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4.2.2) Disturbed/Developed/Ornamental ................................ ................................ ............35 Figure 8a. Habitat with Tract Map ................................ ................................ ...................37 Figure 8b. Habitat with Fuel Mod ................................ ................................ ....................38
4.3) Plant Species ................................ ................................ ................................ .................39
4.3.1) Trees ................................ ................................ ................................ .......................39
4.4) Wildlife Species ................................ ................................ ................................ ..............40 Table 4. Special Status Species Observed During Surveys ................................ ............41 Figure 9a. Special Status Species ................................ ................................ ..................43
4.4.1) Fairy Shrimp ................................ ................................ ................................ ............44
4.4.2) Riparian Birds ................................ ................................ ................................ ..........44 Figure 9b. 300-Foot Buffer from Riparian ................................ ................................ .......46
4.4.3) Burrowing Owl ................................ ................................ ................................ .........47
4.4.4) Nesting Birds ................................ ................................ ................................ ...........48 Figure 10. Burrowing Owl Habitat ................................ ................................ ...................49
4.4.5) Wildlife Corridor ................................ ................................ ................................ .......50
4.5) Jurisdictional Waters and Wetlands ................................ ................................ ................50
4.5.1) MSHCP Riparian/Riverine and Vernal Pool Habitat ................................ .................51 Table 5a. CDFW Streambed/MSHCP Riverine Habitat ................................ ...................51 Table 5b. USACE/RWQCB Jurisdiction ................................ ................................ ..........51 Figure 11. Jurisdictional Delineation ................................ ................................ ...............52
4.6) Prenda Arroyo ................................ ................................ ................................ ................53
4.6.1) Background ................................ ................................ ................................ ..............53
4.6.2) Historical Conditions ................................ ................................ ................................ 54
4.6.3) Current Conditions ................................ ................................ ................................ ...54 Figure 12a. Actual boundaries of Arroyo with the Parcel ................................ ................57 Figure 12b. Actual Boundaries of Arroyo and Project Impact Area ................................ .58 Figure 13a. Actual Boundaries of Arroyo and 1967 Aerial Photo ................................ ....59 Figure 13b. Actual Boundaries of Arroyo and 1978 Aerial Photo ................................ ....60 Figure 13c. Actual Boundaries of Arroyo and 1994 Aerial Photo ................................ ....61 Figure 13d. Actual Boundaries of Arroyo and 2002 Aerial Photo ................................ ....62 Figure 13e. Actual Boundaries of Arroyo and 2009 Aerial Photo ................................ ....63 Figure 13f. Actual Boundaries of Arroyo and 2016 Aerial Photo ................................ .....64 Figure 14a. Topography of the Parcel ................................ ................................ ............65 Figure 14b. Slope Analysis of the Parcel ................................ ................................ ........66
5.0) ANALYSIS OF POTENTIAL EFFECTS ................................ ................................ ..............67
5.1) Listed and Special Status Species ................................ ................................ ..................68
5.1.1) Listed and Special Status Plants ................................ ................................ ..............68
5.1.2) Listed and Special Status Wildlife ................................ ................................ ............69
5.2) Vegetation Communities ................................ ................................ ................................ 71 Table 6. Vegetation Communities Impacted ................................ ................................ ...72
5.3) Waters and Wetlands ................................ ................................ ................................ .....72
5.4) Wildlife Corridors ................................ ................................ ................................ ............72
5.5) Local Ordinances ................................ ................................ ................................ ...........73
5.6) Habitat Conservation Plan ................................ ................................ .............................. 73
6.0) SUMMARY AND RECOMMENDATIONS ................................ ................................ ..........75
7.0) REFERENCES ................................ ................................ ................................ ..................83 APPENDIX A: PLANT AND WILDLIFE SPECIES ................................ ................................ .....86 APPENDIX B: SPECIAL STATUS SPECIES POTENTIALS FOR OCCURRENCE ...................91 REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023 QUIN-05-R752.BA1.BO2.RTC6 clean iv L&L
APPENDIX C: SITE PHOTOGRAPHS ................................ ................................ .................... 114 APPENDIX D: RIVERSIDE COUNTY DOCUMENTATION ................................ ..................... 119 Certification ................................ ................................ ................................ ......................... 120 Biological Report Summary Sheet ................................ ................................ ....................... 121 Level of Significance Checklist ................................ ................................ ............................ 123 APPENDIX E: TENTATIVE PARCEL MAP 38174 AND FUEL MODIFICATION ZONE ........... 126
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023 QUIN-05-R752.BA1.BO2.RTC6 clean 1 L&L
1.0) INTRODUCTION
The following report was prepared by L&L Environmental, Inc. (L&L) for Landbuild. It describes the results of biological surveys, including a biological resources assessment, protocol breeding season survey for burrowing owl, and review of the jurisdictional areas on the parcel and the actual boundaries of the Prenda Arroyo. The Project site consists of ±5.74 acres, per TPM 38174.
