
2025 0.94 0.82 3.72 8.72 0.01 0.11 1.40 1.51 0.11 0.37 0.47 — 2,053 2,053 0.10 0.11 2.35 2,090 2026 0.48 5.11 1.57 4.72 < 0.005 0.04 0.78 0.82 0.04 0.19 0.22 — 1,115 1,115 0.05 0.06 1.32 1,135

2.4. Operations 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. 44.1 74.8 25.9 305 0.54 0.75 44.5 45.2 0.71 11.3 12.0 689 58,024 58,713 72.7 2.38 185 61,424 9 / 51
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 35.8 33.1 21.3 220 0.51 0.40 44.5 44.9 0.37 11.3 11.7 — 52,308 52,308 2.59 2.06 175 53,163 Area 7.86 41.5 0.81 83.9 < 0.005 0.04 — 0.04 0.03 — 0.03 0.00 224 224 0.01 < 0.005 — 225 Energy 0.44 0.22 3.78 1.61 0.02 0.31 — 0.31 0.31 — 0.31 — 5,445 5,445 0.89 0.07 — 5,487 Water — — — — — — — — — — — 99.6 45.5 145 10.3 0.25 — 475 Waste — — — — — — — — — — — 590 0.00 590 58.9 0.00 — 2,063 Refrig. — — — — — — — — — — — — — — — — 10.5 10.5
Total 44.1 74.8 25.9 305 0.54 0.75 44.5 45.2 0.71 11.3 12.0 689 58,024 58,713 72.7 2.38 185 61,424 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Mobile 35.1 32.4 23.5 210 0.49 0.40 44.5 44.9 0.37 11.3 11.7 — 49,997 49,997 2.78 2.19 4.53 50,724 Area 0.00 34.1 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 -------------------
Santee TCSP HE Sites Detailed Report, 2/29/2024
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 35.5 66.7 27.2 211 0.51 0.71 44.5 45.2 0.68 11.3 12.0 689 55,488 56,177 72.9 2.50 15.1 58,760 Average
Daily
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 39.0 69.9 27.3 252 0.52 0.73 44.3 45.0 0.70 11.2 11.9 689 55,947 56,636 72.8 2.48 85.9 59,282 Annual
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 7.12 12.8 4.99 46.0 0.09 0.13 8.08 8.21 0.13 2.05 2.18 114 9,263 9,377 12.1 0.41 14.2 9,815

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) 10 / 51
Santee TCSP HE Sites Detailed Report, 2/29/2024
Energy 0.44 0.22 3.78 1.61 0.02 0.31 — 0.31 0.31 — 0.31 — 5,445 5,445 0.89 0.07 — 5,487 Water — — — — — — — — — — — 99.6 45.5 145 10.3 0.25 — 475 Waste — — — — — — — — — — — 590 0.00 590 58.9 0.00 — 2,063 Refrig. — — — — — — — — — — — — — — — — 10.5 10.5
Total 35.5 66.7 27.2 211 0.51 0.71 44.5 45.2 0.68 11.3 12.0 689 55,488 56,177 72.9 2.50 15.1 58,760 Average
Daily
— — — — — — — — — — — — — — — — — —
Mobile 34.7 32.0 23.1 209 0.49 0.40 44.3 44.7 0.37 11.2 11.6 — 50,345 50,345 2.72 2.17 75.4 51,135 Area 3.87 37.7 0.40 41.4 < 0.005 0.02 — 0.02 0.02 — 0.02 0.00 111 111 < 0.005 < 0.005 — 111 Energy 0.44 0.22 3.78 1.61 0.02 0.31 — 0.31 0.31 — 0.31 — 5,445 5,445 0.89 0.07 — 5,487 Water — — — — — — — — — — — 99.6 45.5 145 10.3 0.25 — 475 Waste — — — — — — — — — — — 590 0.00 590 58.9 0.00 — 2,063 Refrig. — — — — — — — — — — — — — — — — 10.5 10.5
Total 39.0 69.9 27.3 252 0.52 0.73 44.3 45.0 0.70 11.2 11.9 689 55,947 56,636 72.8 2.48 85.9 59,282 Annual — — — — — — — — — — — — — — — — — —
Mobile 6.33 5.83 4.22 38.1 0.09 0.07 8.08 8.15 0.07 2.05 2.12 — 8,335 8,335 0.45 0.36 12.5 8,466 Area 0.71 6.89 0.07 7.55 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 0.00 18.3 18.3 < 0.005 < 0.005 — 18.4 Energy 0.08 0.04 0.69 0.29 < 0.005 0.06 — 0.06 0.06 — 0.06 — 902 902 0.15 0.01 — 909 Water — — — — — — — — — — — 16.5 7.53 24.0 1.70 0.04 — 78.6 Waste — — — — — — — — — — — 97.6 0.00 97.6 9.76 0.00 — 342 Refrig. — — — — — — — — — — — — — — — — 1.74 1.74
Total 7.12 12.8 4.99 46.0 0.09 0.13 8.08 8.21 0.13 2.05 2.18 114 9,263 9,377 12.1 0.41 14.2 9,815

3. Construction Emissions Details

3.1. Site Preparation (2025) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) 11 / 51
-------------------
Santee TCSP HE Sites Detailed Report, 2/29/2024
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-Road
Equipment

3.94 3.31 31.6 30.2 0.05 1.37 — 1.37 1.26 — 1.26 — 5,295 5,295 0.21 0.04 — 5,314 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 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.22 0.18 1.73 1.65 < 0.005 0.07 — 0.07 0.07 — 0.07 — 290 290 0.01 < 0.005 — 291 Dust
From
Material
Movement
— — — — — — 0.42 0.42 — 0.22 0.22 — — — — — — —
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-Road
Equipment

0.04 0.03 0.32 0.30 < 0.005 0.01 — 0.01 0.01 — 0.01 — 48.0 48.0 < 0.005 < 0.005 — 48.2 Dust
From
Material
Movement
— — — — — — 0.08 0.08 — 0.04 0.04 — — — — — — —
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 12 / 51
-------------------
Santee TCSP HE Sites Detailed Report, 2/29/2024
Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.08 0.07 0.06 0.71 0.00 0.00 0.15 0.15 0.00 0.03 0.03 — 157 157 0.01 0.01 0.02 159 Vendor < 0.005 < 0.005 0.03 0.02 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 25.0 25.0 < 0.005 < 0.005 < 0.005 26.1 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.04 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 8.67 8.67 < 0.005 < 0.005 0.01 8.79 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 1.37 1.37 < 0.005 < 0.005 < 0.005 1.43 Hauling 0.00 0.00 0.00 0.00 0.00 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 — 1.44 1.44 < 0.005 < 0.005 < 0.005 1.46 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 0.23 0.23 < 0.005 < 0.005 < 0.005 0.24 Hauling 0.00 0.00 0.00 0.00 0.00 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 (2025) - 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)
— — — — — — — — — — — — — — — — — —
13 / 51
Santee TCSP HE Sites Detailed Report, 2/29/2024
Off-Road
Equipment

3.80 3.20 29.7 28.3 0.06 1.23 — 1.23 1.14 — 1.14 — 6,599 6,599 0.27 0.05 — 6,622 Dust
From
Material
Movement
— — — — — — 3.59 3.59 — 1.42 1.42 — — — — — — —
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-Road
Equipment

0.47 0.39 3.66 3.49 0.01 0.15 — 0.15 0.14 — 0.14 — 814 814 0.03 0.01 — 816 Dust
From
Material
Movement
— — — — — — 0.44 0.44 — 0.18 0.18 — — — — — — —
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-Road
Equipment

0.09 0.07 0.67 0.64 < 0.005 0.03 — 0.03 0.03 — 0.03 — 135 135 0.01 < 0.005 — 135 Dust
From
Material
Movement
— — — — — — 0.08 0.08 — 0.03 0.03 — — — — — — —
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 0.09 0.08 0.07 0.81 0.00 0.00 0.17 0.17 0.00 0.04 0.04 — 179 179 0.01 0.01 0.02 182 14 / 51
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Santee TCSP HE Sites Detailed Report, 2/29/2024
Vendor < 0.005 < 0.005 0.03 0.02 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 25.0 25.0 < 0.005 < 0.005 < 0.005 26.1 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.01 0.10 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 — 22.3 22.3 < 0.005 < 0.005 0.04 22.6 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 3.09 3.09 < 0.005 < 0.005 < 0.005 3.22 Hauling 0.00 0.00 0.00 0.00 0.00 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 — 3.69 3.69 < 0.005 < 0.005 0.01 3.74 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 0.51 0.51 < 0.005 < 0.005 < 0.005 0.53 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.5. Building Construction (2025) - 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-Road
Equipment

1.68 1.41 13.1 16.3 0.03 0.54 — 0.54 0.50 — 0.50 — 2,997 2,997 0.12 0.02 — 3,007 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-Road
Equipment

1.68 1.41 13.1 16.3 0.03 0.54 — 0.54 0.50 — 0.50 — 2,997 2,997 0.12 0.02 — 3,007 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 15 / 51
Santee TCSP HE Sites Detailed Report, 2/29/2024
Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

1.14 0.96 8.86 11.1 0.02 0.37 — 0.37 0.34 — 0.34 — 2,034 2,034 0.08 0.02 — 2,041 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-Road
Equipment

0.21 0.17 1.62 2.02 < 0.005 0.07 — 0.07 0.06 — 0.06 — 337 337 0.01 < 0.005 — 338 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 4.67 4.30 3.26 49.3 0.00 0.00 9.01 9.01 0.00 2.11 2.11 — 10,110 10,110 0.47 0.35 37.9 10,265 Vendor 0.34 0.16 5.27 2.45 0.03 0.05 1.01 1.07 0.05 0.28 0.33 — 3,960 3,960 0.17 0.56 10.3 4,141 Hauling 0.00 0.00 0.00 0.00 0.00 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 4.60 4.23 3.63 43.2 0.00 0.00 9.01 9.01 0.00 2.11 2.11 — 9,547 9,547 0.52 0.38 0.99 9,673 Vendor 0.33 0.15 5.47 2.52 0.03 0.05 1.01 1.07 0.05 0.28 0.33 — 3,962 3,962 0.17 0.56 0.27 4,133 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 3.09 2.84 2.45 29.8 0.00 0.00 6.09 6.09 0.00 1.43 1.43 — 6,537 6,537 0.33 0.25 11.1 6,633 Vendor 0.23 0.11 3.68 1.68 0.02 0.04 0.68 0.72 0.04 0.19 0.23 — 2,688 2,688 0.12 0.38 3.02 2,807 Hauling 0.00 0.00 0.00 0.00 0.00 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 0.56 0.52 0.45 5.43 0.00 0.00 1.11 1.11 0.00 0.26 0.26 — 1,082 1,082 0.06 0.04 1.84 1,098 16 / 51
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Santee TCSP HE Sites Detailed Report, 2/29/2024
Vendor 0.04 0.02 0.67 0.31 < 0.005 0.01 0.12 0.13 0.01 0.03 0.04 — 445 445 0.02 0.06 0.50 465 Hauling 0.00 0.00 0.00 0.00 0.00 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 (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-Road
Equipment

1.60 1.34 12.3 16.2 0.03 0.47 — 0.47 0.44 — 0.44 — 2,997 2,997 0.12 0.02 — 3,007 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-Road
Equipment

1.60 1.34 12.3 16.2 0.03 0.47 — 0.47 0.44 — 0.44 — 2,997 2,997 0.12 0.02 — 3,007 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-Road
Equipment

0.56 0.47 4.28 5.63 0.01 0.16 — 0.16 0.15 — 0.15 — 1,041 1,041 0.04 0.01 — 1,045 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-Road
Equipment

0.10 0.08 0.78 1.03 < 0.005 0.03 — 0.03 0.03 — 0.03 — 172 172 0.01 < 0.005 — 173 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 17 / 51
-------------------
Santee TCSP HE Sites Detailed Report, 2/29/2024
Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Worker 4.48 3.85 2.95 46.1 0.00 0.00 9.01 9.01 0.00 2.11 2.11 — 9,905 9,905 0.47 0.35 34.7 10,056 Vendor 0.31 0.13 5.01 2.36 0.03 0.05 1.01 1.07 0.05 0.28 0.33 — 3,886 3,886 0.15 0.56 9.48 4,067 Hauling 0.00 0.00 0.00 0.00 0.00 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 4.18 3.80 3.33 40.6 0.00 0.00 9.01 9.01 0.00 2.11 2.11 — 9,354 9,354 0.49 0.38 0.90 9,479 Vendor 0.30 0.13 5.21 2.40 0.03 0.05 1.01 1.07 0.05 0.28 0.33 — 3,889 3,889 0.15 0.56 0.25 4,060 Hauling 0.00 0.00 0.00 0.00 0.00 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 1.44 1.31 1.15 14.3 0.00 0.00 3.12 3.12 0.00 0.73 0.73 — 3,280 3,280 0.17 0.13 5.20 3,328 Vendor 0.11 0.05 1.80 0.82 0.01 0.02 0.35 0.37 0.02 0.10 0.12 — 1,351 1,351 0.05 0.19 1.43 1,412 Hauling 0.00 0.00 0.00 0.00 0.00 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 0.26 0.24 0.21 2.60 0.00 0.00 0.57 0.57 0.00 0.13 0.13 — 543 543 0.03 0.02 0.86 551 Vendor 0.02 0.01 0.33 0.15 < 0.005 < 0.005 0.06 0.07 < 0.005 0.02 0.02 — 224 224 0.01 0.03 0.24 234 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.9. Paving (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)
— — — — — — — — — — — — — — — — — —
18 / 51
Santee TCSP HE Sites Detailed Report, 2/29/2024
Off-Road
Equipment

0.91 0.76 7.12 9.94 0.01 0.32 — 0.32 0.29 — 0.29 — 1,511 1,511 0.06 0.01 — 1,516 Paving — 0.98 — — — — — — — — — — — — — — — —
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-Road
Equipment

0.09 0.07 0.68 0.95 < 0.005 0.03 — 0.03 0.03 — 0.03 — 145 145 0.01 < 0.005 — 145 Paving — 0.09 — — — — — — — — — — — — — — — —
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-Road
Equipment

0.02 0.01 0.12 0.17 < 0.005 0.01 — 0.01 0.01 — 0.01 — 24.0 24.0 < 0.005 < 0.005 — 24.1 Paving — 0.02 — — — — — — — — — — — — — — — —
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 0.06 0.05 0.04 0.65 0.00 0.00 0.13 0.13 0.00 0.03 0.03 — 139 139 0.01 < 0.005 0.49 142 Vendor < 0.005 < 0.005 0.06 0.03 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 49.1 49.1 < 0.005 0.01 0.12 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 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
19 / 51
-------------------
Santee TCSP HE Sites Detailed Report, 2/29/2024
Worker 0.01 0.01 < 0.005 0.06 0.00 0.00 0.01 0.01 0.00 < 0.005 < 0.005 — 12.7 12.7 < 0.005 < 0.005 0.02 12.9 Vendor < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 4.71 4.71 < 0.005 < 0.005 < 0.005 4.92 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 < 0.005 < 0.005 — 2.11 2.11 < 0.005 < 0.005 < 0.005 2.14 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 0.78 0.78 < 0.005 < 0.005 < 0.005 0.82 Hauling 0.00 0.00 0.00 0.00 0.00 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. Architectural Coating (2026) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) 20 / 51
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-Road
Equipmen

0.15 t

0.12 0.86 1.13 < 0.005 0.02 — 0.02 0.02 — 0.02 — 134 134 0.01 < 0.005 — 134 Architect
ural
Coatings
— 57.8 — — — — — — — — — — — — — — — —
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-Road
Equipment

0.15 0.12 0.86 1.13 < 0.005 0.02 — 0.02 0.02 — 0.02 — 134 134 0.01 < 0.005 — 134 Architect
ural
Coatings
— 57.8 — — — — — — — — — — — — — — — —
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 Santee TCSP HE Sites Detailed Report, 2/29/2024
Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.06 0.05 0.38 0.50 < 0.005 0.01 — 0.01 0.01 — 0.01 — 59.3 59.3 < 0.005 < 0.005 — 59.5 Architect
ural
Coatings
— 25.6 — — — — — — — — — — — — — — — —
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-Road
Equipment

0.01 0.01 0.07 0.09 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 9.81 9.81 < 0.005 < 0.005 — 9.84 Architect
ural
Coatings
— 4.68 — — — — — — — — — — — — — — — —
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 0.90 0.77 0.59 9.21 0.00 0.00 1.80 1.80 0.00 0.42 0.42 — 1,981 1,981 0.09 0.07 6.93 2,011 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 0.84 0.76 0.67 8.13 0.00 0.00 1.80 1.80 0.00 0.42 0.42 — 1,871 1,871 0.10 0.08 0.18 1,896 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 0.37 0.33 0.29 3.64 0.00 0.00 0.80 0.80 0.00 0.19 0.19 — 838 838 0.04 0.03 1.33 850 21 / 51
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)
— — — — — — — — — — — — — — — — — —
Apartme
nts
Mid Rise

21.8 20.2 13.0 134 0.31 0.24 27.1 27.3 0.23 6.87 7.10 — 31,857 31,857 1.58 1.26 106 32,377 Apartme
nts
Low Rise

7.63 7.07 4.56 46.9 0.11 0.09 9.49 9.58 0.08 2.41 2.49 — 11,165 11,165 0.55 0.44 37.3 11,348 Condo/T
ownhous
e

6.35 5.88 3.79 39.0 0.09 0.07 7.89 7.97 0.07 2.00 2.07 — 9,286 9,286 0.46 0.37 31.0 9,438 Other
Asphalt
Surfaces

0.00 0.00 0.00 0.00 0.00 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 35.8 33.1 21.3 220 0.51 0.40 44.5 44.9 0.37 11.3 11.7 — 52,308 52,308 2.59 2.06 175 53,163 Santee TCSP HE Sites Detailed Report, 2/29/2024
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 0.07 0.06 0.05 0.66 0.00 0.00 0.15 0.15 0.00 0.03 0.03 — 139 139 0.01 0.01 0.22 141 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) 22 / 51
Santee TCSP HE Sites Detailed Report, 2/29/2024
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Apartme
nts
Mid Rise

21.4 19.7 14.3 128 0.30 0.24 27.1 27.3 0.23 6.87 7.10 — 30,449 30,449 1.69 1.34 2.76 30,892 Apartme
nts
Low Rise

7.49 6.91 5.01 44.8 0.10 0.09 9.49 9.58 0.08 2.41 2.49 — 10,672 10,672 0.59 0.47 0.97 10,827 Condo/T
ownhous
e

6.23 5.75 4.16 37.3 0.09 0.07 7.89 7.97 0.07 2.00 2.07 — 8,876 8,876 0.49 0.39 0.80 9,005 Other
Asphalt
Surfaces

0.00 0.00 0.00 0.00 0.00 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 35.1 32.4 23.5 210 0.49 0.40 44.5 44.9 0.37 11.3 11.7 — 49,997 49,997 2.78 2.19 4.53 50,724 Annual — — — — — — — — — — — — — — — — — —
Apartme
nts
Mid Rise

3.85 3.55 2.57 23.2 0.05 0.04 4.92 4.96 0.04 1.25 1.29 — 5,076 5,076 0.27 0.22 7.60 5,156 Apartme
nts
Low Rise

1.35 1.25 0.90 8.14 0.02 0.02 1.72 1.74 0.01 0.44 0.45 — 1,779 1,779 0.10 0.08 2.66 1,807 Condo/T
ownhous
e

1.12 1.04 0.75 6.77 0.02 0.01 1.43 1.45 0.01 0.36 0.38 — 1,480 1,480 0.08 0.06 2.22 1,503 Other
Asphalt
Surfaces

0.00 0.00 0.00 0.00 0.00 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 6.33 5.83 4.22 38.1 0.09 0.07 8.08 8.15 0.07 2.05 2.12 — 8,335 8,335 0.45 0.36 12.5 8,466

4.2. Energy

4.2.1. Electricity Emissions By Land Use - Unmitigated
23 / 51
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)
Apartme — — — — — — — — — — — — 414 414 0.30 0.04 — 432 nts
Mid Rise
Apartme — — — — — — — — — — — — 131 131 0.10 0.01 — 137 nts
Low Rise
Condo/T — — — — — — — — — — — — 96.4 96.4 0.07 0.01 — 101 ownhous
e
Other — — — — — — — — — — — — 0.00 0.00 0.00 0.00 — 0.00 Asphalt
Surfaces
Total — — — — — — — — — — — — 641 641 0.47 0.06 — 670
Daily, — — — — — — — — — — — — — — — — — —
Winter
(Max)
Apartme — — — — — — — — — — — — 414 414 0.30 0.04 — 432 nts
Mid Rise
Apartme — — — — — — — — — — — — 131 131 0.10 0.01 — 137 nts
Low Rise
Condo/T — — — — — — — — — — — — 96.4 96.4 0.07 0.01 — 101 ownhous
e
Other — — — — — — — — — — — — 0.00 0.00 0.00 0.00 — 0.00 Asphalt
Surfaces
Total — — — — — — — — — — — — 641 641 0.47 0.06 — 670
Santee TCSP HE Sites Detailed Report, 2/29/2024
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) 24 / 51
Santee TCSP HE Sites Detailed Report, 2/29/2024
Annual — — — — — — — — — — — — — — — — — —
Apartme
nts
Mid Rise
— — — — — — — — — — — — 68.5 68.5 0.05 0.01 — 71.6
Apartme
nts
Low Rise
— — — — — — — — — — — — 21.7 21.7 0.02 < 0.005 — 22.6
Condo/T
ownhous
e
— — — — — — — — — — — — 16.0 16.0 0.01 < 0.005 — 16.7
Other
Asphalt
Surfaces
— — — — — — — — — — — — 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — — 106 106 0.08 0.01 — 111

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) 25 / 51
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)
Apartme 0.21 0.10 1.77 0.75 0.01 0.14 — 0.14 0.14 — 0.14 — 2,241 2,241 0.20 < 0.005 — 2,248 nts
Mid Rise
Apartme 0.12 0.06 1.04 0.44 0.01 0.08 — 0.08 0.08 — 0.08 — 1,317 1,317 0.12 < 0.005 — 1,321 nts
Low Rise
Condo/T 0.11 0.06 0.98 0.42 0.01 0.08 — 0.08 0.08 — 0.08 — 1,246 1,246 0.11 < 0.005 — 1,249 ownhous
e
Other 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 Asphalt
Surfaces
Santee TCSP HE Sites Detailed Report, 2/29/2024
Total 0.44 0.22 3.78 1.61 0.02 0.31 — 0.31 0.31 — 0.31 — 4,804 4,804 0.43 0.01 — 4,818 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Apartme
nts
Mid Rise

0.21 0.10 1.77 0.75 0.01 0.14 — 0.14 0.14 — 0.14 — 2,241 2,241 0.20 < 0.005 — 2,248 Apartme
nts
Low Rise

0.12 0.06 1.04 0.44 0.01 0.08 — 0.08 0.08 — 0.08 — 1,317 1,317 0.12 < 0.005 — 1,321 Condo/T
ownhous
e

0.11 0.06 0.98 0.42 0.01 0.08 — 0.08 0.08 — 0.08 — 1,246 1,246 0.11 < 0.005 — 1,249 Other
Asphalt
Surfaces

0.00 0.00 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 0.44 0.22 3.78 1.61 0.02 0.31 — 0.31 0.31 — 0.31 — 4,804 4,804 0.43 0.01 — 4,818 Annual — — — — — — — — — — — — — — — — — —
Apartme
nts
Mid Rise

0.04 0.02 0.32 0.14 < 0.005 0.03 — 0.03 0.03 — 0.03 — 371 371 0.03 < 0.005 — 372 Apartme
nts
Low Rise

0.02 0.01 0.19 0.08 < 0.005 0.02 — 0.02 0.02 — 0.02 — 218 218 0.02 < 0.005 — 219 Condo/T
ownhous
e

0.02 0.01 0.18 0.08 < 0.005 0.01 — 0.01 0.01 — 0.01 — 206 206 0.02 < 0.005 — 207 Other
Asphalt
Surfaces

0.00 0.00 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 0.08 0.04 0.69 0.29 < 0.005 0.06 — 0.06 0.06 — 0.06 — 795 795 0.07 < 0.005 — 798

4.3. Area Emissions by Source
26 / 51
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
Products
— 31.5 — — — — — — — — — — — — — — — —
Architect
ural
Coatings
— 2.56 — — — — — — — — — — — — — — — —
Landsca
pe
Equipme
nt

7.86 7.44 0.81 83.9 < 0.005 0.04 — 0.04 0.03 — 0.03 — 224 224 0.01 < 0.005 — 225 Total 7.86 41.5 0.81 83.9 < 0.005 0.04 — 0.04 0.03 — 0.03 0.00 224 224 0.01 < 0.005 — 225 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
Products
— 31.5 — — — — — — — — — — — — — — — —
Architect
ural
Coatings
— 2.56 — — — — — — — — — — — — — — — —
Total 0.00 34.1 0.00 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 -------------------
Santee TCSP HE Sites Detailed Report, 2/29/2024

4.3.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) 27 / 51
Land
Use
Daily,
Summer
(Max)
Apartme
nts
Mid Rise
Apartme
nts
Low Rise
Condo/T
ownhous
e
Other
Asphalt
Surfaces
Total
TOG
—
—
—
—
—
—
ROG
—
—
—
—
—
—
NOx
—
—
—
—
—
—
CO
—
—
—
—
—
—
SO2
—
—
—
—
—
—
PM10E
—
—
—
—
—
—
PM10D
—
—
—
—
—
—
PM10T
—
—
—
—
—
—
PM2.5E
—
—
—
—
—
—
PM2.5D
—
—
—
—
—
—
PM2.5T
—
—
—
—
—
—
BCO2
—

66.5 20.4

12.7 0.00

99.6 NBCO2
—

30.3 9.34

5.83 0.00

45.5 CO2T
—

96.8 29.7

18.5 0.00
145
CH4
—

6.84 2.10

1.31 0.00

10.3 N2O
—

0.16 0.05

0.03 0.00

0.25 R
—
—
—
—
—
—
CO2e
—
317

97.3 60.7

0.00 475
Santee TCSP HE Sites Detailed Report, 2/29/2024
Consum
er
Products
— 5.75 — — — — — — — — — — — — — — — —
Architect
ural
Coatings
— 0.47 — — — — — — — — — — — — — — — —
Landsca
pe
Equipme
nt

0.71 0.67 0.07 7.55 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 18.3 18.3 < 0.005 < 0.005 — 18.4 Total 0.71 6.89 0.07 7.55 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 0.00 18.3 18.3 < 0.005 < 0.005 — 18.4

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) 28 / 51
Santee TCSP HE Sites Detailed Report, 2/29/2024
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Apartme
nts
Mid Rise
— — — — — — — — — — — 66.5 30.3 96.8 6.84 0.16 — 317
Apartme
nts
Low Rise
— — — — — — — — — — — 20.4 9.34 29.7 2.10 0.05 — 97.3
Condo/T
ownhous
e
— — — — — — — — — — — 12.7 5.83 18.5 1.31 0.03 — 60.7
Other
Asphalt
Surfaces
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 99.6 45.5 145 10.3 0.25 — 475 Annual — — — — — — — — — — — — — — — — — —
Apartme
nts
Mid Rise
— — — — — — — — — — — 11.0 5.02 16.0 1.13 0.03 — 52.5
Apartme
nts
Low Rise
— — — — — — — — — — — 3.38 1.55 4.92 0.35 0.01 — 16.1
Condo/T
ownhous
e
— — — — — — — — — — — 2.11 0.96 3.07 0.22 0.01 — 10.0
Other
Asphalt
Surfaces
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 16.5 7.53 24.0 1.70 0.04 — 78.6

4.5. Waste Emissions by Land Use

4.5.1. Unmitigated
29 / 51
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)
— — — — — — — — — — — — — — — — — —
Apartme
nts
Mid Rise
— — — — — — — — — — — 394 0.00 394 39.4 0.00 — 1,378
Apartme
nts
Low Rise
— — — — — — — — — — — 121 0.00 121 12.1 0.00 — 422
Condo/T
ownhous
e
— — — — — — — — — — — 75.3 0.00 75.3 7.52 0.00 — 263
Other
Asphalt
Surfaces
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 590 0.00 590 58.9 0.00 — 2,063 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Apartme
nts
Mid Rise
— — — — — — — — — — — 394 0.00 394 39.4 0.00 — 1,378
Apartme
nts
Low Rise
— — — — — — — — — — — 121 0.00 121 12.1 0.00 — 422
Condo/T
ownhous
e
— — — — — — — — — — — 75.3 0.00 75.3 7.52 0.00 — 263
Other
Asphalt
Surfaces
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 590 0.00 590 58.9 0.00 — 2,063 Santee TCSP HE Sites Detailed Report, 2/29/2024
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) 30 / 51
Land
Use
Daily,
Summer
(Max)
Apartme
nts
Mid Rise
Apartme
nts
Low Rise
Condo/T
ownhous
e
Total
TOG
—
—
—
—
—
ROG
—
—
—
—
—
NOx
—
—
—
—
—
CO
—
—
—
—
—
SO2
—
—
—
—
—
PM10E
—
—
—
—
—
PM10D
—
—
—
—
—
PM10T
—
—
—
—
—
PM2.5E
—
—
—
—
—
PM2.5D
—
—
—
—
—
PM2.5T
—
—
—
—
—
BCO2
—
—
—
—
—
NBCO2
—
—
—
—
—
CO2T
—
—
—
—
—
CH4
—
—
—
—
—
N2O
—
—
—
—
—
R
—

6.79 2.30

1.43 10.5
CO2e
—

6.79 2.30

1.43 10.5
Santee TCSP HE Sites Detailed Report, 2/29/2024
Annual — — — — — — — — — — — — — — — — — —
Apartme
nts
Mid Rise
— — — — — — — — — — — 65.2 0.00 65.2 6.52 0.00 — 228
Apartme
nts
Low Rise
— — — — — — — — — — — 20.0 0.00 20.0 2.00 0.00 — 69.9
Condo/T
ownhous
e
— — — — — — — — — — — 12.5 0.00 12.5 1.25 0.00 — 43.6
Other
Asphalt
Surfaces
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 97.6 0.00 97.6 9.76 0.00 — 342

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) 31 / 51
Santee TCSP HE Sites Detailed Report, 2/29/2024
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Apartme
nts
Mid Rise
— — — — — — — — — — — — — — — — 6.79 6.79
Apartme
nts
Low Rise
— — — — — — — — — — — — — — — — 2.30 2.30
Condo/T
ownhous
e
— — — — — — — — — — — — — — — — 1.43 1.43
Total — — — — — — — — — — — — — — — — 10.5 10.5
Annual — — — — — — — — — — — — — — — — — —
Apartme
nts
Mid Rise
— — — — — — — — — — — — — — — — 1.12 1.12
Apartme
nts
Low Rise
— — — — — — — — — — — — — — — — 0.38 0.38
Condo/T
ownhous
e
— — — — — — — — — — — — — — — — 0.24 0.24
Total — — — — — — — — — — — — — — — — 1.74 1.74

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) Equipme
nt
Type
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e 32 / 51
Santee TCSP HE Sites Detailed Report, 2/29/2024
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) Equipme TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e nt
Type
Daily, — — — — — — — — — — — — — — — — — —
Summer
(Max)
Total — — — — — — — — — — — — — — — — — —
Daily, — — — — — — — — — — — — — — — — — —
Winter
(Max)
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —

4.9. User Defined Emissions By Equipment Type
33 / 51
Equipme
nt
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 — — — — — — — — — — — — — — — — — —
Vegetatio
n
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 — — — — — — — — — — — — — — — — — —
Santee TCSP HE Sites Detailed Report, 2/29/2024

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

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) 34 / 51
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 — — — — — — — — — — — — — — — — — —
-------------------
Santee TCSP HE Sites Detailed Report, 2/29/2024
Total — — — — — — — — — — — — — — — — — —

4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)

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
35 / 51
Santee TCSP HE Sites Detailed Report, 2/29/2024
Subtotal — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Avoided — — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Sequest
ered
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Remove
d
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Avoided — — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Sequest
ered
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Remove
d
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —

5. Activity Data

5.1. Construction Schedule
Phase Name Phase Type Start Date End Date Days Per Week Work Days per Phase Phase Description 36 / 51
Santee TCSP HE Sites Detailed Report, 2/29/2024
Site Preparation Site Preparation 1/1/2025 1/23/2025 6.00 20.0 — Grading Grading 1/24/2025 3/17/2025 6.00 45.0 —
Building Construction Building Construction 3/18/2025 5/28/2026 6.00 375 — Paving Paving 5/29/2026 7/8/2026 6.00 35.0 —
Architectural Coating Architectural Coating 1/1/2026 7/8/2026 6.00 162 —

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/Backh
oes
Diesel Average 4.00 8.00 84.0 0.37
Grading Excavators Diesel Average 2.00 8.00 36.0 0.38
Grading Graders Diesel Average 1.00 8.00 148 0.41
Grading Rubber Tired Dozers Diesel Average 1.00 8.00 367 0.40 Grading Scrapers Diesel Average 2.00 8.00 423 0.48
Grading Tractors/Loaders/Backh
oes
Diesel Average 2.00 8.00 84.0 0.37
Building Construction Cranes Diesel Average 2.00 4.38 367 0.29 Building Construction Forklifts Diesel Average 4.00 7.50 82.0 0.20 Building Construction Generator Sets Diesel Average 2.00 5.00 14.0 0.74 Building Construction Tractors/Loaders/Backh
oes
Diesel Average 4.00 6.56 84.0 0.37
Building Construction Welders Diesel Average 2.00 5.00 46.0 0.45 Paving Pavers Diesel Average 2.00 8.00 81.0 0.42
Paving Paving Equipment Diesel Average 2.00 8.00 89.0 0.36 Paving Rollers Diesel Average 2.00 8.00 36.0 0.38
37 / 51
Santee TCSP HE Sites Detailed Report, 2/29/2024
Architectural Coating Air Compressors Diesel Average 1.00 6.00 37.0 0.48

5.3. Construction Vehicles

5.3.1. Unmitigated
Phase Name Trip Type One-Way Trips per Day Miles per Trip Vehicle Mix Site Preparation — — — —
Site Preparation Worker 17.5 12.0 LDA,LDT1,LDT2
Site Preparation Vendor 1.00 7.63 HHDT,MHDT
Site Preparation Hauling 0.00 20.0 HHDT
Site Preparation Onsite truck 0.00 — HHDT
Grading — — — —
Grading Worker 20.0 12.0 LDA,LDT1,LDT2
Grading Vendor 1.00 7.63 HHDT,MHDT
Grading Hauling 0.00 20.0 HHDT
Grading Onsite truck — — HHDT
Building Construction — — — —
Building Construction Worker 1,066 12.0 LDA,LDT1,LDT2
Building Construction Vendor 158 7.63 HHDT,MHDT
Building Construction Hauling 0.00 20.0 HHDT
Building Construction Onsite truck — — HHDT
Paving — — — —
Paving Worker 15.0 12.0 LDA,LDT1,LDT2
Paving Vendor 2.00 7.63 HHDT,MHDT
Paving Hauling 0.00 20.0 HHDT
Paving Onsite truck — — HHDT
Architectural Coating — — — —
38 / 51
Santee TCSP HE Sites Detailed Report, 2/29/2024
Architectural Coating Worker 213 12.0 LDA,LDT1,LDT2
Architectural Coating Vendor — 7.63 HHDT,MHDT
Architectural Coating Hauling 0.00 20.0 HHDT
Architectural Coating Onsite truck — — HHDT

5.4. Vehicles

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 2,976,750 992,250 0.00 0.00 34,258

5.6. Dust Mitigation

5.6.1. Construction Earthmoving Activities
Phase Name Material Imported (cy) Material Exported (cy) Acres Graded (acres) Material Demolished (sq. ft.) Acres Paved (acres) Site Preparation — — 30.0 0.00 —
Grading — — 135 0.00 —
Paving 0.00 0.00 0.00 0.00 13.1

5.6.2. Construction Earthmoving Control Strategies
Control Strategies Applied Frequency (per day) PM10 Reduction PM2.5 Reduction Water Exposed Area 2 61% 61%
39 / 51
Santee TCSP HE Sites Detailed Report, 2/29/2024

5.7. Construction Paving
Land Use Area Paved (acres) % Asphalt
Apartments Mid Rise — 0%
Apartments Low Rise — 0%
Condo/Townhouse — 0%
Other Asphalt Surfaces 13.1 100%

5.8. Construction Electricity Consumption and Emissions Factors kWh per Year and Emission Factor (lb/MWh)
Year kWh per Year CO2 CH4 N2O
2025 0.00 540 0.03 < 0.005
2026 0.00 45.1 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 Apartments Mid Rise 5,187 5,187 5,187 1,893,255 38,359 38,359 38,359 14,000,900 Apartments Low
Rise
1,818 1,818 1,818 663,570 13,444 13,444 13,444 4,907,198 Condo/Townhouse 1,512 1,512 1,512 551,880 11,181 11,181 11,181 4,081,234 Other Asphalt
Surfaces

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
40 / 51
Santee TCSP HE Sites Detailed Report, 2/29/2024

5.10.1.1. Unmitigated
Hearth Type Unmitigated (number)
Apartments Mid Rise —
Wood Fireplaces 0
Gas Fireplaces 0
Propane Fireplaces 0
Electric Fireplaces 0
No Fireplaces 988
Conventional Wood Stoves 0
Catalytic Wood Stoves 0
Non-Catalytic Wood Stoves 0
Pellet Wood Stoves 0
Apartments Low Rise —
Wood Fireplaces 0
Gas Fireplaces 0
Propane Fireplaces 0
Electric Fireplaces 0
No Fireplaces 303
Conventional Wood Stoves 0
Catalytic Wood Stoves 0
Non-Catalytic Wood Stoves 0
Pellet Wood Stoves 0
Condo/Townhouse —
Wood Fireplaces 0
Gas Fireplaces 0
Propane Fireplaces 0
Electric Fireplaces 0
41 / 51
Santee TCSP HE Sites Detailed Report, 2/29/2024
No Fireplaces 189
Conventional Wood Stoves 0
Catalytic Wood Stoves 0
Non-Catalytic Wood Stoves 0
Pellet Wood Stoves 0

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)
2976750 992,250 0.00 0.00 34,258

5.10.3. Landscape Equipment
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) Apartments Mid Rise 3,350,179 45.1 0.0330 0.0040 6,993,495 Apartments Low Rise 1,058,452 45.1 0.0330 0.0040 4,110,320 Condo/Townhouse 780,448 45.1 0.0330 0.0040 3,886,734
Other Asphalt Surfaces 0.00 45.1 0.0330 0.0040 0.00

5.12. Operational Water and Wastewater Consumption
42 / 51
Santee TCSP HE Sites Detailed Report, 2/29/2024

5.12.1. Unmitigated
Land Use Indoor Water (gal/year) Outdoor Water (gal/year) Apartments Mid Rise 34,711,478 1,732,407
Apartments Low Rise 10,645,322 586,638
Condo/Townhouse 6,640,151 365,923
Other Asphalt Surfaces 0.00 0.00

5.13. Operational Waste Generation

5.13.1. Unmitigated
Land Use Waste (ton/year) Cogeneration (kWh/year)
Apartments Mid Rise 731 —
Apartments Low Rise 224 —
Condo/Townhouse 140 —
Other Asphalt Surfaces 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 Apartments Mid Rise Average room A/C &
Other residential A/C
and heat pumps
R-410A 2,088 < 0.005 2.50 2.50 10.0
Apartments Mid Rise Household refrigerators
and/or freezers
R-134a 1,430 0.12 0.60 0.00 1.00
Apartments Low Rise Average room A/C &
Other residential A/C
and heat pumps
R-410A 2,088 < 0.005 2.50 2.50 10.0
43 / 51
Santee TCSP HE Sites Detailed Report, 2/29/2024
Apartments Low Rise Household refrigerators
and/or freezers
R-134a 1,430 0.12 0.60 0.00 1.00
Condo/Townhouse Average room A/C &
Other residential A/C
and heat pumps
R-410A 2,088 < 0.005 2.50 2.50 10.0
Condo/Townhouse 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

5.16. Stationary Sources

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

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

5.17. User Defined
Equipment Type Fuel Type

5.18. Vegetation

5.18.1. Land Use Change
44 / 51
Santee TCSP HE Sites Detailed Report, 2/29/2024

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

5.18.1. Biomass Cover Type

5.18.1.1. Unmitigated
Biomass Cover Type Initial Acres Final Acres

5.18.2. Sequestration

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

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 12.4 annual days of extreme heat Extreme Precipitation 3.90 annual days with precipitation above 20 mm Sea Level Rise — meters of inundation depth
Wildfire 7.98 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. 45 / 51
Santee TCSP HE Sites Detailed Report, 2/29/2024
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 N/A N/A N/A 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 N/A N/A N/A N/A
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 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
46 / 51
Climate Hazard Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score Temperature and Extreme Heat N/A N/A N/A 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 N/A N/A N/A N/A
Santee TCSP HE Sites Detailed Report, 2/29/2024
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 64.7
AQ-PM 45.1
AQ-DPM 25.7
Drinking Water 10.9
Lead Risk Housing 17.5
Pesticides 0.00
Toxic Releases 25.6
Traffic 48.6
Effect Indicators —
CleanUp Sites 37.8
Groundwater 40.8
Haz Waste Facilities/Generators 84.7
Impaired Water Bodies 77.3
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Santee TCSP HE Sites Detailed Report, 2/29/2024
Solid Waste 9.67
Sensitive Population —
Asthma 35.6
Cardio-vascular 30.2
Low Birth Weights 18.6
Socioeconomic Factor Indicators —
Education 43.4
Housing 19.8
Linguistic 10.4
Poverty 16.6
Unemployment 28.2

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 —
Above Poverty 66.11061209
Employed 1.296034903
Median HI 58.75785962
Education —
Bachelor's or higher 47.36301809
High school enrollment 17.87501604
Preschool enrollment 14.26921596
Transportation —
Auto Access 76.73553189
Active commuting 33.56858719
Social —
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Santee TCSP HE Sites Detailed Report, 2/29/2024
2-parent households 27.65302194
Voting 75.72180162
Neighborhood —
Alcohol availability 42.80764789
Park access 24.26536635
Retail density 59.4636212
Supermarket access 60.82381625
Tree canopy 8.135506224
Housing —
Homeownership 43.19260875
Housing habitability 69.11330681
Low-inc homeowner severe housing cost burden 75.55498524 Low-inc renter severe housing cost burden 83.49801104
Uncrowded housing 47.26036186
Health Outcomes —
Insured adults 74.51559091
Arthritis 0.0
Asthma ER Admissions 59.9
High Blood Pressure 0.0
Cancer (excluding skin) 0.0
Asthma 0.0
Coronary Heart Disease 0.0
Chronic Obstructive Pulmonary Disease 0.0
Diagnosed Diabetes 0.0
Life Expectancy at Birth 1.7
Cognitively Disabled 36.6
Physically Disabled 78.7
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Santee TCSP HE Sites Detailed Report, 2/29/2024
Heart Attack ER Admissions 49.6
Mental Health Not Good 0.0
Chronic Kidney Disease 0.0
Obesity 0.0
Pedestrian Injuries 19.6
Physical Health Not Good 0.0
Stroke 0.0
Health Risk Behaviors —
Binge Drinking 0.0
Current Smoker 0.0
No Leisure Time for Physical Activity 0.0
Climate Change Exposures —
Wildfire Risk 0.0
SLR Inundation Area 0.0
Children 48.8
Elderly 83.1
English Speaking 76.6
Foreign-born 6.0
Outdoor Workers 58.3
Climate Change Adaptive Capacity —
Impervious Surface Cover 55.9
Traffic Density 49.3
Traffic Access 51.5
Other Indices —
Hardship 31.7
Other Decision Support —
2016 Voting 76.0
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Santee TCSP HE Sites Detailed Report, 2/29/2024

7.3. Overall Health & Equity Scores
Metric Result for Project Census Tract
CalEnviroScreen 4.0 Score for Project Location (a) 18.0 Healthy Places Index Score for Project Location (b) 34.0 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
Screen Justification
Land Use Based on acreage and total dwelling units provided in Town Center Specific Plan Buildout Summary (9-7-2023 Draft)
Construction: Construction Phases Sites are vacant, no demo required. Building Construction phase working days reduced by 25% to achieve target buildout in 2026. Architectural coating phase adjusted to overlap second half of Building Construction and Paving.

