La Sierra Alhambra Residential Project
CEQA Guidelines Section 15183 Consistency Checklist
FCS
Appendix B:
Biological Resources Assessment and
Multiple Species Habitat Conservation
Plan Consistency Analysis
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La Sierra Alhambra Residential Project
Biological Resources Assessment and Western
Riverside County Multiple Species Habitat
Conservation Plan Consistency Analysis
City of Riverside, California
Assessor’s Parcel Numbers (APNs) 149-052-004, -009, -011, -012, -013, and -014 PREPARED FOR:
MLC Holdings, Inc.
5 Peters Canyon Road, Suite 310
Irvine, California 92606
Contact: Louisa Feletto
PREPARED BY:
FirstCarbon Solutions
967 Kendall Drive, #A-537
San Bernardino, CA 92407
714.508.4100
Contact: Angela Wolfe, Senior Project Manager
Joseph Vu, Senior Biologist
January 16, 2025
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La Sierra Alhambra Residential Project
Biological Resources Assessment and MSHCP Consistency Analysis Table of Contents
1 - Introduction 1
1.1 - Project Location and Setting 1
1.2 - Project Description 1
2 - Regulatory Setting 11
2.1 - Federal 11
2.2 - State 14
2.3 - Habitat Conservation Plans 20
3 - Methods 21
3.1 - Literature and Database Reviews 21
3.2 - Field Surveys 24
4 - Results 27
4.1 - Literature Review 27
4.2 - Biological Surveys 27
5 - Analysis of Potential for Occurrence of Sensitive Biological Resources 35
5.1 - Sensitive Natural Communities 35
5.2 - Special-status Plant Species 35
5.3 - Special-status Wildlife Species 36
6 - MSHCP Consistency Analysis 39
6.1 - Relationship to Criteria Cells, Cell Groups, and Conservation Areas 39
6.2 - Covered Species Survey Area Requirements 39
6.3 - Protection of Species Associated with Riparian/Riverine Areas and Vernal Pools 39
6.4 - Protection of Narrow Endemic Plant Species 40
6.5 - Additional Survey Needs and Procedures 40
6.6 - Guidelines Pertaining to the Urban/Wildlands Interface 41
6.7 - Best Management Practices 41
7 - Impact Analysis and Recommendations 43
7.1 - Impact Analysis and Implementation Measures 43
8 - Certification 47
Appendix A: Site Photographs
Appendix B: Special-status Species Tables
Exhibits
Exhibit 1: Regional Location Map 3
LA SIERRA ALHAMBRA RESIDENTIAL PROJECT
BIOLOGICAL RESOURCES ASSESSMENT AND MSHCP CONSISTENCY ANALYSIS
iv FCS
Https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN -JN)/4940/49400042/BRA-MSHCP/49400042 La Sierra BRA-MSHCP.docx Exhibit 2: Local Vicinity Map, Topographic Base 5
Exhibit 3: Local Vicinity Map, Aerial Base 7
Exhibit 4: Site Plan 9
Exhibit 5: Soils Map 29
Exhibit 6: Vegetation Community/Land Cover Map 31
Exhibit 7: CNDDB Special-status Species Occurrences 37
La Sierra Alhambra Residential Project
Biological Resources Assessment and MSHCP Consistency Analysis
FCS 1
Https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN -JN)/4940/49400042/BRA-MSHCP/49400042 La Sierra BRA-MSHCP.docx 1 - INTRODUCTION
This Biological Resources Assessment (BRA) and Western Riverside County Multiple Species Habitat Conservation Plan (MSHCP) Consistency Analysis was prepared by FirstCarbon Solutions (FCS) to support the proposed La Sierra Alhambra Residential Project (proposed project) located in the City of Riverside, California. The purpose of this document is to (1) briefly describe the proposed project and characterize existing and potentially occurring biological resources on the project site and adjacent areas; (2) summarize relevant local, State, and federal regulations pertaining to biological resources; (3) identify and analyze requirements of the MSHCP and determine project consistency with its goals, objectives, and requirements; (4) analyze potential project-related impacts on regulated biological resources in the context of the California Environmental Quality Act (CEQA); and (5) recommend appropriate implementation measures, as needed, including applicable measures from the General Plan Final Environmental Impact Report (EIR)
1, to offset potential impacts on biological resources
according to CEQA standards.