No off-site areas are included.
Our assessment consisted of (1) a records search and literature review, conducted to determine the species of concern in the project area and proximity to documented special status species occurrences, (2) field reconnaissance, intended to identify plants and animals on the property and presence/absence of habitat for species of concern , (3) a protocol breeding season survey for burrowing owl, (4) mapping of the jurisdictional waters/wetlands on the site , and (5) a desktop review of the actual boundaries of the Prenda Arroyo.
1.1) Project Description
The Project is Alpine Meadows Estates, Tentative Parcel Map (TPM) 38174, a division of a single parcel into four (4) lots (see TPM 38174 and Fire Protection Plan Exhibit in Appendix E). An existing residence is present on the westernmost lot (Lot 1) and will remain. Three single-family homes will be constructed on Lots 2 through 4 . Areas outside the grading footprint and road dedication area on Lots 2 through 4 will be included in an open space easement.
Based on the TPM and information provided by the Project proponent, net acreage for Lots 1, 2, and 3 is 1.07 acres each and Lot 4 is 2.14 acres. Net acreage does not include the road dedication area along the northern edge of the parcel.
1.2) Location
The property is generally located southeast of the 91 Freeway and north of Van Buren Boulevard in the City of Riverside, Riverside County, California (Figure 1). The site is located at 841 Alpine Meadows Lane in the Alessandro Heights neighborhood of the City of Riverside, just southwest of the intersection of Alpine Meadows Lane and Kingdom Drive and about 0.3 mile east of and upstream from the Prenda Dam. The site is within Section 13 of Township 3 South, Range 5 West, as shown on the USGS Riverside East 7.5' topographic quadrangle (Figure 2).
The site is generally bounded as follows: to the west by a residential property and Harbart Drive, with Prenda Dam, a blueline stream (Prenda Creek), a mixture of undeveloped lands, residential REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023 QUIN-05-R752.BA1.BO2.RTC6 clean 2 L&L
subdivisions, and Washington Street beyond; to the north by Alpine Meadows Lane , a blueline stream (unnamed), and a mixture of residential developments and undeveloped lands, with the 91 Freeway and the City of Riverside beyond; to the east by Kingdom Drive and a mixture of residential developments and undeveloped lands, with Trautwein Road beyond; and to the south by disturbed vacant lands, Prenda Creek , and residential developments, with additional undeveloped lands, residential and commercial developments, and Van Buren Boulevard beyond (Figure 3).
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023 QUIN-05-R752.BA1.BO2.RTC6 clean 3 L&L
Figure 1
Project Vicinity Map
Alpine Meadows Lane, City of Riverside
Riverside County, California
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BIOLOGICAL AND CULTURAL
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Project Vicinity
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Figure 2
Project Location Map
(USGS Riverside East [1980] quadrangle,
Section 13, Township 3 South, Range 5 West)
Alpine Meadows Lane, City of Riverside
Riverside County, California
L&L Environmental, Inc.
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INVESTIGATIONS AND MONITORING
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Project Site
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Figure 3
Aerial Photograph
(Aerial obtained from Google Earth, August 2018)
Alpine Meadows Lane, City of Riverside
Riverside County, California
L&L Environmental, Inc.
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Kingdom Drive
Alpine Meadows Lane
Project Area
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1.3) Vegetation and Setting
The western portion of the site is developed and contains a single-family residence with detached garage and irrigated landscaping that includes a grass lawn , ornamental trees, shrubs, and flowers. The residence was unoccupied during the surveys but the onsite ornamental landscaping was generally well-maintained. There is a row of ornamental trees on the northern site boundary along Alpine Meadows Lane. Two wells are pr esent on the site, one in the northeast quadrant and a second on the south-central portion of the site. The wells are approximately 345 feet apart at either end of an onsite unimproved dirt road. The entire site perimeter is fenced with rail fencing, chain link, or barbed wire.
The western and north -central areas of the site have been cleared and have virtually no vegetation. Native vegetation is present in the east, southeast, and south-central portions of the site and consists of coastal scrub. Several rock piles are present on the northeastern corner of the site, including rock and concrete debris. The rock piles are visible in aerial photographs going back to 1967 before the surrounding area was developed and appear to be naturally occurring outcrops.