Construction: Off-Road Equipment Building construction equipment/hours increased by 25% due to shortened schedule.

Operations: Vehicle Data Trip generation provided by Intersecting Metrics.

Operations: Hearths No hearths installed.
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Santee TCSP Program Construction Detailed Report, 2/29/2024 Santee TCSP Program Construction 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

3. Construction Emissions Details

3.1. Demolition (2027) - Unmitigated

3.3. Site Preparation (2027) - Unmitigated

3.5. Grading (2027) - Unmitigated

3.7. Building Construction (2027) - Unmitigated

3.9. Paving (2027) - Unmitigated

3.11. Architectural Coating (2027) - Unmitigated
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Santee TCSP Program Construction Detailed Report, 2/29/2024

4. Operations Emissions Details

4.10. Soil Carbon Accumulation By Vegetation Type

4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated

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

4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated

5. Activity Data

5.1. Construction Schedule

5.2. Off-Road Equipment

5.2.1. Unmitigated

5.3. Construction Vehicles

5.3.1. Unmitigated

5.4. Vehicles

5.4.1. Construction Vehicle Control Strategies

5.5. Architectural Coatings

5.6. Dust Mitigation

5.6.1. Construction Earthmoving Activities

5.6.2. Construction Earthmoving Control Strategies
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Santee TCSP Program Construction Detailed Report, 2/29/2024

5.7. Construction Paving

5.8. Construction Electricity Consumption and Emissions Factors

5.18. Vegetation

5.18.1. Land Use Change

5.18.1.1. Unmitigated

5.18.1. Biomass Cover Type

5.18.1.1. Unmitigated

5.18.2. Sequestration

5.18.2.1. Unmitigated

6. Climate Risk Detailed Report

6.1. Climate Risk Summary

6.2. Initial Climate Risk Scores

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
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Santee TCSP Program Construction Detailed Report, 2/29/2024

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
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Santee TCSP Program Construction Detailed Report, 2/29/2024

1. Basic Project Information

1.1. Basic Project Information
Data Field Value
Project Name Santee TCSP Program Construction
Construction Start Date 1/1/2027
Lead Agency City of Santee
Land Use Scale Project/site
Analysis Level for Defaults County
Windspeed (m/s) 2.60
Precipitation (days) 7.60
Location 32.84514001277044, -116.97668753144887
County San Diego
City Santee
Air District San Diego County APCD
Air Basin San Diego
TAZ 6529
EDFZ 12
Electric Utility San Diego Gas & Electric
Gas Utility San Diego Gas & Electric
App Version 2022.1.1.21

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
Strip Mall 148 1000sqft 33.2 148,060 0.00 — — —
5 / 32
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. 14.2 12.0 94.8 121 0.20 3.70 16.3 20.0 3.40 6.57 9.98 — 26,438 26,438 1.09 0.65 20.6 26,679 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 14.2 12.0 95.2 119 0.20 3.70 16.3 20.0 3.40 6.57 9.98 — 26,172 26,172 1.12 0.66 0.53 26,397 Average
Daily
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 10.1 8.56 68.1 84.9 0.14 2.64 11.6 14.3 2.43 4.70 7.13 — 18,743 18,743 0.79 0.46 6.38 18,907 -------------------
Santee TCSP Program Construction Detailed Report, 2/29/2024 Regional Shopping
Center

6.16 1000sqft 2.20 6,160 0.00 — — —
Government (Civic
Center)

46.8 1000sqft 11.4 46,810 0.00 — — —
Office Park 60.0 1000sqft 6.19 60,050 0.00 — — —
City Park 14.8 Acre 14.8 0.00 0.00 0.00 — —
Condo/Townhouse 198 Dwelling Unit 10.6 209,880 0.00 — 552 — Apartments Low
Rise
217 Dwelling Unit 5.90 230,020 0.00 — 605 —

1.3. User-Selected Emission Reduction Measures by Emissions Sector No measures selected

2. Emissions Summary

2.1. Construction Emissions Compared Against Thresholds Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) 6 / 32
-------------------
-------------------
Santee TCSP Program Construction Detailed Report, 2/29/2024 Annual
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 1.85 1.56 12.4 15.5 0.03 0.48 2.13 2.61 0.44 0.86 1.30 — 3,103 3,103 0.13 0.08 1.06 3,130

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)
— — — — — — — — — — — — — — — — — —
2027 14.2 12.0 94.8 121 0.20 3.70 16.3 20.0 3.40 6.57 9.98 — 26,438 26,438 1.09 0.65 20.6 26,679 Daily -
Winter
(Max)
— — — — — — — — — — — — — — — — — —
2027 14.2 12.0 95.2 119 0.20 3.70 16.3 20.0 3.40 6.57 9.98 — 26,172 26,172 1.12 0.66 0.53 26,397 Average
Daily
— — — — — — — — — — — — — — — — — —
2027 10.1 8.56 68.1 84.9 0.14 2.64 11.6 14.3 2.43 4.70 7.13 — 18,743 18,743 0.79 0.46 6.38 18,907 Annual — — — — — — — — — — — — — — — — — —
2027 1.85 1.56 12.4 15.5 0.03 0.48 2.13 2.61 0.44 0.86 1.30 — 3,103 3,103 0.13 0.08 1.06 3,130

3. Construction Emissions Details

3.1. Demolition (2027) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location 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)
— — — — — — — — — — — — — — — — — —
7 / 32
Santee TCSP Program Construction Detailed Report, 2/29/2024 Off-Road
Equipment

2.64 2.21 19.9 18.6 0.03 0.80 — 0.80 0.73 — 0.73 — 3,427 3,427 0.14 0.03 — 3,439 Demolitio
n
— — — — — — 0.00 0.00 — 0.00 0.00 — — — — — — —
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-Road
Equipment

2.64 2.21 19.9 18.6 0.03 0.80 — 0.80 0.73 — 0.73 — 3,427 3,427 0.14 0.03 — 3,439 Demolitio
n
— — — — — — 0.00 0.00 — 0.00 0.00 — — — — — — —
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-Road
Equipment

1.89 1.58 14.2 13.3 0.02 0.57 — 0.57 0.52 — 0.52 — 2,450 2,450 0.10 0.02 — 2,459 Demolitio
n
— — — — — — 0.00 0.00 — 0.00 0.00 — — — — — — —
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-Road
Equipment

0.34 0.29 2.60 2.43 < 0.005 0.10 — 0.10 0.10 — 0.10 — 406 406 0.02 < 0.005 — 407 Demolitio
n
— — — — — — 0.00 0.00 — 0.00 0.00 — — — — — — —
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)
— — — — — — — — — — — — — — — — — —
8 / 32
-------------------
Santee TCSP Program Construction Detailed Report, 2/29/2024 Worker 0.06 0.05 0.04 0.61 0.00 0.00 0.13 0.13 0.00 0.03 0.03 — 137 137 0.01 < 0.005 0.44 139 Vendor < 0.005 < 0.005 0.06 0.03 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 48.1 48.1 < 0.005 0.01 0.11 50.2 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.06 0.05 0.05 0.54 0.00 0.00 0.13 0.13 0.00 0.03 0.03 — 129 129 0.01 0.01 0.01 131 Vendor < 0.005 < 0.005 0.06 0.03 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 48.1 48.1 < 0.005 0.01 < 0.005 50.2 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.04 0.04 0.03 0.39 0.00 0.00 0.09 0.09 0.00 0.02 0.02 — 93.4 93.4 < 0.005 < 0.005 0.14 94.7 Vendor < 0.005 < 0.005 0.04 0.02 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 34.4 34.4 < 0.005 < 0.005 0.03 35.9 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.01 0.07 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 — 15.5 15.5 < 0.005 < 0.005 0.02 15.7 Vendor < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 5.69 5.69 < 0.005 < 0.005 0.01 5.94 Hauling 0.00 0.00 0.00 0.00 0.00 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. Site Preparation (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-Road
Equipment

3.63 3.05 28.0 28.3 0.05 1.17 — 1.17 1.08 — 1.08 — 5,298 5,298 0.21 0.04 — 5,316 9 / 32
Santee TCSP Program Construction Detailed Report, 2/29/2024 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 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

3.63 3.05 28.0 28.3 0.05 1.17 — 1.17 1.08 — 1.08 — 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 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

2.60 2.18 20.0 20.2 0.03 0.84 — 0.84 0.77 — 0.77 — 3,788 3,788 0.15 0.03 — 3,801 Dust
From
Material
Movement
— — — — — — 5.48 5.48 — 2.82 2.82 — — — — — — —
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-Road
Equipment

0.47 0.40 3.65 3.69 0.01 0.15 — 0.15 0.14 — 0.14 — 627 627 0.03 0.01 — 629 Dust
From
Material
Movement
— — — — — — 1.00 1.00 — 0.51 0.51 — — — — — — —
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 10 / 32
-------------------
Santee TCSP Program Construction Detailed Report, 2/29/2024 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.07 0.06 0.04 0.72 0.00 0.00 0.15 0.15 0.00 0.03 0.03 — 160 160 0.01 0.01 0.52 162 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.07 0.06 0.05 0.63 0.00 0.00 0.15 0.15 0.00 0.03 0.03 — 151 151 0.01 0.01 0.01 153 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.05 0.04 0.04 0.46 0.00 0.00 0.11 0.11 0.00 0.02 0.02 — 109 109 0.01 < 0.005 0.16 110 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.01 0.08 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 — 18.0 18.0 < 0.005 < 0.005 0.03 18.3 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.5. Grading (2027) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
11 / 32
Santee TCSP Program Construction Detailed Report, 2/29/2024 Off-Road
Equipment

3.51 2.95 25.6 27.3 0.06 1.04 — 1.04 0.96 — 0.96 — 6,598 6,598 0.27 0.05 — 6,621 Dust
From
Material
Movement
— — — — — — 3.59 3.59 — 1.42 1.42 — — — — — — —
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-Road
Equipment

0.00 0.00 0.00 0.00 0.00 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-Road
Equipment

2.51 2.11 18.3 19.5 0.04 0.75 — 0.75 0.69 — 0.69 — 4,718 4,718 0.19 0.04 — 4,734 Dust
From
Material
Movement
— — — — — — 2.57 2.57 — 1.02 1.02 — — — — — — —
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-Road
Equipment

0.46 0.38 3.34 3.56 0.01 0.14 — 0.14 0.13 — 0.13 — 781 781 0.03 0.01 — 784 Dust
From
Material
Movement
— — — — — — 0.47 0.47 — 0.19 0.19 — — — — — — —
12 / 32
-------------------
Santee TCSP Program Construction Detailed Report, 2/29/2024 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 0.08 0.07 0.05 0.82 0.00 0.00 0.17 0.17 0.00 0.04 0.04 — 183 183 0.01 0.01 0.59 186 Vendor 0.01 < 0.005 0.09 0.04 < 0.005 < 0.005 0.02 0.02 < 0.005 0.01 0.01 — 72.1 72.1 < 0.005 0.01 0.16 75.4 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 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.08 0.07 0.06 0.72 0.00 0.00 0.17 0.17 0.00 0.04 0.04 — 173 173 0.01 0.01 0.02 175 Vendor 0.01 < 0.005 0.09 0.04 < 0.005 < 0.005 0.02 0.02 < 0.005 0.01 0.01 — 72.2 72.2 < 0.005 0.01 < 0.005 75.3 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.05 0.05 0.04 0.52 0.00 0.00 0.12 0.12 0.00 0.03 0.03 — 125 125 0.01 < 0.005 0.18 126 Vendor < 0.005 < 0.005 0.07 0.03 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 51.6 51.6 < 0.005 0.01 0.05 53.8 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.01 0.10 0.00 0.00 0.02 0.02 0.00 0.01 0.01 — 20.6 20.6 < 0.005 < 0.005 0.03 20.9 Vendor < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 8.54 8.54 < 0.005 < 0.005 0.01 8.91 Hauling 0.00 0.00 0.00 0.00 0.00 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 — — — — — — — — — — — — — — — — — —
13 / 32
Santee TCSP Program Construction Detailed Report, 2/29/2024 Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

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-Road
Equipment

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-Road
Equipment

0.88 0.74 6.72 9.25 0.02 0.24 — 0.24 0.22 — 0.22 — 1,714 1,714 0.07 0.01 — 1,720 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-Road
Equipment

0.16 0.13 1.23 1.69 < 0.005 0.04 — 0.04 0.04 — 0.04 — 284 284 0.01 < 0.005 — 285 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 1.47 1.35 0.94 15.7 0.00 0.00 3.23 3.23 0.00 0.76 0.76 — 3,494 3,494 0.16 0.13 11.3 3,547 Vendor 0.16 0.07 2.64 1.25 0.01 0.03 0.56 0.59 0.03 0.15 0.18 — 2,095 2,095 0.08 0.29 4.68 2,190 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 14 / 32
-------------------
Santee TCSP Program Construction Detailed Report, 2/29/2024 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 1.45 1.31 1.18 13.8 0.00 0.00 3.23 3.23 0.00 0.76 0.76 — 3,300 3,300 0.18 0.13 0.29 3,344 Vendor 0.15 0.07 2.74 1.27 0.01 0.03 0.56 0.59 0.03 0.15 0.18 — 2,097 2,097 0.08 0.29 0.12 2,187 Hauling 0.00 0.00 0.00 0.00 0.00 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 1.03 0.93 0.84 9.96 0.00 0.00 2.30 2.30 0.00 0.54 0.54 — 2,381 2,381 0.12 0.09 3.50 2,414 Vendor 0.11 0.05 1.94 0.90 0.01 0.02 0.40 0.42 0.02 0.11 0.13 — 1,499 1,499 0.06 0.21 1.45 1,564 Hauling 0.00 0.00 0.00 0.00 0.00 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 0.19 0.17 0.15 1.82 0.00 0.00 0.42 0.42 0.00 0.10 0.10 — 394 394 0.02 0.01 0.58 400 Vendor 0.02 0.01 0.35 0.17 < 0.005 < 0.005 0.07 0.08 < 0.005 0.02 0.02 — 248 248 0.01 0.03 0.24 259 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.9. Paving (2027) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location 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-Road
Equipment

0.88 0.74 6.94 9.95 0.01 0.30 — 0.30 0.27 — 0.27 — 1,511 1,511 0.06 0.01 — 1,516 Paving — 0.00 — — — — — — — — — — — — — — — —
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 15 / 32
Santee TCSP Program Construction Detailed Report, 2/29/2024 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.88 0.74 6.94 9.95 0.01 0.30 — 0.30 0.27 — 0.27 — 1,511 1,511 0.06 0.01 — 1,516 Paving — 0.00 — — — — — — — — — — — — — — — —
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-Road
Equipment

0.63 0.53 4.97 7.12 0.01 0.21 — 0.21 0.20 — 0.20 — 1,081 1,081 0.04 0.01 — 1,084 Paving — 0.00 — — — — — — — — — — — — — — — —
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-Road
Equipment

0.11 0.10 0.91 1.30 < 0.005 0.04 — 0.04 0.04 — 0.04 — 179 179 0.01 < 0.005 — 180 Paving — 0.00 — — — — — — — — — — — — — — — —
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 0.06 0.05 0.04 0.61 0.00 0.00 0.13 0.13 0.00 0.03 0.03 — 137 137 0.01 < 0.005 0.44 139 Vendor < 0.005 < 0.005 0.06 0.03 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 48.1 48.1 < 0.005 0.01 0.11 50.2 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.06 0.05 0.05 0.54 0.00 0.00 0.13 0.13 0.00 0.03 0.03 — 129 129 0.01 0.01 0.01 131 16 / 32
-------------------
Santee TCSP Program Construction Detailed Report, 2/29/2024 Vendor < 0.005 < 0.005 0.06 0.03 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 48.1 48.1 < 0.005 0.01 < 0.005 50.2 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.04 0.04 0.03 0.39 0.00 0.00 0.09 0.09 0.00 0.02 0.02 — 93.4 93.4 < 0.005 < 0.005 0.14 94.7 Vendor < 0.005 < 0.005 0.04 0.02 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 34.4 34.4 < 0.005 < 0.005 0.03 35.9 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.01 0.07 0.00 0.00 0.02 0.02 0.00 < 0.005 < 0.005 — 15.5 15.5 < 0.005 < 0.005 0.02 15.7 Vendor < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 5.69 5.69 < 0.005 < 0.005 0.01 5.94 Hauling 0.00 0.00 0.00 0.00 0.00 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. Architectural Coating (2027) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.14 0.11 0.83 1.13 < 0.005 0.02 — 0.02 0.02 — 0.02 — 134 134 0.01 < 0.005 — 134 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-Road
Equipment

0.14 0.11 0.83 1.13 < 0.005 0.02 — 0.02 0.02 — 0.02 — 134 134 0.01 < 0.005 — 134 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 17 / 32
Santee TCSP Program Construction Detailed Report, 2/29/2024 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.10 0.08 0.59 0.80 < 0.005 0.01 — 0.01 0.01 — 0.01 — 95.5 95.5 < 0.005 < 0.005 — 95.8 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-Road
Equipment

0.02 0.01 0.11 0.15 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 15.8 15.8 < 0.005 < 0.005 — 15.9 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 0.29 0.27 0.19 3.13 0.00 0.00 0.65 0.65 0.00 0.15 0.15 — 699 699 0.03 0.03 2.27 709 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 0.29 0.26 0.24 2.75 0.00 0.00 0.65 0.65 0.00 0.15 0.15 — 660 660 0.04 0.03 0.06 669 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 0.21 0.19 0.17 1.99 0.00 0.00 0.46 0.46 0.00 0.11 0.11 — 476 476 0.02 0.02 0.70 483 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 0.04 0.03 0.03 0.36 0.00 0.00 0.08 0.08 0.00 0.02 0.02 — 78.8 78.8 < 0.005 < 0.005 0.12 79.9 18 / 32
Santee TCSP Program Construction Detailed Report, 2/29/2024 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

4. Operations Emissions Details

4.10. Soil Carbon Accumulation By Vegetation Type

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

4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
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 — — — — — — — — — — — — — — — — — —
19 / 32
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 — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —
Daily, — — — — — — — — — — — — — — — — — —
Winter
(Max)
Avoided — — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Sequest — — — — — — — — — — — — — — — — — —
ered
Subtotal — — — — — — — — — — — — — — — — — —
-------------------
Santee TCSP Program Construction Detailed Report, 2/29/2024 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) 20 / 32
Santee TCSP Program Construction Detailed Report, 2/29/2024 Remove
d
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Avoided — — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Sequest
ered
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Remove
d
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —

5. Activity Data

5.1. Construction Schedule
Phase Name Phase Type Start Date End Date Days Per Week Work Days per Phase Phase Description Demolition Demolition 1/1/2027 12/31/2027 5.00 261 —
Site Preparation Site Preparation 1/1/2027 12/31/2027 5.00 261 — Grading Grading 1/1/2027 12/31/2027 5.00 261 —
Building Construction Building Construction 1/1/2027 12/31/2027 5.00 261 — Paving Paving 1/1/2027 12/31/2027 5.00 261 —
Architectural Coating Architectural Coating 1/1/2027 12/31/2027 5.00 261 —

5.2. Off-Road Equipment
21 / 32
Santee TCSP Program Construction Detailed Report, 2/29/2024

5.2.1. Unmitigated
Phase Name Equipment Type Fuel Type Engine Tier Number per Day Hours Per Day Horsepower Load Factor Demolition Concrete/Industrial
Saws
Diesel Average 1.00 8.00 33.0 0.73
Demolition Excavators Diesel Average 3.00 8.00 36.0 0.38 Demolition Rubber Tired Dozers Diesel Average 2.00 8.00 367 0.40 Site Preparation Rubber Tired Dozers Diesel Average 3.00 8.00 367 0.40 Site Preparation Tractors/Loaders/Backh
oes
Diesel Average 4.00 8.00 84.0 0.37
Grading Excavators Diesel Average 2.00 8.00 36.0 0.38
Grading Graders Diesel Average 1.00 8.00 148 0.41
Grading Rubber Tired Dozers Diesel Average 1.00 8.00 367 0.40 Grading Scrapers Diesel Average 2.00 8.00 423 0.48
Grading Tractors/Loaders/Backh
oes
Diesel Average 2.00 8.00 84.0 0.37
Building Construction Cranes Diesel Average 1.00 7.00 367 0.29 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 Tractors/Loaders/Backh
oes
Diesel Average 3.00 7.00 84.0 0.37
Building Construction Welders Diesel Average 1.00 8.00 46.0 0.45 Paving Pavers Diesel Average 2.00 8.00 81.0 0.42
Paving Paving Equipment Diesel Average 2.00 8.00 89.0 0.36 Paving Rollers Diesel Average 2.00 8.00 36.0 0.38
Architectural Coating Air Compressors Diesel Average 1.00 6.00 37.0 0.48

5.3. Construction Vehicles
22 / 32
Santee TCSP Program Construction Detailed Report, 2/29/2024

5.3.1. Unmitigated
Phase Name Trip Type One-Way Trips per Day Miles per Trip Vehicle Mix Demolition — — — —
Demolition Worker 15.0 12.0 LDA,LDT1,LDT2
Demolition Vendor 2.00 7.63 HHDT,MHDT
Demolition Hauling 0.00 20.0 HHDT
Demolition Onsite truck — — HHDT
Site Preparation — — — —
Site Preparation Worker 17.5 12.0 LDA,LDT1,LDT2
Site Preparation Vendor 0.00 7.63 HHDT,MHDT
Site Preparation Hauling 0.00 20.0 HHDT
Site Preparation Onsite truck — — HHDT
Grading — — — —
Grading Worker 20.0 12.0 LDA,LDT1,LDT2
Grading Vendor 3.00 7.63 HHDT,MHDT
Grading Hauling 0.00 20.0 HHDT
Grading Onsite truck — — HHDT
Building Construction — — — —
Building Construction Worker 382 12.0 LDA,LDT1,LDT2
Building Construction Vendor 87.2 7.63 HHDT,MHDT
Building Construction Hauling 0.00 20.0 HHDT
Building Construction Onsite truck — — HHDT
Paving — — — —
Paving Worker 15.0 12.0 LDA,LDT1,LDT2
Paving Vendor 2.00 7.63 HHDT,MHDT
Paving Hauling 0.00 20.0 HHDT
Paving Onsite truck — — HHDT
23 / 32
Santee TCSP Program Construction Detailed Report, 2/29/2024 Architectural Coating — — — —
Architectural Coating Worker 76.5 12.0 LDA,LDT1,LDT2
Architectural Coating Vendor — 7.63 HHDT,MHDT
Architectural Coating Hauling 0.00 20.0 HHDT
Architectural Coating Onsite truck — — HHDT

5.4. Vehicles

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

5.6. Dust Mitigation

5.6.1. Construction Earthmoving Activities
Phase Name Material Imported (cy) Material Exported (cy) Acres Graded (acres) Material Demolished (sq. ft.) Acres Paved (acres) Demolition 0.00 0.00 0.00 — —
Site Preparation — — 392 0.00 —
Grading — — 783 0.00 —
Paving 0.00 0.00 0.00 0.00 0.00

5.6.2. Construction Earthmoving Control Strategies
Control Strategies Applied Frequency (per day) PM10 Reduction PM2.5 Reduction Water Exposed Area 2 61% 61%
Water Demolished Area 2 36% 36%
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Santee TCSP Program Construction Detailed Report, 2/29/2024

5.7. Construction Paving
Land Use Area Paved (acres) % Asphalt
Strip Mall 0.00 0%
Regional Shopping Center 0.00 0%
Government (Civic Center) 0.00 0%
Office Park 0.00 0%
City Park 0.00 0%
Condo/Townhouse — 0%
Apartments Low Rise — 0%

5.8. Construction Electricity Consumption and Emissions Factors kWh per Year and Emission Factor (lb/MWh)
Year kWh per Year CO2 CH4 N2O
2027 0.00 589 0.03 < 0.005

5.18. Vegetation

5.18.1. Land Use Change

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

5.18.1. Biomass Cover Type

5.18.1.1. Unmitigated
Biomass Cover Type Initial Acres Final Acres
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Santee TCSP Program Construction Detailed Report, 2/29/2024

5.18.2. Sequestration

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

6. Climate Risk Detailed Report

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.

6.2. Initial Climate Risk Scores
Climate Hazard Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score Temperature and Extreme Heat N/A N/A N/A N/A
Extreme Precipitation N/A N/A N/A N/A
26 / 32
Santee TCSP Program Construction Detailed Report, 2/29/2024 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 N/A N/A N/A N/A
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.

6.3. Adjusted Climate Risk Scores
Climate Hazard Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score Temperature and Extreme Heat N/A N/A N/A 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 N/A N/A N/A N/A
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
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Santee TCSP Program Construction Detailed Report, 2/29/2024

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 64.7
AQ-PM 45.1
AQ-DPM 25.7
Drinking Water 10.9
Lead Risk Housing 17.5
Pesticides 0.00
Toxic Releases 25.6
Traffic 48.6
Effect Indicators —
CleanUp Sites 37.8
Groundwater 40.8
Haz Waste Facilities/Generators 84.7
Impaired Water Bodies 77.3
Solid Waste 9.67
Sensitive Population —
Asthma 35.6
Cardio-vascular 30.2
Low Birth Weights 18.6
Socioeconomic Factor Indicators —
Education 43.4
Housing 19.8
28 / 32
Santee TCSP Program Construction Detailed Report, 2/29/2024 Linguistic 10.4
Poverty 16.6
Unemployment 28.2

Indicator Result for Project Census Tract
Economic —
Above Poverty 66.11061209
Employed 1.296034903
Median HI 58.75785962
Education —
Bachelor's or higher 47.36301809
High school enrollment 17.87501604
Preschool enrollment 14.26921596
Transportation —
Auto Access 76.73553189
Active commuting 33.56858719
Social —
2-parent households 27.65302194
Voting 75.72180162
Neighborhood —
Alcohol availability 42.80764789
Park access 24.26536635
Retail density 59.4636212
Supermarket access 60.82381625
Tree canopy 8.135506224
29 / 32
Santee TCSP Program Construction Detailed Report, 2/29/2024 Housing —
Homeownership 43.19260875
Housing habitability 69.11330681
Low-inc homeowner severe housing cost burden 75.55498524 Low-inc renter severe housing cost burden 83.49801104
Uncrowded housing 47.26036186
Health Outcomes —
Insured adults 74.51559091
Arthritis 0.0
Asthma ER Admissions 59.9
High Blood Pressure 0.0
Cancer (excluding skin) 0.0
Asthma 0.0
Coronary Heart Disease 0.0
Chronic Obstructive Pulmonary Disease 0.0
Diagnosed Diabetes 0.0
Life Expectancy at Birth 1.7
Cognitively Disabled 36.6
Physically Disabled 78.7
Heart Attack ER Admissions 49.6
Mental Health Not Good 0.0
Chronic Kidney Disease 0.0
Obesity 0.0
Pedestrian Injuries 19.6
Physical Health Not Good 0.0
Stroke 0.0
Health Risk Behaviors —
30 / 32
Santee TCSP Program Construction Detailed Report, 2/29/2024 Binge Drinking 0.0
Current Smoker 0.0
No Leisure Time for Physical Activity 0.0
Climate Change Exposures —
Wildfire Risk 0.0
SLR Inundation Area 0.0
Children 48.8
Elderly 83.1
English Speaking 76.6
Foreign-born 6.0
Outdoor Workers 58.3
Climate Change Adaptive Capacity —
Impervious Surface Cover 55.9
Traffic Density 49.3
Traffic Access 51.5
Other Indices —
Hardship 31.7
Other Decision Support —
2016 Voting 76.0

7.3. Overall Health & Equity Scores
Metric Result for Project Census Tract
CalEnviroScreen 4.0 Score for Project Location (a) 18.0 Healthy Places Index Score for Project Location (b) 34.0 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 31 / 32
Santee TCSP Program Construction Detailed Report, 2/29/2024 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
Screen Justification
Land Use Assuming 25% of SP construction occurs in one year. Residences in Sites 16A, 16B, 20A, and 20B not included.

Construction: Construction Phases Default construction activities assumed to occur over one year. 32 / 32
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Santee TCSP Program 2035 Operations 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

2.4. Operations Emissions Compared Against Thresholds

2.5. Operations Emissions by Sector, Unmitigated

2.6. Operations Emissions by Sector, Mitigated

4. Operations Emissions Details

4.1. Mobile Emissions by Land Use

4.1.1. Unmitigated

4.1.2. Mitigated

4.2. Energy

4.2.1. Electricity Emissions By Land Use - Unmitigated
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Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024

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
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Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024

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

5.9. Operational Mobile Sources

5.9.1. Unmitigated
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Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024

5.9.2. Mitigated

5.10. Operational Area Sources

5.10.1. Hearths

5.10.1.1. Unmitigated

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
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Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024

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

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
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Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024

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

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
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Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024

1. Basic Project Information

1.1. Basic Project Information
Data Field Value
Project Name Santee TCSP Program 2035 Operations
Operational Year 2035
Lead Agency City of Santee
Land Use Scale Plan/community
Analysis Level for Defaults County
Windspeed (m/s) 2.60
Precipitation (days) 7.60
Location 32.845263451000434, -116.97647155078744
County San Diego
City Santee
Air District San Diego County APCD
Air Basin San Diego
TAZ 6529
EDFZ 12
Electric Utility San Diego Gas & Electric
Gas Utility San Diego Gas & Electric
App Version 2022.1.1.21

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
Strip Mall 592 1000sqft 133 592,258 59,225 — — —
7 / 67
-------------------
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Regional Shopping
Center

24.6 1000sqft 8.81 24,625 2,462 — — —
Government (Civic
Center)
187 1000sqft 45.7 187,223 18,722 — — —
Office Park 240 1000sqft 24.8 240,206 24,020 — — —
City Park 59.4 Acre 59.4 0.00 59.4 59.4 — —
Condo/Townhouse 982 Dwelling Unit 50.9 1,040,920 104,092 — 2,740 — Apartments Low
Rise
1,170 Dwelling Unit 31.3 1,240,200 124,020 — 3,264 —
Apartments Mid Rise 988 Dwelling Unit 21.1 948,480 94,848 — 2,757 —

1.3. User-Selected Emission Reduction Measures by Emissions Sector Sector # Measure Title
Area Sources LL-1 Replace Gas Powered Landscape Equipment with Zero-Emission Landscape Equipment

2. Emissions Summary

2.4. Operations 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. 207 282 113 1,430 3.36 3.15 330 333 3.00 83.7 86.7 2,751 363,224 365,975 294 13.5 399 377,736 Mit. 183 259 111 1,206 3.35 2.99 330 333 2.88 83.7 86.6 2,751 362,615 365,366 294 13.5 399 377,125 %
Reduced
12% 8% 2% 16% < 0.5% 5% — < 0.5% 4% — < 0.5% — < 0.5% < 0.5% < 0.5% < 0.5% — < 0.5% 8 / 67
-------------------
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 181 258 121 1,135 3.21 2.99 330 333 2.88 83.7 86.6 2,751 347,713 350,464 294 14.2 37.6 362,092 Mit. 181 258 121 1,135 3.21 2.99 330 333 2.88 83.7 86.6 2,751 347,713 350,464 294 14.2 37.6 362,092 %
Reduced
— — — — — — — — — — — — — — — — — —
Average
Daily
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 189 265 119 1,232 3.19 3.05 324 327 2.91 82.2 85.1 2,751 346,040 348,791 294 13.9 186 360,470 Mit. 177 254 118 1,121 3.19 2.97 324 327 2.86 82.2 85.1 2,751 345,739 348,490 294 13.9 186 360,169 %
Reduced
6% 4% 1% 9% < 0.5% 3% — < 0.5% 2% — < 0.5% — < 0.5% < 0.5% < 0.5% < 0.5% — < 0.5% Annual
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 34.5 48.3 21.7 225 0.58 0.56 59.2 59.7 0.53 15.0 15.5 455 57,291 57,746 48.7 2.30 30.8 59,680 Mit. 32.3 46.3 21.5 205 0.58 0.54 59.2 59.7 0.52 15.0 15.5 455 57,241 57,697 48.7 2.30 30.8 59,630 %
Reduced
6% 4% 1% 9% < 0.5% 3% — < 0.5% 2% — < 0.5% — < 0.5% < 0.5% < 0.5% < 0.5% — < 0.5%

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) 9 / 67
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 181 167 95.9 1,197 3.26 1.78 330 332 1.66 83.7 85.4 — 331,590 331,590 13.4 12.1 371 335,895 Area 24.4 114 2.03 224 0.01 0.16 — 0.16 0.12 — 0.12 0.00 663 663 0.03 0.01 — 665 Energy 1.76 0.88 15.3 8.32 0.10 1.21 — 1.21 1.21 — 1.21 — 30,207 30,207 3.86 0.30 — 30,392 Water — — — — — — — — — — — 452 765 1,217 46.5 1.12 — 2,713 Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 10 / 67
Waste — — — — — — — — — — — 2,299 0.00 2,299 230 0.00 — 8,043 Refrig. — — — — — — — — — — — — — — — — 28.0 28.0
Total 207 282 113 1,430 3.36 3.15 330 333 3.00 83.7 86.7 2,751 363,224 365,975 294 13.5 399 377,736 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Mobile 180 165 106 1,127 3.11 1.78 330 332 1.66 83.7 85.4 — 316,742 316,742 14.2 12.8 9.62 320,916 Area 0.00 91.5 0.00 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 1.76 0.88 15.3 8.32 0.10 1.21 — 1.21 1.21 — 1.21 — 30,207 30,207 3.86 0.30 — 30,392 Water — — — — — — — — — — — 452 765 1,217 46.5 1.12 — 2,713 Waste — — — — — — — — — — — 2,299 0.00 2,299 230 0.00 — 8,043 Refrig. — — — — — — — — — — — — — — — — 28.0 28.0
Total 181 258 121 1,135 3.21 2.99 330 333 2.88 83.7 86.6 2,751 347,713 350,464 294 14.2 37.6 362,092 Average
Daily
— — — — — — — — — — — — — — — — — —
Mobile 175 161 103 1,113 3.09 1.76 324 326 1.64 82.2 83.9 — 314,741 314,741 13.8 12.5 158 318,966 Area 12.0 103 1.00 111 0.01 0.08 — 0.08 0.06 — 0.06 0.00 327 327 0.01 < 0.005 — 328 Energy 1.76 0.88 15.3 8.32 0.10 1.21 — 1.21 1.21 — 1.21 — 30,207 30,207 3.86 0.30 — 30,392 Water — — — — — — — — — — — 452 765 1,217 46.5 1.12 — 2,713 Waste — — — — — — — — — — — 2,299 0.00 2,299 230 0.00 — 8,043 Refrig. — — — — — — — — — — — — — — — — 28.0 28.0
Total 189 265 119 1,232 3.19 3.05 324 327 2.91 82.2 85.1 2,751 346,040 348,791 294 13.9 186 360,470 Annual — — — — — — — — — — — — — — — — — —
Mobile 32.0 29.4 18.7 203 0.56 0.32 59.2 59.5 0.30 15.0 15.3 — 52,109 52,109 2.28 2.07 26.2 52,808 Area 2.19 18.8 0.18 20.2 < 0.005 0.01 — 0.01 0.01 — 0.01 0.00 54.1 54.1 < 0.005 < 0.005 — 54.3 Energy 0.32 0.16 2.79 1.52 0.02 0.22 — 0.22 0.22 — 0.22 — 5,001 5,001 0.64 0.05 — 5,032 Water — — — — — — — — — — — 74.8 127 201 7.70 0.19 — 449 Waste — — — — — — — — — — — 381 0.00 381 38.0 0.00 — 1,332 Refrig. — — — — — — — — — — — — — — — — 4.63 4.63
-------------------
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Total 34.5 48.3 21.7 225 0.58 0.56 59.2 59.7 0.53 15.0 15.5 455 57,291 57,746 48.7 2.30 30.8 59,680