1.1 - Project Location and Setting
The approximate 9.88-acre project site is located on the southern corner of La Sierra Avenue and Alhambra Avenue, in the City of Riverside (City), in Riverside County (County) California (Exhibit 1). 2 The project site is currently occupied by several residential structures which would be demolished prior to development. The project site is bounded by La Sierra Avenue, Loma Vista Middle School, and single-family residences to the east; single-family residences and Francisco Place to the south; single-family residences and Alhambra Avenue to the west, and single-family residences and Alhambra Avenue to the north (Exhibit 2 and Exhibit 3). The La Sierra Hills are approximately 0.23 miles to the west. The project site is located within the Riverside West United States Geological Survey (USGS) 7.5-minute Topographic Quadrangle Map, Township 3 South, Range 6 West.
1.2 - Project Description
MLC Holdings, LLC (project applicant) proposes the construction of 56 single-family residences consisting of 52 two-story residences on 45 feet by 79 feet minimum lots and four single-story residences on estate-sized parcels a minimum of 20,000 square feet in size. The proposed project encompasses approximately 9.88 acres in addition to approximately 0.36 acres of roadway and frontage improvements. Residences would range between approximately 2,000 square feet to 2,500 square feet. The estate-sized parcels would be intended to support animal keeping while providing a smooth transition from the existing horse keeping lots across Alhambra Avenue. The proposed project
1 City of Riverside. 20. Final Program Environmental Impact Report for the City of Riverside General Plan 2025. Website:
https://www.riversideca.gov/cedd/planning/general-plan. Accessed January 6, 2025. 2 This acreage includes 9.51 acres of disturbance area and 0.37 acres to be dedicated to the City of Riverside.
LA SIERRA ALHAMBRA RESIDENTIAL PROJECT
BIOLOGICAL RESOURCES ASSESSMENT AND MSHCP CONSISTENCY ANALYSIS
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Https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN -JN)/4940/49400042/BRA-MSHCP/49400042 La Sierra BRA-MSHCP.docx would include private roadways, common space and amenity areas, landscaping, and pedestrian walkways throughout the site (Exhibit 4).
The project site currently contains several trees that will be removed prior to development. The project site also contains three existing single-family residences with associated structures and an in- ground swimming pool. These residences would be demolished before the development of the proposed project.
1.2.1 - Off-site and Frontage Improvements
The proposed project would include approximately 0.36 acre roadway and frontage improvements (Exhibit 4).
Off-site design features include:
• Alhambra Avenue improvements–The proposed project would widen Alhambra Avenue adjacent to the estate lots to its full paved width section. • Installation of Red Curb–The proposed project would coordinate with the City of Riverside Traffic Division to implement red curb parking restrictions along the inside of the horizontal curve of Alhambra Avenue approaching the first proposed residential home along with advance curve ahead warning signage and centerline striping.
• Riverside Transit Association (RTA) Coordination–The proposed project would install bus stop amenities for the existing bus stop located along the project frontage through consultation with the RTA.
• La Sierra and Driveway 1–The proposed project would construct Driveway 1 on La Sierra Avenue with stop controls for the eastbound traffic (proposed project egress) in order to facilitate site access.
• La Sierra and Driveway 1/Somervale Drive–The proposed project would construct a median opening at La Sierra Avenue and Driveway 1/Somervale Drive to accommodate northbound and southbound left turn lanes with 100 feet of storage length.
1.2.2 - City Street Dedication
The proposed project would also include 0.37 acres of street dedication to the City, consisting of the following:
• La Sierra Avenue improvements–The proposed project would include a 9-foot-wide offer of dedication along the La Sierra Avenue frontage with new sidewalk and landscape strip. The existing curb line will remain as is with old driveway cuts being replaced. • Alhambra Avenue improvements–No concrete sidewalk or parkway will be installed, but rather a decomposed granite (DG) trail to match the rural residential aesthetic across the street. The improvements include a 13-foot-wide offer of dedication along Alhambra on the north side of the project boundary to accommodate the DG trail along with road widening and curb and gutter improvements.
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