The Project is located within the Santa Ana River watershed. An unnamed ephemeral streambed (not a blueline stream) runs through the southeast portion of the site from east to west. There has been disturbance to the drainage, particularly on the west end. On the east end, vegetation in and along the drainage is brittlebush scrub. On the west end, it is either unveget ated or non- native and ruderal. The only riparian vegetation is one native willow tree with a canopy which extends over the property boundary.
The onsite stream is tributary to Prenda Creek, a blueline stream that is about 150 feet south of the site. A second blueline stream (unnamed) is about 350 feet north of the site and converges with Prenda Creek at the Prenda Dam, about 0.3 mile west and downstream of the site. Most of the site is within the mapped extent of the Prenda Arroyo, although the Project disturbance area is not within the watercourse as it currently exists (see Section 4.6 and Figures 4, 12a, and 12b).
1.4) Soils and Topography
The northwestern portion of the site and the southeast ern corner are relatively flat , sloping downward to the drainage running through the site. The elevation onsite ranges from 1279 feet (390 meters) above mean sea level (AMSL) in the southwest corner to 1334 feet (407 meters) AMSL in the northeast corner.
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023 QUIN-05-R752.BA1.BO2.RTC6 clean 7 L&L
Soils onsite are mapped as Buren fine sandy loam (BuD2), Cieneba rocky sandy loam (CkF2), Hanford coarse sandy loam (HcC), and terrace escarpments (TeG) (NRCS 2021) (Figure 5).
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023 QUIN-05-R752.BA1.BO2.RTC6 clean 8 L&L
Figure 4
Mapped Area of
Prenda Arroyo
(Riverside, California Code of Ordinances / Title 17
https://library.municode.com/ca/riverside/codes/code_
of_ordinances)
Alpine Meadows Lane, City of Riverside
County of Riverside, California
L&L Environmental, Inc.
BIOLOGICAL AND CULTURAL
INVESTIGATIONS AND MONITORING
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Project Area
Prenda Arroyo
City of Riverside
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Figure 5
Soils Map
(Aerial obtained from Google Earth, August 2018,
USDA Nat. Res. Cons. Serv. SSURGO Data)
Alpine Meadows Lane, City of Riverside
Riverside County, California
L&L Environmental, Inc.
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BuD2 = Buren fine sandy loam (8-15% slopes, eroded)
CkF2 = Cieneba rocky sandy loam (15-50% slopes, eroded) HcC = Hanford coarse sandy loam (2-8% slopes)
TeG = Terrace escarpments
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023 QUIN-05-R752.BA1.BO2.RTC6 clean 10 L&L
2.0) REGULATORY ENVIRONMENT
The following summary of the regulatory environment is provided for information purposes and is not intended for review or comment by the lead or wildlife agencies.
2.1) Federal Endangered Species Act
Section 9 of the federal Endangered Species Act (FESA), 1973 (as amended) prohibits “take” of federally listed threatened and endangered species. Candidate species receive no protection under FESA, but the USFWS encourages conservation of these species. “Take” is defined as to harass, harm, pursue, hunt, shoot, wound, kill, trap, capture, or collect, or to attempt to engage in any such conduct. “Harm” is further defined to include habitat modification or degradation when it actually kills or injures wild life by impairing essential behavioral patterns including breeding, feeding, or sheltering.
Incidental take is take that results from, but is not the purpose of, carrying out an otherwise lawful activity. Incidental take of federally listed species may be authorized under Section 7 of FESA for federal properties or where federal actions (i.e., federal permitting or federal funding) are involved or under Section 10 of FESA for non-federal actions.
Section 7 requires all Federal agencies, in "consultatio n" with the USFWS, to ensure that their actions are not likely to jeopardize the continued existence of listed species or result in destruction or adverse modification of critical habitat. The Section 7 process requires preparation of a federal Biological Assessment to determine whether a proposed major construction activity under the authority of a Federal action agency is likely to adversely affect listed species, proposed species, or designated critical habitat. After formal consultation, the USFWS will issue a Biological Opinion stating whether or not a Federal action is likely to jeopardize the continued existence of listed species or result in the destruction or adverse modification of critical habitat.
Section 10 lays out the guidelines under which a permit may be issued to authorize take of endangered or threatened species (in the absence of any federal nexus). Application for an incidental take permit under Section 10 is subject to certain requirements, including preparation by the permit applicant of a conservation plan, generally known as a "Habitat Conservation Plan" or "HCP." An HCP is a plan that outlines ways of maintaining, enhancing, and protecting a given habitat type needed to protect species. The plan usually includes measures to minimize impacts, such as provisions for permanently protecting land, restoring habitat, and relocating plants or animals to another area.