2.6. Operations Emissions by Sector, Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) 11 / 67
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 181 167 95.9 1,197 3.26 1.78 330 332 1.66 83.7 85.4 — 331,590 331,590 13.4 12.1 371 335,895 Area 0.00 91.5 0.00 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 1.76 0.88 15.3 8.32 0.10 1.21 — 1.21 1.21 — 1.21 — 30,260 30,260 3.87 0.30 — 30,447 Water — — — — — — — — — — — 452 765 1,217 46.5 1.12 — 2,713 Waste — — — — — — — — — — — 2,299 0.00 2,299 230 0.00 — 8,043 Refrig. — — — — — — — — — — — — — — — — 28.0 28.0
Total 183 259 111 1,206 3.35 2.99 330 333 2.88 83.7 86.6 2,751 362,615 365,366 294 13.5 399 377,125 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Mobile 180 165 106 1,127 3.11 1.78 330 332 1.66 83.7 85.4 — 316,742 316,742 14.2 12.8 9.62 320,916 Area 0.00 91.5 0.00 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 1.76 0.88 15.3 8.32 0.10 1.21 — 1.21 1.21 — 1.21 — 30,207 30,207 3.86 0.30 — 30,392 Water — — — — — — — — — — — 452 765 1,217 46.5 1.12 — 2,713 Waste — — — — — — — — — — — 2,299 0.00 2,299 230 0.00 — 8,043 Refrig. — — — — — — — — — — — — — — — — 28.0 28.0
Total 181 258 121 1,135 3.21 2.99 330 333 2.88 83.7 86.6 2,751 347,713 350,464 294 14.2 37.6 362,092 Average
Daily
— — — — — — — — — — — — — — — — — —
Mobile 175 161 103 1,113 3.09 1.76 324 326 1.64 82.2 83.9 — 314,741 314,741 13.8 12.5 158 318,966 Area 0.00 91.5 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Energy 1.76 0.88 15.3 8.32 0.10 1.21 — 1.21 1.21 — 1.21 — 30,233 30,233 3.86 0.30 — 30,419 Water — — — — — — — — — — — 452 765 1,217 46.5 1.12 — 2,713 Waste — — — — — — — — — — — 2,299 0.00 2,299 230 0.00 — 8,043 Refrig. — — — — — — — — — — — — — — — — 28.0 28.0
Total 177 254 118 1,121 3.19 2.97 324 327 2.86 82.2 85.1 2,751 345,739 348,490 294 13.9 186 360,169 Annual — — — — — — — — — — — — — — — — — —
Mobile 32.0 29.4 18.7 203 0.56 0.32 59.2 59.5 0.30 15.0 15.3 — 52,109 52,109 2.28 2.07 26.2 52,808 Area 0.00 16.7 0.00 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 0.32 0.16 2.79 1.52 0.02 0.22 — 0.22 0.22 — 0.22 — 5,005 5,005 0.64 0.05 — 5,036 Water — — — — — — — — — — — 74.8 127 201 7.70 0.19 — 449 Waste — — — — — — — — — — — 381 0.00 381 38.0 0.00 — 1,332 Refrig. — — — — — — — — — — — — — — — — 4.63 4.63
Total 32.3 46.3 21.5 205 0.58 0.54 59.2 59.7 0.52 15.0 15.5 455 57,241 57,697 48.7 2.30 30.8 59,630

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) 12 / 67
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)
— — — — — — — — — — — — — — — — — —
Strip Mall 90.9 83.6 49.4 621 1.71 0.93 173 174 0.87 44.0 44.9 — 173,908 173,908 6.88 6.24 195 176,133 Regional
Shopping
Center

7.77 7.35 3.25 37.0 0.09 0.05 8.73 8.78 0.05 2.21 2.26 — 8,965 8,965 0.48 0.40 9.80 9,104 Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Governm
(Civic
Center)

6.90 6.35 3.74 47.1 0.13 0.07 13.2 13.2 0.07 3.34 3.40 — 13,194 13,194 0.52 0.47 14.8 13,363 Office
Park

14.7 13.6 8.01 101 0.28 0.15 28.1 28.3 0.14 7.14 7.28 — 28,213 28,213 1.12 1.01 31.6 28,574 City Park 1.05 0.97 0.57 7.17 0.02 0.01 2.00 2.01 0.01 0.51 0.52 — 2,008 2,008 0.08 0.07 2.25 2,034 Condo/T
ownhous
e

23.4 21.6 12.1 150 0.40 0.22 41.0 41.2 0.21 10.4 10.6 — 41,233 41,233 1.70 1.52 46.0 41,775 Apartme
nts
Low Rise

20.9 19.3 10.8 134 0.36 0.20 36.6 36.8 0.19 9.29 9.48 — 36,845 36,845 1.52 1.36 41.1 37,329 Apartme
nts
Mid Rise

15.4 14.3 8.00 99.2 0.27 0.15 27.1 27.2 0.14 6.86 7.00 — 27,224 27,224 1.12 1.00 30.4 27,582 Total 181 167 95.9 1,197 3.26 1.78 330 332 1.66 83.7 85.4 — 331,590 331,590 13.4 12.1 371 335,895 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Strip Mall 90.2 82.8 54.3 582 1.63 0.93 173 174 0.87 44.0 44.9 — 166,103 166,103 7.25 6.60 5.05 168,257 Regional
Shopping
Center

7.72 7.28 3.59 36.7 0.08 0.05 8.73 8.78 0.05 2.21 2.26 — 8,576 8,576 0.52 0.42 0.25 8,714 Governm
ent
(Civic
Center)

6.84 6.29 4.12 44.2 0.12 0.07 13.2 13.2 0.07 3.34 3.40 — 12,602 12,602 0.55 0.50 0.38 12,765 Office
Park

14.6 13.4 8.81 94.5 0.26 0.15 28.1 28.3 0.14 7.14 7.28 — 26,947 26,947 1.18 1.07 0.82 27,296 City Park 1.04 0.96 0.63 6.72 0.02 0.01 2.00 2.01 0.01 0.51 0.52 — 1,918 1,918 0.08 0.08 0.06 1,943 Condo/T
ownhous
e

23.2 21.4 13.3 142 0.39 0.22 41.0 41.2 0.21 10.4 10.6 — 39,390 39,390 1.80 1.61 1.19 39,917 13 / 67
CO2e
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Apartme
nts
Low Rise

20.7 19.1 11.9 127 0.35 0.20 36.6 36.8 0.19 9.29 9.48 — 35,198 35,198 1.61 1.44 1.07 35,669 Apartme
nts
Mid Rise

15.3 14.1 8.81 93.7 0.26 0.15 27.1 27.2 0.14 6.86 7.00 — 26,008 26,008 1.19 1.06 0.79 26,355 Total 180 165 106 1,127 3.11 1.78 330 332 1.66 83.7 85.4 — 316,742 316,742 14.2 12.8 9.62 320,916 Annual — — — — — — — — — — — — — — — — — —
Strip Mall 16.2 14.9 9.76 106 0.30 0.17 31.5 31.7 0.16 7.99 8.15 — 27,696 27,696 1.18 1.08 13.9 28,061 Regional
Shopping
Center

1.37 1.29 0.62 6.30 0.01 0.01 1.47 1.47 0.01 0.37 0.38 — 1,327 1,327 0.08 0.07 0.65 1,350 Governm
ent
(Civic
Center)

0.88 0.81 0.53 5.77 0.02 0.01 1.71 1.72 0.01 0.43 0.44 — 1,501 1,501 0.06 0.06 0.75 1,521 Office
Park

2.63 2.42 1.58 17.3 0.05 0.03 5.11 5.14 0.03 1.30 1.32 — 4,493 4,493 0.19 0.18 2.26 4,552 City Park 0.19 0.17 0.11 1.23 < 0.005 < 0.005 0.36 0.37 < 0.005 0.09 0.09 — 320 320 0.01 0.01 0.16 324 Condo/T
ownhous
e

4.17 3.85 2.39 25.9 0.07 0.04 7.45 7.49 0.04 1.89 1.93 — 6,568 6,568 0.29 0.26 3.29 6,657 Apartme
nts
Low Rise

3.73 3.44 2.14 23.1 0.06 0.04 6.65 6.69 0.03 1.69 1.72 — 5,869 5,869 0.26 0.24 2.94 5,948 Apartme
nts
Mid Rise

2.75 2.54 1.58 17.1 0.05 0.03 4.92 4.94 0.03 1.25 1.27 — 4,336 4,336 0.19 0.17 2.17 4,395 Total 32.0 29.4 18.7 203 0.56 0.32 59.2 59.5 0.30 15.0 15.3 — 52,109 52,109 2.28 2.07 26.2 52,808

4.1.2. Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) 14 / 67
Land TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R Use
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Strip Mall 90.9 83.6 49.4 621 1.71 0.93 173 174 0.87 44.0 44.9 — 173,908 173,908 6.88 6.24 195 176,133 Regional
Shopping
Center

7.77 7.35 3.25 37.0 0.09 0.05 8.73 8.78 0.05 2.21 2.26 — 8,965 8,965 0.48 0.40 9.80 9,104 Governm
ent
(Civic
Center)

6.90 6.35 3.74 47.1 0.13 0.07 13.2 13.2 0.07 3.34 3.40 — 13,194 13,194 0.52 0.47 14.8 13,363 Office
Park

23.4 21.6 12.1 150 0.40 0.22 41.0 41.2 0.21 10.4 10.6 — 41,233 41,233 1.70 1.52 46.0 41,775 Apartme
nts
Low Rise

20.9 19.3 10.8 134 0.36 0.20 36.6 36.8 0.19 9.29 9.48 — 36,845 36,845 1.52 1.36 41.1 37,329 Apartme
nts
Mid Rise

7.72 7.28 3.59 36.7 0.08 0.05 8.73 8.78 0.05 2.21 2.26 — 8,576 8,576 0.52 0.42 0.25 8,714 Governm
ent
(Civic
Center)

6.84 6.29 4.12 44.2 0.12 0.07 13.2 13.2 0.07 3.34 3.40 — 12,602 12,602 0.55 0.50 0.38 12,765 15 / 67
16 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Office
Park

23.2 21.4 13.3 142 0.39 0.22 41.0 41.2 0.21 10.4 10.6 — 39,390 39,390 1.80 1.61 1.19 39,917 Apartme
nts
Low Rise

20.7 19.1 11.9 127 0.35 0.20 36.6 36.8 0.19 9.29 9.48 — 35,198 35,198 1.61 1.44 1.07 35,669 Apartme
nts
Mid Rise

1.37 1.29 0.62 6.30 0.01 0.01 1.47 1.47 0.01 0.37 0.38 — 1,327 1,327 0.08 0.07 0.65 1,350 Governm
ent
(Civic
Center)

0.88 0.81 0.53 5.77 0.02 0.01 1.71 1.72 0.01 0.43 0.44 — 1,501 1,501 0.06 0.06 0.75 1,521 Office
Park

4.17 3.85 2.39 25.9 0.07 0.04 7.45 7.49 0.04 1.89 1.93 — 6,568 6,568 0.29 0.26 3.29 6,657 Apartme
nts
Low Rise

3.73 3.44 2.14 23.1 0.06 0.04 6.65 6.69 0.03 1.69 1.72 — 5,869 5,869 0.26 0.24 2.94 5,948 Apartme
nts
Mid Rise

2.75 2.54 1.58 17.1 0.05 0.03 4.92 4.94 0.03 1.25 1.27 — 4,336 4,336 0.19 0.17 2.17 4,395 Total 32.0 29.4 18.7 203 0.56 0.32 59.2 59.5 0.30 15.0 15.3 — 52,109 52,109 2.28 2.07 26.2 52,808 Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024

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) 17 / 67
Land
Use
Daily,
Summer
(Max)
Strip Mall
Regional
Shopping
Center
Governm
ent
(Civic
Center)
Office
Park
City Park
Condo/T
ownhous
e
Apartme
nts
Low Rise
Apartme
nts
Mid Rise
Total
Daily,
Winter
(Max)
Strip Mall
TOG
—
—
—
—
—
—
—
—
—
—
—
—
ROG
—
—
—
—
—
—
—
—
—
—
—
—
NOx
—
—
—
—
—
—
—
—
—
—
—
—
CO
—
—
—
—
—
—
—
—
—
—
—
—
SO2
—
—
—
—
—
—
—
—
—
—
—
—
PM10E
—
—
—
—
—
—
—
—
—
—
—
—
PM10D
—
—
—
—
—
—
—
—
—
—
—
—
PM10T
—
—
—
—
—
—
—
—
—
—
—
—
PM2.5E
—
—
—
—
—
—
—
—
—
—
—
—
PM2.5D
—
—
—
—
—
—
—
—
—
—
—
—
PM2.5T
—
—
—
—
—
—
—
—
—
—
—
—
BCO2
—
—
—
—
—
—
—
—
—
—
—
—
NBCO2
—
2,426
101
1,444
1,853

0.00 1,885
1,899
1,557
11,165
—
2,426
CO2T
—
2,426
101
1,444
1,853

0.00 1,885
1,899
1,557
11,165
—
2,426
CH4
—

0.47 0.02

0.28 0.36

0.00 0.37

0.37 0.30

2.17 —

0.47 N2O
—

0.06 < 0.005

0.03 0.04

0.00 0.04

0.04 0.04

0.26 —

0.06 R
—
—
—
—
—
—
—
—
—
—
—
—
CO2e
—
2,455
102
1,461
1,875

0.00 1,907
1,922
1,576
11,298
—
2,455
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Regional
Shopping
Center
— — — — — — — — — — — — 101 101 0.02 < 0.005 — 102
Governm
ent
(Civic
Center)
— — — — — — — — — — — — 1,444 1,444 0.28 0.03 — 1,461
Office
Park
— — — — — — — — — — — — 1,853 1,853 0.36 0.04 — 1,875
City Park — — — — — — — — — — — — 0.00 0.00 0.00 0.00 — 0.00 Condo/T
ownhous
e
— — — — — — — — — — — — 1,885 1,885 0.37 0.04 — 1,907
Apartme
nts
Low Rise
— — — — — — — — — — — — 1,899 1,899 0.37 0.04 — 1,922
Apartme
nts
Mid Rise
— — — — — — — — — — — — 1,557 1,557 0.30 0.04 — 1,576
Total — — — — — — — — — — — — 11,165 11,165 2.17 0.26 — 11,298 Annual — — — — — — — — — — — — — — — — — —
Strip Mall — — — — — — — — — — — — 402 402 0.08 0.01 — 406 Regional
Shopping
Center
— — — — — — — — — — — — 16.7 16.7 < 0.005 < 0.005 — 16.9 Governm
ent
(Civic
Center)
— — — — — — — — — — — — 239 239 0.05 0.01 — 242
Office
Park
— — — — — — — — — — — — 307 307 0.06 0.01 — 310
City Park — — — — — — — — — — — — 0.00 0.00 0.00 0.00 — 0.00 Condo/T
ownhous
e
— — — — — — — — — — — — 312 312 0.06 0.01 — 316
18 / 67
Land
Use
Daily,
Summer
(Max)
Strip Mall
Regional
Shopping
Center
Governm
ent
(Civic
Center)
Office
Park
City Park
Condo/T
ownhous
e
Apartme
nts
Low Rise
Apartme
nts
Mid Rise
TOG
—
—
—
—
—
—
—
—
—
ROG
—
—
—
—
—
—
—
—
—
NOx
—
—
—
—
—
—
—
—
—
CO
—
—
—
—
—
—
—
—
—
SO2
—
—
—
—
—
—
—
—
—
PM10E
—
—
—
—
—
—
—
—
—
PM10D
—
—
—
—
—
—
—
—
—
PM10T
—
—
—
—
—
—
—
—
—
PM2.5E
—
—
—
—
—
—
—
—
—
PM2.5D
—
—
—
—
—
—
—
—
—
PM2.5T
—
—
—
—
—
—
—
—
—
BCO2
—
—
—
—
—
—
—
—
—
NBCO2
—
2,434
101
1,446
1,856

0.00 1,897
1,914
1,570
CO2T
—
2,434
101
1,446
1,856

0.00 1,897
1,914
1,570
CH4
—

0.47 0.02

0.28 0.36

0.00 0.37

0.37 0.31
N2O
—

0.06 < 0.005

0.03 0.04

0.00 0.04

0.05 0.04
R
—
—
—
—
—
—
—
—
—
CO2e
—
2,463
102
1,464
1,878

0.00 1,920
1,937
1,588
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Apartme
Low Rise
— — — — — — — — — — — — 314 314 0.06 0.01 — 318
Apartme
nts
Mid Rise
— — — — — — — — — — — — 258 258 0.05 0.01 — 261
Total — — — — — — — — — — — — 1,848 1,848 0.36 0.04 — 1,870

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) 19 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Total — — — — — — — — — — — — 11,218 11,218 2.18 0.26 — 11,352 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Strip Mall — — — — — — — — — — — — 2,426 2,426 0.47 0.06 — 2,455 Regional
Shopping
Center
— — — — — — — — — — — — 101 101 0.02 < 0.005 — 102
Governm
ent
(Civic
Center)
— — — — — — — — — — — — 1,444 1,444 0.28 0.03 — 1,461
Office
Park
— — — — — — — — — — — — 1,853 1,853 0.36 0.04 — 1,875
City Park — — — — — — — — — — — — 0.00 0.00 0.00 0.00 — 0.00 Condo/T
ownhous
e
— — — — — — — — — — — — 1,885 1,885 0.37 0.04 — 1,907
Apartme
nts
Low Rise
— — — — — — — — — — — — 1,899 1,899 0.37 0.04 — 1,922
Apartme
nts
Mid Rise
— — — — — — — — — — — — 1,557 1,557 0.30 0.04 — 1,576
Total — — — — — — — — — — — — 11,165 11,165 2.17 0.26 — 11,298 Annual — — — — — — — — — — — — — — — — — —
Strip Mall — — — — — — — — — — — — 402 402 0.08 0.01 — 407 Regional
Shopping
Center
— — — — — — — — — — — — 16.7 16.7 < 0.005 < 0.005 — 16.9 Governm
ent
(Civic
Center)
— — — — — — — — — — — — 239 239 0.05 0.01 — 242
20 / 67
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)
— — — — — — — — — — — — — — — — — —
Strip Mall 0.08 0.04 0.69 0.58 < 0.005 0.05 — 0.05 0.05 — 0.05 — 821 821 0.07 < 0.005 — 824 Regional
Shopping
Center
< 0.005 < 0.005 0.03 0.02 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 34.2 34.2 < 0.005 < 0.005 — 34.2 Governm
ent
(Civic
Center)

0.18 0.09 1.61 1.35 0.01 0.12 — 0.12 0.12 — 0.12 — 1,921 1,921 0.17 < 0.005 — 1,927 Office
Park

0.23 0.11 2.07 1.74 0.01 0.16 — 0.16 0.16 — 0.16 — 2,465 2,465 0.22 < 0.005 — 2,472 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 Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Office
Park
— — — — — — — — — — — — 307 307 0.06 0.01 — 311
City Park — — — — — — — — — — — — 0.00 0.00 0.00 0.00 — 0.00 Condo/T
ownhous
e
— — — — — — — — — — — — 313 313 0.06 0.01 — 317
Apartme
nts
Low Rise
— — — — — — — — — — — — 316 316 0.06 0.01 — 319
Apartme
nts
Mid Rise
— — — — — — — — — — — — 259 259 0.05 0.01 — 262
Total — — — — — — — — — — — — 1,853 1,853 0.36 0.04 — 1,875

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) 21 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Condo/T
ownhous
e

0.60 0.30 5.10 2.17 0.03 0.41 — 0.41 0.41 — 0.41 — 6,472 6,472 0.57 0.01 — 6,490 Apartme
nts
Low Rise

0.47 0.23 4.01 1.71 0.03 0.32 — 0.32 0.32 — 0.32 — 5,087 5,087 0.45 0.01 — 5,101 Apartme
nts
Mid Rise

0.21 0.10 1.77 0.75 0.01 0.14 — 0.14 0.14 — 0.14 — 2,241 2,241 0.20 < 0.005 — 2,248 Total 1.76 0.88 15.3 8.32 0.10 1.21 — 1.21 1.21 — 1.21 — 19,042 19,042 1.69 0.04 — 19,095 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Strip Mall 0.08 0.04 0.69 0.58 < 0.005 0.05 — 0.05 0.05 — 0.05 — 821 821 0.07 < 0.005 — 824 Regional
Shopping
Center
< 0.005 < 0.005 0.03 0.02 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 34.2 34.2 < 0.005 < 0.005 — 34.2 Governm
ent
(Civic
Center)

0.18 0.09 1.61 1.35 0.01 0.12 — 0.12 0.12 — 0.12 — 1,921 1,921 0.17 < 0.005 — 1,927 Office
Park

0.23 0.11 2.07 1.74 0.01 0.16 — 0.16 0.16 — 0.16 — 2,465 2,465 0.22 < 0.005 — 2,472 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 Condo/T
ownhous
e

0.60 0.30 5.10 2.17 0.03 0.41 — 0.41 0.41 — 0.41 — 6,472 6,472 0.57 0.01 — 6,490 Apartme
nts
Low Rise

0.47 0.23 4.01 1.71 0.03 0.32 — 0.32 0.32 — 0.32 — 5,087 5,087 0.45 0.01 — 5,101 Apartme
nts
Mid Rise

0.21 0.10 1.77 0.75 0.01 0.14 — 0.14 0.14 — 0.14 — 2,241 2,241 0.20 < 0.005 — 2,248 Total 1.76 0.88 15.3 8.32 0.10 1.21 — 1.21 1.21 — 1.21 — 19,042 19,042 1.69 0.04 — 19,095 Annual — — — — — — — — — — — — — — — — — —
22 / 67
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)
— — — — — — — — — — — — — — — — — —
Strip Mall 0.08 0.04 0.69 0.58 < 0.005 0.05 — 0.05 0.05 — 0.05 — 821 821 0.07 < 0.005 — 824 Regional
Shopping
Center
< 0.005 < 0.005 0.03 0.02 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 34.2 34.2 < 0.005 < 0.005 — 34.2 Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Strip Mall 0.01 0.01 0.13 0.11 < 0.005 0.01 — 0.01 0.01 — 0.01 — 136 136 0.01 < 0.005 — 136 Regional
Shopping
Center
< 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 5.65 5.65 < 0.005 < 0.005 — 5.67 Governm
ent
(Civic
Center)

0.03 0.02 0.29 0.25 < 0.005 0.02 — 0.02 0.02 — 0.02 — 318 318 0.03 < 0.005 — 319 Office
Park

0.04 0.02 0.38 0.32 < 0.005 0.03 — 0.03 0.03 — 0.03 — 408 408 0.04 < 0.005 — 409 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 Condo/T
ownhous
e

0.11 0.05 0.93 0.40 0.01 0.08 — 0.08 0.08 — 0.08 — 1,072 1,072 0.09 < 0.005 — 1,074 Apartme
nts
Low Rise

0.09 0.04 0.73 0.31 < 0.005 0.06 — 0.06 0.06 — 0.06 — 842 842 0.07 < 0.005 — 844 Apartme
nts
Mid Rise

0.04 0.02 0.32 0.14 < 0.005 0.03 — 0.03 0.03 — 0.03 — 371 371 0.03 < 0.005 — 372 Total 0.32 0.16 2.79 1.52 0.02 0.22 — 0.22 0.22 — 0.22 — 3,153 3,153 0.28 0.01 — 3,161

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) 23 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Governm
ent

0.18 0.09 1.61 1.35 0.01 0.12 — 0.12 0.12 — 0.12 — 1,921 1,921 0.17 < 0.005 — 1,927 Office
Park

0.60 0.30 5.10 2.17 0.03 0.41 — 0.41 0.41 — 0.41 — 6,472 6,472 0.57 0.01 — 6,490 Apartme
nts
Low Rise

0.47 0.23 4.01 1.71 0.03 0.32 — 0.32 0.32 — 0.32 — 5,087 5,087 0.45 0.01 — 5,101 Apartme
nts
Mid Rise

0.18 0.09 1.61 1.35 0.01 0.12 — 0.12 0.12 — 0.12 — 1,921 1,921 0.17 < 0.005 — 1,927 Office
Park

0.60 0.30 5.10 2.17 0.03 0.41 — 0.41 0.41 — 0.41 — 6,472 6,472 0.57 0.01 — 6,490 Apartme
nts
Low Rise

0.47 0.23 4.01 1.71 0.03 0.32 — 0.32 0.32 — 0.32 — 5,087 5,087 0.45 0.01 — 5,101 24 / 67
-------------------
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Apartme
Mid Rise

0.21 0.10 1.77 0.75 0.01 0.14 — 0.14 0.14 — 0.14 — 2,241 2,241 0.20 < 0.005 — 2,248 Total 1.76 0.88 15.3 8.32 0.10 1.21 — 1.21 1.21 — 1.21 — 19,042 19,042 1.69 0.04 — 19,095 Annual — — — — — — — — — — — — — — — — — —
Strip Mall 0.01 0.01 0.13 0.11 < 0.005 0.01 — 0.01 0.01 — 0.01 — 136 136 0.01 < 0.005 — 136 Regional
Shopping
Center
< 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 5.65 5.65 < 0.005 < 0.005 — 5.67 Governm
ent
(Civic
Center)

0.03 0.02 0.29 0.25 < 0.005 0.02 — 0.02 0.02 — 0.02 — 318 318 0.03 < 0.005 — 319 Office
Park

0.11 0.05 0.93 0.40 0.01 0.08 — 0.08 0.08 — 0.08 — 1,072 1,072 0.09 < 0.005 — 1,074 Apartme
nts
Low Rise

0.09 0.04 0.73 0.31 < 0.005 0.06 — 0.06 0.06 — 0.06 — 842 842 0.07 < 0.005 — 844 Apartme
nts
Mid Rise

0.04 0.02 0.32 0.14 < 0.005 0.03 — 0.03 0.03 — 0.03 — 371 371 0.03 < 0.005 — 372 Total 0.32 0.16 2.79 1.52 0.02 0.22 — 0.22 0.22 — 0.22 — 3,153 3,153 0.28 0.01 — 3,161

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 25 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 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
Products
— 91.5 — — — — — — — — — — — — — — — —
Landsca
pe
Equipme
nt

24.4 22.9 2.03 224 0.01 0.16 — 0.16 0.12 — 0.12 — 663 663 0.03 0.01 — 665 Total 24.4 114 2.03 224 0.01 0.16 — 0.16 0.12 — 0.12 0.00 663 663 0.03 0.01 — 665 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
Products
— 91.5 — — — — — — — — — — — — — — — —
Total 0.00 91.5 0.00 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
Products
— 16.7 — — — — — — — — — — — — — — — —
Landsca
pe
Equipme
nt

2.19 2.06 0.18 20.2 < 0.005 0.01 — 0.01 0.01 — 0.01 — 54.1 54.1 < 0.005 < 0.005 — 54.3 Total 2.19 18.8 0.18 20.2 < 0.005 0.01 — 0.01 0.01 — 0.01 0.00 54.1 54.1 < 0.005 < 0.005 — 54.3

4.3.2. Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) 26 / 67
-------------------
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 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
Products
— 91.5 — — — — — — — — — — — — — — — —
Total 0.00 91.5 0.00 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)
— — — — — — — — — — — — — — — — — —
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
Products
— 91.5 — — — — — — — — — — — — — — — —
Total 0.00 91.5 0.00 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
Products
— 16.7 — — — — — — — — — — — — — — — —
Total 0.00 16.7 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00

4.4. 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 27 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Strip Mall — — — — — — — — — — — 84.1 141 225 8.65 0.21 — 503 Regional
Shopping
Center
— — — — — — — — — — — 3.50 5.86 9.36 0.36 0.01 — 20.9
Governm
ent
(Civic
Center)
— — — — — — — — — — — 71.3 118 190 7.33 0.18 — 425
Office
Park
— — — — — — — — — — — 81.8 136 218 8.42 0.20 — 488
City Park — — — — — — — — — — — 0.00 < 0.005 < 0.005 < 0.005 < 0.005 — < 0.005 Condo/T
ownhous
e
— — — — — — — — — — — 66.1 114 180 6.80 0.16 — 399
Apartme
nts
Low Rise
— — — — — — — — — — — 78.8 136 214 8.10 0.20 — 475
Apartme
nts
Mid Rise
— — — — — — — — — — — 66.5 114 181 6.84 0.16 — 401
Total — — — — — — — — — — — 452 765 1,217 46.5 1.12 — 2,713 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Strip Mall — — — — — — — — — — — 84.1 141 225 8.65 0.21 — 503 Regional
Shopping
Center
— — — — — — — — — — — 3.50 5.86 9.36 0.36 0.01 — 20.9
Governm
ent
(Civic
Center)
— — — — — — — — — — — 71.3 118 190 7.33 0.18 — 425
28 / 67
29 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Office
Park
— — — — — — — — — — — 81.8 136 218 8.42 0.20 — 488
City Park — — — — — — — — — — — 0.00 < 0.005 < 0.005 < 0.005 < 0.005 — < 0.005 Condo/T
ownhous
e
— — — — — — — — — — — 66.1 114 180 6.80 0.16 — 399
Apartme
nts
Low Rise
— — — — — — — — — — — 78.8 136 214 8.10 0.20 — 475
Apartme
nts
Mid Rise
— — — — — — — — — — — 66.5 114 181 6.84 0.16 — 401
Total — — — — — — — — — — — 452 765 1,217 46.5 1.12 — 2,713 Annual — — — — — — — — — — — — — — — — — —
Strip Mall — — — — — — — — — — — 13.9 23.3 37.3 1.43 0.03 — 83.3 Regional
Shopping
Center
— — — — — — — — — — — 0.58 0.97 1.55 0.06 < 0.005 — 3.46 Governm
ent
(Civic
Center)
— — — — — — — — — — — 11.8 19.6 31.4 1.21 0.03 — 70.4
Office
Park
— — — — — — — — — — — 13.5 22.5 36.1 1.39 0.03 — 80.9
City Park — — — — — — — — — — — 0.00 < 0.005 < 0.005 < 0.005 < 0.005 — < 0.005 Condo/T
ownhous
e
— — — — — — — — — — — 10.9 18.8 29.8 1.13 0.03 — 66.0
Apartme
nts
Low Rise
— — — — — — — — — — — 13.0 22.5 35.5 1.34 0.03 — 78.7
Apartme
nts
Mid Rise
— — — — — — — — — — — 11.0 18.9 29.9 1.13 0.03 — 66.4
Total — — — — — — — — — — — 74.8 127 201 7.70 0.19 — 449 Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024

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)
— — — — — — — — — — — — — — — — — —
Strip Mall — — — — — — — — — — — 84.1 141 225 8.65 0.21 — 503 Regional
Shopping
Center
— — — — — — — — — — — 3.50 5.86 9.36 0.36 0.01 — 20.9
Governm
ent
(Civic
Center)
— — — — — — — — — — — 71.3 118 190 7.33 0.18 — 425
Office
Park
— — — — — — — — — — — 81.8 136 218 8.42 0.20 — 488
City Park — — — — — — — — — — — 0.00 < 0.005 < 0.005 < 0.005 < 0.005 — < 0.005 Condo/T
ownhous
e
— — — — — — — — — — — 66.1 114 180 6.80 0.16 — 399
Apartme
nts
Low Rise
— — — — — — — — — — — 78.8 136 214 8.10 0.20 — 475
Apartme
nts
Mid Rise
— — — — — — — — — — — 66.5 114 181 6.84 0.16 — 401
Total — — — — — — — — — — — 452 765 1,217 46.5 1.12 — 2,713 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Strip Mall — — — — — — — — — — — 84.1 141 225 8.65 0.21 — 503 30 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Regional
Shopping
Center
— — — — — — — — — — — 3.50 5.86 9.36 0.36 0.01 — 20.9
Governm
ent
(Civic
Center)
— — — — — — — — — — — 71.3 118 190 7.33 0.18 — 425
Office
Park
— — — — — — — — — — — 81.8 136 218 8.42 0.20 — 488
City Park — — — — — — — — — — — 0.00 < 0.005 < 0.005 < 0.005 < 0.005 — < 0.005 Condo/T
ownhous
e
— — — — — — — — — — — 66.1 114 180 6.80 0.16 — 399
Apartme
nts
Low Rise
— — — — — — — — — — — 78.8 136 214 8.10 0.20 — 475
Apartme
nts
Mid Rise
— — — — — — — — — — — 66.5 114 181 6.84 0.16 — 401
Total — — — — — — — — — — — 452 765 1,217 46.5 1.12 — 2,713 Annual — — — — — — — — — — — — — — — — — —
Strip Mall — — — — — — — — — — — 13.9 23.3 37.3 1.43 0.03 — 83.3 Regional
Shopping
Center
— — — — — — — — — — — 0.58 0.97 1.55 0.06 < 0.005 — 3.46 Governm
ent
(Civic
Center)
— — — — — — — — — — — 11.8 19.6 31.4 1.21 0.03 — 70.4
Office
Park
— — — — — — — — — — — 13.5 22.5 36.1 1.39 0.03 — 80.9
City Park — — — — — — — — — — — 0.00 < 0.005 < 0.005 < 0.005 < 0.005 — < 0.005 Condo/T
ownhous
e
— — — — — — — — — — — 10.9 18.8 29.8 1.13 0.03 — 66.0
31 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Apartme
Low Rise
— — — — — — — — — — — 13.0 22.5 35.5 1.34 0.03 — 78.7
Apartme
nts
Mid Rise
— — — — — — — — — — — 11.0 18.9 29.9 1.13 0.03 — 66.4
Total — — — — — — — — — — — 74.8 127 201 7.70 0.19 — 449

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) 32 / 67
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)
— — — — — — — — — — — — — — — — — —
Strip Mall — — — — — — — — — — — 335 0.00 335 33.5 0.00 — 1,173 Regional
Shopping
Center
— — — — — — — — — — — 13.9 0.00 13.9 1.39 0.00 — 48.8
Governm
ent
(Civic
Center)
— — — — — — — — — — — 575 0.00 575 57.5 0.00 — 2,012
Office
Park
— — — — — — — — — — — 120 0.00 120 12.0 0.00 — 421
City Park — — — — — — — — — — — 2.75 0.00 2.75 0.27 0.00 — 9.63 Condo/T
ownhous
e
— — — — — — — — — — — 391 0.00 391 39.1 0.00 — 1,369
Apartme
nts
Low Rise
— — — — — — — — — — — 466 0.00 466 46.6 0.00 — 1,631
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Apartme
Mid Rise
— — — — — — — — — — — 394 0.00 394 39.4 0.00 — 1,378
Total — — — — — — — — — — — 2,299 0.00 2,299 230 0.00 — 8,043 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Strip Mall — — — — — — — — — — — 335 0.00 335 33.5 0.00 — 1,173 Regional
Shopping
Center
— — — — — — — — — — — 13.9 0.00 13.9 1.39 0.00 — 48.8
Governm
ent
(Civic
Center)
— — — — — — — — — — — 575 0.00 575 57.5 0.00 — 2,012
Office
Park
— — — — — — — — — — — 120 0.00 120 12.0 0.00 — 421
City Park — — — — — — — — — — — 2.75 0.00 2.75 0.27 0.00 — 9.63 Condo/T
ownhous
e
— — — — — — — — — — — 391 0.00 391 39.1 0.00 — 1,369
Apartme
nts
Low Rise
— — — — — — — — — — — 466 0.00 466 46.6 0.00 — 1,631
Apartme
nts
Mid Rise
— — — — — — — — — — — 394 0.00 394 39.4 0.00 — 1,378
Total — — — — — — — — — — — 2,299 0.00 2,299 230 0.00 — 8,043 Annual — — — — — — — — — — — — — — — — — —
Strip Mall — — — — — — — — — — — 55.5 0.00 55.5 5.55 0.00 — 194 Regional
Shopping
Center
— — — — — — — — — — — 2.31 0.00 2.31 0.23 0.00 — 8.07
33 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Governm
ent
(Civic
Center)
— — — — — — — — — — — 95.2 0.00 95.2 9.52 0.00 — 333
Office
Park
— — — — — — — — — — — 19.9 0.00 19.9 1.99 0.00 — 69.7
City Park — — — — — — — — — — — 0.46 0.00 0.46 0.05 0.00 — 1.59 Condo/T
ownhous
e
— — — — — — — — — — — 64.8 0.00 64.8 6.48 0.00 — 227
Apartme
nts
Low Rise
— — — — — — — — — — — 77.2 0.00 77.2 7.71 0.00 — 270
Apartme
nts
Mid Rise
— — — — — — — — — — — 65.2 0.00 65.2 6.52 0.00 — 228
Total — — — — — — — — — — — 381 0.00 381 38.0 0.00 — 1,332

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)
— — — — — — — — — — — — — — — — — —
Strip Mall — — — — — — — — — — — 335 0.00 335 33.5 0.00 — 1,173 Regional
Shopping
Center
— — — — — — — — — — — 13.9 0.00 13.9 1.39 0.00 — 48.8
Governm
ent
(Civic
Center)
— — — — — — — — — — — 575 0.00 575 57.5 0.00 — 2,012
34 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Office
Park
— — — — — — — — — — — 120 0.00 120 12.0 0.00 — 421
City Park — — — — — — — — — — — 2.75 0.00 2.75 0.27 0.00 — 9.63 Condo/T
ownhous
e
— — — — — — — — — — — 391 0.00 391 39.1 0.00 — 1,369
Apartme
nts
Low Rise
— — — — — — — — — — — 466 0.00 466 46.6 0.00 — 1,631
Apartme
nts
Mid Rise
— — — — — — — — — — — 394 0.00 394 39.4 0.00 — 1,378
Total — — — — — — — — — — — 2,299 0.00 2,299 230 0.00 — 8,043 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Strip Mall — — — — — — — — — — — 335 0.00 335 33.5 0.00 — 1,173 Regional
Shopping
Center
— — — — — — — — — — — 13.9 0.00 13.9 1.39 0.00 — 48.8
Governm
ent
(Civic
Center)
— — — — — — — — — — — 575 0.00 575 57.5 0.00 — 2,012
Office
Park
— — — — — — — — — — — 120 0.00 120 12.0 0.00 — 421
City Park — — — — — — — — — — — 2.75 0.00 2.75 0.27 0.00 — 9.63 Condo/T
ownhous
e
— — — — — — — — — — — 391 0.00 391 39.1 0.00 — 1,369
Apartme
nts
Low Rise
— — — — — — — — — — — 466 0.00 466 46.6 0.00 — 1,631
35 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Apartme
nts
Mid Rise
— — — — — — — — — — — 394 0.00 394 39.4 0.00 — 1,378
Total — — — — — — — — — — — 2,299 0.00 2,299 230 0.00 — 8,043 Annual — — — — — — — — — — — — — — — — — —
Strip Mall — — — — — — — — — — — 55.5 0.00 55.5 5.55 0.00 — 194 Regional
Shopping
Center
— — — — — — — — — — — 2.31 0.00 2.31 0.23 0.00 — 8.07
Governm
ent
(Civic
Center)
— — — — — — — — — — — 95.2 0.00 95.2 9.52 0.00 — 333
Office
Park
— — — — — — — — — — — 19.9 0.00 19.9 1.99 0.00 — 69.7
City Park — — — — — — — — — — — 0.46 0.00 0.46 0.05 0.00 — 1.59 Condo/T
ownhous
e
— — — — — — — — — — — 64.8 0.00 64.8 6.48 0.00 — 227
Apartme
nts
Low Rise
— — — — — — — — — — — 77.2 0.00 77.2 7.71 0.00 — 270
Apartme
nts
Mid Rise
— — — — — — — — — — — 65.2 0.00 65.2 6.52 0.00 — 228
Total — — — — — — — — — — — 381 0.00 381 38.0 0.00 — 1,332

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 36 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Strip Mall — — — — — — — — — — — — — — — — 3.69 3.69
Regional
Shopping
Center
— — — — — — — — — — — — — — — — 0.12 0.12
Governm
ent
(Civic
Center)
— — — — — — — — — — — — — — — — 0.46 0.46
Office
Park
— — — — — — — — — — — — — — — — 0.58 0.58
City Park — — — — — — — — — — — — — — — — 0.00 0.00
Condo/T
ownhous
e
— — — — — — — — — — — — — — — — 7.46 7.46
Apartme
nts
Low Rise
— — — — — — — — — — — — — — — — 8.88 8.88
Apartme
nts
Mid Rise
— — — — — — — — — — — — — — — — 6.79 6.79
Total — — — — — — — — — — — — — — — — 28.0 28.0
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Strip Mall — — — — — — — — — — — — — — — — 3.69 3.69
Regional
Shopping
Center
— — — — — — — — — — — — — — — — 0.12 0.12
Governm
ent
(Civic
Center)
— — — — — — — — — — — — — — — — 0.46 0.46
37 / 67
38 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Office
Park
— — — — — — — — — — — — — — — — 0.58 0.58
City Park — — — — — — — — — — — — — — — — 0.00 0.00
Condo/T
ownhous
e
— — — — — — — — — — — — — — — — 7.46 7.46
Apartme
nts
Low Rise
— — — — — — — — — — — — — — — — 8.88 8.88
Apartme
nts
Mid Rise
— — — — — — — — — — — — — — — — 6.79 6.79
Total — — — — — — — — — — — — — — — — 28.0 28.0
Annual — — — — — — — — — — — — — — — — — —
Strip Mall — — — — — — — — — — — — — — — — 0.61 0.61
Regional
Shopping
Center
— — — — — — — — — — — — — — — — 0.02 0.02
Governm
ent
(Civic
Center)
— — — — — — — — — — — — — — — — 0.08 0.08
Office
Park
— — — — — — — — — — — — — — — — 0.10 0.10
City Park — — — — — — — — — — — — — — — — 0.00 0.00
Condo/T
ownhous
e
— — — — — — — — — — — — — — — — 1.23 1.23
Apartme
nts
Low Rise
— — — — — — — — — — — — — — — — 1.47 1.47
Apartme
nts
Mid Rise
— — — — — — — — — — — — — — — — 1.12 1.12
Total — — — — — — — — — — — — — — — — 4.63 4.63
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024