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2.2) Jurisdictional Waters and Wetlands
Three agencies gene rally regulate activities within streams, wetlands, and riparian areas in California: (1) the U.S. Army Corps of Engineers (USACE) regulates activities under Section 404 of the federal Clean Water Act; (2) the Regional Water Quality Control Board (RWQCB) regulates activities under Section 401 of the federal Clean Water Act and the State Porter -Cologne Water Quality Control Act; and (3) the California Department of Fish and Wildlife (CDFW) regulates activities under California Fish and Game Code Sections 1600-1616.
2.2.1) Federal Clean Water Act, Section 404
Section 404 of the federal Clean Water Act applies to "Waters of the United States" (WoUS). By definition these include waterways that c ould be used for interstate commerce and their tributaries, including any waters that flow into traditional navigable waters. In non -tidal waters, the limits of jurisdiction are "ordinary high water marks" (OHWM) such as stream banks.
There have been re cent changes to the definition of WoUS and the agencies are interpreting WoUS consistent with the pre-2015 regulatory regime until further notice. Under this rule, WoUS includes:
1. All waters which are currently used, or were used in the past, or may be sus ceptible to use in interstate or foreign commerce, including all waters which are subject to the ebb and flow of the tide;
2. All interstate waters including interstate wetlands;
3. All other waters such as intrastate lakes, rivers, streams (including intermitte nt streams), mudflats, sandflats, wetlands, sloughs, prairie potholes, wet meadows, playa lakes, or natural ponds, the use, degradation or destruction of which could affect interstate or foreign commerce including any such waters:
a. Which are or could be use d by interstate or foreign travelers for recreational or other purposes; or
b. From which fish or shellfish are or could be taken and sold in interstate or foreign commerce; or
c. Which are used or could be used for industrial purposes by industries in interstate commerce;
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4. All impoundments of waters otherwise defined as waters of the United States under this definition;
5. Tributaries of waters identified in paragraphs (s)(1) through (4) of this section;
6. The territorial sea;
7. Wetlands adjacent to waters (other than w aters that are themselves wetlands) identified in paragraphs (s)(1) through (6) of this section; waste treatment systems, including treatment ponds or lagoons designed to meet the requirements of CWA (other than cooling ponds as defined in 40 CFR 423.11(m) which also meet the criteria of this definition) are not waters of the United States.
Final determination and delineation of federal jurisdiction is made by the USACE and not by the project biologists. Therefore, fieldwork and documentation of the site c onditions are done as a preliminary delineation until the USACE reviews and concurs with the results.
2.2.2) Federal Clean Water Act, Section 401 and Porter-Cologne The RWQCB has jurisdiction over wetlands, WoUS, and Waters of the State under Section 401 of the CWA and the Porter -Cologne Water Quality Control Act (Porter -Cologne) under the California Water Code (§ 13000, et seq.) Permitting is required for activities that will result in a discharge of soils, nutrients, chemicals, detrital materials, or other pollutants into WoUS, Waters of the State, or adjacent wetlands that will affect the water quality of those bodies and the watershed.
2.2.3) California Fish and Game Code, Section 1600
The CDFW, through provisions of the California Fish and Game Code (Sections 1600 -1616), is empowered to issue agreements (“Lake and Streambed Alteration Agreements”) for projects that will adversely affect wildlife habitat associated with any river, stream, or lake edges. The Lake and Streambed Alteration Agreement will typically include required measures to mitigate impacts.
Sections 1600-1616 of the Cal ifornia Fish and Game Code apply to stream channels, defined elsewhere in the Code as follows:
"A stream is a body of water that flows at least periodically through a bed or channel having banks and supports fish or other aquatic life. This includes watercourses having a surface or subsurface flow that supports or has supported riparian vegetation." REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023 QUIN-05-R752.BA1.BO2.RTC6 clean 13 L&L
The state definition does not specify a flow rate or inundation frequency and provides no clear distinction between jurisdictional and non-jurisdictional lands.
While the federal USACE criteria (hydrology, soils, and vegetation) are used to evaluate the presence or absence of wetlands within the project site, the determination of state wetland status is not based on the combined presence of the three criterion b ecause the state can take jurisdiction of any one of the three: (1) the presence of open water or saturated soils, (2) presence of vegetation including riparian or wetland species, and/or (3) water-modified or oxygen-depleted soils.
2.3) California Endangered Species Act
California Endangered Species Act (CESA) definitions of endangered and threatened species parallel those defined in the FESA. The CESA defines an endangered species as “. . . a native species or subspecies of a bird, mammal, fish, amphibian, reptile or pl ant which is in serious danger of becoming extinct throughout all, or a significant portion, of its range due to one or more causes including loss of habitat, change in habitat, over exploitation, predation, competition or disease.” Endangered species are in serious danger of becoming extinct and threatened species are likely to become endangered species in the foreseeable future (according to Sections 2062 and 2067, respectively, of the California Fish and Wildlife Code). Candidate species are those under formal review by the CDFW for listing as endangered or threatened (Section 2067). Prior to being considered for protected status, the CDFW designates a species as being of special concern. Species of Special Concern are those for which the CDFW has inf ormation indicating population decline.
2.4) California Environmental Quality Act
The California Environmental Quality Act (CEQA) and CEQA Guidelines (§ 15000 et seq.) require identification of environmental effects from discretionary projects. Significant effects are to be mitigated by avoidance, minimization, rectification, or compensation whenever possible.
Effects to all state and federal listed species are considered significant under CEQA. In addition to formally listed species, CEQA considers effects to species that are demonstrably endangered or rare as important or significant. These definitions can include state designated species of special concern, federal candidate and proposed species, California Natural Diversity Database (CNDDB) tracked species, and California Rare Plant Rank (CRPR) 1B and 2 plants.
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Appendix G of the CEQA Guidelines specifically addresses biological resources and encompasses a broad range of resources to be considered.
2.5) California Natural Diversity Database
The California Natural Diversity Database (CNDDB) is a database that ranks overall condition of listed and special status species and sensitive vegetation communities on global (throughout its range) and state (within California) levels. The CNDDB includes documented occurrences of listed and special status species that have been reported to CDFW. State ranking is numerical, ranging from one to five (S1 to S5), with one indicating very few remaining individuals or little remaining habitat and five indicating a demonstrably secure to ineradicable population condition.
State ranks (S ranks) may also include an extension (e.g., S1.x) indicating current threats ranging from one (very threatened) to three (no current threats known).
2.6) California Rare Plant Rank
The California Native Plant Society (CNPS) Inventory of Rare and Endangered Species includes documented occurrences of special status plant species that are available through the Consortium of California Herbaria and other sources. The CNPS, in coordination with CDFW, has cataloged California's rare and endangered plants into li sts according to population distributions and viability. These lists are numbered and indicate the following California Rare Plant Ranks (CRPR): (1A) presumed extinct in California; (1B) rare, threatened, or endangered throughout their range; (2A) presumed extirpated in California, but more common in other states; (2B) threatened or endangered in California, but more common in other states; (3) more information is needed to establish rarity; and (4) plants of limited distribution in California (i.e., naturally rare in the wild), but whose populations do not appear to be susceptible to threat. A CRPR may also have an extension (e.g., 1B.x) that indicates current level of threat: seriously threatened (x.1), moderately threatened (x.2), or not very threatened (x.3).
2.7) Information for Planning and Consultation
The U.S. Fish and Wildlife Service (USFWS) Information for Planning and Consultation (IPaC) is a database that includes federally listed endangered or threatened species and species proposed for listing, designated critical habitat, Birds of Conservation Concern, and other federally regulated lands and biological resources.
2.8) Migratory Bird Treaty Act
The federal Migratory Bird Treaty Act (MBTA) of 1918 (16 USC 703-711) is an international treaty that made it unlawful to take, possess, buy, sell, purchase, or barter any migratory bird listed in REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023 QUIN-05-R752.BA1.BO2.RTC6 clean 15 L&L
50 CFR Part 10, including feathers or other parts, nests, eggs, or products, except as allowed by implementing regulations (50 CFR 21). Executive Order 13186 ensures that environmental analyses of federal actions required by the National Environmental Policy Act (NEPA) or other established environmental review processes evaluate the effects of actions on migratory birds, with emphasis on species of concern. Disturbance that causes nest abandonment and/or loss of reproductive effort (e.g., killing or abandonment of eggs or young) or loss of habitat upon which the birds depend could be considered “take.”
2.9) California Fish and Game Code, Sections 3503 and 3513 California Fish and Game Code Section 3503 prohibits take, possession, or needless destruction of bird nests or eggs except as otherwise provided by the Code; Section 3503.5 prohibits take or possession of birds of prey or their eggs except as otherwise provided by the Code; and Section 3513 provides for the adoption of the provisions of the federal Migratory Bird Treaty Act, described above.
2.10) Western Riverside County Multiple Species Habitat Conservation Plan The County of Riverside, including eight (8) additional land jurisdictions and 14 cities, have prepared a Multiple Species Habitat Conservation Plan (MSHCP) for western Riverside County.