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)
— — — — — — — — — — — — — — — — — —
Strip Mall — — — — — — — — — — — — — — — — 3.69 3.69
Regional
Shopping
Center
— — — — — — — — — — — — — — — — 0.12 0.12
Governm
ent
(Civic
Center)
— — — — — — — — — — — — — — — — 0.46 0.46
Office
Park
— — — — — — — — — — — — — — — — 0.58 0.58
City Park — — — — — — — — — — — — — — — — 0.00 0.00
Condo/T
ownhous
e
— — — — — — — — — — — — — — — — 7.46 7.46
Apartme
nts
Low Rise
— — — — — — — — — — — — — — — — 8.88 8.88
Apartme
nts
Mid Rise
— — — — — — — — — — — — — — — — 6.79 6.79
Total — — — — — — — — — — — — — — — — 28.0 28.0
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Strip Mall — — — — — — — — — — — — — — — — 3.69 3.69
39 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Regional
Shopping
Center
— — — — — — — — — — — — — — — — 0.12 0.12
Governm
ent
(Civic
Center)
— — — — — — — — — — — — — — — — 0.46 0.46
Office
Park
— — — — — — — — — — — — — — — — 0.58 0.58
City Park — — — — — — — — — — — — — — — — 0.00 0.00
Condo/T
ownhous
e
— — — — — — — — — — — — — — — — 7.46 7.46
Apartme
nts
Low Rise
— — — — — — — — — — — — — — — — 8.88 8.88
Apartme
nts
Mid Rise
— — — — — — — — — — — — — — — — 6.79 6.79
Total — — — — — — — — — — — — — — — — 28.0 28.0
Annual — — — — — — — — — — — — — — — — — —
Strip Mall — — — — — — — — — — — — — — — — 0.61 0.61
Regional
Shopping
Center
— — — — — — — — — — — — — — — — 0.02 0.02
Governm
ent
(Civic
Center)
— — — — — — — — — — — — — — — — 0.08 0.08
Office
Park
— — — — — — — — — — — — — — — — 0.10 0.10
City Park — — — — — — — — — — — — — — — — 0.00 0.00
Condo/T
ownhous
e
— — — — — — — — — — — — — — — — 1.23 1.23
40 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Apartme
Low Rise
— — — — — — — — — — — — — — — — 1.47 1.47
Apartme
nts
Mid Rise
— — — — — — — — — — — — — — — — 1.12 1.12
Total — — — — — — — — — — — — — — — — 4.63 4.63

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) Equipme
nt
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) Equipme
nt
Type
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e 41 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 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) Equipme
nt
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) 42 / 67
Equipme
nt
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 — — — — — — — — — — — — — — — — — —
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Equipme
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. 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) 43 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024

4.9.2. Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipme
nt
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) 44 / 67
Vegetatio TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e n
Daily, — — — — — — — — — — — — — — — — — —
Summer
(Max)
Total — — — — — — — — — — — — — — — — — —
Daily, — — — — — — — — — — — — — — — — — —
Winter
(Max)
Total — — — — — — — — — — — — — — — — — —
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 — — — — — — — — — — — — — — — — — —
-------------------
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Total — — — — — — — — — — — — — — — — — —

4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual)

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
— — — — — — — — — — — — — — — — —
45 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Subtotal — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —
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) Vegetatio
n
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e 46 / 67
-------------------
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
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 47 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Avoided — — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Sequest
ered
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Remove
d
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Avoided — — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Sequest
ered
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Remove
d
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Avoided — — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Sequest
ered
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
48 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Remove
d
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —

5. Activity Data

5.9. Operational Mobile Sources

5.9.1. Unmitigated
Land Use Type Trips/Weekday Trips/Saturday Trips/Sunday Trips/Year VMT/Weekday VMT/Saturday VMT/Sunday VMT/Year Strip Mall 29,613 29,613 29,613 10,808,709 245,789 245,789 245,789 89,712,877 Regional Shopping
Center
2,955 2,955 2,955 1,078,575 11,061 12,364 12,364 4,173,039 Government (Civic
Center)
2,247 0.00 0.00 585,742 18,648 0.00 0.00 4,861,689
Office Park 4,804 4,804 4,804 1,753,504 39,874 39,874 39,874 14,554,178 City Park 342 342 342 124,798 2,838 2,838 2,838 1,035,834 Condo/Townhouse 7,856 7,856 7,856 2,867,440 58,096 58,096 58,096 21,205,141 Apartments Low
Rise
7,020 7,020 7,020 2,562,300 51,914 51,914 51,914 18,948,586 Apartments Mid Rise 5,187 5,187 5,187 1,893,255 38,359 38,359 38,359 14,000,900

5.9.2. Mitigated
Land Use Type Trips/Weekday Trips/Saturday Trips/Sunday Trips/Year VMT/Weekday VMT/Saturday VMT/Sunday VMT/Year Strip Mall 29,613 29,613 29,613 10,808,709 245,789 245,789 245,789 89,712,877 Regional Shopping
Center
2,955 2,955 2,955 1,078,575 11,061 12,364 12,364 4,173,039 49 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Government (Civic
Center)
2,247 0.00 0.00 585,742 18,648 0.00 0.00 4,861,689
Office Park 4,804 4,804 4,804 1,753,504 39,874 39,874 39,874 14,554,178 City Park 342 342 342 124,798 2,838 2,838 2,838 1,035,834 Condo/Townhouse 7,856 7,856 7,856 2,867,440 58,096 58,096 58,096 21,205,141 Apartments Low
Rise
7,020 7,020 7,020 2,562,300 51,914 51,914 51,914 18,948,586 Apartments Mid Rise 5,187 5,187 5,187 1,893,255 38,359 38,359 38,359 14,000,900

5.10. Operational Area Sources

5.10.1. Hearths

5.10.1.1. Unmitigated
Hearth Type Unmitigated (number)
Condo/Townhouse —
Wood Fireplaces 0
Gas Fireplaces 0
Propane Fireplaces 0
Electric Fireplaces 0
No Fireplaces 982
Conventional Wood Stoves 0
Catalytic Wood Stoves 0
Non-Catalytic Wood Stoves 0
Pellet Wood Stoves 0
Apartments Low Rise —
Wood Fireplaces 0
Gas Fireplaces 0
50 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Propane Fireplaces 0
Electric Fireplaces 0
No Fireplaces 1170
Conventional Wood Stoves 0
Catalytic Wood Stoves 0
Non-Catalytic Wood Stoves 0
Pellet Wood Stoves 0
Apartments Mid Rise —
Wood Fireplaces 0
Gas Fireplaces 0
Propane Fireplaces 0
Electric Fireplaces 0
No Fireplaces 988
Conventional Wood Stoves 0
Catalytic Wood Stoves 0
Non-Catalytic Wood Stoves 0
Pellet Wood Stoves 0

5.10.1.2. Mitigated
Hearth Type Unmitigated (number)
Condo/Townhouse —
Wood Fireplaces 0
Gas Fireplaces 0
Propane Fireplaces 0
Electric Fireplaces 0
No Fireplaces 982
Conventional Wood Stoves 0
51 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Catalytic Wood Stoves 0
Non-Catalytic Wood Stoves 0
Pellet Wood Stoves 0
Apartments Low Rise —
Wood Fireplaces 0
Gas Fireplaces 0
Propane Fireplaces 0
Electric Fireplaces 0
No Fireplaces 1170
Conventional Wood Stoves 0
Catalytic Wood Stoves 0
Non-Catalytic Wood Stoves 0
Pellet Wood Stoves 0
Apartments Mid Rise —
Wood Fireplaces 0
Gas Fireplaces 0
Propane Fireplaces 0
Electric Fireplaces 0
No Fireplaces 988
Conventional Wood Stoves 0
Catalytic Wood Stoves 0
Non-Catalytic Wood Stoves 0
Pellet Wood Stoves 0

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

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) Strip Mall 5,220,493 170 0.0330 0.0040 2,562,947
Regional Shopping Center 217,059 170 0.0330 0.0040 106,563 Government (Civic Center) 3,106,885 170 0.0330 0.0040 5,995,447 Office Park 3,986,114 170 0.0330 0.0040 7,692,123
City Park 0.00 170 0.0330 0.0040 0.00
Condo/Townhouse 4,055,026 170 0.0330 0.0040 20,194,567
Apartments Low Rise 4,087,093 170 0.0330 0.0040 15,871,531 Apartments Mid Rise 3,350,179 170 0.0330 0.0040 6,993,495 53 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024

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) Strip Mall 5,220,493 170 0.0330 0.0040 2,562,947
Regional Shopping Center 217,059 170 0.0330 0.0040 106,563 Government (Civic Center) 3,106,885 170 0.0330 0.0040 5,995,447 Office Park 3,986,114 170 0.0330 0.0040 7,692,123
City Park 0.00 170 0.0330 0.0040 0.00
Condo/Townhouse 4,055,026 170 0.0330 0.0040 20,194,567
Apartments Low Rise 4,087,093 170 0.0330 0.0040 15,871,531 Apartments Mid Rise 3,350,179 170 0.0330 0.0040 6,993,495

5.12. Operational Water and Wastewater Consumption

5.12.1. Unmitigated
Land Use Indoor Water (gal/year) Outdoor Water (gal/year) Strip Mall 43,870,043 885,068
Regional Shopping Center 1,824,036 36,793
Government (Civic Center) 37,193,742 279,785
Office Park 42,692,713 358,959
City Park 0.00 1,971
Condo/Townhouse 34,500,680 1,901,250
Apartments Low Rise 41,105,698 2,265,236
Apartments Mid Rise 34,711,478 1,732,407

5.12.2. Mitigated
54 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Land Use Indoor Water (gal/year) Outdoor Water (gal/year) Strip Mall 43,870,043 885,068
Regional Shopping Center 1,824,036 36,793
Government (Civic Center) 37,193,742 279,785
Office Park 42,692,713 358,959
City Park 0.00 1,971
Condo/Townhouse 34,500,680 1,901,250
Apartments Low Rise 41,105,698 2,265,236
Apartments Mid Rise 34,711,478 1,732,407

5.13. Operational Waste Generation

5.13.1. Unmitigated
Land Use Waste (ton/year) Cogeneration (kWh/year)
Strip Mall 622 —
Regional Shopping Center 25.9 —
Government (Civic Center) 1,067 —
Office Park 223 —
City Park 5.10 —
Condo/Townhouse 726 —
Apartments Low Rise 865 —
Apartments Mid Rise 731 —

5.13.2. Mitigated
Land Use Waste (ton/year) Cogeneration (kWh/year)
Strip Mall 622 —
Regional Shopping Center 25.9 —
55 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Government (Civic Center) 1,067 —
Office Park 223 —
City Park 5.10 —
Condo/Townhouse 726 —
Apartments Low Rise 865 —
Apartments Mid Rise 731 —

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 Strip Mall Other commercial A/C
and heat pumps
R-410A 2,088 < 0.005 4.00 4.00 18.0
Strip Mall Stand-alone retail
refrigerators and
freezers
R-134a 1,430 0.04 1.00 0.00 1.00
Strip Mall Walk-in refrigerators
and freezers
R-404A 3,922 < 0.005 7.50 7.50 20.0
Regional Shopping
Center
Other commercial A/C
and heat pumps
R-410A 2,088 < 0.005 4.00 4.00 18.0
Regional Shopping
Center
Stand-alone retail
refrigerators and
freezers
R-134a 1,430 0.04 1.00 0.00 1.00
Government (Civic
Center)
Household refrigerators
and/or freezers
R-134a 1,430 0.02 0.60 0.00 1.00
Government (Civic
Center)
Other commercial A/C
and heat pumps
R-410A 2,088 < 0.005 4.00 4.00 18.0
Office Park Household refrigerators
and/or freezers
R-134a 1,430 0.02 0.60 0.00 1.00
Office Park Other commercial A/C
and heat pumps
R-410A 2,088 < 0.005 4.00 4.00 18.0
56 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 City Park Other commercial A/C
and heat pumps
R-410A 2,088 < 0.005 4.00 4.00 18.0
City Park Stand-alone retail
refrigerators and
freezers
R-134a 1,430 0.04 1.00 0.00 1.00
Condo/Townhouse Average room A/C &
Other residential A/C
and heat pumps
R-410A 2,088 < 0.005 2.50 2.50 10.0
Condo/Townhouse Household refrigerators
and/or freezers
R-134a 1,430 0.12 0.60 0.00 1.00
Apartments Low Rise Average room A/C &
Other residential A/C
and heat pumps
R-410A 2,088 < 0.005 2.50 2.50 10.0
Apartments Low Rise Household refrigerators
and/or freezers
R-134a 1,430 0.12 0.60 0.00 1.00
Apartments Mid Rise Average room A/C &
Other residential A/C
and heat pumps
R-410A 2,088 < 0.005 2.50 2.50 10.0
Apartments Mid Rise Household refrigerators
and/or freezers
R-134a 1,430 0.12 0.60 0.00 1.00

5.14.2. Mitigated
Land Use Type Equipment Type Refrigerant GWP Quantity (kg) Operations Leak Rate Service Leak Rate Times Serviced Strip Mall Other commercial A/C
and heat pumps
R-410A 2,088 < 0.005 4.00 4.00 18.0
Strip Mall Stand-alone retail
refrigerators and
freezers
R-134a 1,430 0.04 1.00 0.00 1.00
Strip Mall Walk-in refrigerators
and freezers
R-404A 3,922 < 0.005 7.50 7.50 20.0
Regional Shopping
Center
Other commercial A/C
and heat pumps
R-410A 2,088 < 0.005 4.00 4.00 18.0
57 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Regional Shopping
Center
Stand-alone retail
refrigerators and
freezers
R-134a 1,430 0.04 1.00 0.00 1.00
Government (Civic
Center)
Household refrigerators
and/or freezers
R-134a 1,430 0.02 0.60 0.00 1.00
Government (Civic
Center)
Other commercial A/C
and heat pumps
R-410A 2,088 < 0.005 4.00 4.00 18.0
Office Park Household refrigerators
and/or freezers
R-134a 1,430 0.02 0.60 0.00 1.00
Office Park Other commercial A/C
and heat pumps
R-410A 2,088 < 0.005 4.00 4.00 18.0
City Park Other commercial A/C
and heat pumps
R-410A 2,088 < 0.005 4.00 4.00 18.0
City Park Stand-alone retail
refrigerators and
freezers
R-134a 1,430 0.04 1.00 0.00 1.00
Condo/Townhouse Average room A/C &
Other residential A/C
and heat pumps
R-410A 2,088 < 0.005 2.50 2.50 10.0
Condo/Townhouse Household refrigerators
and/or freezers
R-134a 1,430 0.12 0.60 0.00 1.00
Apartments Low Rise Average room A/C &
Other residential A/C
and heat pumps
R-410A 2,088 < 0.005 2.50 2.50 10.0
Apartments Low Rise Household refrigerators
and/or freezers
R-134a 1,430 0.12 0.60 0.00 1.00
Apartments Mid Rise Average room A/C &
Other residential A/C
and heat pumps
R-410A 2,088 < 0.005 2.50 2.50 10.0
Apartments Mid Rise Household refrigerators
and/or freezers
R-134a 1,430 0.12 0.60 0.00 1.00

5.15. Operational Off-Road Equipment
58 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024

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

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
59 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 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)

6. Climate Risk Detailed Report

Climate Hazard Result for Project Location Unit
Temperature and Extreme Heat 12.4 annual days of extreme heat Extreme Precipitation 3.90 annual days with precipitation above 20 mm Sea Level Rise — meters of inundation depth
60 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Wildfire 7.98 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.

6.3. Adjusted Climate Risk Scores
Climate Hazard Exposure Score Sensitivity Score Adaptive Capacity Score Vulnerability Score Temperature and Extreme Heat N/A N/A N/A N/A
61 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 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 N/A N/A N/A N/A
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 64.7
AQ-PM 45.1
AQ-DPM 25.7
Drinking Water 10.9
Lead Risk Housing 17.5
Pesticides 0.00
Toxic Releases 25.6
Traffic 48.6
62 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Effect Indicators —
CleanUp Sites 37.8
Groundwater 40.8
Haz Waste Facilities/Generators 84.7
Impaired Water Bodies 77.3
Solid Waste 9.67
Sensitive Population —
Asthma 35.6
Cardio-vascular 30.2
Low Birth Weights 18.6
Socioeconomic Factor Indicators —
Education 43.4
Housing 19.8
Linguistic 10.4
Poverty 16.6
Unemployment 28.2

Indicator Result for Project Census Tract
Economic —
Above Poverty 66.11061209
Employed 1.296034903
Median HI 58.75785962
Education —
Bachelor's or higher 47.36301809
High school enrollment 17.87501604
63 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Preschool enrollment 14.26921596
Transportation —
Auto Access 76.73553189
Active commuting 33.56858719
Social —
2-parent households 27.65302194
Voting 75.72180162
Neighborhood —
Alcohol availability 42.80764789
Park access 24.26536635
Retail density 59.4636212
Supermarket access 60.82381625
Tree canopy 8.135506224
Housing —
Homeownership 43.19260875
Housing habitability 69.11330681
Low-inc homeowner severe housing cost burden 75.55498524 Low-inc renter severe housing cost burden 83.49801104
Uncrowded housing 47.26036186
Health Outcomes —
Insured adults 74.51559091
Arthritis 0.0
Asthma ER Admissions 59.9
High Blood Pressure 0.0
Cancer (excluding skin) 0.0
Asthma 0.0
Coronary Heart Disease 0.0
64 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Chronic Obstructive Pulmonary Disease 0.0
Diagnosed Diabetes 0.0
Life Expectancy at Birth 1.7
Cognitively Disabled 36.6
Physically Disabled 78.7
Heart Attack ER Admissions 49.6
Mental Health Not Good 0.0
Chronic Kidney Disease 0.0
Obesity 0.0
Pedestrian Injuries 19.6
Physical Health Not Good 0.0
Stroke 0.0
Health Risk Behaviors —
Binge Drinking 0.0
Current Smoker 0.0
No Leisure Time for Physical Activity 0.0
Climate Change Exposures —
Wildfire Risk 0.0
SLR Inundation Area 0.0
Children 48.8
Elderly 83.1
English Speaking 76.6
Foreign-born 6.0
Outdoor Workers 58.3
Climate Change Adaptive Capacity —
Impervious Surface Cover 55.9
Traffic Density 49.3
65 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Traffic Access 51.5
Other Indices —
Hardship 31.7
Other Decision Support —
2016 Voting 76.0

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
Screen Justification
Land Use Land Uses and acreages based on Town Center Specific Plan Buildout Summary (9-7-2023 Draft).

Operations: Vehicle Data Trip generation rates provided by Intersecting Metrics 66 / 67
Santee TCSP Program 2035 Operations Detailed Report, 3/1/2024 Operations: Hearths No hearths
67 / 67
Appendix C
Biological Technical Report
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Santee Town Center Specific
Plan Update
DRAFT Biological Technical Report
August 2024 | 01427.00004.001
Prepared for:

M.W. Steele Group
1805 Newton Avenue, Suite A
San Diego, CA 92113
Prepared by:

HELIX Environmental Planning, Inc.
7578 El Cajon Boulevard
La Mesa, CA 91942
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TABLE OF CONTENTS
Section Page

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

1.1 Project Location .................................................................................................................. 1

1.2 Project Description ............................................................................................................. 2

2.0 METHODS......................................................................................................................................... 4

2.1 Literature Review................................................................................................................ 4

2.2 Biological Surveys ............................................................................................................... 5

2.2.1 General Biological Survey ...................................................................................... 5

2.2.2 Jurisdictional Delineation....................................................................................... 5

2.3 Survey Limitations............................................................................................................... 5

2.4 Nomenclature ..................................................................................................................... 6

3.0 EXISTING CONDITIONS..................................................................................................................... 6

3.1 General Land Uses .............................................................................................................. 6

3.2 Topography and Soils.......................................................................................................... 6

3.3 Vegetation Communities .................................................................................................... 6

3.3.1 Wetlands................................................................................................................ 7

3.3.2 Uplands .................................................................................................................. 9

3.4 Plants ................................................................................................................................ 11

3.5 Animals ............................................................................................................................. 11

3.6 Sensitive Resources........................................................................................................... 11

3.6.1 Sensitive Vegetation Communities/Habitats....................................................... 11

3.6.2 Special-status Plant Species................................................................................. 12

3.6.3 Special-status Animal Species.............................................................................. 13

3.6.4 Jurisdictional Waters and Wetlands .................................................................... 16

3.6.5 Wildlife Corridor/Core Wildlife Areas.................................................................. 18

4.0 REGULATORY FRAMEWORK........................................................................................................... 19

4.1 Federal .............................................................................................................................. 19

4.1.1 Federal Endangered Species Act.......................................................................... 19

4.1.2 Migratory Bird Treaty Act .................................................................................... 20

4.1.3 Clean Water Act and Rivers and Harbors Act ...................................................... 20

4.2 State.................................................................................................................................. 20

4.2.1 California Environmental Quality Act .................................................................. 20

4.2.2 California Endangered Species Act ...................................................................... 20

4.2.3 Native Plant Protection Act ................................................................................. 21

4.2.4 California Fish and Game Code............................................................................ 21

4.2.5 Porter-Cologne Water Quality Control Act.......................................................... 21

4.2.6 Natural Communities Conservation Planning Act ............................................... 21

4.3 County of San Diego.......................................................................................................... 22

4.3.1 Multiple Species Conservation Program.............................................................. 22 i

TABLE OF CONTENTS (cont.)
Section Page

4.4 Local .................................................................................................................................. 22

4.4.1 Santee General Plan............................................................................................. 22

4.4.2 City of Santee Draft MSCP Subarea Plan ............................................................. 23

4.4.3 Santee Municipal Code ........................................................................................ 23

5.0 SIGNIFICANCE OF PROJECT IMPACTS AND PROPOSED MITIGATION ............................................ 24

5.1 Criteria for Determining Impact Significance.................................................................... 24

5.2 Issue 1: Special-Status Species.......................................................................................... 24

5.2.1 Impacts to Vegetation Communities ................................................................... 25

5.2.2 Impacts to Special-status Species........................................................................ 26

5.2.3 Mitigation Measures............................................................................................ 30

5.2.4 Conclusions .......................................................................................................... 36

5.3 Issue 2: Riparian Habitat and Sensitive Natural Communities ......................................... 36

5.3.1 Impact Analysis .................................................................................................... 36

5.3.2 Mitigation Measures............................................................................................ 39

5.3.3 Conclusion............................................................................................................ 40

5.4 Issue 3: Jurisdictional Wetlands and Waterways.............................................................. 40

5.4.1 Impact Analysis .................................................................................................... 40

5.4.2 Mitigation Measures............................................................................................ 40

5.4.3 Conclusion............................................................................................................ 41

5.5 Issue 4: Wildlife Movement and Nursery Sites................................................................. 41

5.5.1 Impact Analysis .................................................................................................... 41

5.5.2 Mitigation Measures............................................................................................ 41

5.5.3 Conclusion............................................................................................................ 41

5.6 Issue 5: Local Policies and Ordinances.............................................................................. 41

5.6.1 Impact Analysis .................................................................................................... 42

5.6.2 Mitigation Measures............................................................................................ 42

5.6.3 Conclusion............................................................................................................ 42

5.7 Issue 6: Adopted Conservation Plans ............................................................................... 42

5.7.1 Impact Analysis .................................................................................................... 42

5.7.2 Mitigation Measures............................................................................................ 43

5.7.3 Conclusion............................................................................................................ 43

6.0 FEDERAL CONSISTENCY ANALYSIS FOR BIOLOGICAL RESOURCES ISSUES ..................................... 43

6.1 Issue 1: Federal Endangered Species Act, Section 7......................................................... 43

6.1.1 Mitigation Measures............................................................................................ 44

6.1.2 Conclusion............................................................................................................ 44

6.2 Issue 2: Magnuson-Stevens Fishery Conservation And Management Act, Essential Fish Habitat ....................................................................................................................... 44

6.2.1 Mitigation Measures............................................................................................ 45

6.2.2 Conclusion............................................................................................................ 45 ii

TABLE OF CONTENTS (cont.)
Section Page

6.3 Issue 3: Coastal Zone Management Act............................................................................ 45

6.3.1 Mitigation Measures............................................................................................ 45

6.3.2 Conclusion............................................................................................................ 45

6.4 Issue 4: Migratory Bird Treaty Act .................................................................................... 45

6.5 Issue 5: Protection Of Wetlands ....................................................................................... 45

6.6 Issue 6: Wild and Scenic River Act .................................................................................... 46

7.0 REFERENCES................................................................................................................................... 47

LIST OF APPENDICES
A Plant Species Observed
B Animal Species Observed or Detected
C Special-Status Plant Species Potential to Occur
D Special-Status Animal Species Potential to Occur
E Explanation of Status Codes for Plant and Animal Species

LIST OF FIGURES
No. Title Follows Page
1 Regional Location............................................................................................................................. 2 2 USGS Topography ............................................................................................................................ 2 3 Aerial Vicinity ................................................................................................................................... 2 4 Regional Designations and Conserved Lands .................................................................................. 2 5 Soils .................................................................................................................................................. 6 6 Vegetation and Sensitive Resources................................................................................................ 8 7 Vegetation and Sensitive Resources/Impacts................................................................................ 26

LIST OF TABLES
No. Title Page
1 Biological Survey for the Project...................................................................................................... 5 2 Existing Vegetation Communities/Land Use Types within the Project Area ................................... 7 3 Aquatic Resources within the Jurisdictional Delineation Review Area .........................................17 4 Vegetation Community/Land Use Types Impacts and Mitigation Requirements .........................25 5 Impacts to Jurisdictional Waters....................................................................................................38 iii
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iv

ACRONYMS AND ABBREVIATIONS
AEN Arts & Entertainment Neighborhood
ALUCP Airport Land Use Compatibility Plan
AMSL above mean sea level
BMPs best management practices
BRCA Biological Resource Core Area
BTR Biological Technical Report
CDFW California Department of Fish and Wildlife
CEQA California Environmental Quality Act
CESA California Endangered Species Act
CFG Code California Fish and Game Code
City City of Santee
CNDDB California Natural Diversity Database
CNPS California Native Plant Society
County County of San Diego
CRPR California Rare Plant Rank
CWA Clean Water Act
EIR Environmental Impact Report
FC federally listed candidate
FE federally listed endangered
FESA Federal Endangered Species Act
ft feet
FT federally listed threatened
GIS Geographic Information System
GPS Global Positioning System
HAP Housing Acceleration Program
HCP Habitat Conservation Plan
HE Housing Element
HELIX HELIX Environmental Planning, Inc.

HLP Habitat Loss Permit
lf. linear feet
MBTA Migratory Bird Treaty Act
MSCP Multiple Species Conservation Program
NCCP Natural Communities Conservation Planning
NPPA Native Plant Protection Act
NRCS Natural Resource Conservation Service
v
project Town Center Specific Plan Update
RWQCB Regional Water Quality Control Board
SAA Streambed Alteration Agreement
SANDAG San Diego Association of Governments
SanGIS San Diego Geographic Information Source
SDG&E San Diego Gas & Electric
SDMMP San Diego Management and Monitoring Program
SR State Route
SSC Species of Special Concern
SWPPP Storm Water Pollution Prevention Plan
TCSP Town Center Specific Plan Update
USACE U.S. Army Corps of Engineers
USDA U.S. Department of Agriculture
USFWS U.S. Fish and Wildlife Service
USGS U.S. Geological Survey
WEAP Worker Environmental Awareness Program
WL Watch List
vi

DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024

1.0 INTRODUCTION
At the request of the M.W. Steele Company, HELIX Environmental Planning, Inc. (HELIX) completed this Biological Technical Report (BTR) for the Town Center Specific Plan Update (project), which is proposed in the City of Santee (City), San Diego County (County), California. The project proposes a technical update to the Santee Town Center Specific Plan Amendment Final Master Environmental Impact Report ([EIR]; City 2006), an amendment to the Arts & Entertainment Neighborhood (AEN), and a project-level environmental analysis of four sites within the Town Center Specific Plan (TCSP) boundary.

The purpose of this report is to document the existing biological resources identified as present or potentially present within the project area; identify potential biological resource impacts resulting from the proposed project; and recommend measures to avoid, minimize, and/or mitigate significant impacts consistent with federal, state, and local rules and regulations, including the California Environmental Quality Act (CEQA). This report provides the biological resources documentation necessary for review under CEQA by the City and other responsible agencies for the project.

Figures and other supporting information are provided as enclosures attached to this report.

1.1 PROJECT LOCATION
The project area is located in the City of Santee, in the eastern portion of the County of San Diego, north of State Route (SR) 52 and west of SR 67 (Figure 1, Regional Location). The project area is situated within Section 27 of Township 15 South, Range 1 West on the U.S. Geological Survey (USGS) 7.5-minute El Cajon quadrangle topographic map (Figure 2, USGS Topography). The project area is situated on 1,068 Assessor Parcel Numbers in the central portion of the City, bounded by Mission Gorge Road to the south, Mast Boulevard to the north, Red River Trail Place to the west, and North Magnolia Avenue to the east (Figure 3, Aerial Photograph). The topography of the project area is bisected by the San Diego River.

The San Diego River flows through the eastern boundary of the project area and continues in an eastward direction where it exits the project area and continues in a mostly westward direction. The San Diego River originates within the Santa Ysabel Open Space Preserve East, 28 miles east of the project area, flowing west and southwest, and ultimately reaches the Pacific Ocean 16 miles west of the project area. An unnamed tributary to the San Diego River flows through the northern boundary of the project area and continues generally in a southward direction until it meets the San Diego River. The unnamed tributary occurs as a previously re-channelized and restored natural bottom drainage and is a major conveyance of stormwater for the existing development north of the San Diego River.

Within the Final Multiple Species Conservation Program Plan (MSCP), the project area occurs within the City of Santee MSCP Subarea Plan subregion (County 1998). The Mission Trails/Kearny Mesa/East Elliot/Santee Biological Resource Core Area (BRCA), as identified in the Final MSCP Plan, surrounds the northern and western portions of the City and overlaps a small portion of the western project area (Figure 4, Regional Designations and Conserved Lands).

The project area occurs approximately 17 miles inland from the coast, is located outside the Coastal Overlay Zone, and is not within any lands identified as critical habitat by the U.S. Fish and Wildlife Service (USFWS). The surrounding area contains USFWS-designated critical habitat for Hermes copper butterfly (Lycaena hermes), least Bell’s vireo (Vireo bellii pusillus), and coastal California gnatcatcher (Polioptila californica californica). Critical habitat for coastal California gnatcatcher is located 0.3 mile 1 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 northeast of the project area. Hermes copper butterfly critical habitat occurs approximately 0.4 mile northwest of the project area. Critical habitat for least Bell’s vireo is located approximately 0.4 mile west of the project area. The project area occurs outside the USFWS Recommended Survey Area for Quino checkerspot butterfly and inside the Hermes copper butterfly exempt from take area. Conserved lands managed by the City occur along the San Diego River and at the intersection of Riverwalk Drive and Park Center Drive. Conserved lands managed by the San Diego Habitat Conservancy occur north of residential development along Town Center Parkway (Figure 4).

1.2 PROJECT DESCRIPTION
The proposed project consists of a comprehensive update to the TCSP to modify or establish new land use designations, land uses, development standards, and conceptual guidelines that would apply to future development within the TCSP area. As part of this effort, the City would also make modifications to the AEN and provide objective design standards and conceptual designs for strategic Housing Element sites within the TCSP.

Town Center Specific Plan
Amendments to the TCSP would incorporate relevant updates to the plan’s vision, land use permissions, and development standards. As part of the updates, new text and graphics would be developed and organized into a series of chapters, such as: Introduction, Land Use and Urban Form, Mobility and Beautification, Infrastructure and Public Facilities, Implementation, and Administration. Text and concepts that remain relevant to the vision and goals of the TCSP would be maintained and incorporated into the updated TCSP document format and structure.

The amended TCSP would incorporate updated allowable and permitted land uses and development standards tailored to the project area. The updated TCSP would include graphics that illustrate the planned land use concepts and the plan’s vision at key sites. As part of the TCSP, the circulation network exhibits of the plan would be updated, including the bicycle, pedestrian, and transit network maps and the street cross sections. The TCSP would include concepts for key improvements in the public right-ofway to enhance circulation within the project area. The TCSP would incorporate concepts to illustrate wayfinding and branding signage at important locations within the public right-of-way and public trails, such as signs tailored for pedestrians, bicyclists, and transit users, and signs designed to direct vehicular traffic and refer to parking areas, as well as iconic gateway structures that enhance the identity and sense of place in the project area.

Finally, the TCSP amendment would also incorporate an adjustment to the Specific Plan boundaries to include additional sites, such as the shopping center located at the northwest corner of Mission Gorge Road and Cuyamaca Road and the shopping center located west of Cuyamaca Road, between Mission 2 Santee Town Center Specific Plan Amendment
I r ~ . ..-•.......~ VaiJLa~e
Pacific
Ocean
oh/ford~ ,
f,.

I
~I
~
(
.i
Loveland Resent.air
I
HELIX . Regional Location
Environmental Planning
Figure 1
Santee Town Center Specific Plan Amendment ' , .
-:-,-.,.. ....o,
.:_~ -1 ,v<o..--- o~lfl>T -iTJl,.-,:fr~~
J'~:il°~ ~:m : lrol -~ •
r- ...,...-
\-" I~ I~ ~- ~- . O 2,000 Feet
E---3 E---3 I
HELIX USGS Topography Environmental Planning
Figure 2
Santee Town Center Specific Plan Amendment ' .•
1 Source: Aerial (SanGIS, 2023) 1,500 Feet
:::E---3==:::::===:::::E---3==:::::===i 'f
HELIX Aerial Photograph Environmental Planning
Figure 3
0 Santee Town Center Specific Plan Amendment
C> Proposed Santee Town Center
Specific Plan
Mission Trails/Kearny Mesa/East
Elliott/Santee BRCA
Critical Habitat
Least Bell's Vireo
Coastal California Gnatcatcher
Hermes Copper Butterfly
Santee MSCP Subarea Plan • Draft
~ Currently Protected Open Space ·
~ Not Fully Managed
Town Center Specific Plan Update Land Use
Floodway/Open Space
Park/Open Space
Source: Aerial Pnoto {SanGIS 2023); Conserved Lands (SAN DAG Tecnnical Services • GIS 2018); Critical Habitat (U.S. Fisn and Wildlife Service 2022) 1,500 Feet i ::::E---3======:::::E---3======1 'f
HELIX Regional Designations and Conserved Lands
Environmental Planning
Figure 4
0 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 Creek Drive and River Park Drive. As a result of the boundary adjustment, the TCSP area would expand from 609.70 to 651.42 acres1, increasing by a total of 41.72 acres.

Arts & Entertainment Neighborhood
The TCSP would include an amendment to the AEN. As discussed above, the City adopted the AEN in 2019 with the intent of encouraging the development of an Arts & Entertainment district within a significant portion of the TCSP. The update would incorporate the vision, guidelines, and development standards specific to the AEN as a subsection of the Land Use and Urban Form chapter of the TCSP. This section of the TCSP would also incorporate tailored land use designations that support uses related to art and culture, entertainment, commercial recreation, visitor, and civic uses.

Additionally, the update would incorporate an adjustment to the AEN boundaries to include additional sites such as the open space designated areas along the San Diego River, areas north of the San Diego River, south of Riverwalk Drive, west of River Park Drive, east of Cuyamaca Street, and west of Magnolia Avenue. As a result of the boundary adjustments, the AEN area would expand from 172.492 to 341.72 acres, increasing by a total of 169.23 acres.

The AEN incorporates the Trolley Square shopping center, Town Center Park East, Sportsplex USA, Rio Seco School, and the four Housing Element sites 16A, 16B, 20A, and 20B. In addition to the four Housing Element sites, the AEN includes civic uses, a San Diego River Bridge, and an entertainment commercial site referred to as the Town Center Core. The San Diego River Bridge would connect areas north and south of the San Diego River, beginning at the southern edge of Town Center Park East and ending just north of Housing Element Site 16A. The San Diego River Bridge would support passive and active recreation and provide multi-modal connections within the TCSP area. Also, access to major recreational facilities such as the Town Center Community Park, the Sportsplex, and the YMCA and Aquatics Center, located north of the San Diego River, would be accessible to residents south of the San Diego River.

Lookouts across the bridge would create opportunities for art installations, interpretive signage, and seating.

Four Strategic Housing Element Sites (2021-2029 Sixth Cycle) The City Council adopted the Housing Element (2021-2029 Sixth Cycle) on May 11, 2022. The Housing Element (HE) was prepared in compliance with State housing law as determined by the California Department of Housing and Community Development on December 6, 2022. The HE included a Sites Inventory map and table (figure C-1 and table C-1 of the HE), which included a series of sites that are 1 The original Town Center Specific Plan published in 1986 cited the TCSP area as 706 acres, however amendments to the plan have reduced the Specific Plan total acreage. Additionally, the original acreage was based on an estimate, due to improved geographic information software over time, the number of reported acres in the TCSP has changed as the accuracy of the data has increased. 2 The 2019 Art and Entertainment Overlay District refers to 155 acres; however, current GIS data shows 172 acres for the same area.
3 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 currently undeveloped or underutilized. The identified sites provide an opportunity for the City to meet its Regional Housing Needs Allocation housing production goals. Four strategic undeveloped housing sites identified in the Sites Inventory are located within the boundary of the TCSP and the AEOD. The sites are identified as 16A, 16B, 20A, and 20B. Sites 16A and 16B are undeveloped sites located just north of Mission Gorge Road and east of Riverview Parkway in the Santee Town Center. The area surrounding the sites is primarily developed, with Santee Trolley Square immediately west of the site, the Las Colinas Detention Facility to the east, and open space associated with the San Diego River to the north. A portion of Site 16A is located within the Airport Safety Zone 4 as designated in the Gillespie Field Airport Land Use Compatibility Plan (ALUCP). Sites 20A and 20B are undeveloped sites located just west of Magnolia Avenue, south of Riverview Parkway, and east of Edgemoor Drive. Sites 20A and 20B surround the Historic Edgemoor Polo or Dairy Barn. To the west of Site 20A is the Las Colinas Detention Facility, and to the east is a gated 55+ manufactured home community. Site 20B is bordered by singlefamily residential homes to the south, multifamily residential to the east, and Las Colinas and Riverview Office Park to the west. A portion of the site is located within the Gillespie Field ALUCP Airport Safety Zone 4. The sites are proposed to be developed for residential uses.

The HE Implementation Program identified specific sites that would need to be rezoned to allow for residential uses, and/or to allow for the estimated housing capacity included in the HE. The HE proposed zoning changes for sites 16A, 16B, 20A, and 20B. As part of the realization of the Housing Element Implementation Program, the City analyzed and approved the re-zone of the four above-mentioned sites and adopted the rezoning on October 26, 2022.

To further advance the housing production in Santee, City staff applied for a Housing Acceleration Program (HAP) grant from the San Diego Association of Governments (SANDAG). The grant application was awarded to the City. The HAP grant provides funding for project-level analysis of HE sites 16A, 16B, 20A, and 20B. The amended TCSP will include graphics and data that illustrate site planning and development concepts for each of these sites based on the maximum allowable density allowed by zoning. The EIR will analyze these sites at a project level of detail.