The MSHCP will build upon existing preserves and pr ovide connectivity and wildlife corridors throughout the region. The MSHCP proposes to conserve approximately 500,000 acres and 146 different species.
The MSHCP was approved by the county on June 17, 2003 and an Implementation Agreement (IA) between the USFWS, the CDFW, and the County was executed and an associated USFWS Section 10(a)(1)(B) Permit (No. TE -088609) was issued on June 22, 2004. The permit grants take authorization for certain species identified in the permit as "Covered Species Adequately Conserved."
The MSHCP establishes seven (7) core reserve areas and associated linkages between proposed and existing core areas. The MSHCP divides areas into Cells using USGS coordinates.
Conservation efforts for the project site will be evaluated with regard to sensitive species identified as not adequately conserved and observed onsite, riverine/riparian or vernal pool habitat and their associated sensitive species (if located onsite), fairy shrimp, jurisdictional areas, and sage scrub.
Focused surveys are requir ed for species identified as not adequately conserved under the MSHCP if suitable habitat is present onsite. If focused surveys are determined necessary and REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023 QUIN-05-R752.BA1.BO2.RTC6 clean 16 L&L
species identified as not adequately conserved under the MSHCP occur onsite, the proponent may be required to undergo a Habitat Acquisition and Negotiation Strategy (HANS) determination with the County of Riverside. If a single family home or mobile home is to be placed on an existing legal lot, permitting will be reviewed according to the procedures outlined in MSHCP Section
6.1.1, Expedited Review Process for Single-Family Homes or Mobile Homes to Be Located on an Existing Lot within the Criteria Area.
MSHCP Section 6.1.2 (Riparian/Riverine Habitat)
Section 6.1.2 of the MSHCP requires an assessment of the potentially significant effects of the proposed project on Riparian/Riverine areas, and vernal pools as currently required by CEQA using available information augmented by project-specific mapping. Riparian/Riverine areas and vernal pools are defined as follows:
• Riparian/Riverine Areas are lands that have flow for all or a portion of the year and which contain habitat dominated by trees, shrubs, persistent emergents, or emergent mosses and lichens, which occur close to or which depend upon soil moisture from a nearby fresh water source; or areas with fresh water flow during all or a portion of the year. • Vernal pools are seasonal wetlands that occur in depression areas that have wetlands indicators of all three parameters (soils, vegetation, and hydrology) during the wetter portion of the growing season but normally lack wetlands indicators of hydrology and/or vegetation during the drier portion of the growing season. Obligate hydrophytes and facultative wetlands plant species are normally dominant during the wetter portion of the growing season, while upland species (annuals) may be dominant during the drier portion of the growing season.
The determination that an area exhibits vernal pool characteristics, and the definition of the watershed supporting vernal pool hydrology, must be made on a case-by case basis. Such determinations should consider the length of the time the area exhibits upland and wetland characteristics and the manner in which the area fits into the overall ecologica l system as a wetland. Evidence concerning the persistence of an area’s wetness can be obtained from its history, vegetation, soils, and drainage characteristics, uses, to which it has been subjected, and weather and hydrologic records.
With the exception of wetlands created for the purpose of providing wetlands habitat or resulting from human actions to create open waters or from the alteration of natural stream courses, areas demonstrating characteristics as described above which are artificially created are not included in these definitions.
Burrowing Owl
Section B (Species Accounts) of Volume 2 of the MSHCP (Dudek 2003) lists the following objectives for burrowing owl conservation/protection:
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Objective 1
Include within the MSHCP Conservation Area at le ast 27,470 acres of suitable primary habitat for the burrowing owl including grasslands.
Objective 2
Include within the MSHCP Conservation Area at least 5 Core Areas and interconnecting linkages. Core areas may include the following: (1) Lake Skinner/Diamond Valley Lake area (Existing Core C plus Proposed Extension of Existing Cores 5, 6, 7; 29,060 acres); (2) playa west of Hemet (Proposed Noncontiguous Habitat Block 7; 1,250 acres); (3) San Jacinto Wildlife Area/Mystic Lake area including Lake Perris are a (Existing Core H; 17,470 acres); (4) Lake Mathews (Existing Core C plus Proposed Extension of Existing Cores 2; 23,710 acres); and (5) along the Santa Ana River (9,670 acres). The Core Areas should support a combined total breeding population of approximately 120 burrowing owls with no fewer than five pairs in any one Core area.