2.0 METHODS

2.1 LITERATURE REVIEW
HELIX conducted a thorough review of maps, federal and state databases, and literature pertaining to biological resources known to occur within the vicinity of the project area before conducting field surveys for the project. HELIX also reviewed recent and historical aerial imagery (Google Earth, historicalaerials.com), USGS topographic maps, soils maps (U.S. Department of Agriculture [USDA] 2023), and other relevant maps of the project area and the immediate surrounding vicinity. Queries for special-status species and sensitive biological resources databases were also conducted, including, but not limited to: the California Department of Fish and Wildlife (CDFW) California Natural Diversity Database (CNDDB; CDFW 2023a-c), USFWS species records (USFWS 2023), USFWS Information for Planning and Consultation system (USFWS 2023); San Diego Management and Monitoring Program (SDMMP 2023), and the California Native Plant Society (CNPS) Inventory of Rare and Endangered Plants (CNPS 2023). Additionally, HELIX reviewed the Cottonwood and Park Project Biological Technical Report (Dudek 2024), the Riverview Parkway Project USACE Aquatic Resources Delineation Report (REC Consultants, Inc. 2022a), the Riverview Parkway CDFW Jurisdictional Delineation Report (REC 4 Survey Date Personnel Conditions
July 25, 2023 Benjamin Rosenbaum 79-96 °F; wind 0-5 mph; 5-15% clouds Jonathan Mercado

DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 Consultants, Inc. 2022b), and the Restoration/Revegetation Plan for the Riverview Parkway Project (REC Consultants, Inc. 2023).

2.2 BIOLOGICAL SURVEYS

2.2.1 General Biological Survey
HELIX biologists Benjamin Rosenbaum and Jonathan Mercado conducted a general biological survey of the project area on July 25, 2023, to map existing vegetation communities, document the locations of special-status species, identify and map potential jurisdictional resources (i.e., wetlands, waters, and riparian vegetation), and evaluate the potential for other sensitive biological resources and specialstatus species to occur within the project area and immediate vicinity (Table 1, Biological Survey for the Project). The survey was conducted on foot with the aid of binoculars. Detected biological resources were mapped directly in the field on a 1"=200' scale aerial photograph with an overlay of the project area. Animal identifications were made in the field by direct, visual observation, or indirectly by detection of calls, burrows, tracks, or scat. Plant identifications were made in the field or in the lab through comparison with voucher specimens or photographs. Plant and animal species observed or otherwise detected during the survey were recorded (Appendix A, Plant Species Observed, and Appendix B, Animal Species Observed or Detected). The survey incorporated a 100-foot buffer surrounding the project area for the understanding of adjacency context only, which is referred to in this report as the project study area; however, for purposes of this report, the project area is the primary focus of the report analysis and discussion. Areas beyond and outside of the project area are discussed as applicable.

Table 1

BIOLOGICAL SURVEY FOR THE PROJECT

2.2.2 Jurisdictional Delineation
The project area was examined by HELIX biologists for evidence of potential jurisdictional waters and wetlands during the general biological survey. Potential jurisdictional waters and wetlands would be regulated under the jurisdiction of the U.S. Army Corps of Engineers (USACE), Regional Water Quality Control Board (RWQCB), or CDFW.

A jurisdictional delineation review area was established within a portion of the AEN and was examined for evidence of potential jurisdictional waters and wetlands in 2021 (REC Consultants, Inc. 2022a-b).

2.3 SURVEY LIMITATIONS
Not all plant species would have bloomed during the survey period, and it is possible that detection of some special-status plant species may not have been possible due to the timing of the focused plant surveys and variable seasonal conditions (e.g., rainfall and temperatures) that influence growth and flowering. Noted animal species were identified by direct observation, vocalizations, or the observance of scat, tracks, or other signs. However, the lists of species identified are not necessarily comprehensive 5 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 accounts of all species that utilize the study area, as species that are nocturnal, secretive, or seasonally restricted may not have been observed or detected. Those species that are of special status and have the potential to occur within the project are addressed in Appendix C, Special-Status Plant Species Potential to Occur, and Appendix D, Special Status Wildlife Species Potential to Occur. An explanation of status codes for plant and animal species is included in Appendix E, Explanation of Status Codes for Plant and Animal Species.

2.4 NOMENCLATURE
Nomenclature used in this report generally comes from Holland (1986), Oberbauer et al. (2008), Jepson eFlora (2023), and Baldwin et al. (2012) for plants; Society for the Study of Amphibians and Reptiles (2023) for reptiles and amphibians, American Ornithological Society (2023) for birds; and Bradley et al. (2014) for mammals. Plant species status is from the CNPS’ Rare Plant Inventory (CNPS 2023) and CDFW (2023a). Animal species status is from the CDFW (2023b). Soils information was taken from the Natural Resources Conservation Service (NRCS; USDA 2023).

3.0 EXISTING CONDITIONS

3.1 GENERAL LAND USES
The southern and northern portions of the project area are developed lands associated with commercial office buildings, residential development, and recreational activities (parks and baseball fields). The center of the project area is bisected by the San Diego River. The San Diego River flows through the eastern boundary of the project area, continuing in an eastward direction until it exits the project area, and then continues in a mostly westward direction. An unnamed tributary to the San Diego River flows through the northern boundary of the project area and continues generally in a southward direction until it meets the San Diego River.

3.2 TOPOGRAPHY AND SOILS
Elevations within the project area vary from 320 feet above mean sea level (amsl) along the San Diego River where it flows through the center of the project area to 380 feet amsl in the northern portion of the project area. There is little topographic variety within much of the study area aside from the lower in elevation San Diego River, which flows through the center of the site in an east-west direction.

A total of nine soil mapping units in nine soil series are shown within the project area (Figure 5, Soils):

Grangeville fine sandy loam, 0 to 2 percent slopes (GoA); Placentia sandy loam, thick surface, 2 to 9 percent slopes (PfC); Ramona sandy loam, 9 to 15 percent (RaD2); Redding gravelly loam, 2 to 9 percent slopes (RdC); Riverwash (Rm); Salinas clay 0 to 2 percent slopes (ScA); Tujunga sand, 0 to 5 percent slopes (TuB); Visalia sandy loam, 0 to 2 percent slopes (VaA); and Water (W). Grangeville fine sandy loam and Riverwash make up the largest areas of soil map units in the project area and coincide with the location of the San Diego River and developed areas to the south of the San Diego River.

3.3 VEGETATION COMMUNITIES
A total of 18 vegetation communities or land use types occur within the project area: southern riparian forest, southern arroyo willow riparian forest, southern riparian scrub (including disturbed and 6 ___ ____
Santee Town Center Specific Plan Amendment
C::, Proposed Santee Town Center Specific Plan
Soils
0 CnG2 - Cieneba-Fallbrook rocky sandy loams, 30 to 65 percents lopes, eroded C Dae · Diablo clay, 2 to 9 percent slopes
C.., DoE - Diablo-Olivenhain complex, 9 to 30 percent slopes C FaB - Fallbrook sandy loam, 2 to 5 percent slopes
GoA - Grangeville fine sandy loam, 0 to 2 percent slopes GrC - Greenfield sandy loam, 5 to 9 percent slopes
LsE,linne clay loam, 9 to 30 percent slopes
PfC - Placentia sandy loam, thick surface, 2 to 9 percent slopes RaB - Ramona sandy loam, 2 to 5 percent slopes
Rae - Ramona sandy loam, 5 to 9 percent slopes
RaD2,Ramona sandy loam, 9 to 15 percent slopes, eroded
RdC - Redding gravelly loam, 2 to 9 percent slopes
~ RhC - Redding-Urban land complex, 2 to 9 percent slopes C) RhE - Redding-Urban land complex, 9 to 30 percent slopes C Rm - Riverwash
CJ SbA - Salinas clay loam, Oto 2 percent slopes
C ScA - Salinas clay, Oto 2 percent slopes
C) SvE - Stony land
TuB - Tujunga sand, Oto 5 percent slopes
-=:::, VaA • Visalia sandy loam, Oto 2 percent slopes
VaD - Visalia sandy loam, 9 to 15 percent slopes
VsE - Vista coarse sandy loam, 15 to 30 percent slopes
VsG - Vista coarse sandy loam, 30 to 65 percent slopes
W-Water
O 800 Feet _E---3 E---3 1
HELIX Soils
Environmental Planning
Figure 5

DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 restored), southern willow scrub, tamarisk scrub, arrowweed scrub, open water, Diegan coastal sage scrub (including disturbed), Diegan coastal sage scrub: Baccharis-dominated (including disturbed), nonnative grassland, eucalyptus woodland, artificial detention basin, disturbed habitat, and developed lands (Table 2, Existing Vegetation Communities/Land Use Types Within the Project Area; Figure 6, Vegetation and Sensitive Resources).

Table 2
EXISTING VEGETATION COMMUNITIES/LAND USE TYPES WITHIN THE PROJECT AREA1,2 Vegetation Community
Santee
Town
Center SPA
Arts &
Entertainment
Neighborhood
Property
16A
Property
16B
Property
20A
Property
20B
Wetland Habitats
Southern Riparian Forest (61300) 0.42 -- -- -- -- --
Southern Arroyo Willow Riparian Forest (61320) 85.31 43.19 -- -- -- -- Southern Riparian Scrub (63300) 0.84 -- -- -- -- --
Southern Riparian Scrub – Disturbed (63300) 0.68 -- -- -- -- -- Southern Riparian Scrub – Restoration (63300) 0.89 0.14 -- -- -- -- Southern Willow Scrub (63320) 0.96 0.96 0.19 -- -- --
Tamarisk Scrub (63810) 3.98 3.98 -- -- -- --
Arrowweed Scrub (63820) 2.06 0.10 -- -- -- --
Open Water (64100) 11.06 8.68 -- -- -- --
Subtotal 106.20 57.05 0.19 -- -- --
Upland Habitats
Diegan Coastal Sage Scrub (32500) 0.3 -- -- -- -- --
Diegan Coastal Sage Scrub, Disturbed (32500) 15.7 15.7 -- -- -- -- Diegan Coastal Sage Scrub: Baccharis-dominated
(32530)

6.6 6.6 -- -- -- --
Diegan Coastal Sage Scrub: Baccharis-dominated,
Disturbed (32530)

0.9 0.9 -- -- -- --
Non-native Grassland (42200) 5.1 0.9 -- -- -- --
Eucalyptus Woodland (79100) 1.7 1.3 -- -- -- --
Artificial Detention Basin (N/A) 2.0 2.0 1.3 -- -- --
Disturbed Habitat (11300) 128.4 98.2 9.5 8.5 5.9 7.9
Developed (12000)
384.6 155.2 <0.1
(0.02)

0.1 1.8 2.0
Subtotal 545.3 280.8 10.8 8.6 7.7 9.9
TOTAL 651.50 337.85 10.99 8.6 7.7 9.9 1 Vegetation categories and numerical codes are from Holland (1986) and Oberbauer (2008) 2 Upland habitats are rounded to the nearest 0.1 acre, while wetland habitats are rounded to the nearest 0.01; thus, total reflects rounding.

3.3.1 Wetlands

3.3.1.1 Southern Riparian Forest (Holland Code 61300)
Southern riparian woodlands and forests are composed of winter-deciduous trees that require water near the soil surface. Willow (Salix spp.), cottonwood (Populus spp.), and western sycamore (Platanus racemosa) form a dense, medium-height woodland or forest in moist canyons and drainage bottoms.

Associated understory species include mule fat (Baccharis salicifolia), stinging nettle (Urtica dioica ssp. holosericea), and wild grape (Vitis girdiana; Beauchamp 1986). 7 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 There is 0.42 acre of southern riparian forest mapped within the project area. Southern riparian forest is found in the northern portion of the project area along an unnamed tributary to the San Diego River (Figure 6).

3.3.1.2 Southern Arroyo Willow Riparian Forest (Holland Code 61320) Southern arroyo willow riparian forest is an open to dense riparian community that is dominated by arroyo willow (Salix lasiolepis). Arroyo willow requires moist, bare mineral soil for germination and establishment. This community occurs along large stream courses where there is an abundant supply of water at or near the surface for most of the year. Though southern arroyo willow riparian woodland may not differ in floristic composition from some riparian scrub communities, it does so in physiognomy.

The absence of large, frequent disturbances, usually in the form of floods, allows the component tree species to attain a sizable height.

There are 85.31 acres of southern arroyo willow riparian forest mapped within the project area.

Southern arroyo willow riparian forest is found along the San Diego River and an unnamed tributary to the San Diego River (Figure 6).

3.3.1.3 Southern Riparian Scrub – including disturbed and restoration (Holland Code 63300)
Southern riparian scrub is a generic term for several shrub dominated communities that occur along drainages and/or riparian corridors, including southern willow scrub, mule fat scrub, and tamarisk scrub.

Disturbed southern riparian scrub contains many of the same shrub species as undisturbed southern riparian scrub but is sparser and has a higher proportion of non-native perennial and annual species.

Southern riparian scrub - restoration contains many of the same shrub species as naturally occurring southern riparian scrub but is less mature, artificially irrigated, and maintained.

There are 0.84 acre of southern riparian scrub, 0.68 acre of disturbed southern riparian scrub, and 0.89 acre of southern riparian scrub restoration within the project area. Southern riparian scrub (including disturbed and restoration) is found along the fringes of the San Diego River and within an unnamed tributary to the San Diego River (Figure 6).

3.3.1.4 Southern Willow Scrub (Holland Code 63320)
Southern willow scrub consists of dense, broad-leaved, winter-deciduous stands of trees dominated by shrubby willows in association with mule fat, and with scattered emergent cottonwood and western sycamores. This vegetation community occurs on loose, sandy, or fine gravelly alluvium deposited near stream channels during flood flows. Frequent flooding maintains this early seral community, preventing succession to a riparian woodland or forest (Holland 1986). In the absence of periodic flooding, this early seral type would be succeeded by southern cottonwood or western sycamore riparian forest.

There is 0.96 acre of southern willow scrub mapped within the project area. Southern willow scrub is found within an unnamed drainage east of Riverview Parkway (Figure 6).

3.3.1.5 Tamarisk Scrub (Holland Code 63810)
Tamarisk scrub is typically composed of shrubs and/or small trees of exotic tamarisk species (Tamarix spp.) but may also contain willows, salt bushes (Atriplex spp.), catclaw acacia (Acacia greggii), and salt 8 ~ Proposed Santee Town Center Specific Plan
(Q) Study Area
Q Proposed Arts & Entertainment District Overlay
C Property 16A
Property 168
Property 20A
Property 208
Special Status Plant Species
0 San Diego Marsh Elder (Iva hayesiana)
Southwestern Spiny Rush (Juncus acutus ssp. □ leopoldii) Smooth Tarplant (Centromadia pungens ssp. laevis)
Smooth Tarplant (Centromadia pungens ssp. laevis)
Rabbit Tobacco (Pseudognaphalium /eucocepha/um)
Holland/Oberbauer Classification
Riparian Forests and Woodlands
(61300) Southern Riparian Forest
(61320) Southern Arroyo Willow Riparian Forest
Riparian Shrub/ands
(63300) Southern Riparian Scrub - Disturbed
(63300) Southern Riparian Scrub - Restoration
(63320) Southern Willow Scrub
(63810) Tamarisk Scrub
., (63820) Arrowweed Scrub
"
~
8 Upland Forestes and Woodlands
j - (79100) Eucalyptus Woodland
I
..,, Soft-leaved, Drought-Deciduous Shrub/ands
~ (32500) Diegan Coastal Sage Scrub i
~
-
(32500) Diegan Coastal Sage Scrub - Disturbed
:t (32530) Diegan Coastal Sage Scrub
- 8accharis [ - dominated
::;;
(32530) Diegan Coastal Sage Scrub - 8accharis
g:
~
.:: dominated
-Disturbed ~ i' Upland Herbaceous Vegetation
~ (11300) Disturbed Habitat
" " l3 (42200) Non
-native Grassland
~
~ Unvegetated .!,
~ (12000) Developed :;:'
::;; (64100) Open Water i g
a ""
:i:
~I
Source: Aerial Photo (SanGIS 2023) 0 750 Feet
E---3 E---3 I
HELIX Vegetation and Sensitive Resources
Environmental Planning
Figure 6

DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 grass (Distichlis spicata). This habitat occurs along intermittent streams in areas where high evaporation rates increase the salinity level of the soil. Tamarisk is a phreatophyte, a plant that can obtain water from an underground water table. Because of its deep root system and high transpiration rates, tamarisk can substantially lower the water table to below the root zone of native species, thereby competitively excluding them. As a prolific seeder, it may rapidly displace native species within a drainage (Holland 1986).

There are 3.98 acres of tamarisk scrub mapped within the project area. Tamarisk scrub is found as patches intermixed within disturbed habitat south of the San Diego River (Figure 6).

3.3.1.6 Arrowweed Scrub (Holland Code 63820)
Arrowweed scrub occurs as moderate to dense streamside thickets strongly dominated by arrowweed (Pluchea sericea) and may also include cattails (Typha spp.), southwestern spiny rush (Juncus acutus ssp. leopoldii), and salt grass, especially around the margins of the thickets.

There are 2.06 acres of arrowweed scrub mapped within the project area. Arrowweed scrub is found as a single patch located north of the San Diego River (Figure 6).

3.3.1.7 Open Water (Holland Code 64100)
Open water is an unvegetated habitat. It is made up of year-round bodies of saline or fresh water. Fresh water bodies include lakes, streams, ponds, or rivers.

There are 11.06 acres of open water mapped within the project area. Open water occurs along the San Diego River (Figure 6).

3.3.2 Uplands

3.3.2.1 Diegan Coastal Sage Scrub - including disturbed (Holland Code 32500) Diegan coastal sage scrub is one of the two major shrub types that occur in southern California, occupying xeric sites characterized by shallow soils (the other is chaparral). Diegan coastal sage scrub may be dominated by a variety of species depending on soil type, slope, and aspect. Typical species found within Diegan coastal sage scrub include California sagebrush (Artemisia californica), California buckwheat (Eriogonum fasciculatum), laurel sumac (Malosma laurina), lemonadeberry (Rhus integrifolia), white sage (Salvia apiana), and black sage (Salvia mellifera). Disturbed Diegan coastal sage scrub contains many of the same shrub species as undisturbed Diegan coastal sage scrub but is sparser and has a higher proportion of non-native perennial and annual species.

There is 0.3 acre of Diegan coastal sage scrub mapped within the project area. There are 15.7 acres of disturbed Diegan coastal sage scrub mapped within the project area. Diegan coastal sage scrub (including disturbed) is found both north and south of the San Diego River as remnant patches within disturbed habitat (Figure 6).
9 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024

3.3.2.2 Diegan Coastal Sage Scrub: Baccharis Dominated – including disturbed (Holland Code 32530)
Within Diegan coastal sage scrub: baccharis dominated, coyote brush (Baccharis pilularis) is the dominant species in the shrub canopy. Associated species include California sagebrush, California buckwheat, and goldenbush. The herbaceous layer contains codominant species, which includes bromes (Bromus spp.), barleys (Hordeum spp.), Bermuda grass (Cynodon dactylon), giant wild rye (Elymus condensatus), purple needlegrass (Stipa pulchra), and deergrass (Muhlenbergia rigens). Diegan coastal sage scrub: baccharis dominated is usually open and often occurs on floodplains as a transition between riparian and upland habitat types. Disturbed Diegan coastal sage scrub: baccharis dominated contains many of the same shrub species as undisturbed Diegan coastal sage scrub: baccharis dominated but is sparser and has a higher proportion of non-native perennial and annual species.

There are 6.6 acres of Diegan coastal sage scrub: baccharis dominated mapped within the project area.

There is 0.9 acre of disturbed Diegan coastal sage scrub: baccharis dominated mapped within the project area. Diegan coastal sage scrub: baccharis dominated (including disturbed) is found both north and south of the San Diego River as remnant patches within disturbed habitat (Figure 6).

3.3.2.3 Non-Native Grassland (Holland Code 42200)
Non-native grassland may be composed of dense to sparse cover of annual grasses. It is 0.2 to one meter tall. In years of high rainfall, it can be associated with native wildflowers. In San Diego County, associated species include oats (Avena spp.), bromes, filaree (Erodium spp.), mustards (Brassica spp.), tocalote (Centaurea melitensis), California poppy (Eschscholzia californica), lupines (Lupinus spp.), and plantain (Plantago spp.), among others. In some areas, depending on rainfall, forbs can be dominant.

Germination often occurs with the onset of fall rains and continues through the spring. Grass species are often dead in the summer and fall. It is usually found on fine-textured to clay soils.

There are 5.1 acres of non-native grassland mapped within the project area. Non-native grassland occurs as an isolated patch north of Mission Gorge Road, west of Town Center Parkway, and as an isolated patch south of the San Diego River (Figure 6).

3.3.2.4 Eucalyptus Woodland (Holland Code 79100)
Eucalyptus woodland is dominated by eucalyptus (Eucalyptus spp.), an introduced tree that has often been planted purposely for wind-blocking, ornamental, and hardwood production purposes. Most groves are monotypic, with the most common species being either the blue gum (Eucalyptus gunnii) or red gum (E. camaldulensis ssp. obtusa). The understory within well-established groves is usually very sparse due to the closed canopy and allelopathic nature of the abundant leaf and bark litter.

There are 1.7 acres of eucalyptus woodland mapped within the project area. Eucalyptus woodland occurs as isolated patches north and south of the San Diego River (Figure 6).

3.3.2.5 Artificial Detention Basin (Holland Code N/A)
Artificial detention basins on-site consist of open water habitat excavated in uplands. These detention basins are considered an artificially-created community because they act as holding basins for storm water as a result of human activities in historically non-wetland areas. 10 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 A total of three artificial detention basins totaling 2.0 acres are present in the project area (Figure 6).

3.3.2.6 Disturbed Habitat (11300)
Disturbed habitat includes those areas that have been disturbed and are no longer considered native habitat but still have a soil substrate. Vegetation is usually made up of invasive non-native species and ornamentals, and in particular, those species that take advantage of disturbed areas. Commonly associated species include thistles (Sonchus spp.), Russian thistle (Salsola tragus), mustards, pampas grass (Cortaderia selloana), and fountain grass (Pennisetum setaceum). The habitat no longer provides animal species with many beneficial uses other than for dispersal. Examples of areas that are considered disturbed habitat include graded pads, areas actively managed for fuels, dirt parking lots, firebreaks, offroad vehicle trails, and home sites.

There are 128.4 acres of disturbed habitat mapped within the project area. Disturbed habitat occurs on undeveloped lands north and south of the San Diego River (Figure 6).

3.3.2.7 Developed Land (Holland Code 12000)
Developed areas are those that have been built on or physically altered to the extent that native vegetation is not supported. Developed land is often characterized by permanent or semi-permanent structures, pavement, hardscape, or landscaped areas that require irrigation. Areas where no natural land is evident due to large quantities of debris or other material being placed upon it are also considered developed. Usually, plants in these areas are invasive non-native plants or ornamental.

There are 384.6 acres of developed land mapped within the project area. Developed land occurs throughout the project area (Figure 6).

3.4 PLANTS
A total of 56 plant species were observed in the project area during the biological survey, of which 19 (34 percent) are non-native species (Appendix A).

3.5 ANIMALS
A total of 14 animal species were observed or otherwise detected in the project area during the biological survey, including four species of insects, two reptiles, six birds, and two mammals (Appendix B).

3.6 SENSITIVE RESOURCES

3.6.1 Sensitive Vegetation Communities/Habitats
Sensitive vegetation communities/habitat types are defined as land that supports unique vegetation communities or the habitats of rare or endangered species or subspecies of animals or plants as defined by Section 15380 of the State CEQA Guidelines. Sensitive vegetation communities/habitat types mapped on the project area include open water, southern arroyo willow riparian forest, southern riparian forest, southern riparian scrub (including restoration and disturbed), southern willow scrub, tamarisk scrub, arrowweed scrub, Diegan coastal sage scrub (including baccharis dominated and disturbed), and non11

DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 native grassland. Disturbed habitat, eucalyptus woodland, detention basin (artificial), and developed lands do not meet the definition of sensitive habitat under CEQA. Impacts to these vegetation communities do not require mitigation.

3.6.2 Special-status Plant Species
Special-status plant species have been afforded special status and/or recognition by the USFWS and CDFW, and may also be included in the CNPS Inventory of Rare and Endangered Plants. Their status is often based on one or more of three distributional attributes: geographic range, habitat specificity, and/or population size. A species that exhibits a small or restricted geographic range (such as those endemic to the region) is geographically rare. A species may be more or less abundant but occurs only in very specific habitats. Lastly, a species may be widespread but exists naturally in small populations.

3.6.2.1 Special-status Plant Species Observed
Three special-status plant species were observed within the project area during the general biological survey and surveys conducted for the Cottonwood and Park project (Dudek 2024).

Smooth tarplant (Centromadia pungens ssp. laevis)
Listing: --/--; California Rare Plant Rank (CRPR) 1B.1
Distribution: San Diego, Orange, Riverside, Los Angeles, Kern, and San Bernardino counties below approximately 1,500 feet in elevation.

Habitat: Valley and foothill grasslands, particularly near alkaline locales.

Status on site: HELIX observed 243 individuals within the TCSP in areas of disturbed habitat and Diegan coastal sage scrub: baccharis-dominated habitat south of the San Diego River (Figure 6). All individuals occur within the AEN, and approximately 100 of these individuals occur within Property 16A.

San Diego marsh-elder (Iva hayesiana)
Listing: --/--; CRPR 2.2
Distribution: San Diego County and Baja California, Mexico.

Habitat: Creeks of intermittent streambeds are preferred habitat for this low-growing, conspicuous shrub. Typically, the riparian canopy is open, allowing substantial sunlight to reach this marsh-elder.

Sandy alluvial embankments with cobbles are frequently utilized.

Status on site: HELIX observed two individuals within southern riparian forest habitat along an unnamed tributary to the San Diego River (Figure 6). These individuals occur within the TCSP but outside the AEN and Properties 16A, 16B, 20A, and 20B.

Southwestern spiny rush (Juncus acutus ssp. leopoldii)
Listing: --/--; CRPR 4.2
Distribution: Los Angeles, San Bernardino, San Luis Obispo, Ventura, and San Diego counties; Baja California, Mexico.

Habitat: Moist, saline, or alkaline soils in coastal salt marshes and riparian marshes.

Status on site: HELIX observed three individuals. One individual occurs within the TCSP on conserved land designated as Park/Open Space along an unnamed tributary to the San Diego River. A second individual occurs within the TCSP outside conserved lands at the southern terminus of Park Center Drive.

Additionally, a third individual occurs within the TCSP and AEN outside conserved lands at the southern terminus of Park Center Drive. These individuals do not occur on Properties 16A, 16B, 20A, and 20B (Figure 6).
12 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 White rabbit-tobacco (Pseudognaphalium leucocephalum)
Listing: --/--; CRPR 2B.2
Distribution: San Diego, Orange, Riverside, San Bernardino, Los Angeles, Ventura, Santa Barbara, Kern, Inyo, Mono, Monterey, and Plumas counties; Arizona; New Mexico; and Mexico.

Habitat: Sandy or gravelly soils of benches, dry stream bottoms, and canyon bottoms within coastal scrub, chaparral, cismontane woodland, and riparian woodland.

Status on site: Surveys for the Park and Cottonwood project observed 15 individuals within southern willow scrub and disturbed habitat along the northern edge of the San Diego River. A total of six individuals occur within the TCSP outside conserved lands. A total of nine individuals occur within the TCSP and AEN on conserved lands designated as Floodway/Open Space (Figure 6; Dudek 2024).

3.6.2.2 Sensitive Plant Species with Potential to Occur The potential for special-status plant species to occur within the project area was evaluated based on the elevation, soils, vegetation communities, and level of disturbance, as well as species status, previous occurrences, and distribution in the vicinity of the study area. No special-status plant species were determined to have a high potential to occur within the project area.

Additional special-status plant species that were not observed but were evaluated for the potential to occur within the project area are listed in Appendix C. An explanation of status codes is included as Appendix E.

3.6.3 Special-status Animal Species
Special-status animal species include those that have been afforded special status and/or recognition by the USFWS and/or CDFW. In general, the principal reason an individual taxon (species or subspecies) is given such recognition is the documented or perceived decline or limitations of its population size or geographical extent and/or distribution, resulting in most cases from habitat loss.

3.6.3.1 Special-status Animal Species Observed
Special-status animal species were not observed or detected in the project area during the general biological survey.

3.6.3.2 Sensitive Animal Species with Potential to Occur Special-status animal species that were not observed or otherwise detected but were evaluated for the potential to occur on-site are included in Appendix D. An explanation of status codes is included as Appendix E.

A total of 17 special-status animal species were determined to have high potential to occur in the project area: San Diegan legless lizard (Anniella stebbinsi), California glossy snake (Arizona elegans occidentalis), Belding’s orange-throated whiptail (Aspidoscelis hyperythra beldingi), San Diegan tiger whiptail (Aspidoscelis tigris stejnegeri), red diamond rattlesnake (Crotalus ruber), Blainville’s horned lizard (Phrynosoma blainvillii), western spadefoot toad (Spea hammondii), two-striped garter snake (Thamnophis hammondii), Cooper’s hawk (Accipiter cooperii), coastal California gnatcatcher (Polioptila californica californica), and least Bell’s vireo (Vireo bellii pusillus). The remaining species analyzed were determined to have either a moderate or low potential to occur or are not expected to occur due to existing site disturbances, site vegetation maintenance, and lack of suitable habitat conditions. 13 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 San Diegan legless lizard (Anniella stebbinsi)
Status: --/Species of Special Concern (SSC)
Distribution: Widespread resident species in San Diego County.

Habitat(s): Occurs in moist warm, loose soil with plant cover. May be found in coastal sand dunes, chaparral, pine-oak woodlands, desert scrub, sandy washes, and stream terraces with sycamores, cottonwoods, or oaks.

Status on site: Areas of loose soils with plant cover along the San Diego River are considered high potential to support San Diegan legless lizard. However, the project area has been heavily degraded by surrounding development.

California glossy snake (Arizona elegans occidentalis)
Status: --/SSC
Distribution: Occurs along the coastal regions of California from San Francisco south to San Diego County, though it is absent along the central coast.

Habitat(s): Occurs in arid scrub, rocky washes, grasslands, and chaparral. Prefers open areas and loose soil.

Status on site: Rocky washes along the San Diego River are considered high potential to support California glossy snake. However, the project area has been heavily degraded by surrounding development.

Belding’s orange-throated whiptail (Aspidoscelis hyperythra beldingi) Status: --/WL
Distribution: Southern Orange County and southern San Bernardino County, and south through Baja California.

Habitat(s): Coastal sage scrub, chaparral, edges of riparian woodlands, and washes. Also found in weedy, disturbed areas adjacent to these habitats. Important habitat requirements include open, sunny areas, shaded areas, and abundant insect prey base, particularly termites (Reticulitermes sp.).

Status on site: Suitable habitat (Diegan coastal sage scrub) occurs within the project area and is considered to have high potential to support Belding’s orange-throated whiptail. There are documented occurrences, including historical observations, within the vicinity.

San Diegan tiger whiptail (Aspidoscelis tigris stejnegeri) Status: --/SSC
Distribution: Ventura County south, in cismontane California, to south-central Baja California.

Habitat(s): Open coastal sage scrub, chaparral, and woodlands. Frequently found along the edges of dirt roads traversing its habitats. Important habitat components include open, sunny areas, shrub cover with accumulated leaf litter, and an abundance of insects, spiders, or scorpions.

Status on site: Suitable habitat (Diegan coastal sage scrub) occurs within the project area and is considered to have high potential to support San Diegan tiger whiptail. There are documented occurrences, including historical observations, within the vicinity.

Red diamond rattlesnake (Crotalus ruber)
Status: --/SSC
Distribution: Extreme southeastern Los Angeles County (Diamond Bar) into southern San Bernardino County, and south into southern Baja California, Mexico.

Habitat(s): Found in chaparral, coastal sage scrub, along creek banks, particularly among rock outcrops or piles of debris with a supply of burrowing rodents for prey. 14 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 Status on site: Suitable habitat (Diegan coastal sage scrub) occurs within the project area and is considered to have high potential to support red diamond rattlesnake. There are documented occurrences, including historical observations, within the vicinity.

Blainville’s horned lizard (Phrynosoma blainvillii)
Status: --/SSC
Distribution: Northern California through coastal southern California into northern Baja California.

Habitat(s): Coastal sage scrub and open areas in chaparral, oak woodlands, and coniferous forests with sufficient basking sites, adequate scrub cover, and areas of loose soil; require native ants, especially harvester ants (Pogonomyrmex sp.), and are generally excluded from areas invaded by Argentine ants (Linepithema humile).

Status on site: Suitable habitat (Diegan coastal sage scrub) occurs within the project area and is considered to have high potential to support Blainville’s horned lizard. There are documented occurrences, including historical observations, within the vicinity.

Western spadefoot toad (Spea hammondii)
Status: --/SSC
Distribution: Throughout the Central Valley and San Francisco Bay area, south along the coast to northwestern Baja California
Habitat(s): Occurs in open coastal sage scrub, chaparral, and grassland, along sandy or gravelly washes, floodplains, alluvial fans, or playas; require temporary pools for breeding and friable soils for burrowing; generally excluded from areas with bullfrogs (Rana catesbiana) or crayfish (Procambarus sp).

Status on site: Suitable habitat occurs within the project area along the San Diego River and along an unnamed drainage that is tributary to the San Diego River and these areas are considered high potential to support western spadefoot toad. There are documented occurrences in the vicinity of the project area. However, the project area has been heavily degraded and disturbed by surrounding development.

Two-striped garter snake (Thamnophis hammondii)
Status: --/SSC
Distribution: Monterey County south through the coastal ranges into northwestern Baja California Habitat(s): Occurs along permanent and intermittent streams bordered by dense riparian vegetation, but occasionally associated with vernal pools or stock ponds.

Status on site: Potentially suitable riparian habitats occur within the project area along the San Diego River and along an unnamed drainage that is tributary to the San Diego River, but the site lacks rocky streambed habitat typically associated with the species. There are documented occurrences, including historical observations, in the project area and within the vicinity.

Cooper’s hawk (Accipiter cooperii)
Status: --/SSC
Distribution: Occurs year-round throughout San Diego County’s coastal slope where stands of trees are present.

Habitat(s): Oak groves, mature riparian woodlands, and eucalyptus stands or other mature forests.

Status on site: Suitable mature riparian woodland occurs within the project area along the San Diego River and is considered to have high potential to support Cooper’s hawk. There are documented occurrences in the vicinity of the project area.
15 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 Coastal California gnatcatcher (Polioptila californica californica) Status: FT/SSC
Distribution: Widespread resident species in San Diego County Habitat(s): Diegan coastal sage scrub areas, typically dominated by California sagebrush, California buckwheat, and prickly-pear cactus.

Status on site: This species has been documented in multiple locations in sage scrub habitat along the San Diego River as recently as 2016 (USFWS 2023). Though the species has high potential to occur in the project area, suitable habitat present is limited to small remnant patches of coastal sage scrub within disturbed undeveloped land and does not connect to larger blocks of coastal sage scrub off-site. The species may utilize these areas on-site for foraging opportunities but would most likely breed off-site in more extensive, higher quality habitat.

Least Bell’s vireo (Vireo bellii pusillus)
Status: FE/SE
Distribution: Observed throughout much of San Diego County in the breeding season but in smaller numbers in foothills and mountains
Habitat(s): Mature riparian woodland.

Status on site: Suitable habitat for this species occurs along the San Diego River and along an unnamed drainage that is tributary to the San Diego River. This species has been documented in multiple locations along the San Diego River, where it runs through the project area, as recently as 2008 (USFWS 2023) Nesting Birds
Trees and shrubs both within and adjacent to the project area could provide suitable nesting habitat for numerous bird species known to the region.

Raptor Foraging
Raptor species were not observed in the project area during the biological survey. Raptor species that have shown the ability to adapt to urban and suburban environments may use the area for foraging and could use on-site trees for nesting. These include red-shouldered hawk (Buteo lineatus) and Cooper’s hawk (Accipiter cooperii; State Watch List). Suitable foraging habitat for these species are fallow fields or open lands greater than five acres that are characterized by fossorial activity and/or the presence of trees. Raptors typically utilize tall trees for nesting and perching. Although present, the area of potential foraging habitat for raptors is limited within the project area. The habitat within the project area does not provide high-quality raptor habitat, as many on-site trees with potential for nesting are located adjacent to roadways with heavy traffic. Additionally, potential foraging habitat (fallow fields/open lands with fossorial activity) is limited within the project area, and nearby disturbance such as roads, freeways, and proximity to human activity are also a deterrent for foraging raptors.

3.6.4 Jurisdictional Waters and Wetlands
In the context of this assessment, jurisdictional waters and wetlands include waters of the U.S., including wetlands regulated by the USACE pursuant to the Clean Water Act (CWA) Section 404; waters of the State regulated by the RWQCB pursuant to Section 401 of the CWA and State Porter-Cologne Water Quality Control Act; and streambed and riparian habitat regulated by the CDFW pursuant to Sections 1600 et seq. of the California Fish and Game Code (CFG Code). 16 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 Potential jurisdictional aquatic resources present within the study area consist of waters of the U.S. subject to the regulatory jurisdiction of USACE, waters of the State subject to the regulatory jurisdiction of the RWQCB, and streambed and riparian habitat subject to the regulatory jurisdiction of the CDFW.

These potential jurisdictional resources are primarily associated with the San Diego River, unnamed drainages, and riparian-associated vegetation occurring along the river and drainages.

The jurisdictional delineation review area consisted of the proposed Riverview Parkway project site and encompassed the entire parcel (381-050-82-00; REC Consultants, Inc. 2022a-b). Within the Riverview Parkway project site, a total of 0.33 acre (2,117 linear feet) of waters of the U.S. may be subject to USACE and RWQCB regulatory jurisdiction pursuant to Sections 404 and 401 of the CWA. Additionally,

1.13 acres of streambed and riparian resources occur within the jurisdictional delineation review area and would be subject to CDFW jurisdiction pursuant to Sections 1600–1616 of the CFG Code.

USACE Jurisdiction
USACE-jurisdictional waters within the jurisdictional delineation review area include wetland and nonwetland waters of the U.S. (Table 3, Aquatic Resources within the Jurisdictional Delineation Review Area). A total of 0.33 acre / 2,117 linear feet (lf) of potential waters of the U.S. were delineated in the jurisdictional delineation review area. Potential waters of the U.S. consist of 0.05 acre of wetland and

0.28 acre of non-wetland waters.

RWQCB Jurisdiction
RWQCB-jurisdictional waters within the jurisdictional delineation review area include wetland and nonwetland waters of the State (Table 3). A total of 0.33 acre / 2,117 (lf) of potential waters of the State were delineated in the jurisdictional delineation review area. Potential waters of the State consist of

0.05 acre of wetland and 0.28 acre of non-wetland waters. No isolated waters or isolated wetlands meeting the SWRCB’s State Wetland Definition were identified in the jurisdictional delineation review area. Thus, no waters or wetlands subject to RWQCB regulation solely under the Porter-Cologne Water Quality Control Act were observed on-site.

CDFW Jurisdiction
CDFW habitat was delineated within the jurisdictional delineation review area (Table 3). A total of 1.18 acres of CDFW jurisdictional habitat occur within the jurisdictional delineation review area, composed of

0.54 acre of riparian habitat (including vegetated streambed) and 0.64 acre of unvegetated streambed.

Table 3

AQUATIC RESOURCES WITHIN THE JURISDICTIONAL DELINEATION REVIEW AREA TYPE Acres1 (Linear Feet)
USACE Waters of the U.S.

Wetland Waters (WW-1) 0.04 (210)
Wetland Waters (WW-2) 0.01 (68)
Non-wetland Waters (NWW-1) 0.19 (1,360)
Non-wetland Waters (NWW-2) 0.08 (366)
Non-wetland Waters (NWW-3) 0.01 (92)
Non-wetland Waters (NWW-4) <0.01 (0.001; 21)
Waters of the U.S. Total 0.33 (2,117)
17 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 TYPE Acres1 (Linear Feet)
RWQCB Waters of the State
Wetland Waters (WW-1) 0.04 (210)
Wetland Waters (WW-2) 0.01 (68)
Non-wetland Waters (NWW-1) 0.19 (1,360)
Non-wetland Waters (NWW-2) 0.08 (366)
Non-wetland Waters (NWW-3) 0.01 (92)
Non-wetland Waters (NWW-4) <0.01 (0.001; 21)
Waters of the State Total 0.33 (2,117)
CDFW Jurisdictional Areas
Riparian (including vegetated streambed) 0.54
Streambed 0.64
CDFW TOTAL 1.18 1 Acreages are rounded to nearest 0.01 acre. Linear feet is rounded to the nearest foot.

3.6.5 Wildlife Corridor/Core Wildlife Areas
Wildlife corridors connect otherwise isolated pieces of habitat and allow movement or dispersal of plants and animals. Local wildlife corridors allow access to resources such as food, water, and shelter within the framework of their daily routine. Regional corridors provide these functions over a larger scale and link two or more large habitat areas, allowing the dispersal of organisms and the consequent mixing of genes between populations. A corridor is a specific route that is used for the movement and migration of species and may be different from a linkage in that it represents a smaller or narrower avenue for movement. A linkage is an area of land that supports or contributes to the long-term movement of animals and genetic exchange by providing live-in habitat that connects to other habitat areas. Many linkages occur as stepping-stone linkages that are made up of a fragmented archipelago arrangement of habitat over a linear distance.

With respect to wildlife movement in the region, conservation targets generally include conserving core blocks of coastal sage scrub and chaparral habitat, as well as maintaining linkages between critical biological resource areas. The Mission Trails/Kearny Mesa/East Elliot/Santee BRCA, as identified in the Final MSCP Plan, surrounds the northern and western portions of the City and overlaps a small portion of the project area. This BRCA is generally associated with Mission Trails Regional Park to the west and habitat along the San Diego River. Undeveloped habitat in the project area functions as both "live-in" habitat for a wide variety of large and small wildlife, and functions as partial territory for the largest of mammals (i.e., mule deer, bobcat, and coyote). The project area also acts as a movement corridor (e.g., San Diego River) between County open space, MCAS Miramar, and Santee Lakes. The San Diego River is expected to be a key component for the movement of wildlife in the region, namely birds and mammals.

The San Diego River supports a permanent water source and provides cover for a wide range of species known to the region. Large mammals, such as southern mule deer (Odocoileus hemionus fuliginata) and coyote (Canis latrans), would be expected to travel to and from the San Diego River and expansive habitat blocks associated with Mission Trails Regional Park. Large mammals would also be expected to travel along the San Diego River and riparian corridor. Birds would be expected to move unobstructed between key habitat blocks of coastal sage scrub and riparian habitat that provides important breeding, foraging, and dispersal functions. Key blocks of coastal sage scrub where gnatcatchers are known to occur include Mission Trails Regional Park, with additional habitat extending further north within Sycamore Canyon Preserve, and to the southeast into Crestwood Ecological Reserve. 18 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 A variety of land uses surround the project area and include mixed uses that place residential use within walking distance of commercial and recreational uses (Figure 3). The San Diego River runs through the project area, and most of the on-site reach of the river is characterized by dense southern arroyo willow riparian forest habitat. East-west wildlife movement in the region would likely follow the San Diego River. The upland vegetation communities/land use types present outside and along the San Diego River corridor provide minimal cover for wildlife movement and, as evaluated on their own, do not function as a wildlife movement corridor. However, the upland undeveloped lands in the project area are contiguous with the San Diego River, which does function as a wildlife corridor.

4.0 REGULATORY FRAMEWORK
Biological resources in the project area are subject to regulatory review by federal, state, and local agencies. Under CEQA, impacts associated with a proposed project or program are assessed with regard to significance criteria determined by the CEQA Lead Agency (in this case, the City) pursuant to CEQA Guidelines. Biological resource-related laws and regulations that apply include the federal Endangered Species Act (FESA), Migratory Bird Treaty Act (MBTA), CWA, CEQA, California Endangered Species Act (CESA), Native Plant Protection Act (NPPA), CFG Code, Porter-Cologne Water Quality Control Act, Natural Communities Conservation Planning (NCCP) Act, MSCP, Santee General Plan, City of Santee Draft MSCP Subarea Plan (currently being prepared), Habitat Loss Permit Ordinance, and Santee Municipal Code.

4.1 FEDERAL

4.1.1 Federal Endangered Species Act
Administered by the USFWS, the FESA provides the legal framework for the listing and protection of species (and their habitats) that are identified as being endangered or threatened with extinction.

Actions that jeopardize endangered or threatened species and the habitats upon which they rely are considered a “take” under the FESA. Section 9(a) of the ESA defines take as “to harass, harm, pursue, hunt, shoot, wound, kill, trap, capture, or collect, or attempt to engage in any such conduct.” “Harm” and “harass” are further defined in federal regulations and case law to include actions that adversely impair or disrupt a listed species’ behavioral patterns.

The USFWS designates critical habitat for endangered and threatened species. Critical habitat is a term defined and used in the FESA and refers to specific geographic areas that contain features considered necessary for endangered or threatened species to recover. Critical habitat designations can include areas that are not currently occupied by the species, as the ultimate goal is to restore healthy populations of listed species within their native habitats so that they can be removed from the list of threatened or endangered species. Once an area is designated as critical habitat pursuant to the FESA, all federal agencies must consult with the USFWS to ensure that any action they authorize, fund, or carry out is not likely to result in the destruction or adverse modification of the critical habitat. Only activities that involve a federal permit, license, or funding require consultation with the USFWS.

Sections 7 and 10(a) of the FESA regulate actions that could jeopardize endangered or threatened species. Section 7 describes a process of federal interagency consultation for use when federal actions may adversely affect listed species. In this case, take can be authorized via a letter of Biological Opinion issued by the USFWS for non-marine related listed species issues. A Section 7 consultation (formal or 19 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 informal) is required when there is a nexus between endangered species’ use of a site and if there is an associated federal action for a proposed impact (e.g., the USACE would initiate a Section 7 consultation with the USFWS for impacts proposed to USACE jurisdictional areas that may also affect listed species or their critical habitat). Section 10(a) allows the issuance of permits for incidental take of endangered or threatened species with the preparation of a Habitat Conservation Plan (HCP) when there is no federal nexus. The term “incidental” applies if the taking of a listed species is incidental to, and not the purpose of, an otherwise lawful activity. An HCP demonstrating how the taking would be minimized and how steps taken would ensure the species’ survival must be submitted for issuance of Section 10(a) permits.

The MSCP is a regional HCP that was developed pursuant to Section 10(a) of the ESA.

4.1.2 Migratory Bird Treaty Act
The Migratory Bird Treaty Act has protections for all migratory bird species that are native to the United States or that have territories protected under the federal MBTA, as amended under the Migratory Bird Treaty Reform Act of 2004 (FR Doc. 05-5127). The MBTA is generally protective of migratory birds, but does not actually stipulate the type of protection required. In common practice, the MBTA is used to place restrictions on the disturbance of active bird nests during the nesting season (generally February 1 to September 15; beginning January 15 for raptors). In addition, the USFWS commonly places restrictions on disturbances allowed near active raptor nests.

4.1.3 Clean Water Act and Rivers and Harbors Act
Federal wetland regulation (non-marine issues) is guided by the Rivers and Harbors Act of 1899 and the CWA. The Rivers and Harbors Act deals primarily with discharges into navigable waters, while the purpose of the CWA is to restore and maintain the chemical, physical, and biological integrity of all waters of the U.S. Permitting for projects filling waters of the U.S. is overseen by the USACE under Section 404 of the CWA. Most development projects are permitted using Individual Permit or Nationwide Permit instruments.

4.2 STATE

4.2.1 California Environmental Quality Act
Primary environmental legislation in California is found in CEQA and its implementing guidelines (State CEQA Guidelines), which require that projects with potential adverse effects (or impacts) on the environment undergo environmental review. Adverse environmental impacts are typically mitigated as a result of the environmental review process, in accordance with existing laws and regulations.

4.2.2 California Endangered Species Act
The CESA established that it is state policy to conserve, protect, restore, and enhance state endangered species and their habitats. Under state law, plant and animal species may be formally designated rare, threatened, or endangered by official listing by the California Fish and Game Commission. The CESA authorizes that private entities may “take” plant or wildlife species listed as endangered or threatened under the FESA and CESA, pursuant to a federal Incidental Take Permit, if the CDFW certifies that the incidental take is consistent with CESA (CFG Code Section 2080.1[a]). For state-only listed species, Section 2081 of the CFG Code authorizes the CDFW to issue an Incidental Take Permit for state listed threatened and endangered species if specific criteria are met. The MSCP is a regional Natural 20 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 Communities Conservation Plan that was granted take coverage under Section 2081 of the CESA for specific species.

4.2.3 Native Plant Protection Act
Sections 1900 through 1913 of the CFG Code (Native Plant Protection Act) direct the CDFW to carry out the state legislature’s intent to “…preserve, protect, and enhance endangered or rare native plants of this state.” The NPPA gives the California Fish and Game Commission the power to designate native plants as “endangered” or “rare” and protect endangered and rare plants from “take”.

4.2.4 California Fish and Game Code
The CFG Code provides specific protection and listing for several types of biological resources. Section 1600 of the CFG Code requires a Streambed Alteration Agreement (SAA) for any activity that would alter the flow, change, or use any material from the bed, channel, or bank of any perennial, intermittent, or ephemeral river, stream, and/or lake. Typical activities that require an SAA include excavation or fill placed within a channel, vegetation clearing, structures for diversion of water, installation of culverts and bridge supports, cofferdams for construction dewatering, and bank reinforcement. Notification is required before any such activities.

Pursuant to CFG Code Section 3503, it is unlawful to take, possess, or needlessly destroy the nest or eggs of any bird, except as otherwise provided by this code or any regulation made pursuant thereto. Raptors and owls, and their active nests, are protected by CFG Code Section 3503.5, which states that it is unlawful to take, possess, or destroy any birds of prey or to take, possess, or destroy the nest or eggs of any such bird unless authorized by the CDFW. Section 3513 states that it is unlawful to take or possess any migratory non-game bird, as designated in the MBTA. These regulations could require that construction activities (particularly vegetation removal or construction near nests) be reduced or eliminated during critical phases of the nesting cycle, unless surveys by a qualified biologist demonstrate that nests, eggs, or nesting birds will not be disturbed.

4.2.5 Porter-Cologne Water Quality Control Act
This statute regulates surface waters and wetlands within the State and is governed by the RWQCB.

Features that support aquatic resources (i.e., hydrophytic vegetation, hydric soils, and wetland hydrology) but are isolated (i.e., lack downstream connectivity to waters of the U.S.) could be subject to regulation pursuant to the State Porter-Cologne Water Quality Control Act (Porter-Cologne). Impacts to isolated wetlands and/or waters of the State require a Waste Discharge Requirement Permit from the RWQCB.

4.2.6 Natural Communities Conservation Planning Act
The NCCP program is a cooperative effort to protect habitats and species. It began under the state's NCCP Act of 1991, legislation broader in its orientation and objectives than the CESA or FESA. These laws are designed to identify and protect individual species that have already declined significantly in number. The NCCP Act of 1991 and the associated Southern California Coastal Sage Scrub NCCP Process Guidelines (1993), Southern California Coastal Sage Scrub NCCP Conservation Guidelines (1993), and NCCP General Process Guidelines (1998) have been superseded by the NCCP Act of 2003. 21 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 The primary objective of the NCCP program is to conserve natural communities at the ecosystem level, while accommodating compatible land use. The program seeks to anticipate and prevent the controversies and gridlock caused by species' listings by focusing on the long-term stability of wildlife and plant communities and including key interests in the process.

This voluntary program allows the state to enter into planning agreements with landowners, local governments, and other stakeholders to prepare plans that identify the most important areas for a threatened or endangered species, and the areas that may be less important. These NCCP plans may become the basis for a state permit to take threatened and endangered species in exchange for conserving their habitat. The CDFW and USFWS worked to combine the NCCP program with the federal HCP process to provide take permits for state and federal listed species. Under the NCCP, local governments, such as the County, can take the lead in developing these NCCP plans and become the recipients of state and federal take permits.

4.3 COUNTY OF SAN DIEGO
The County regulates natural resources (among other resources) via the MSCP, as discussed below.

4.3.1 Multiple Species Conservation Program
The California NCCP Act of 1991 (Section 2835) allows the CDFW to authorize take of species covered by plans in agreement with NCCP guidelines. A Natural Communities Conservation Program initiated by the State of California focuses on conserving coastal sage scrub, and in concert with the USFWS and the federal ESA, is intended to avoid the need for future federal and state listing of coastal sage scrubdependent species.

The San Diego MSCP Plan for the southwestern portion of San Diego County was approved in August 1998 and covers 85 species (County 1998). The City of San Diego, portions of the unincorporated County, and 10 additional city jurisdictions make up the San Diego MSCP Plan area. It is a comprehensive, long-term habitat conservation plan that addresses the needs of multiple species by identifying key areas for preservation as open space, in order to link core biological areas into a regional wildlife preserve.

The San Diego Final MSCP Plan includes the cities of Del Mar, Poway, San Diego, Santee, El Cajon, La Mesa, Lemon Grove, National City, Chula Vista, Coronado, and Imperial Beach. Local jurisdictions implement their respective portions of the plans by developing subarea plans that describe their specific implementing mechanisms, preserve boundaries, and species and habitats protection while preserving the integrity of the MSCP. The City of Santee is currently in the process of developing its Subarea plan, which would rely on a combination of hardline protection areas and softline protection zones to protect species and habitat.

4.4 LOCAL

4.4.1 Santee General Plan
Section 65302 (d) of the California Planning and Zoning Laws requires each City’s General Plan to contain a Conservation Element that is intended to address the conservation, development, and utilization of 22 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 natural resources. These resources may include water, forests, rivers, soils, minerals, fisheries, and wildlife.

Objective 7.0 of the Santee General Plan Conservation Element requires the following policies to preserve significant biological resources.
• Policy 7.1: The City shall encourage the preservation and enhancement of significant biological resources in areas designated as permanent open space.
• Policy 7.2: The City shall require that all development proposals provide appropriate mitigation for identified significant biological resources, including selective preservation, sensitive site planning techniques, and in-kind mitigation for identified impacts. • Policy 7.3: The City shall require that, for all development proposals involving the setting aside of land for permanent open space, either on-site or off-site, provisions are in place to ensure the long-term management of the open space and biological resources.

4.4.2 City of Santee Draft MSCP Subarea Plan
The City of Santee is currently participating in the MSCP through the preparation of a Subarea Plan. The Plan provides a framework for promoting the protection and enhancement of natural resources, including listed species and species that may become listed during the permit term and their habitats, while streamlining the permitting process for planned development, infrastructure development, and infrastructure and facilities operations and maintenance activities (Covered Activities). The Plan will enable the City of Santee to receive listed species take permits for identified activities and projects conducted by the City and those under their jurisdiction where the City has discretion over the activity.

The Plan Area covers 10,500.8 acres, including lands within the jurisdiction of the City of Santee, plus off-site conservation areas. The permits that would ultimately be issued by the Wildlife Agencies will address 20 Covered Species that are currently listed as threatened or endangered or may become listed during the permit term, that may be impacted by Covered Activities, and that will benefit from Planrelated conservation and management.

4.4.3 Santee Municipal Code
The City’s municipal code requires that all new developments, subdivisions, or tracts that are planned in Fire Hazard Severity Zones and/or Wildland Urban Interface areas have a minimum of 100 horizontal feet of defensible space between flammable structures and wildland areas. Typically, defensible space comprises two brush management areas: Zone 1 (the first 50 feet from flammable structures) and Zone 2 (the second 50 feet). Zone 1 may consist of pavement; walkways; turf; and permanently landscaped, irrigated, and maintained ornamental plantings. Fire resistive trees are allowed if placed or trimmed so that crowns are maintained more than 10 feet from the structure(s). Zone 2 may include low-growing, fire resistant shrubs and ground covers. Zone 2 must have an average plant height of under 24 inches and cover of native, non-irrigated vegetation of under 30 percent. 23 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024

5.0 SIGNIFICANCE OF PROJECT IMPACTS AND

PROPOSED MITIGATION
This section presents an analysis of anticipated direct and indirect impacts to biological resources associated with the implementation of the proposed project. Direct impacts immediately alter the affected biological resources such that those resources are eliminated temporarily or permanently.

Indirect impacts consist of secondary effects of a project, including drainage and toxins (water quality), lighting, noise, and invasive plant species. Overall, cumulative impacts are also addressed.

5.1 CRITERIA FOR DETERMINING IMPACT SIGNIFICANCE
The significance of impacts to biological resources present or those with the potential to occur was determined based on the sensitivity of the resource and the extent and severity of the anticipated impacts. In general, for certain highly sensitive resources (e.g., federally listed species), any impact would be significant. Conversely, other resources that are of low sensitivity (e.g., species with a large, locally stable population in the region but declining elsewhere) could sustain some impact with a less than significant effect.

According to Appendix G of the CEQA Guidelines, project impacts to biological resources would be considered significant if they would:
(a) Have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special-status species in local or regional plans, policies, or regulations, or by CDFW or USFWS.
(b) Have a substantial adverse effect on any riparian habitat or sensitive natural community identified by local or regional plans, policies, regulations, or by CDFW or USFWS. (c) Have a substantial adverse effect on federally protected wetlands as defined by Section 404 of the CWA (including, but not limited to, marsh, vernal pool, coastal, etc.) through direct removal, filling hydrological interruption, or other means.
(d) Interfere substantially with the movement of any native resident or migratory fish or wildlife species or with established native resident or migratory wildlife corridors, or impede the use of native wildlife nursery sites.
(e) Conflict with local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance.
(f) Conflict with provisions of an adopted Habitat Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or state habitat conservation plan.

5.2 ISSUE 1: SPECIAL-STATUS SPECIES
Would the project have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special status species in local or regional plans, policies, or regulations, or by the CDFW or USFWS?
24 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 Direct impacts immediately alter the affected biological resources such that those resources are eliminated temporarily or permanently. Impacts were analyzed and quantified by overlaying the proposed boundaries of the impact associated with the project onto the baseline biological maps.

5.2.1 Impacts to Vegetation Communities
Implementation of the overall proposed project is anticipated to result in direct impacts to 448.89 acres of habitat (Table 4, Vegetation Community/Land Use Types Impacts and Mitigation Requirements; Figure 7, Vegetation and Sensitive Resources/Impacts). No direct impacts are anticipated to occur to conserved lands designated as Park/Open Space and Floodway/Open Space (Figure 4).

Project activities would occur over an extended period; therefore, the overall proposed project impacts would not occur all at once. Impacts presented in Table 4 account for all the proposed projects known and potential impacts within the defined TCSP, AEN, and Properties 16A, 16B, 20A, and 20B footprint, and there are currently no additional impacts anticipated to occur. If any future development were required to occur outside of the defined TCSP, AEN, or Properties 16A, 16B, 20A, and 20B footprint, a project-level analysis would be submitted to the City to determine if the planned activity deviating from the proposed footprint is consistent with the TCSP, AEN, and applicable mitigation measures and conditions included in that permit. Impacts to vegetation would occur as part of development activities.

Table 4
VEGETATION COMMUNITY/LAND USE TYPES IMPACTS AND MITIGATION REQUIREMENTS1,2 Vegetation Community
Santee
Town
Center
SPA
Arts &
Entertainment
Neighborhood
Property
16A
Property
16B
Property
20A
Property
20B
Mitigation
Ratio
Maximum
Mitigation
Acres
Wetland Habitats
Southern Riparian Forest (61300) 0.01 -- -- -- -- -- 3:1 0.03 Southern Arroyo Willow Riparian Forest
(61320)

6.57 1.52 -- -- -- -- 3:1 19.71
Southern Riparian Scrub (63300) 0.01 -- -- -- -- -- 3:1 0.03 Southern Riparian Scrub – Disturbed
(63300)

0.68 -- -- -- -- -- 3:1 2.04
Southern Riparian Scrub – Restoration
(63300)

0.03 0.03 -- -- -- -- 3:1 0.09
Southern Willow Scrub (63320) 0.47 0.47 0.19 -- -- -- 3:1 1.41 Tamarisk Scrub (63810) 0.16 0.16 -- -- -- -- 3:1 0.48
Arrowweed Scrub (63820) 1.96 0.03 -- -- -- -- 3:1 5.88
Open Water (64100) -- -- -- -- -- -- 3:1 --
Subtotal 9.89 2.21 0.19 -- -- -- -- 29.67
Upland Habitats
Diegan Coastal Sage Scrub (32500) -- -- -- -- -- -- 2:1 -- Diegan Coastal Sage Scrub, Disturbed
(32500)

8.7 8.7 -- -- -- -- 2:1 17.4
Diegan Coastal Sage Scrub: Baccharisdominated (32530) 4.5 4.5 -- -- -- -- 2:1 13.5 Diegan Coastal Sage Scrub: Baccharisdominated, Disturbed (32530) 0.9 0.9 -- -- -- -- 2:1 2.7 Non-native Grassland (42200) 4.2 -- -- -- -- -- 0.5:1 2.1 Eucalyptus Woodland (79100) 1.1 0.7 -- -- -- -- -- --
25 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 Vegetation Community
Santee
Town
Center
SPA
Arts &
Entertainment
Neighborhood
Property
16A
Property
16B
Property
20A
Property
20B
Mitigation
Ratio
Maximum
Mitigation
Acres
Artificial Detention Basin (N/A) 2.0 2.0 1.3 -- -- -- -- -- Disturbed Habitat (11300) 85.7 55.9 9.5 8.5 5.9 7.9 -- -- Developed (12000) 331.9 108.2 <0.1
(0.02)

0.1 1.8 2.0 -- --
Subtotal 439.0 189.9 10.8 8.6 7.7 9.9 -- 35.7
TOTAL 448.89 183.11 10.99 8.6 7.7 9.9 -- 65.37 1 Vegetation categories and numerical codes are from Holland (1986) and Oberbauer (2008). 2 Upland habitats are rounded to the nearest 0.1 acre, while wetland habitats are rounded to the nearest 0.01; thus, total reflects rounding.

5.2.2 Impacts to Special-status Species
Several special-status plant and animal species were observed in the project area during biological surveys. Project impacts would primarily occur in existing developed and disturbed areas. However, portions of the proposed project area extend into native habitats, including wetland and riparian habitats and sensitive uplands habitats, where special-status plant and animal species have been detected or have the potential to occur. Potential project effects on special-status plant and animal species are described below.

5.2.2.1 Special-status Plant Species
The project would result in impacts to three special-status plant species: smooth tarplant (CRPR 1B.1), white rabbit-tobacco (CRPR 2B.2), and southwestern spiny rush (CRPR 4.2). All other special-status plant species observed on-site would either remain undisturbed or be conserved in open space. A total of 243 smooth tarplant individuals, six white rabbit-tobacco individuals, and two southwestern spiny rush individuals observed within the project area would be impacted by the proposed project. No specialstatus plant species were determined to have a high potential to occur within the project area.

Federal or State Listed Plant Species
No impacts would occur to federally and/or state listed plant species as none were documented within the TCSP, AEN, or Properties 16A, 16B, 20A, or 20B.

CRPR 1 or 2 Listed Plant Species
Generally, impacts to plant species with a CNPS CRPR of 1 or 2 are considered potentially significant due to their higher sensitivity status, and the impact analysis evaluates substantial adverse effects to these species. Implementation of the proposed project has the potential to result in direct impacts to the following special-status plant species with a CRPR of 1 or 2: smooth tarplant and white rabbit-tobacco.

Smooth Tarplant
Approximately 243 individuals of smooth tarplant occur in the TCSP project area and the AEN, and within these mapped occurrences, approximately 110 individuals occur on Property 16A (Figure 6).

Mitigation measures BIO-1 and BIO-2 would reduce proposed project impacts on Property 16A to less than significant. If project work limits are exceeded and additional inadvertent impacts occur, the impacts could increase in severity and represent a potential significant impact. Mitigation measures 26 8
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a " (11300) Disturbed Habitat
~
~ ( 42200) Non-native Grassland .!!,
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HELIX Vegetation and Sensitive Resources/Impacts Environmental Planning Santee Town Center Specific Plan Amendment
Proposed Santee Town Center Specific Plan
Study Area
Proposed Arts & Entertainment District Overlay
Property 16A
- Property 168
Property 20A
Property 208
(2:) Impact Avoidance Area
Impact Avoidance Area (SD River Ttails)
Special Status Plant Species
0 San Diego Marsh Elder (Iva hayesiana)
Southwestern Spiny Rush (Juncus acutus ssp. D /eopoldii) Smooth Tarplant (Centromadia pungens ssp. /aevis)
Smooth Tarplant (Centromadia pungens ssp. laevis)
Rabbit Tobacco (Pseudognaphalium /eucacepha/um)
Holland/Oberbauer Classification
Riparian Forests and Woodlands
(61300) Southern Riparian Forest
(61320) Southern Arroyo Willow Riparian Forest
Riparian Shrub/ands
(63300) Southern Riparian Scrub - Disturbed
(63300) Southern Riparian Scrub - Restoration
(63320) Southern Willow Scrub
(63810) Tamarisk Scrub
(63820) Arrowweed Scrub
Upland Forestes and Woodlands
(79100) Eucalyptus Woodland
Soft-leaved, Drought-Deciduous Shrub/ands
(32500) Diegan Coastal Sage Scrub
(32500) Diegan Coastal Sage Scrub - Disturbed
- (32530) Diegan Coastal Sage Scrub - Baccharisdominated - (32530) Diegan Coastal Sage Scrub - Baccharisdominated -Disturbed Upland Herbaceous Vegetation
Figure 7

DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 BIO-3 and BIO-4 would require the installation of temporary construction fencing and biological monitoring where work limits occur adjacent to known sensitive resources to be avoided, including smooth tarplant individuals. Implementation of mitigation measures BIO-3 and BIO-4 would ensure that additional impacts on sensitive resources that occur adjacent to project work limits are avoided.

Additionally, Mitigation measure BIO-5 would ensure that temporary impacts to vegetation communities will be revegetated to native habitats following completion of construction activities.

Implementation of mitigation measure BIO-6 would ensure that future development impacts on smooth tarplant in the TCSP project area and the AEN are reduced to less than significant levels.

White Rabbit-tobacco
A total of six individuals of white rabbit-tobacco occur within the TCSP outside the AEN and conserved lands. These individuals do not occur on Properties 16A, 16B, 20A, and 20B (Figure 7). Implementation of mitigation measure BIO-6 would ensure that future development impacts on white rabbit-tobacco in the TCSP project area and the AEN are reduced to less than significant levels.

CRPR 3 or 4 Listed Plant Species
CRPR 3 and 4 species are relatively widespread, and impacts to such species would not substantially reduce their populations in the region and are not significant. Implementation of the project is anticipated to result in direct impacts to the following special-status plant species with a CRPR of 3 or 4:
southwestern spiny rush.

Southwestern Spiny Rush
One individual occurs within the TCSP on conserved land designated as Park/Open Space along an unnamed tributary to the San Diego River. A second individual occurs within the TCSP outside conserved lands at the southern terminus of Park Center Drive. Additionally, a third individual occurs within the TCSP and AEN outside conserved lands at the southern terminus of Park Center Drive. These individuals do not occur on Properties 16A, 16B, 20A, and 20B (Figure 7). Project impacts to southwestern spiny rush would be less than significant because this relatively widespread species is known to occur elsewhere in the project vicinity, such that the local long-term survival of the species would not be impacted by impacts to two individuals. The impacted individuals are not part of a population at the periphery of the species’ range, located in an area where the taxon is especially uncommon, or occurring on unusual substrates. Lastly, there are numerous documented occurrences of this species throughout the region, including on conserved lands, indicating that the project does not represent a geographically significant population.

Other Special-status Plant Species
Implementation of the proposed project is not anticipated to result in impacts to other special-status plant species known from or with high potential to occur in the project area. These species are expected to be avoided by project activities due either to the species’ location being outside of the proposed development footprint, or the lack of suitable conditions (habitat, soils, hydrology, elevations, etc.) within the development footprint. However, due to the long-term nature of the project, potential additional or new populations of special-status plant species could be discovered in the future, including MSCP Narrow Endemic species. Project impacts to special-status plant species may be considered significant depending on the species, sensitivity, and the number of plants to be impacted. Significant impacts to special-status plant species, if determined to occur, would require mitigation, including 27 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 species-specific mitigation, consistent with the City’s General Plan (City 2020). Implementation of mitigation measure BIO-6 would ensure that future development impacts on sensitive resources that occur adjacent to project work limits are avoided. Additionally, Mitigation measure BIO-5 would ensure that temporary impacts to vegetation communities will be revegetated to native habitats following completion of construction activities.

5.2.2.2 Special-status Animal Species
Implementation of the proposed project has the potential to result in direct impacts to habitats occupied or suitable for special-status wildlife species. These habitats include wetland and riparian habitats, open water/lake, Diegan coastal sage scrub and various subtypes of this habitat, and nonnative grassland. Such impacts would be a result of development activities such as vegetation removal, which could cause loss of habitat and/or direct injury or mortality to individuals. These impacts are described below.

Federally or State Listed Animal Species
Implementation of the proposed project would impact locations where the following three listed animal species have been documented within the proposed project area or have high potential to occur: coastal California gnatcatcher, least Bell’s vireo, and western spadefoot toad; additional information is provided below. Nesting and migratory birds also may be impacted by future development.

Coastal California Gnatcatcher
Implementation of the proposed project within both the TCSP and AEN areas would result in impacts to coastal California gnatcatcher from the removal of 14.1 acres of Diegan coastal sage scrub (comprising disturbed, baccharis-dominated, and disturbed baccharis-dominated). Habitat suitable for CAGN does not occur on Properties 16A, 16B, 20A, or 20B. Impacts from the TCSP and AEN total no more than 8.7 acres of disturbed Diegan coastal sage scrub and 5.4 acres of Diegan coastal sage scrub: Baccharis dominated (including disturbed). Impacts to occupied and potential CAGN habitat within the TCSP and AEN areas are considered significant and would require mitigation.

If construction activities or operational activities in the TCSP or AEN were to occur during the gnatcatcher breeding season (March 1 through August 15) and impact occupied CAGN habitat, direct impacts to nesting CAGN would be considered significant and would require mitigation. Through the implementation of mitigation measures BIO-6, BIO-7, BIO-8, and BIO-9, impacts to this species would be reduced to less than significant. Additionally, Mitigation measure BIO-5 would ensure that temporary impacts to vegetation communities will be revegetated to native habitats following completion of construction activities.

Least Bell’s Vireo
A maximum amount of 7.93 acres of suitable habitat for least Bell’s vireo may be impacted by the development of the TCSP, AEN, and Property 16A areas, respectively. Suitable breeding habitat for the least Bell’s vireo within the TCSP project area comprises 0.01 acre of southern riparian forest, 6.57 acres of southern arroyo willow riparian forest, 0.72 acre of southern riparian scrub (including disturbed and restoration), 0.47 acre of southern willow scrub, and 0.16 acre of tamarisk scrub. Suitable breeding habitat for the least Bell’s vireo within the AEN project area comprises 1.52 acres of southern arroyo willow riparian forest, 0.03 acre of southern riparian scrub (restoration), 0.47 acre of southern willow 28 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 scrub, and 0.16 acre of tamarisk scrub. Suitable breeding habitat for the least Bell’s vireo within Property 16A comprises 0.19 acre of southern willow scrub. If construction activities were to occur during the vireo breeding season (March 15 through September 15) and impact occupied least Bell’s vireo habitat, direct impacts to nesting least Bell’s vireo would be considered significant and would require mitigation.

Additionally, indirect impacts to least Bell’s vireo would occur if construction activities or operational activities were to take place during the vireo breeding season and were to generate noise levels greater than 60 dBA, or exceed ambient noise levels if greater than 60 dBA, within occupied least Bell’s vireo habitat. Through the implementation of mitigation measures BIO-6, BIO-7, BIO-8, and BIO-9, impacts to this species would be reduced to less than significant. Additionally, Mitigation measure BIO-5 would ensure that temporary impacts to vegetation communities will be revegetated to native habitats following completion of construction activities.

Western Spadefoot Toad
The western spadefoot toad has a high potential to occur in sparse riparian habitat along the San Diego River. Construction related to the implementation of the proposed project could impact western spadefoot toad. Through the implementation of mitigation measures BIO-6 and BIO-10, impacts to this species would be reduced to less than significant. Additionally, Mitigation measure BIO-5 would ensure that temporary impacts to vegetation communities will be revegetated to native habitats following completion of construction activities. Therefore, the proposed project’s impacts to western spadefoot toad would be less than significant.

Nesting Birds
The project area contains trees, shrubs, and other vegetation that provide suitable nesting habitat for common birds, including raptors (such as Cooper’s hawk), protected under the MBTA and CFG Code.

Construction of the proposed project could result in the removal or trimming of trees and other vegetation during the general bird nesting season (January 15 through July 15 for raptors and February 1 to September 15 for general avian species) and, therefore, could result in impacts to nesting birds in violation of the MBTA and CFG Code. The proposed project construction or operation within 500 feet of breeding habitat for nesting birds could result in adverse indirect impacts related to construction or operational noise. Impacts to nesting birds and temporary (foraging, migration, and dispersal) habitat would be significant. However, through the implementation of mitigation measures BIO-7, BIO-8, and BIO-9, impacts to nesting birds would be reduced to less than significant.

Other Special-status Animal Species
Implementation of the proposed project could result in impacts to the following seven other special-status animal species with high potential to occur: San Diegan legless lizard, California glossy snake, Belding’s orange-throated whiptail, San Diegan tiger whiptail, red diamond rattlesnake, Blainville’s horned lizard, and two-striped garter snake.

Potential impacts to other special-status animal species would result from the removal of 9.89 acres of wetland and riparian habitats, 18.3 acres of sensitive upland habitats, and 420.7 acres of non-sensitive upland habitats that may support these species. These impacts would be less than significant due to the small number of individuals that would potentially be affected, the relatively small amount of habitat to be impacted, and the large amount of suitable habitat in the project area that would be avoided by activities and would continue to be preserved within conserved lands. Impacts to MSCP-covered species 29 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 would be less than significant based on adequate species coverage and suitable habitats protected under the MSCP.

5.2.3 Mitigation Measures
The following mitigation measures would ensure that potential impacts on special-status plant and animal species are avoided by the project.

BIO-1 Focused surveys for smooth tarplant will be completed during the blooming period for this species (April to September) before clearing and grubbing for the development of sites 16A, 16B, 20A, and 20B. Smooth tarplant observed in a proposed impact area will be flagged and avoided during construction. If impacts to smooth tarplant individuals cannot be avoided, mitigation will consist of on- or off-site preservation, translocation, and/or restoration within a BRCA, with a preference for species salvage and transplantation on-site if feasible, as determined by a qualified biologist and approved by the City. Seed material will be sourced from within 25 miles of the project area, but if seed is not available, due to seasonality or a poor seeding year, seed collected from southeastern San Diego County may be used. If species are transplanted for mitigation, these species will be included in a plant salvage and translocation plan according to mitigation measure BIO-2.

BIO-2 Before vegetation clearing for development of sites 16A, 16B, 20A, and 20B, if smooth tarplant is being impacted, and translocation is selected as part of the mitigation package according to mitigation measure BIO-1, a plant salvage and translocation plan shall be prepared for smooth tarplant impacted by the project. The plan shall, at a minimum, evaluate options for plant salvage and relocation, including native plant mulching, selective soil salvaging, and application/relocation of resources within the project area. Relocation efforts may include seed collection and/or transplantation to a suitable receptor site and will be based on the most reliable methods of successful relocation. The program shall contain a recommendation for the method of salvage and relocation/application based on the feasibility of implementation and the likelihood of success. The program shall include, at a minimum, an implementation plan, maintenance and monitoring program, success criteria, estimated completion time, and any relevant contingency measures. The resource salvage plan shall be prepared by a qualified biologist and shall be implemented according to the Mitigation Monitoring and Reporting Program for the project, to the satisfaction of the City.

BIO-3 To help ensure errant impacts to sensitive vegetation communities and jurisdictional waters outside of the impact footprint are avoided during construction in the Housing Element sites, environmental exclusionary fencing, where determined necessary by the qualified biologist, would be installed at the edges of the impact limits before the initiation of grading. All construction staging shall occur within the approved limits of construction. A qualified biologist will monitor the installation of environmental fencing wherever it would abut sensitive vegetation communities. The biologist will periodically monitor the limits of construction operations to ensure that avoidance areas are delineated with temporary fencing and that fencing remains intact. Unless otherwise determined by the monitoring biologist, periodically means once every 14 days after environmental exclusionary fencing has been installed at the edges of the impact limits.
30 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 BIO-4 Before vegetation clearing for development of the Housing Element sites a qualified biologist shall conduct a Worker Environmental Awareness Program (WEAP) training session for project and construction personnel before the commencement of work. The training shall include a description of the species of concern and their habitats, the general provisions of the Endangered Species Acts (FESA and CESA), the penalties associated with violating the provisions of the acts, the general measures that are being implemented to conserve the species of concern as they relate to the project, and the access routes to and project area boundaries.

BIO-5 Immediately following completion of temporary construction activities within the TCSP, AEN, and Housing Element Sites, the contractor shall restore the temporary impact areas to preconstruction contours and revegetate the areas with native plant material, as follows: excavated soils and cleared native plant material shall be stockpiled within an appropriate staging area along the edge of the work corridor to the extent feasible; excavated soils shall be backfilled upon completion of construction and recontoured to pre-existing conditions; cleared native plant material shall be distributed over the temporarily disturbed areas; native seed application and installation of native container plants. Plant and seed material will be sourced from within five miles of the project area, but if plant and seed material is not available, due to seasonality or a poor seeding year, seed collected from southeastern San Diego County may be used.

Maintenance and monitoring of the revegetation shall be provided for a period of up to 25 months or for a period sufficient to establish native plant material and to provide vegetative cover that prevents soil erosion. Appropriate landscaping will be selected based on the vegetation communities within the portion of the study area adjacent to the project. In areas supporting native (or disturbed native) vegetation communities, revegetation of temporarily impacted areas will be with appropriate native plant materials. Only non-invasive plant species will be included in the revegetation plans (species not listed on the California Invasive Plant Inventory prepared by the California Invasive Plant Council (2023). A qualified landscape architect and/or qualified biologist shall review landscape plant palettes before implementation to ensure that no invasive species are included. Any planting stock brought onto the project area shall be inspected to ensure it is free of pest species that could invade natural areas, including but not limited to, Argentine ants (Linepithema humile) and South American fire ants (Solenopsis invicta). Inspections of planting stock for habitat revegetation shall be by a qualified biologist. Any planting stock found to be infested with such pests shall be quarantined, treated, or disposed of according to best management practices (BMPs) by qualified personnel, in a manner that precludes invasions into natural habitats. Temporary irrigation via irrigation lines and appurtenances (or an alternate method approved by the City and qualified biologist) shall be provided by the contractor for a period sufficient to establish plant material and to provide vegetative cover that prevents soil erosion. Irrigation shall be performed in a manner that avoids runoff, seepage, and overspray onto adjacent properties, non-irrigated areas, walls, roadways, waterways, or structures.

BIO-6 Applications for future development outside of sites 16A, 16B, 20A, and 20B, where the City has determined the potential for impacts to sensitive biological resources, shall be required to comply with the following mitigation measure:
a. Before the issuance of any construction permit or any earth-moving activities, a sitespecific general biological resources survey shall be conducted to identify the presence of any sensitive biological resources, including any sensitive plant or wildlife species. A biological resources report shall be submitted to the City to document the results of the 31 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 biological resources survey. The report shall include (1) the methods used to determine the presence of sensitive biological resources; (2) vegetation mapping of all vegetation communities and/or land cover types; (3) the locations of any sensitive plant or wildlife species; (4) an evaluation of the potential for occurrence of any listed, rare, and narrow endemic species; and (5) an evaluation of the significance of any potential direct or indirect impacts from the proposed project. If suitable habitat for sensitive species is identified based on the general biological survey, then focused presence/absence surveys shall be conducted in accordance with applicable resource agency survey protocols and incorporated into the biological resources report. If potentially significant impacts to sensitive vegetation communities and biological resources are identified, project-level grading and site plans shall incorporate project design features to avoid or minimize direct impacts on sensitive biological resources to the extent feasible, and the report shall also recommend appropriate mitigation to reduce the impacts to below a level of significance, where feasible. Mitigation measures shall be consistent with the standards contained in the Santee Subarea Plan, and projects shall be required to obtain all necessary permits to ensure compliance with applicable federal, state, and local regulations, such as the federal and state Endangered Species Acts. Mitigation ratios for sensitive vegetation community impacts are:
• Wetland habitats – 3:1 ratio
• Diegan coastal sage scrub – 2:1 ratio
• Non-native grassland – 0.5:1 ratio
Mitigation ratios shall be doubled for sensitive vegetation community impacts within the Preserve and Open Space System designated by the Santee Subarea Plan, once adopted.
b. Environmentally Sensitive Areas shall be identified in the biological resources report and avoided to the maximum extent practicable. In areas near or adjacent to Environmentally Sensitive Areas (i.e., natural habitats and vegetation, wetlands, wildlife areas, wildlife corridors), the biological resources report will consider the following measures:

Avoidance of Environmentally Sensitive Areas. In areas near or adjacent to Environmentally Sensitive Areas, construction limits shall be clearly demarcated using highly visible barriers (such as silt fencing), which shall be installed under the supervision of a qualified biologist before the commencement of work. Construction personnel shall strictly limit their activities, vehicles, equipment, and construction materials to the project footprint, including designated staging areas and routes of travel. The construction areas shall be limited to the minimal area necessary to complete the proposed project. The fencing shall remain in place until the completion of all construction activities and shall be promptly removed when construction is complete.