Objective 3
Include within the MSHCP Conservation Area at least 22,120 acres of suitable secondary habitat for the burrowing owl including playas and vernal pools, and agriculture outside of the Core Areas identified above. Areas where additional suitable habitat could be conserved include west of the Jurupa Mountains, near Temescal Wash (i.e., vicinity of Alberhill), near Temecula Creek, within the Lakeview Mountains, Banning, the Badlands, Gavilan Hills, and Quail Valley.
Objective 4
Include within the MSHCP Conservation Area the known nesting locations of the burrowing owl at Lake Perris, Mystic Lake/San Jacinto Wildlife area, Lake Skinner area, the area around Diamond Valley Lake, playa west of Hemet, Lakeview Mountains, Lake Mathews/Estelle Mountain Reserve and Sycamore Canyon Regional Park.
Objective 5
Surveys for burrowing owl will be conducted as part of the project review process for public and private projects within the burrowing owl survey area where suitable habitat is present (see Burrowing Owl Survey Area Map, Figure 6-4 of the MSHCP, Volume I). The locations of this species determined as a result of survey efforts shall be conserved in accordance with procedures described within Section 6.3.2, MSHCP, Volume I and the guidance provided below:
Burrowing owl surveys shall be conducted utilizing accepted protocols as follows.
If burrowing owls are detected on the project site then the action(s) taken will be as follows:
If the site is within the Criteria Area, then at least 90 percent of the area with long -term conservation value will be included in the MSHCP Conservation Area. Otherwise:
1) If the site contains, or is part of an area supporting less than 35 acres of suitable habitat or the survey reveals that the site and the surrounding area supports fewer than 3 pairs of burrowing owls, REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023 QUIN-05-R752.BA1.BO2.RTC6 clean 18 L&L
then the on -site burrowing owls will be passively or actively relocated following accepted protocols.
2) If the site (including adjacent areas) supports three or more pairs of burrowing owls, supports greater than 35 acres of suitable habitat and is non -contiguous with MSHCP Conservation Area lands, at least 90 percent of the area with long-term conservation value and burrowing owl pairs will be conserved onsite.
The survey and conservation requirements stated in this objective will be eliminated when it is demonstrated that Objectives 1 – 4 have been met.
Objective 6
Pre-construction presence/absence surveys for burrowi ng owl within the survey area where suitable habitat is present will be conducted for all Covered Activities through the life of the permit. Surveys will be conducted within 30 days prior to disturbance. Take of active nests will be avoided. Passive relocation (use of one- way doors and collapse of burrows) will occur when owls are present outside the nesting season.
Objective 7
Translocation sites for the burrowing owl will be created in the MSHCP Conservation Area for the establishment of new colonies. Translocation sites will be identified, taking into consideration unoccupied habitat areas, presence of burrowing mammals to provide suitable burrow sites, existing colonies and effects to other Covered Species. Reserve Managers will consult with the Wi ldlife Agencies regarding site selection prior to translocation site development.
2.11) City of Riverside Hillside/Arroyo Grading
Title 17 (Grading) of the City of Riverside Municipal Code defines the actions that require a permit.
One of the definitions (Section 17.08.011) identifies what areas are considered to be “arroyos” within the city limits. Section 17.12.020 specifies which areas are subject to hillside/arroyo grading provisions that are found in Section 17.28.020. (https://library.municode.com/ca/riverside/codes/code_of_ordinances?nodeId=PTIICOOR_TIT1 7GR).
17.08.011 - Arroyo.
"Arroyo" shall mean those areas shown within the limits of the Mockingbird Canyon, Woodcrest, Prenda, Alessandro, Tequesquite, or Springbrook Arroyos and associated tributaries as shown on Exhibits A-F of this title [Exhibit C: Prenda Arroyo included below]. The limits of these arroyos and arroyo tributaries shall include all the land within the water course area, the adjacent slopes having an average natural slope of 30 percent or greater, and all other areas within the boundaries shown on Exhibits A-F of this title.
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023 QUIN-05-R752.BA1.BO2.RTC6 clean 19 L&L
17.12.020 - Applicability—Hillside/arroyo grading.
The provisions for hillside/arroyo grading as defined in Sec tion 17.28.020 of this title shall apply to all excavation and grading of any land if any one of the following criteria apply to the property in question:
A. The property is in the RC - Residential Conservation Zone.
B. The property has an average natural slope ten percent or greater.
C. The property is within or is adjacent to the boundaries of the Mockingbird Canyon, Woodcrest, Prenda, Alessandro, Tequesquite, and Springbrook Arroyos. Blue line streams identified on the United States Geological Survey (USGS) Maps or other significant arroyos may also be included. (Ord. 6453 § 1, 1998)
17.28.020 - Hillside/arroyo grading.
The following supplementary regulations shall apply to the grading of hillsides and arroyos.