Biological Monitoring. A qualified biological monitor shall conduct construction monitoring of all work conducted within/adjacent to environmentally sensitive areas 32 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 during all vegetation removal and ground-disturbing activities such as staging and grading, for the duration of the proposed project to ensure that practicable measures are being employed to avoid incidental disturbance of habitat outside the project footprints and to survey for sensitive wildlife species. When vegetation removal and ground-disturbing activities are not occurring, as-needed monitoring at the project areas shall occur.

Worker Environmental Awareness Program. In areas near or adjacent to Environmentally Sensitive Areas, a qualified biologist shall conduct a WEAP training session for project and construction personnel before the commencement of work. The training shall include a description of the species of concern and their habitats, the general provisions of the Endangered Species Acts (FESA and CESA), the penalties associated with violating the provisions of the acts, the general measures that are being implemented to conserve the species of concern as they relate to the project, and the access routes to and project area boundaries.

Best Management Practices. During future project construction activities, the following BMPs shall be implemented:
• All equipment maintenance, staging, and dispensing of fuel, oil, or any other such activities shall occur in developed or designated non-sensitive upland habitat areas. The designated upland areas shall be located to prevent runoff from any spills from entering Waters of the US.
• A construction Storm Water Pollution Prevention Plan (SWPPP) and a soil erosion and sedimentation plan shall be developed (where requirements are met) to minimize erosion and identify specific pollution prevention measures that shall eliminate or control potential point and nonpoint pollution sources on-site during and following the project construction phase. The SWPPP shall identify specific BMPs during project construction to prevent any water quality standard exceedances. In addition, the SWPPP shall contain provisions for changes to the plan such as alternative mechanisms, if necessary, during project design and/or construction to achieve the stated goals and performance standards.
• Trash shall be stored in closed containers so that it is not readily accessible to scavengers and shall be removed from the construction site on a daily basis. • Water quality shall be visually monitored by the biological monitor to ensure that no substantial increases in turbidity occur during construction. All relevant natural resource permits and authorizations shall be obtained from appropriate agencies (i.e., USACE, RWQCB, and CDFW) before the initiation of construction activities. Permit conditions contained within the permits and authorizations shall be employed throughout the duration of the project. • Hydrologic connectivity shall be maintained within drainages during the duration of construction. Brush, debris material, mud, silt, or other pollutants 33 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 from construction activities shall not be placed within drainages and shall not be allowed to enter a flowing stream.
• Dust control measures shall be implemented by the contractor to reduce excessive dust emissions. Dust control measures shall be carried out at least two times per day on all construction days, or more during windy or dry periods, and may include wetting work areas, the use of soil binders on dirt roads, and wetting or covering stockpiles.
• No pets shall be allowed in, or adjacent to, the project areas. • Rodenticides, herbicides, insecticides, or other chemicals that could potentially harm wildlife or native plants shall not be used near or within Environmentally Sensitive Areas within or near the roadway segments.
• Construction equipment shall be cleaned of mud or other debris that may contain invasive plants and/or seeds and inspected to reduce the potential of spreading noxious weeds before mobilizing to the site and before leaving the site during the course of construction.
• The cleaning of equipment will occur at least 300 feet from Environmentally Sensitive Area fencing.
• Use of Native Plants. All project-related planting and landscaping shall not use plants listed by the California Invasive Plant Council. Locally native plants shall be used near open space and native areas to the greatest extent feasible.

BIO-7 Grubbing or clearing of vegetation within the TCSP, AEN, or Housing Element Sites during the general avian breeding season (February 1 to September 15), least Bell’s vireo breeding season (March 15 to September 15), coastal California gnatcatcher breeding season (March 1 to August 15), or raptor breeding season (January 15 to July 15) shall be avoided to the extent feasible. If grubbing, clearing, or grading occurs during the breeding season, a pre-construction survey shall be conducted by a qualified biologist no more than three days before the commencement of activities to determine if active bird nests are present in the affected areas. If there are no nesting birds (includes nest building or other breeding/nesting behavior) within 300 feet of the survey area (500 feet for raptors), clearing, grubbing, and grading shall be allowed to proceed in that area. Furthermore, if clearing, grubbing, or grading activities are to resume in an area where they have not occurred for a period of seven or more days during the breeding season, an updated survey for avian nesting will be conducted by a qualified biologist within three days before the commencement of clearing, grubbing, or grading activities in that area. If active nests or nesting birds are observed within 300 feet of the survey area (500 feet for raptors), the biologist shall flag a buffer around the active nests, and clearing, grubbing, or grading activities shall not occur within 300 feet of active nests (500 feet for raptors) until nesting behavior has ceased, nests have failed, or young have fledged as determined by a qualified biologist. If the qualified biologist determines that the species will not be impacted with a reduced buffer (i.e., less than 300 feet for general avian species and 500 feet for raptors), potentially with the implementation of avoidance measures to reduce noise, as necessary, and/or the qualified biologist monitors the active nest during clearing, grubbing, or grading to ensure no impacts to 34 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 the species occur, these activities may occur outside the reduced buffer during the breeding season, as long as the species is not impacted.

BIO-8 If heavy equipment would be in operation during construction within the TCSP area, AEN, or Housing Element Sites during the breeding season for least Bell’s vireo (March 15 to September 15), coastal California gnatcatcher (March 1 to August 15), or raptors (January 15 to July 15), pre-construction survey(s) shall be conducted by a qualified biologist, as appropriate, to determine whether these species occur within the areas potentially impacted by noise. If preconstruction surveys determine that active nests belonging to these species are absent from the potential noise impact area (within 300 feet for vireo or gnatcatcher, 500 feet for raptors, or as otherwise determined by a qualified biologist), clearing, grubbing, and grading shall be allowed to proceed. If pre-construction surveys determine the presence of active nests belonging to these species, then clearing, grubbing, and grading within 300 feet of the nest location(s) for vireo or gnatcatcher and 500 feet for raptors, shall: (1) be postponed until a permitted biologist determines the nest is no longer active; (2) be allowed to continue if nest monitoring by a qualified biologist determines that noise levels are not adversely affecting the nesting birds, or (3) not occur until a temporary noise barrier or berm is constructed at the edge of the clearing, grubbing, or grading footprint and/or around the piece of equipment to ensure that noise levels are reduced to below 60 A-weighted decibels (dBA) or ambient at the nest location. Decibel output for Item (3) will be confirmed by a qualified noise specialist, and intermittent monitoring by a qualified biologist will be required to ensure that conditions have not changed.

BIO-9 If operational activities within the TCSP, AEN, or Properties 16A, 16B, 20A, and 20B will produce noise levels that will adversely affect nesting birds during the breeding season for least Bell’s vireo (March 15 to September 15), coastal California gnatcatcher (March 1 to August 15), or raptors (January 15 to July 15), activities nearby to suitable special-status species habitat on preserved land will be designed and implemented to minimize noise impacts to preserves and wildlife. Operational activities shall (1) be allowed to continue if a temporary noise barrier or berm is constructed at the edge of the suitable special-status species habitat to ensure that noise levels are reduced to below 60 A-weighted decibels (dBA) or the measured existing ambient at the edge of suitable habitat, or (2) operational activities that would be above 60 dBA Leq hourly at the edge of suitable habitat shall be allowed to continue with the incorporation of noise reduction strategies in equipment, siting and site design, features, timing, noise barriers, landscaping, and buffer separation.

BIO-10 A focused pre-construction survey for special-status animal species will be completed by a qualified biologist before clearing and grubbing within the TCSP, AEN, or Properties 16A, 16B, 20A, and 20B. Aside from birds, which are covered by other mitigation measures, this survey will focus on the special-status animal species identified as having high potential to occur on-site:
western spadefoot toad, San Diegan legless lizard, California glossy snake, Belding’s orangethroated whiptail, San Diegan tiger whiptail, red diamond rattlesnake, Blainville’s horned lizard, and two-striped garter snake. Occupied special-status species habitat observed in the proposed impact area will be flagged and avoided during construction until the qualified biologist determines that special-status species are no longer using the habitat. 35 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024

5.2.4 Conclusions
Project implementation could result in significant impacts to smooth tarplant, western spadefoot toad, and nesting birds and raptors with the potential to nest within or adjacent to the project area.

Implementation of mitigation measures BIO-1 through BIO-10 would ensure that potential impacts are avoided by the project.

5.3 ISSUE 2: RIPARIAN HABITAT AND SENSITIVE NATURAL

COMMUNITIES
Would the project have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans, policies, and regulations or by the CDFW or USFWS?

5.3.1 Impact Analysis
TCSP
Less than Significant with Mitigation. The project would result in impacts to jurisdictional wetlands and riparian habitats as defined by the USACE, RWQCB, and CDFW. These impacts would be considered potentially significant. These impacts would be reduced to a less than significant level through the implementation of mitigation measure BIO-11, which requires the project to obtain wetland permits through the appropriate wetland permitting agencies and would require the in-kind creation of new wetland of the same type lost, at a ratio determined by the applicable regulatory agencies that would prevent any net loss of wetland functions and values.

Indirect impacts to adjacent jurisdictional waters and wetlands could occur through inadvertent intrusion into these adjacent areas by construction vehicles, equipment, and personnel. These impacts would be mitigated through the implementation of mitigation measure BIO-6.

The proposed project, if fully built out, would result in impacts to Diegan coastal sage scrub (including disturbed), Diegan coastal sage scrub: Baccharis-dominated, and non-native grassland, which are considered sensitive natural communities and require mitigation. The project would also result in impacts to eucalyptus woodland, artificial detention basin, disturbed habitat, and developed land, which are not considered sensitive natural communities. Impacts to non-sensitive vegetation communities are not considered significant and, therefore, do not require mitigation.

Impacts to up to 8.7 acres of Diegan coastal sage scrub (disturbed), 5.4 acres of Diegan coastal sage scrub: Baccharis-dominated (including disturbed), and 4.2 acres of non-native grassland, totaling

18.3 acres) would be reduced to less than significant through the implementation of Mitigation measure BIO-6. Mitigation measure BIO-5 would ensure that temporary impacts to vegetation communities will be revegetated to native habitats following the completion of construction activities.

AEN
Less than Significant with Mitigation. The AEN portion of the project would result in impacts to jurisdictional wetlands and riparian habitats as defined by the USACE, RWQCB, and CDFW. These impacts would be considered potentially significant. These impacts would be reduced to a less than significant level through the implementation of Mitigation Measure BIO-11, which requires the project 36 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 to obtain wetland permits through the appropriate wetland permitting agencies and would require the in-kind creation of new wetland of the same type lost, at a ratio determined by the applicable regulatory agencies that would prevent any net loss of wetland functions and values.

The AEN portion of the proposed project would result in impacts to Diegan coastal sage scrub (including disturbed) and Diegan coastal sage scrub: Baccharis-dominated, which are considered sensitive natural communities and require mitigation. The project would also result in impacts to eucalyptus woodland, artificial detention basin, disturbed habitat, and developed land, which are not considered sensitive natural communities. Impacts to non-sensitive vegetation communities are not considered significant and, therefore, do not require mitigation.

Impacts to 8.7 acres of Diegan coastal sage scrub (disturbed) and 5.4 acres of Diegan coastal sage scrub:

Baccharis-dominated (including disturbed; totaling 14.1 acres) would be reduced to less than significant through the implementation of Mitigation measure BIO-6. Mitigation measure BIO-5 would ensure that temporary impacts to vegetation communities will be revegetated to native habitats following the completion of construction activities.

Property 16A
Less than Significant with Mitigation. Development of the Riverview Parkway project site, which is inclusive of Property 16A, and associated mitigation within Las Colinas Channel, would not result in impacts to sensitive upland natural communities requiring mitigation. The Riverview Parkway project would result in impacts to the artificial detention basin, disturbed habitat, and developed land, which are not considered sensitive natural communities. Impacts to southern willow scrub are discussed below under CDFW jurisdiction.

Waters of the U.S.

Development of the Riverview Parkway project site, which is inclusive of Property 16A and associated mitigation within Las Colinas Channel, would impact a total of 0.37 acre of wetland and non-wetland waters of the U.S. (Table 5, Impacts to Jurisdictional Waters [River Parkways Project]), comprising 0.04 acre of wetland waters of the U.S. and 0.32 acre of non-wetland waters of the U.S. (REC 2023). By realigning and widening the Las Colinas channel as mitigation for the Riverview Parkway Project, the mitigation will comprise the creation of 0.74 acre waters of the U.S. and 1.24 acres of riparian habitat.

Additionally, 0.08 acre of existing waters of the U.S. that would be temporarily affected by recontouring (will remain within the widened Las Colinas Channel) will also be revegetated and maintained (REC 2023). These impacts would be mitigated through the implementation of mitigation measure BIO-12.

Implementation of mitigation measures BIO-3 and BIO-4 would ensure that additional impacts on sensitive resources that occur adjacent to project work limits are avoided. 37 1
DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 Table 5
IMPACTS TO JURISDICTIONAL WATERS (RIVER PARKWAYS PROJECT)1 Habitat USACE RWQCB CDFW
Wetlands/Riparian
Wetland waters of the
U.S./State

0.04 0.04 --
Southern willow scrub -- -- 1.18
Subtotal 0.04 0.04 1.18
Non-wetland Waters
Non-wetland waters of the
U.S./State

0.32 0.32 --
Subtotal 0.32 0.32 --
TOTAL 0.37 0.37 1.18
Impacts are presented in acre(s) rounded to the nearest 0.01. Totals calculated by adding the raw acreage and then rounding to the nearest 0.01.

Waters of the State
Development of the Riverview Parkway Property, which is inclusive of Property 16A and associated mitigation within Las Colinas Channel, would impact a total of 0.37 acre of wetland and non-wetland waters of the State (Table 5), comprising 0.04 acre of wetland waters of the State and 0.32 acre of nonwetland waters of the State. By re-aligning and widening the Las Colinas channel as mitigation for the Riverview Parkway Project, the mitigation will comprise the creation of 0.74 acre of waters of the State and 1.24 acres of riparian habitat. Additionally, 0.08 acre of existing waters of the State that would be temporarily affected by recontouring (will remain within the widened Las Colinas Channel) will also be revegetated and maintained (REC 2023). These impacts would be mitigated through the implementation of mitigation measure BIO-12. Implementation of mitigation measures BIO-3 and BIO-4 would ensure that additional impacts on sensitive resources that occur adjacent to project work limits are avoided.

California Department of Fish and Wildlife Jurisdiction Development of the Riverview Parkway Property, which is inclusive of Property 16A and associated mitigation within the Las Colinas Channel, would impact a total of 1.18 acres of CDFW jurisdictional streambed and riparian areas (Table 5). A total of 0.19 acre of CDFW jurisdictional habitat, comprising southern willow scrub, occurs within Property 16A. By re-aligning and widening the Las Colinas channel as mitigation for the Riverview Parkway Project, the mitigation will comprise the restoration of 1.24 acres of riparian habitat (REC 2023). These impacts would be mitigated through the implementation of mitigation measure BIO-12. Implementation of mitigation measures BIO-3 and BIO-4 would ensure that additional impacts on sensitive resources that occur adjacent to project work limits are avoided.

Properties 16B, 20A, and 20B
Less than Significant with Mitigation.

The proposed Properties 16B, 20A, and 20B would not result in impacts to sensitive natural communities requiring mitigation. The proposed Properties 16B, 20A, and 20B would result in impacts to disturbed habitat and developed land, which are not considered sensitive natural communities. Impacts to nonsensitive vegetation communities are not considered significant and, therefore, do not require mitigation. Implementation of mitigation measures BIO-3 and BIO-4 would ensure that additional 38 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 impacts on sensitive resources that occur adjacent to project work limits are avoided. Additionally, mitigation measure BIO-5 would ensure that temporary impacts to vegetation communities will be revegetated to native habitats following completion of construction activities.

5.3.2 Mitigation Measures
BIO-11 Applications where the City has determined the potential for impacts to jurisdictional waters and wetlands shall be required to comply with the following permitting and mitigation framework.

Before the issuance of any construction permit or any earth-moving activities, a site-specific general biological resources survey (BIO-6) shall be conducted to identify the presence of any sensitive biological resources, including any wetlands. Should any potential jurisdictional waters or wetlands be identified on-site during the general biological resources survey, then a jurisdictional wetlands delineation shall be conducted following the methods outlined in the USACE’s 1987 Wetlands Delineation Manual and the Regional Supplement to the Corps of Engineers Delineation Manual for the Arid West Region or most current USACE guidance. The limits of any riparian habitats on-site under the sole jurisdiction of CDFW shall also be delineated, as well as any special aquatic sites that may not meet federal jurisdictional criteria but are regulated by the RWQCB.

Avoidance measures based on project-level grading and site plans shall be incorporated into the project design to minimize direct impacts to jurisdictional waters consistent with federal, state, and City guidelines. Unavoidable impacts to wetlands shall be minimized to the maximum extent practicable and would be subject to alternatives and mitigation analyses consistent with the USACE’s and RWQCB’s permit processes. Unavoidable impacts would require the project to submit permit applications to the USACE under CWA Section 404, the RWQCB under CWA Section 401 and/or the State Porter-Cologne Water Quality Control Act, and/or the CDFW under CFG Code Sections 1600 et seq., depending on the jurisdictional resources impacted. The permits issued for the project will set the mitigation requirements, which typically require the in-kind creation of new wetland of the same type lost, at a ratio determined by the applicable regulatory agencies that would prevent any net loss of wetland functions and values. (See mitigation measure BIO-12 for the proposed mitigation package for the Riverview Parkway Project.) Wetland creation on-site or within the same wetland system should be given preference over replacement off-site or within a different system. The City shall also control the use and development in surrounding areas of influence to wetlands with the application of buffer zones as may be required for wetlands pursuant to federal and/or state permits in accordance to the Land Use Adjacency Guidelines, conservation measures, and wetland protection standards in the Draft Subarea Plan Chapter 5. Use and development within buffer areas shall be limited to minor passive recreational uses, such as trails, with fencing, desiltation, or erosion control facilities, or other improvements deemed necessary to protect the habitat, to be located in the upper (upland) half of the buffer when feasible. All wetlands and buffers shall be permanently conserved or protected through the application of an open space easement or other suitable device.
39 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 BIO-12 Site 16A would result in impacts to 0.37 acre of wetland and non-wetland waters of the U.S.,

0.37 acre of wetland and non-wetland waters of the State, and 1.18 acres of CDFW Jurisdictional Habitat. By re-aligning and widening the Las Colinas Channel as part of the Riverview Parkway Project, the mitigation will comprise the creation of 0.74 acre waters of the U.S., 0.74 acre waters of the State, and 1.24 acres of riparian habitat. Additionally, 0.08 acre of existing waters of the U.S./State that would be temporarily affected by recontouring (will remain within the widened Las Colinas Channel) will also be revegetated and maintained.

5.3.3 Conclusion
The proposed project would result in significant impacts to sensitive natural communities; however, with the implementation of mitigation measures BIO-3, BIO-4, BIO-5, BIO-6, BIO-11, and BIO-12, impacts on sensitive natural communities would be reduced to less than significant.

5.4 ISSUE 3: JURISDICTIONAL WETLANDS AND WATERWAYS
Would the project have a substantial adverse effect on federally protected wetlands as defined by Section 404 of the federal CWA (including, but not limited to, marsh, vernal pool, coastal, etc.) through direct removal, filling, hydrological interruption, or other means?

5.4.1 Impact Analysis
Less than significant with mitigation. As previously stated in Section 5.3.1, implementation of the Riverview Parkway Project (inclusive of Property 16a) would result in a total of 0.37 acre of wetland and non-wetland waters of the U.S. Impacts to wetland and non-wetland waters of the U.S. would be considered potentially significant.

Impacts to USACE wetland and non-wetland waters, which are anticipated from the Riverview Parkway Project and from other portions of the AEN and TCSP to be determined through site-specific studies, would require the implementation of mitigation measures BIO-6, BIO-11, and BIO-12 above, which require the project to obtain wetland permits through the appropriate wetland permitting agencies and would require the in-kind creation of new wetland of the same type lost, at a ratio determined by the applicable regulatory agencies that would prevent any net loss of wetland functions and values.

Potential indirect impacts on jurisdictional resources would be prevented during construction through the successful implementation of standard BMPs as part of the project’s SWPPP. Implementation of a SWPPP and associated BMPs are a regulatory requirement for the proposed project. Specific BMPs may include but would not necessarily be limited to maintaining the project work areas free of trash and debris; employing appropriate standard spill prevention practices and clean-up materials; installing and maintaining sediment and erosion control measures; maintaining effective control of fugitive dust; and properly storing, handling, and disposing of toxins and pollutants, including waste materials. Mitigation measures BIO-3 and BIO-4 identified for Issue 1 would further ensure that no impacts on adjacent resources occur.

5.4.2 Mitigation Measures
Implementation of required BMPs in combination with mitigation measures BIO-3 and BIO-4 for Issue 1 would ensure that construction activities are contained within the proposed work limits and that potentially significant direct and indirect impacts on jurisdictional resources are avoided. 40 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 Implementation of mitigation measures BIO-6, BIO-11, and BIO-12 would ensure that the project does not have a substantial adverse effect on federally protected wetlands.

5.4.3 Conclusion
The proposed project would result in significant impacts to jurisdictional resources; however, with the implementation of mitigation measures BIO-3, BIO-4, BIO-6, BIO-11, and BIO-12, impacts on federally protected wetlands would be reduced to less than significant.

5.5 ISSUE 4: WILDLIFE MOVEMENT AND NURSERY SITES
Would the project interfere substantially with the movement of any native resident or migratory fish or wildlife species or with established native resident or migratory corridors, or impede the use of native wildlife nursery sites?

5.5.1 Impact Analysis
Less than Significant. Properties 16A, 16B, 20A, and 20B are primarily restricted by developed land.

Although Properties 16A and 16B are bounded, in part, by undeveloped land, they do not meet the criteria for a wildlife movement corridor as they are restricted by roads and other developments.

Additionally, they are not identified as a wildlife movement corridor in the Santee of Santee Draft Subarea Plan.

Future development areas potentially contain areas associated with the San Diego River and its tributaries. While the City of Santee Draft Subarea Plan identifies the San Diego River as a regionally significant wildlife movement corridor, the City of Santee Draft Subarea Plan shows Properties 16A, 16B, 20A, and 20B as well as locations within the TCSP and ACOE sites as being located outside of the Preserve. Retention of the river corridor as Open Space consistent with the TCSP and the implementation of Objective Design Standards related to Bird Friendly Design would ensure no impact to wildlife corridors would occur.

Application of the mitigation measures described in this report to both ministerial and discretionary development projects subject to the TCSP would ensure impacts to wildlife corridors would be reduced or avoided to a level that would be less than significant.

5.5.2 Mitigation Measures
No mitigation is required.

5.5.3 Conclusion
Project implementation would not result in significant impacts on wildlife movement and nursery sites.

No impact would occur, and mitigation is not required.

5.6 ISSUE 5: LOCAL POLICIES AND ORDINANCES
Would the project conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance?
41 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024

5.6.1 Impact Analysis
No Impact. The project would not conflict with an adopted HCP, NCCP, or any other approved local, regional, or state HCP. As noted above, the project area is located within the planning area for the City of Santee Draft Subarea Plan, which has not been adopted. Implementation of BIO-6 and BIO-11 would ensure future development within the project area is consistent with the City of Santee Draft Subarea Plan by requiring site-specific surveys to be conducted for future project-level review to verify the presence of sensitive biological resources occurring on individual sites, determine the extent of any potential impacts, and provide mitigation to reduce the impacts to below a level of significance.

Overall, all future projects (discretionary projects and by-right housing projects as discussed in the City’s Municipal Code Chapter 13.11) would be required to address sensitive species and vegetation communities identified in the City of Santee Draft Subarea Plan and, therefore, impacts associated with conflicts with an adopted HCP, NCCP, or any other approved local, regional, or state HCP would be less than significant.

Additionally, the City’s Municipal Code Chapter 8.06 regulates the planting, maintenance, and removal of public trees, and Chapter 11.38 regulates the obstruction or interference of any natural watercourse or channel. Chapters 13.08 and 13.16 also require development review procedures and standards pertaining to biological resources. Future development, discretionary or by-right, would be subject to the City’s adopted regulations pertaining to trees or natural watercourses. All future projects and residents within the project area would be required to adhere to these policies and regulations; therefore, impacts would be less than significant.

5.6.2 Mitigation Measures
No mitigation is required.

5.6.3 Conclusion
The project would not conflict with local policies or ordinances protecting biological resources.

5.7 ISSUE 6: ADOPTED CONSERVATION PLANS
Would the project conflict with the provisions of an adopted Habitat Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or state habitat conservation plan?

5.7.1 Impact Analysis
No Impact. The project does not propose any activities that would conflict with the San Diego Final MSCP Plan, City of Santee Draft Subarea Plan, local policies, or ordinances protecting biological resources. Future development and operation would be required to implement the mitigation framework, including BIO-5, BIO-6, BIO-7, BIO-8, BIO-9, and BIO-11, as applicable, to ensure impacts associated with biological resources would be reduced to a level that is less than significant. 42 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024

5.7.2 Mitigation Measures
Compliance with existing regulations and the implementation of mitigation measures BIO-5, BIO-6, BIO-7, BIO-8, BIO-9, and BIO-11 would ensure project consistency with the San Diego Final MSCP Plan and the City of Santee Draft Subarea Plan.

5.7.3 Conclusion
The project could result in potential significant impacts to sensitive biological resources addressed under the MSCP; however, compliance with existing regulations and the implementation of measures BIO-6, BIO-7, BIO-8, BIO-9, BIO-11, and BIO-12 would help ensure that impacts are avoided and the project activities are not in conflict with the San Diego Final MSCP Plan or the City of Santee Draft Subarea Plan.

6.0 FEDERAL CONSISTENCY ANALYSIS

FOR BIOLOGICAL RESOURCES ISSUES

6.1 ISSUE 1: FEDERAL ENDANGERED SPECIES ACT, SECTION 7
Does the project involve any direct effects from construction activities, or indirect effects such as growth inducement that may affect federally listed threatened or endangered species or their critical habitat that are known, or have a potential, to occur on-site, in the surrounding area, or in the service area? The project area is situated mainly on disturbed and developed land. The Mission Trails/Kearny Mesa/East Elliot/Santee BRCA, as identified in the Final MSCP Plan, surrounds the northern and western portions of the City and overlaps a small portion of the western project area. The Mission Trails/Kearny Mesa/East Elliot/Santee BRCA is connected to one BRCA to the west by the Vernal Pools, Kearny Mesa, and one BRCA to the east by the Central Poway/San Vicente Reservoir/North Poway BRCA. The proposed project would occur outside of, but adjacent to, the MHPA. Though construction activities may temporarily disrupt local wildlife in the area, wildlife would be expected to move back into the area once construction activities have ceased. Therefore, the project would not constrain wildlife movement through the area and would not result in a significant impact to wildlife corridors or movement.

Coastal California gnatcatcher has a high potential to occur in the project in areas of Diegan coastal sage scrub. If construction activities or operational activities in the TCSP or AEN were to occur during the coastal California gnatcatcher breeding season (March 1 through August 15) and impact occupied coastal California gnatcatcher habitat, the project would directly affect nesting coastal California gnatcatcher. However, the implementation of mitigation measures BIO-6, BIO-7, BIO-8, and BIO-9 would mitigate for impacts to Diegan coastal sage scrub and prevent nesting coastal California gnatcatchers from being directly impacted by clearing of occupied habitat or indirectly impacted by noise. Additionally, mitigation measure BIO-5 would ensure that temporary impacts to vegetation communities, including coastal California gnatcatcher habitat, will be revegetated to native habitats following completion of construction activities. With the implementation of the required mitigation measures, the project may affect, but is not likely to adversely affect, coastal California gnatcatcher.

Take authorization for impacts to Diegan coastal sage scrub would be provided, either through ESA Section 7 consultation if applicable, or the issuance of an HLP or through consistency with the City of Santee Subarea Plan when adopted.
43 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 Least Bell’s vireo has a high potential to occur in the project in areas of riparian vegetation communities.

If construction activities or operational activities in the TCSP or AEN were to occur during the least Bell’s vireo breeding season (March 1 through August 15) and impact occupied least Bell’s vireo habitat, the project would directly affect nesting least Bell’s vireo. However, with the implementation of mitigation measures BIO-6, BIO-7, BIO-8, and BIO-9, the project may affect, but is not likely to adversely affect, least Bell’s vireo. Additionally, mitigation measure BIO-5 would ensure that temporary impacts to vegetation communities will be revegetated to native habitats following the completion of construction activities. Although no take of least Bell’s vireo is anticipated, take authorization could be provided either through ESA Section 7 or 10 as applicable, or through consistency with the City of Santee Subarea Plan when adopted.

Federally Listed Plant Species. No federally listed endangered (FE), threatened (FT), or candidate (FC) plant species are known or have the potential to occur in the vicinity of the project area. Therefore, the project would have no effect on federally listed plant species.

Federally Listed Animal Species. In total, one FE animal species and one FT animal species are known to occur in the vicinity of the project area (Appendix D):
• Least Bell’s vireo; FE
• Coastal California gnatcatcher; FT
Mitigation measures BIO-5 through BIO-9 include site protection and biological monitoring measures that would ensure that no adverse effect on these species occurs.

6.1.1 Mitigation Measures
With the implementation of Mitigation measures BIO-5 through BIO-9, the proposed action would have no adverse effect on federally listed species or their critical habitat, and the project would be in conformance with the FESA.

6.1.2 Conclusion
If unmitigated, project implementation may affect coastal California gnatcatcher and least Bell’s vireo; however, implementation of mitigation measures BIO-5 through BIO-9 would ensure that the project would not adversely affect federally listed species.

6.2 ISSUE 2: MAGNUSON-STEVENS FISHERY CONSERVATION AND

MANAGEMENT ACT, ESSENTIAL FISH HABITAT
Does the project involve any direct effects from construction activities, or indirect effects such as growth inducement that may adversely affect essential fish habitat? The project would be constructed within areas that lack marine resources and Essential Fish Habitat regulated under the Magnuson-Stevens Fishery Conservation and Management Act. No Essential Fish Habitat occurs in the immediate vicinity of the project area. Therefore, the project would have no effect on Essential Fish Habitat and would be in conformance with the Magnuson-Stevens Fishery Conservation and Management Act.
44 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024

6.2.1 Mitigation Measures
No mitigation is required.

6.2.2 Conclusion
The project would have no direct or indirect effect on essential fish habitat.

6.3 ISSUE 3: COASTAL ZONE MANAGEMENT ACT
Is any portion of the project site located within the coastal zone? The project area is not located within the coastal zone and does not require Coastal Zone Management Act consistency and CDP issuance.

6.3.1 Mitigation Measures
No mitigation is required.

6.3.2 Conclusion
The project would have no direct or indirect effect on areas designated as Coastal Zone.

6.4 ISSUE 4: MIGRATORY BIRD TREATY ACT
Will the project affect protected migratory birds that are known, or have a potential, to occur on-site, in the surrounding area, or in the service area?
Construction of the proposed project may result in the removal or trimming of trees and other vegetation during the general bird nesting season (January 15 through September 15) and, therefore, would have the potential to adversely affect nesting birds protected under the MBTA. Implementation of mitigation measures BIO-7, BIO-8, and BIO-9 would ensure the appropriate pre-construction surveys and avoidance measures are completed to prevent adverse effects on nesting birds. With the implementation of mitigation measures BIO-7, BIO-8, and BIO-9, the project would result in no effect on migratory birds and would be in conformance with the MBTA.

6.5 ISSUE 5: PROTECTION OF WETLANDS
Does any portion of the project boundaries contain areas that should be evaluated for wetland delineation or require a permit from the United States Army Corps of Engineers? Impacts from future development in the TCSP or AEN would be reduced to a less than significant level through the implementation of mitigation measure BIO-11, which requires the project to obtain wetland permits through the appropriate wetland permitting agencies and would require the in-kind creation of new wetland of the same type lost, at a ratio determined by the applicable regulatory agencies that would prevent any net loss of wetland functions and values. 45 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 Impacts from the Riverview Parkway Project (inclusive of Property 16A) would be reduced to a less than significant level through the implementation of mitigation measure BIO-12, which requires re-aligning and widening the Las Colinas channel, resulting in the creation of 0.74 acre waters of the U.S., 0.74 acre of waters of the State, and 1.24 acres of riparian habitat. Additionally, 0.08 acre of existing waters of the U.S. that would be temporarily affected by recontouring (will remain within the widened Las Colinas Channel) will also be revegetated and maintained.

6.6 ISSUE 6: WILD AND SCENIC RIVER ACT
Is any portion of the project located within a wild and scenic river? None of the proposed project components are planned on or in the immediate vicinity of areas designated as Wild and Scenic River. Therefore, the proposed project would have no effect on any areas designated as Wild and Scenic River and would be in conformance with the Wild and Scenic Rivers Act. 46 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024

7.0 REFERENCES
American Ornithological Society (AOS). 2023. AOU Checklist of North and Middle American Birds (online checklist). Retrieved from: http://checklist.aou.org/taxa/.

Baldwin, B.G., D.H. Goldman, D.J. Keil, R. Patterson, T.J. Rosatti, and D.H. Wilken, editors. 2012. The Jepson Manual: Vascular Plants of California, second edition. University of California Press, Berkeley.

Beauchamp, R. M. 1986. A Flora of San Diego County. Sweetwater River Press, 241 pp.

Bradley, R.D., Ammerman, L.K., Baker, R.J., Bradley, L.C., Cook, J.A., Dowler, R.D. Jones, C., Schmidly, D.J, Stangi, F.B., Van De Bussche, R.A., Wursig, B. (2014). Revised checklist of North American mammals north of Mexico. Museum of Texas Tech University Occasional Papers. 327:1-27.

California Department of Fish and Wildlife (CDFW). 2023a. California Natural Diversity Data Base (CNDDB). RareFind Database Program, Version 5. Updated monthly. 2023b.California Natural Diversity Database (CNDDB). Special Vascular Plants, Bryophytes, and Lichens List. March. Retrieved from:
https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=109383&inline. 2023c. California Natural Diversity Database (CNDDB). Special Animal List. November. Retrieved from: https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=109406&inline.

California Native Plant Society (CNPS). 2023. Inventory of Rare and Endangered Plants (online edition, v8-03 0.39). Rare Plant Program. California Native Plant Society, Sacramento, CA. Retrieved from: http://www.rareplants.cnps.org/.

Dudek. 2024. Cottonwood and Park Project. Biological Technical Report. June.

Holland, R.F. 1986. Preliminary Descriptions of the Terrestrial Natural Communities of California. State of California, The Resources Agency, 156 pp.

Jepson Flora Project (eds.) 2023. Jepson eFlora. Retrieved from: http://ucjeps.berkeley.edu/eflora/.

Accessed 2023.

Oberbauer, T., M. Kelly, and J. Buegge. 2008. Draft Vegetation Communities of San Diego County. Based on "Preliminary Descriptions of the Terrestrial Natural Communities of California," R. F. Holland, Ph.D., October 1986. March. Revised from 1996 and 2005. July.

REC Consultants, Inc. 2023. Draft Restoration/Revegetation Plan for the Riverview Parkway Project.

April.
2022a. Riverview Parkway Project USACE Aquatic Resources Delineation Report. January. 2022b. Riverview Parkway Project CDFW Jurisdictional Delineation Report. February.

San Diego, County of. 1998. Final Multiple Species Conservation Program, MSCP Plan. August. 47 DRAFT Biological Technical Report for the Santee Town Center Specific Plan Amendment | August 2024 Santee, City of. 2006. Santee Town Center Specific Plan Amendment. Final Master Environmental Impact Report. January.

Society for the Study of Amphibians and Reptiles (SSAR). 2023. North American Standard English and Scientific Names Database. Retrieved from: https://ssarherps.org/cndb/.

U.S. Fish and Wildlife Service (USFWS). 2023. Occurrence Information for Multiple Species within Jurisdiction of the Carlsbad Fish and Wildlife Office (CFWO). Retrieved from:
https://www.fws.gov/office/carlsbad-fish-and-wildlife/species. July 1. 48 Appendix A
Plant Species Observed
Appendix A: Plant Species Observed for the Santee Town Center Specific Plan Amendment A-1
Family Scientific Name*,† Common Name Habitat1
Dicots
Adoxaceae Sambucus nigra ssp. caerulea blue elderberry SAWRF Anacardiaceae Malosma laurina laurel sumac DCSS
Rhus integrifolia lemonade berry DCSS
Schinus terebinthifolius* Brazilian pepper tree SRS
Apiaceae Foeniculum vulgare* fennel NNG
Asteraceae Ambrosia acanthicarpa annual bur-sage NNG
Artemisia californica California sagebrush DCSS
Artemisia douglasiana California mugwort SAWRF
Baccharis pilularis coyote brush DCSS
Baccharis sarothroides broom baccharis AS, DCSS, DCSS-D Baccharis salicifolia mule fat SRS
Carduus pycnocephalus* Italian thistle DH
Centaurea melitensis* star thistle NNG, SRS
Centromadia pungens spp. laevis† smooth tarplant NNG
Dittrichia graveolens* stinkwort DCSS-D, NNG
Heterotheca grandiflora telegraph weed DCSS-D, NNG
Isocoma menziesii goldenbush DCSS, DCSS-D DH, NNG
Iva hayesiana† San Diego marsh-elder DCSS
Lactuca serriola* prickly lettuce SRS
Pluchea sericea arrow weed AS
Brassicaceae Hirschfeldia incana* short-podded mustard DCSS-D, DH Cactaceae Cylindropuntia prolifera coast cholla SRS
Opuntia littoralis coast prickly pear SRS
Chenopodiaceae Atriplex sp. saltbush SRS
Salsola tragus* tumbleweed DH
Cucurbitaceae Cucurbita foetidissima calabazilla NNG, SRS Euphorbiaceae Croton californicus California croton NNG Croton setigerus dove weed NNG
Ricinus communis* castor bean AS
Fagaceae Quercus agrifolia coast live oak SAWRF
Lamiaceae Salvia apiana white sage DCSS
Salvia mellifera black sage DCSS
Myrtaceae Eucalyptus sp.* eucalyptus SRS
Onagraceae Camissoniopsis sp. sun cup NNG
Oenothera elata evening primrose SRS
Platanaceae Platanus racemosa Californica sycamore SAWRF Polygonaceae Eriogonum fasciculatum California buckwheat DCSS, DCSS-D Rosaceae Heteromeles arbutifolia toyon DCSS
Salicaceae Populus fremontii western cottonwood SAWRF
Salix gooddingii black willow SAWRF
Salix laevigata red willow SAWRF
Salix lasiolepis arroyo willow SAWRF
Solanaceae Nicotiana glauca* tree tobacco SRS
Tamaricaceae Tamarix ramosissima* tamarisk SRS
Vitaceae Vitis girdiana wild grape SAWRF
Appendix A: Plant Species Observed for the Santee Town Center Specific Plan Amendment A-2
Family Scientific Name*,† Common Name Habitat1
Monocots
Agavaceae Agave sp.* agave DCSS
Arecaceae Washingtonia robusta* Mexican fan palm DH, SAWRF Cyperaceae Schoenoplectus californicus California bulrush SAWRF Juncaceae Juncus acutus spp. leopoldii† spiny rush DH
Poaceae Avena barbata* wild oat NNG
Bromus diandrus* ripgut brome NNG
Bromus hordeaceus* soft chess NNG
Bromus madritensis ssp. rubens* foxtail brome NNG, SRS
Cortaderia selloana* pampas grass SRF
Elymus condensatus giant wild-rye DCSS, SAWRF
Typhaceae Typha sp. cattail SAWRF * Non-native † Sensitive 1 AS=arrow weed scrub; DCSS=Diegan coastal sage scrub; DCSS-D=Diegan coastal sage scrub-disturbed; DH=Disturbed habitat; NNG= Nonnative grassland; SAWRF=Southern arroyo willow riparian forest; SRS=Southern riparian scrub.

Appendix B
Animal Species Observed or
Detected
Appendix B: Animal Species Observed or Detected for the Santee Town Center Specific Plan Amendment B-1
Taxon Order Taxon Family Scientific Name Common Name

INVERTEBRATES
Hymenoptera Apidae Apis sp. honey bee
Lepidoptera Papilionidae Papilio rutulus western tiger swallowtail Pieridae Pieris sp. white
Pieridae Phoebis sp. sulphur

VERTEBRATES
Amphibians and Reptiles
Squamata Phrynosomatidae Sceloporus occidentalis longipes great basin fence lizard Uta stansburiana side-blotched lizard
Birds
Accipitriformes Accipitridae Buteo lineatus red-shouldered hawk Passeriformes Aegithalidae Psaltriparus minimus bushtit Fringillidae Haemorhous mexicanus house finch
Fringillidae Spinus psaltria lesser goldfinch
Icteridae Icterus cucullatus hooded oriole
Passerellidae Pipilo maculatus spotted towhee
Mammals
Lagomorpha Leporidae Sylvilagus audubonii desert cottontail Rodentia Sciuridae Otospermophilus beecheyi California ground squirrel Appendix C
Special-Status Plant Species Potential
to Occur
Appendix C: Special-Status Plant Species Potential to Occur for the Santee Town Center Specific Plan Amendment C-1
Scientific Name Common Name Status Habitat, Ecology and Life History Potential to Occur Acanthomintha ilicifolia San Diego thornmint FT/CE
CRPR 1B.1
Annual herb. Typically found on clay
soils within chaparral, coastal scrub,
valley and foothill grassland, and vernal
pools. Flowering period: April to June.

Elevation: below 3150 feet (960
meters).

None. Suitable clay soils are
absent from the project area.

The closest records of the
species are located over 3.7
miles north of the site
approximately 0.5-mile to the
west of Highway 67 (CNDDB
2022).

Adolphia californica California adolphia --/--
CRPR 2B.1
Perennial shrub. Most often found in
sage scrub but occasionally occurs in
peripheral chaparral habitats,
particularly hillsides near creeks on clay
soils. Flowering period: December to
April. Elevation: below 1,312 feet (400
meters).

Low. Very little sage scrub
occurs on site and clay soils are
absent. This perennial shrub
was not observed on site during
the biological survey.

Ambrosia monogyra Singlewhorl burrobrush --/--
CRPR 2B.2
Perennial shrub. Found on sandy soils
within washes and dry riverbeds within
chaparral communities. Flowering
period: September to November.

Elevation: below 1,640 feet (500
meters).

Low. The project area occurs
east of this species known
range. This perennial shrub was
not observed on site during the
biological survey.

Ambrosia pumila San Diego ambrosia FE/--
CRPR 1B.1
Perennial herb. Occurs on sandy loam
or clay, sometimes alkaline, soils.

Found in native grassland, valley
bottoms, dry drainages, stream
floodplain terraces, and vernal pool
margins. Also occurs on slopes,
disturbed places, and in coastal sage
scrub or chaparral. Flowering period:

April to July. Elevation: 164 to 1,969
feet (50 to 600 meters).

Low. Suitable habitat for this
species occurs along the San
Diego River within the project
area. A 1936 observation is
generally noted in a location
approximately 0.5-mile north of
Santee in areas that have been
disturbed or developed.

Repeated surveys within
suitable habitat in the general
area were negative in 1996,
1998, 2005, and 2006.

Appendix C: Special-Status Plant Species Potential to Occur for the Santee Town Center Specific Plan Amendment C-2
Scientific Name Common Name Status Habitat, Ecology and Life History Potential to Occur Arctostaphylos otayensis Otay manzanita --/--
CRPR 1B.2
Perennial shrub. Found in chaparral and
cismontane woodland on
metavolcanics soils. Flowering period:

January to April. Elevation: 900 to 5,580
feet (275 to 1,700 meters).

None. Suitable soils and habitat
are absent from the project
area. The site is located below
the elevation range for the
species.

Artemisia palmeri San Diego sagewort --/--
CRPR 4.2
Perennial herb. Typically found along
stream courses, often beneath riparian
woodland, on sandy and mesic soils.

May occur in coast live oak woodland,
coastal sage scrub, and southern mixed
chaparral. Flowering period: June to
October. Elevation: below 1,969 feet
(600 meters).

Moderate. Suitable habitat
along the San Diego River,
including sandy and mesic soils,
occur in the project area.

Nearest observation occurs 4.6
miles east in Crestwood
Ecological Reserve (CNDDB
2022)
Bloomeria clevelandii San Diego goldenstar --/--
CRPR 1B.1
Perennial bulbiferous herb. Occurs in
valley grasslands and coastal scrub,
particularly near mima mound
topography or in the vicinity of vernal
pools, on clay soils. Flowering period:

April to May. Elevation: 164 to 1,526
(50 to 465 meters).

Low. Limited suitable coastal
sage scrub habitat occurs on
site, but the site lacks suitable
clay soils. A population was
documented in the project area
east of Cuyamaca Street and
south of Mast Boulevard in
1983, but the area has since
been developed.

Centromadia pungens
ssp. laevis
Smooth tarplant --/--
CRPR 1B.1
Annual herb. Occurs on alkaline soils in
chenopod scrub, meadows and seeps,
playas, riparian woodland, and valley
and foothill grassland. Flowering
Period: April to September. Elevation:
below 2,100 feet (640 meters).

Present. Approximately 243
individuals were observed in
disturbed areas of disturbed
habitat or in Diegan coastal
sage scrub habitat to the south
of the San Diego River. All
observations occur within the
Arts and Entertainment District
Overlay, and approximately 110
individuals occur within
Property 16A.

Appendix C: Special-Status Plant Species Potential to Occur for the Santee Town Center Specific Plan Amendment C-3
Scientific Name Common Name Status Habitat, Ecology and Life History Potential to Occur Dudleya variegata Variegated dudleya --/--
CRPR 1B.2
Perennial herb succulent. Occurs on
clay soils of dry hillsides and mesas
within chaparral, valley grassland,
foothill woodland and coastal sage
scrub communities. Flowering period:

April to June. Elevation: below 984 feet
(300 meters).

Low. Suitable habitat on site
limited to coastal sage scrub in
occurring within disturbed
undeveloped areas. However,
clay soils are absent from the
project site. Furthermore, the
nearest occurrence of the
species is approximately 16
miles west within Mission Trails
Regional Park (CNDDB 2022).

Ferocactus viridescens San Diego barrel cactus --/--
CRPR 2B.1
Perennial (stem succulent) shrub.

Grows in sandy to rocky areas within
chaparral, valley grassland and coastal
sage scrub communities. Flowering
period: May to June. Elevation: 33 to
492 feet (10 to 150 meters).

Presumed Absent. Suitable
habitat on site limited to
remnant patches of coastal sage
scrub in disturbed undeveloped
areas. However, this
conspicuous perennial species
would have been observed if
present.

Harpagonella palmeri Palmer's grapplinghook --/--
CRPR 4.2
Annual herb. Found in clay soils in
annual grasslands and coastal sage
scrub. Flowering Period: March to May.

Elevation: 65 to 3,100 feet (20 to 955
meters).

Low. Suitable habitat on site
limited to coastal sage scrub
pockets within disturbed
undeveloped areas. However,
clay soils are absent from the
project site. This species was
observed in the northern
portion of the City of Santee
west of Trenchard Street in
1994, but portions of this area
have since been developed
(CNDDB 2022).

Appendix C: Special-Status Plant Species Potential to Occur for the Santee Town Center Specific Plan Amendment C-4
Scientific Name Common Name Status Habitat, Ecology and Life History Potential to Occur Isocoma menziesii var.
decumbens
Decumbent goldenbush --/--
CRPR 1B.2
Perennial shrub. Occurs in sandy soil
and disturbed areas on the inland side
of dunes, hillsides, and arroyos within
coastal sage scrub and chaparral
communities. Flowering period: July to
November. Elevation: below 656 feet
(200 meters).

Moderate. Suitable habitat on
site is limited to remnant
patches of coastal sage scrub
within disturbed undeveloped
lands. Few recent records of the
species are present within the
project vicinity. This perennial
shrub would most likely have
been observed if present.

Iva hayesiana San Diego marsh-elder --/--
CRPR 2B.2
Perennial herb. Found in alkaline flats,
depressions, and streambanks within
wetland communities. Flowering
period: April to October. Elevation: 32
to 1,640 feet (10 to 500 meters).

Present. Two individuals were
observed during the 2023
survey at the intersection of
Riverwalk Drive and Park Center
Drive in Southern Riparian
Forest Habitat.

Juncus acutus ssp.
leopoldii
Southwestern spiny rush --/--
CRPR 4.2
Perennial herb. Found in moist saline
environments such as alkaline seeps
and meadows, and coastal salt marshes
and swamps. Flowering period: May to
June. Elevation: below 984 feet (300
meters).

Present. One individual occurs
within the TCSP on conserved
land designated as Park/Open
Space along an unnamed
tributary to the San Diego River.

A second individual occurs
within the TCSP outside
conserved lands at the southern
terminus of Park Center Drive.

Appendix C: Special-Status Plant Species Potential to Occur for the Santee Town Center Specific Plan Amendment C-5
Scientific Name Common Name Status Habitat, Ecology and Life History Potential to Occur Monardella viminea Willowy monardella FE/SE
CRPR 1B.1
Perennial herb. Occurs on alluvial
ephemeral washes in chaparral, coastal
sage scrub, riparian forest, riparian
scrub, and riparian woodland.

Flowering period June – August.

Elevation: 164-738 feet (50-225
meters).

Low. Some suitable alluvial
ephemeral wash habitat may
occur along the San Diego River,
but the species is not known to
occur within the project vicinity.

Pogogyne nudiuscula Otay mesa mint FE/SE
CRPR 1B.1
Annual herb. Grows in vernal pools of
San Diego County. Flowering period:

May to July. Elevation: 295 to 820 feet
(90 to 820 meters).

None. Suitable vernal pool
habitat is absent from the
project area. No records of the
species occur within the project
vicinity.

Pseudognaphalium
leucocephalum
White rabbit-tobacco --/--
CRPR 2B.2
Perennial herb. Occurs on sandy or
gravelly soils of benches, dry stream
bottoms, and canyon bottoms within
coastal scrub, chaparral, cismontane
woodland, and riparian woodland.

Flowering period: July to November.

Elevation: below 6,890 feet (2,100
meters).

High. Though potentially
suitable habitat occurs on site
along the San Diego River, the
site has been highly disturbed
by adjacent development. This
species was documented in
2011 on the south side of the
San Diego River adjacent to the
intersection of Magnolia
Avenue and Cottonwood
Avenue (CNDDB 2022).

Quercus cedrosensis Cedros Island oak --/--
CRPR 2B.2
Perennial tree. Occurs within closedcone coniferous forest, chaparral, and coastal scrub of San Diego County.

Flowering period: April to May.

Elevation: 835 to 3,150 feet (255 to 960
meters).

Presumed Absent. This
conspicuous perennial tree
would most likely have been
observed if present. The area
occurs below the elevation
range for this species.

Quercus dumosa Nuttall’s scrub oak --/--
CRPR 1B.1
Perennial shrub. Occurs on sandy or
clay loam soils near the coast within
coastal scrub, chaparral, cismontane
woodland, and riparian woodland.

Flowering period: March to May.

Elevation: below 656 feet (200 meters).

Presumed Absent. Suitable
habitat on site limited to
remnant patches of coastal sage
scrub within disturbed
undeveloped lands. However,
this conspicuous perennial
species would have been
observed if present.

Appendix C: Special-Status Plant Species Potential to Occur for the Santee Town Center Specific Plan Amendment C-6
Scientific Name Common Name Status Habitat, Ecology and Life History Potential to Occur Quercus engelmannii Engelmann oak --/--
CRPR 4.2
Perennial tree. Occurs on slopes and
foothills within grasslands, chaparral,
oak woodland, and riparian woodlands.

Flowering period: March to June.

Elevation: 160 to 4,300 feet (50 to
1,300 meters).

Presumed Absent. This
conspicuous perennial tree
would have been observed if
present. No records of the
species occur within the project
vicinity and are generally
located further east or south of
the area in higher elevation
areas.

Romneya coulteri Coulter's matilija poppy --/--
CRPR 4.2
Perennial herb. Occurs in dry washes
and canyons coastal scrub chaparral.

Often in burned areas. Flowering
period: March to August. Elevation: 65
to 3,900 feet (20 to 1,200 meters).

Presumed Absent. Suitable
habitat on site limited to
remnant patches of coastal sage
scrub within disturbed
undeveloped lands. However,
no records of the species occur
within the project vicinity. This
conspicuous perennial species
would have been observed if
present.

Salvia munzii Munz's sage --/--
CRPR 2B.2
Perennial shrub. Occurs within
chaparral and coastal scrub of San
Diego County. Flowering period:

February to April. Elevation: 370 and
3,500 feet (115 to 1,065 meters).

Presumed Absent. Suitable
coastal sage scrub habitat on
site but this conspicuous
species would have been
observed if present.

Documented occurrences of the
species are located further
southwest of the area within
Otay Mesa.

Selaginella cinerascens Ashy spike-moss --/--
CRPR 4.1
Fern. Grows in sunny spots or under
shrubs within coastal sage scrub and
chaparral. Often associated with “red
clay” soils. Elevation: below 1,804 feet
(550 meters).

Low. Suitable habitat on site
limited to remnant patches of
coastal sage scrub within
disturbed undeveloped lands.

However, no records of the
species occur within the project
vicinity.

Appendix C: Special-Status Plant Species Potential to Occur for the Santee Town Center Specific Plan Amendment C-7
Scientific Name Common Name Status Habitat, Ecology and Life History Potential to Occur Xanthisma junceum rush-like bristleweed --/--
CRPR 4.3
Perennial herb. Grows on dry hillsides
within coastal sage scrub and chaparral.

Flowering period: May to January.

Elevation: 785 to 3,280 feet (240 to
1,000 meters).

Moderate. Suitable habitat on
site is limited to remnant
patches of coastal sage scrub
within disturbed undeveloped
lands. This perennial plant
would most likely have been
observed if present. 1 Listing is as follows: F = Federal; S = State of California; E = Endangered; T = Threatened; R = Rare 2 CNPS = California Native Plant Society Rare Plant Rank: 1A–presumed extirpated in California and either rare or extinct elsewhere; 1B–rare, threatened, or endangered in California and elsewhere; 2A–presumed extirpated in California, but more common elsewhere; 2B–rare, threatened, or endangered in California, but more common elsewhere; 3–more information needed; 4–watch list for species of limited distribution. Extension codes: .1–seriously endangered; .2–moderately endangered; .3–not very endangered.

Not Likely to Occur–There are no present or historical records of the species occurring on or in the immediate vicinity, (within 3 miles) of the Project Site and the diagnostic habitats strongly associated with the species do not occur on or in the immediate vicinity of the Site.

Low Potential to Occur–There is a historical record of the species in the vicinity of the Project Site and potentially suitable habitat on Site, but existing conditions, such as density of cover, prevalence of non-native species, evidence of disturbance, limited habitat area, isolation, substantially reduce the possibility that the species may occur. The Site is above or below the recognized elevation limits for this species.

Moderate Potential to Occur–The diagnostic habitats associated with the species occur on or in the immediate vicinity of the Project Site, but there is not a recorded occurrence of the species within the immediate vicinity (within 3 miles). Some species that contain extremely limited distributions may be considered moderate, even if there is a recorded occurrence in the immediate vicinity.

High Potential to Occur–There is both suitable habitat associated with the species and a historical record of the species on or in the immediate vicinity of the Project Site (within 3 miles).

Species Present–The species was observed on the Project Site at the time of the survey or during a previous biological survey Appendix D
Special-Status Animal Species
Potential to Occur
Appendix D: Special-Status Animal Species Potential to Occur for the Santee Town Center Specific Plan Amendment D-1
Scientific Name Common Name Status Habitat Associations Potential to Occur

INVERTEBRATES
Insects
Bombus crotchii Crotch bumble bee --/SCE
Found throughout southwestern California
from the Central Valley south to the
U.S./Mexico border. Inhabits open
grasslands and scrub habitats. Primarily
nests underground and forages on a wide
variety of flowers, but a short tongue
renders it best suited to open flowers with
short corollas. Most commonly observed on
flowering species in the Fabaceae,
Asteraceae, and Lamiaceae families.

Occurrence has also been linked to habitats
containing Asclepias, Chaenactis, Lupinus,
Medicago, Phacelia, and Salvia genera.

Moderate. This species was not
observed during the 2023 HELIX
survey. While some suitable
open grassland and scrub
habitat occurs within the project
area, these areas are highly
disturbed, and no suitable
burrows were observed during
the survey.

Branchinecta
sandiegonensis
San Diego fairy shrimp FE/-- Restricted to vernal pools and other ephemeral basins in southern California
from coastal Orange County to San Diego
County. Found in seasonally astatic pools
which occur in tectonic swales or earth
slump basins and other areas of shallow,
standing water often in patches of
grassland and agriculture interspersed in
coastal sage scrub and chaparral.

None. No vernal pools or other
suitable habitat to support the
species is present within the
project area. The closest
reported occurrence of the
species is located over 1.5 miles
west of the site, to the west of
the Santee Lakes partially in
areas that have been developed.

Danaus plexippus Monarch butterfly FC/-- The population west of the Rocky Mountains migrates to, and overwinters,
along the coast of central and southern
California. Inhabits a wide variety of open
habitats including fields, meadows,
marshes, and roadsides and roosting on
wind-protected tree groves (such as
eucalyptus [Eucalyptus spp.], Monterey
pine [Pinus radiata], cypress
[Hesperocyparis sp.]), with nectar and
water sources nearby. Breeds in areas that
have a suitable abundance of their host
plant, milkweed (Asclepias sp.).

Low. The species has potential
to travel through and potentially
breed in the study area where
its host plant is present, but
there are no significant
overwintering populations
known to occur in the project
area.

Appendix D: Special-Status Animal Species Potential to Occur for the Santee Town Center Specific Plan Amendment D-2
Scientific Name Common Name Status Habitat Associations Potential to Occur Euphydryas editha quino Quino checkerspot
butterfly
FE/-- Occurs in California from western Riverside
County southwards to southern San Diego
County. Inhabits open and sparsely
vegetated areas that contain larval host
plant species (principally dot-seed plantain
[Plantago erecta], woolly plantain
[Plantago patagonia] but also Coulter’s
snapdragon [Antirrhinum coulterianum],
and rigid bird’s beak [Cordylanthus rigidus])
and nectar sources. Often found on
rounded hilltops, ridgelines, and
occasionally rocky outcrops. Occurs within
a wide range of open-canopied habitats
including vernal pools, sage scrub,
chaparral, grassland, and open oak and
juniper woodland communities.

Low. The project area contains
suitable sparsely vegetated
disturbed sage scrub habitat and
there are documented
occurrences approximately 2.5
miles north on undeveloped
lands in northern City of Santee.

Additionally, the project area
occurs outside the USFWS
Recommended QCB Survey
Area.

Lycaena hermes Hermes copper butterfly FT/-- Found in coastal sage scrub and southern mixed chaparral habitats with mature
specimens of its larval host plant, spiny
redberry (Rhamnus crocea). This species
appears to utilize redberry stands growing
in deeper, well drained soils of canyon
bottoms and north-facing hillsides.

Nectaring resources include California
buckwheat (Eriogonum fasciculatum),
chamise (Adenostoma fasciculatum), and
California sunflower (Encelia californica),
among others.

None. The species host plant,
redberry, does not occur within
the project area. Potentially
suitable habitat for the species
occurs to the west of the site
within Mission Trails Regional
Park and other open space
areas.

VERTEBRATES
Amphibians and Reptiles
Actinemys pallida Southwestern pond turtle --/SSC Found in California from the central coast south of the San Francisco Bay area to San
Diego County, including the Mojave River.

Habitat generalist that occurs within many
types of water from freshwater to brackish
environments and permanent to
intermittent waterbodies. Inhabit creeks,
Low. Suitable slow moving
rivers, marshes, ponds, lakes,
reservoirs, vernal pools, canals
do not occur in the project area.

No records of the species occur
within the project area and the
closest location is 1.5 miles
Appendix D: Special-Status Animal Species Potential to Occur for the Santee Town Center Specific Plan Amendment D-3
Scientific Name Common Name Status Habitat Associations Potential to Occur slow moving rivers, marshes, ponds, lakes,
reservoirs, vernal pools, canals and even
sewage treatment plants. Prefers habitats
with slow flowing water particularly where
basking sites (such as rocks, downed logs,
or emergent vegetation), deep water
retreats, and egg laying areas are readily
available.
northeast at the northern
boundary of the Santee Lakes.

Anaxyrus californicus Arroyo toad FE/SSC Inhabits low gradient, medium to large streams and rivers with intermittent and
perennial flow in coastal and desert
drainages of central and southern
California. Breeding habitat specialists that
require slow-moving streams composed of
sandy soils with sandy streamside
terraces. May occupy first-order streams,
though most populations inhabit secondsixth-order streams that have extensive braided channels and sediment deposits of
sand, gravel, or pebbles that are
redistributed by flooding. Utilizes shallow
pools (at least 1-inch deep) for breeding,
egg-laying, and tadpole development.

Vulnerable to habitat destruction and
alteration due to changes in hydrology,
including construction of dams and water
diversions. Impacted by the presence of
non-native predators such as American
bullfrog (Lithobates catesbeianus).

Low. Though San Diego River is
within the historical range of the
species and potentially suitable
habitat is present in the project
area, the suitable habitat onsite
has been significantly degraded
due to adjacent of surrounding
development. Potentially
suitable habitat for this species
occurs southeast of the project
area along the Sweetwater
River.

Anniella stebbinsi San Diegan legless lizard --/SSC Occurs in sparsely vegetated areas with moist warm, loose soil with plant cover;
moisture is essential. Common in several
habitats but especially in beach dunes,
coastal scrub, chaparral, pine-oak
woodlands, desert scrub, sandy washes,
and stream terraces with sycamores,
cottonwoods, or oaks. Found primarily in
High. Potentially suitable habitat
occurs along the San Diego
River. However, the site has
been heavily degraded by
surrounding development. The
species is reported to occur 0.3
mile west of the site along in
Mast Park.

Appendix D: Special-Status Animal Species Potential to Occur for the Santee Town Center Specific Plan Amendment D-4
Scientific Name Common Name Status Habitat Associations Potential to Occur areas with sandy or loose organic soils or
where there is plenty of leaf litter.

Sometimes found in suburban gardens in
southern California.

Arizona elegans
occidentalis
California glossy snake --/SSC Occurs in arid scrub, rocky washes, grasslands, and chaparral. Prefers open
areas and loose soil.

High. Suitable habitat and rocky
washes occur within the study
areas and there are
documented occurrences,
including historical
observations, within the vicinity.

Lack of more sightings is mostly
attributed to the lack of focused
surveys and the species
secretive nature.

Aspidoscelis hyperythra
beldingi
Belding’s orange-throated
whiptail
--/WL Found within the southwestern portion of
California in southern San Bernardino,
western Riverside, Orange, and San Diego
Counties on the western slopes of the
Peninsular ranges below 3,500 feet.

Suitable habitat includes coastal sage scrub,
chaparral, juniper woodland, oak
woodland, and grasslands along with
alluvial fan scrub and riparian areas.

Occurrence of the species correlated with
the presence perennial plants (such as
California buckwheat, California sagebrush,
black sage, or chaparral) to provide a food
base for its major food source, termites.

High. Suitable habitat occurs
within the project area and
there are documented
occurrences, including historical
observations, within the vicinity.

Aspidoscelis tigris
stejnegeri
San Diegan tiger whiptail --/SSC Occurs along the coastal region of southern California from San Luis Obispo south to
San Diego County. Inhabits a wide variety of
habitats, primarily in hot and dry open
areas with sparse vegetation, from sea level
to 4,900 feet. Associated habitats include
coastal sage scrub, chaparral, riparian
areas, woodlands, and rocky areas with
sandy or gravel substrates.

High. Suitable habitat occurs
within the project area and
there are documented
occurrences, including historical
observations, in the project area
and within the vicinity.

Appendix D: Special-Status Animal Species Potential to Occur for the Santee Town Center Specific Plan Amendment D-5
Scientific Name Common Name Status Habitat Associations Potential to Occur Crotalus ruber Red diamond rattlesnake --/SSC Occurs in southwestern portion of California from San Bernardino County
southward to San Diego County at
elevations below 5,000 feet. Has a wide
tolerance for varying environments
including the desert, dense foothill
chaparral, warm inland mesas and valleys,
and cool coastal zones. Most commonly
found near heavy brush with large rocky
microhabitats. Chamise and red shank
chaparral associations may offer better
structural habitat for refuges and food
resources.

High. Suitable habitat occurs
within the project area and
there are documented
occurrences, including historical
observations, in the project area
and within the vicinity.

Phrynosoma blainvillii Blainville’s horned lizard --/SSC Occurs from southern California to northern Baja California. In California, the
species predominately occurs from Kern
County south to San Diego County west of
the desert at elevations below 8,000 feet.

Inhabits a wide variety of vegetation types
including sagebrush scrub, chaparral,
grasslands, forests, and woodlands but is
restricted to areas with suitable sandy,
loose soils with open areas for basking. Diet
primarily composed of native harvester
ants (Pogonmyrmex sp.) and are generally
excluded from areas invaded by Argentine
ants (Linepithema humile).

High. Suitable habitat occurs
within the project area and
there are documented
occurrences, including historical
observations, within the vicinity.

The species is reported to occur

0.3 mile west of the site along in
Mast Park.

Plestiodon skiltonianus
interparietalis
Coronado skink --/WL Occurs from in coastal and inland portions of southern San Diego County, though can
occur up into Riverside County where it
intergrades with Skilton’s skink (Plestiodon
skiltonianus skiltonianus). Suitable habitats
include grassland, woodlands, pine forests,
and chaparral, especially in open sunny
areas such as clearings and edges of creeks
or rivers. Prefers rocky areas near streams
with lots of vegetation but can also be
Low. Potentially suitable coastal
sage scrub and riparian habitats
occur within the project site but
lacks rocky areas associated
with the species. The project
area has also been heavily
disturbed by surrounding
development.

Appendix D: Special-Status Animal Species Potential to Occur for the Santee Town Center Specific Plan Amendment D-6
Scientific Name Common Name Status Habitat Associations Potential to Occur found in areas away from water.

Occasionally seen foraging in leaf litter but
more commonly found underneath surface
objects, such as bark or rocks, where it lives
in extensive burrows.

Rana draytonii California red-legged frog FT/SSC The species has been extirpated from 70 percent of its former range. Current
distribution includes coastal drainages of
central California, from Marin County south
to northern Baja California, and in isolated
drainages in the Sierra Nevada, northern
Coast, and northern Transverse Ranges at
elevations below 5,000 feet. Inhabits a
variety of aquatic habitats including pools
and backwaters within streams and creeks,
ponds, marshes, springs, sag ponds, dune
ponds and lagoons. Breeds in artificial
impoundments such as stock ponds.

None. Though the site contains
suitable aquatic habitat that
could potentially support the
species, there are no known
occurrences of the species
within the region.

Salvadora hexalepis
virgultea
Coast patch-nosed snake --/SSC Occurs in the coastal regions of California from the northern Carrizo Plains in San Luis
Obispo County south to San Diego County
at elevations below 7,000 feet. Inhabits
semi-arid shrubby areas such as chaparral
and desert scrub. Also found along washes,
sandy flats, canyons, and rocky areas. Takes
refuge and overwinters in burrows and
woodrat nests.

Low. Remnant patches of
coastal sage scrub occur within
disturbed undeveloped lands in
the project area. However,
these areas are small in size,
have been previously disturbed.

The nearest reported
occurrences of the species are
located over 3 miles southwest
of the project area in Mission
Trails Regional Park.

Spea hammondii Western spadefoot toad --/SSC Occurs from northern California southward to San Diego County, and west of the Sierra
Nevada at elevations below 4,500 feet. This
terrestrial species requires temporary pools
for breeding. Suitable upland habitats
include coastal sage scrub, chaparral, and
grasslands. Most common in grasslands
with vernal pools or mixed grasslandHigh. Potentially suitable habitat occurs within the project site
along the San Diego River and
there are documented
occurrences in the vicinity of the
project area. However, the
project area has been heavily
Appendix D: Special-Status Animal Species Potential to Occur for the Santee Town Center Specific Plan Amendment D-7
Scientific Name Common Name Status Habitat Associations Potential to Occur coastal sage scrub areas. Breeds in
temporary pools formed by heavy rains, but
also found in riparian habitats with suitable
water resources. Breeding pools must lack
exotic predators such fish, bullfrogs, and
crayfish for the species to successfully
reproduce. Estivates in burrows within
upland habitats adjacent to potential
breeding sites.
degraded and disturbed by
surrounding development.

Thamnophis hammondii Two-striped garter snake --/SSC Found in California from Monterey County south along the coast to San Diego County
at elevations below 7,000 feet. Commonly
inhabits perennial and intermittent streams
with rocky beds bordered by riparian
habitats dominated by willows and other
dense vegetation. The species has also
been found in stock ponds and other
artificially created aquatic habitats if
bordered by dense vegetation and potential
prey, such as amphibians and fish, are
present.

High. Potentially suitable
riparian habitats occur within
the project site along the San
Diego River, but the site lacks
rocky streambed habitat
typically associated with the
species. There are documented
occurrences, including historical
observations, in the project area
and within the vicinity.

Birds
Accipiter cooperii Cooper’s hawk --/SSC In California, the species breeds from Siskiyou County south to San Diego County
and east towards Owens Valley at
elevations below 9,000 feet. Inhabits
forests, riparian areas, and more recently
suburban and urban areas. Nests within
dense woodlands and forests and isolated
trees in open areas.

High. Suitable mature riparian
woodland occurs within the
project area along the San Diego
River and is considered high
potential to support Cooper’s
hawk. There are documented
occurrences in the vicinity of the
project area.

Appendix D: Special-Status Animal Species Potential to Occur for the Santee Town Center Specific Plan Amendment D-8
Scientific Name Common Name Status Habitat Associations Potential to Occur Accipiter striatus Sharp-shinned hawk --/WL Primarily winters and migrates throughout California with breeding records in the
northern and central portions of the State,
but the species breeding range in California
is poorly known. Breeds within most closedcanopy woodlands and forests, including riparian habitats, from sea level to near
alpine elevations, generally nesting in trees
near openings. Wintering habitat similar to
breeding habitat but more expansive to
include suburban and agricultural areas.

Low. Species would only be
present as a wintering or
migrating individual. The species
would likely utilize preserved
and open space areas found to
the north and west of the
project area that provide higher
quality foraging habitat.

Agelaius tricolor Tricolored blackbird BCC/SCE, SSC Highly colonial, nomadic species occurring as a year-round resident of California from
Sonoma County to San Diego. Common
locally in the Central Valley and sporadically
throughout the state. Breeds in dense
colonies. Breeding habitat typically
characterized by emergent freshwater
marsh dominated by tall, dense cattails and
bulrush (Schoenoplectus spp.; Scirpus ssp.),
though also utilizes willows, blackberries
(Rubus spp.), thistles
(Cirsium and Centaurea spp.), nettles
(Urtica sp.), and agricultural crops. Forages
in grasslands and cropland habitats
adjacent to breeding areas.

Low. Suitable habitat occurs
within the project area along
the San Diego River and there
are documented occurrences,
including historical
observations, within the vicinity,
although this species has likely
been extirpated from the area.

Appendix D: Special-Status Animal Species Potential to Occur for the Santee Town Center Specific Plan Amendment D-9
Scientific Name Common Name Status Habitat Associations Potential to Occur Aimophila ruficeps
canescens
Southern California rufouscrowned sparrow--/WL Restricted to southwestern California occurring from Santa Barbara County
southwards to San Diego County at
elevations below 5,000 feet. Generally
found on moderate to steep slopes
vegetated with grassland, coastal sage
scrub, and chaparral. Prefer areas with
California sagebrush but are generally
absent from areas with dense stands of
coastal sage scrub or chaparral. May occur
on steep grassy slopes without shrubs if
rock outcrops are present.

None. The project site is
generally flat, lacking suitable
sloped hillsides inhabited by the
species. Occurrences of the
species are found further north
of the project area in the hills in
the northwestern portion of the
City of Santee.

Ammodramus savannarum Grasshopper Sparrow --/SSC Occurs west of the Cascade and Sierra Nevada mountains from Mendocino County
south to San Diego County at elevations
below 5,000 feet. Prefers moderately open
grasslands and prairies with scattered
shrubs. Generally avoids grasslands with
extensive shrub cover.

None. The site lacks grassland
habitat that is required by the
species. Occurrences of the
species are found further north
of the project area along the
northern edge of the City of
Santee.

Aquila chrysaetos Golden Eagle BCC/WL, FP Uncommon permanent resident and migrant throughout California, except the
center of the Central Valley. More common
in southern California than in northern
regions. Inhabits a variety of habitats,
nesting in cliffs or trees and rugged terrain
and foraging over plains, grasslands, or low
and open shrublands including chaparral
and coastal sage scrub. Typically absent
from heavily forested areas or on the
immediate coast and are almost never
detected in urbanized environments.

Low. The site lacks suitable
nesting habitat for the species,
and no known nests occur
within 4,000 feet of the project
site. The species has been
observed within the surrounding
area but would not be expected
to utilize the site for foraging
opportunities based on the
presence of development and
other human disturbances.

Additionally, extensive, higher
quality habitat is present within
preserved and open space areas
off site, including Mission Trails
Regional Park and El Capitan
Reservoir.

Appendix D: Special-Status Animal Species Potential to Occur for the Santee Town Center Specific Plan Amendment D-10
Scientific Name Common Name Status Habitat Associations Potential to Occur Artemisiospiza belli Bell’s sage sparrow BCC/WL Non-migratory resident on the coastal ranges of California and western slopes of
the central Sierra Nevada mountains.

Occurs year-round in southern California.

Breeds in dry coastal sage scrub and
chaparral, desert scrub, and similar other
open, scrubby habitats. In foothill
chaparral, they tend toward younger, less
dense stands that are recovering from
recent fires; less common in older, taller
stands that have remained unburned.

Moderate. Small patches of
remnant coastal sage scrub
occur in disturbed undeveloped
lands. Occurrences of the
species are found further north
of the project area in the
northern portion of the City of
Santee.

Athene cunicularia Burrowing Owl BCC/SSC Found from central California east to the Mojave Desert and south to coastal San
Diego County. Primarily a grassland species
that prefers areas with level to gentle
topography and well-drained soils. Species
can also occupy agricultural areas, vacant
lots, and pastures. Requires underground
burrows for nesting and roosting that are
typically dug by other species such as
California ground squirrel (Spermophilus
beecheyi). Also utilizes natural rock cavities,
debris piles, culverts, and pipes for nesting
and roosting.

Low. While some suitable
habitat occurs in the project
area, there are no observations
of the species within the project
vicinity.

Buteo swainsoni Swainson’s hawk --/ST Occurs in open grassland, desert, or sparse scrub with large trees. Once a common
species in San Diego County, now a rare
migrant, observed primarily in Borrego
Valley. Species no longer nests in southern
California (Unitt 2004).

Appendix D: Special-Status Animal Species Potential to Occur for the Santee Town Center Specific Plan Amendment D-11
Scientific Name Common Name Status Habitat Associations Potential to Occur Campylorhynchus
brunneicapillus
sandiegensis
Coastal Cactus Wren BCC/SSC One of seven subspecies occurring in southern California from southern Orange
County south to San Diego County.

Occupies native scrub vegetation with
thickets of mature cacti consisting of cholla
(Cylindropuntia spp.) or prickly-pear cactus
(Opuntia littoralis). Cacti must be tall
enough to support and protect the bird’s
nest (typically 3 feet or more in height).

Surrounding vegetation usually consists of
coastal sage scrub habitat with shrubs
normally below the level of nest placement.

Not expected. Small patches of
remnant coastal sage scrub
occur in disturbed undeveloped
portions of the project area but
lack mature cacti stands
required by the species for
nesting. Occurrences of the
species are found further north
of the project area in the
northern portion of the City of
Santee.

Circus cyaneus Northern Harrier --/SSC Occurs as a year-round resident in California. Inhabits open areas including
wetlands, marshes, marshy meadows,
grasslands, riparian woodlands, desert
scrub, and pastures and agricultural areas.

Breeding populations in southern California
from Ventura County to San Diego County
are highly fragmented with many local
populations extirpated mostly likely as a
result of habitat loss and degradation.

Nests on the ground in wetlands and
uplands within patches of dense, often tall,
vegetation in undisturbed areas.

Moderate. Potentially suitable
riparian habitat occurs along the
San Diego River, but the site has
been heavily disturbed due to
surrounding development. The
species would likely utilize
preserved and open space areas
found to the north and west of
the project area that provide
higher quality foraging and
nesting habitat.

Coccyzus americanus
occidentalis
Yellow-billed Cuckoo FT, BCC/SE Uncommon summer resident of California.

Current breeding distribution is restricted
to isolated sites in Sacramento, Amargosa,
Kern, Santa Ana, and Colorado River valleys.

Riparian obligates that nest in riparian
woodlands with native broadleaf trees and
shrubs, such as cottonwoods and willows,
at least 50 acres or more in size within the
arid to semiarid landscapes. Most likely to
be found in patches of riparian habitat
greater than 200 acres.

None. The site does not contain
a sufficient amount of suitable
riparian habitat to support this
species. Additionally, there are
no known breeding records of
the species within the project
vicinity or greater region.

Appendix D: Special-Status Animal Species Potential to Occur for the Santee Town Center Specific Plan Amendment D-12
Scientific Name Common Name Status Habitat Associations Potential to Occur Elanus leucurus White-tailed Kite --/FP Year-long resident of California residing along the coasts and valleys west of the
Sierra Nevada foothills and southeast
deserts, though the species has also been
documented breeding in arid regions east
of the Sierra Nevada and within Imperial
County. Inhabits low elevation grasslands,
wetlands, oak woodlands, open woodlands,
and is associated with agricultural areas.

Breeds in riparian areas adjacent to open
spaces nesting in isolated or relatively large
stands of trees.

Moderate. Suitable riparian
habitat occurs along the San
Diego River and the species is
known to occur in the local area.

The species would likely utilize
preserved and open space areas
found to the north and west of
the project area that provide
higher quality foraging and
nesting habitat.

Empidonax traillii extimus Southwestern Willow
Flycatcher
FE/SE Breeds in southern California, Arizona, New
Mexico, southwestern Colorado, and
extreme southern portions of Nevada and
Utah. Riparian obligates that breed in
relatively dense riparian habitats along
rivers, streams, or other wetlands where
surface water is present, or soils are very
saturated. Breeding habitat can consist of
monotypic stands of willows, a mixture of
native broadleaf trees and shrubs,
monotypic stands of exotics such as
tamarisk (Tamarix spp.) or Russian olive
(Elaeagnus angustifolia), or mixture of
native broadleaf trees and shrubs with
exotics. Restricted in San Diego County to
two modest colonies at San Luis Rey River
and Santa Margarita River, with a few
scattered pairs.

Low. Low quality riparian
habitat occurs along the San
Diego River; however, there are
no reported sightings of the
species in the area. The last
recorded breeding occurrence in
the project vicinity was over 3.5
miles west of the site at Mission
Trails Regional Park. Migrating
individuals may utilize the site
or adjacent off site areas as
stop-over habitat, but breeding
pairs are not anticipated based
on the lack of recent
observations and declining
status of the species.

Ixobrychus exilis Least bittern BCC/SSC Occurs in coastal lowland brackish lagoons, lakes, and ponds as well as in inland
streams.

Santee City CouncilFebruary 26, 2025

Santee City Council
February 26, 2025