A. Grading requirements. Where grading is proposed on any parcel having an average natural slope of ten percent or greater, or which is zoned Residential Conservation (RC), or which is located within or adjacent to the Mockingbird Canyon, Woodcrest, Prenda, Alessandro, Tequesquite, or Springbrook Arroyos, or a blue line stream identified on USGS Maps, or other significant arroyo, the grading must be confined per this chapter and limited to the
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023 QUIN-05-R752.BA1.BO2.RTC6 clean 20 L&L
minimum grading necessary to provide for a house, driveway, garage and limited level yard. The ungraded terrain must be left in its natural form for the remainder of the site. All hillside/arroyo grading shall conform to the following general requirements:
1. The overall shape, height or grade of any cut or fill slopes shall be developed utilizing contour grading in concert with existing natural contours and the scale of the natural terrain of the site.
2. Where two cut or fill slopes intersect, the intersection shall be horizontally rounded and blended.
3. The tops of cut and fill slopes shall be rounded vertically with a constant tangent (T) of ten feet (See Figure 2 of Title 17).
4. Where any cut or fill slopes intersect the natural grade, the intersection of each slope shall be vertically and/or horizontally rounded and blended with the natural contours so as to present a natural slope appearance.
5. Where any cut or fill slope exceeds 100 feet in horizontal length, the horizontal contours of the slope shall be developed in concert with existing natural contours.
6. The area of a site proposed to be graded shall be that which fits into the natural terrain and which allows for a minimal amount of grading. The ungraded area must be left in its natural form for the remainder of the site. No native vegetation shall be removed and no non-native vegetation shall be introduced or allowed within hillside areas not included as part of the graded pad area. The Community & Economic Development Director shall be responsible to determine the precise boundaries of the non -graded area to be retained as natural open space and an open space easement shall be recorded over this area. Portions of the non -graded area may be excluded from the natural open space easement by the Community & Economic Development Director based on factors specific to each lot, including whether th e area is isolated from a meaningful area of contiguous open space and the absence of unique topographical or geological features. The intent of this provision is to create significant areas of contiguous open space and not to create small, isolated areas of open space. No change to the boundaries of the area determined to be placed in natural open space by Community & Economic Development Director shall be made unless the Planning Commission determines that exceptional or special circumstances addressed in Chapter 17.32 Conditional Exceptions apply.
7. Structures shall be designed to fit with the contours of the hillside and relate to the overall form of the terrain. Structures shall be designed to fit into the hillside rather than altering the hillside to fit the structure.
8. Streets shall be designed to generally follow the natural contours and land form in order to minimize cut and fill.
9. Pad sizes for single family residential development shall be limited as follows:
Under ten percent average natural slope within the area to be graded - No limit Ten percent to 15 percent average natural slope within the area to be graded - 27,000 square feet
Fifteen percent to 30 percent average natural slope within the area to be graded - 21,000 square feet
Thirty percent to 40 percent average natural slope within the area to be graded - 18,000 square feet
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Over 40 percent average natural slope - no grading per 17.28.020 A. 12.
The Community & Economic Development Director shall have the authority to increas e or decrease the pad size category by up to 25 percent without a grading exception depending on the sensitivity of the site. Sensitivity shall be determined by such factors as the pad's visibility from the public right-of-way, its location on a ridgeline, the presence of habitat for sensitive species including rare, threatened, or endangered species, or the presence of unique topographic features such as knolls, valleys, rock outcroppings or other features or viewscapes. (Level padded area defined as area that is at a slope ratio of 5:1 or flatter.)
10. Slopes having a ratio of 3.9:1 or steeper shall not exceed 20 feet in vertical height.
Slopes having a 4:1 or flatter ratio may be up to 25 feet in vertical height. The Community & Economic Development D irector shall have the authority to increase vertical slope height by up to 25 percent without a grading exception depending on the sensitivity of the site. Sensitivity shall be determined by such factors as the slope's visibility from the public right-of-way, its location on a ridge line, the presence of habitat for sensitive species including rare, threatened, or endangered species, or the presence of unique topographic features such as knolls, valleys, rock outcroppings or other features or viewscapes. (Level padded area defined as area that is at a slope ratio of 5:1 or flatter.)
11. Slopes requiring benches shall not normally be permitted.
12. No grading shall be permitted on slopes exceeding 40 percent unless findings can be made by the Planning Commission that exceptional or special circumstances as set forth in Chapter 17.32 Conditional Exceptions apply.
13. Driveway grading:
a. Shall not exceed 15 feet in width.
b. Shall not exceed a 15 percent finished grade unless otherwise approved by the Fire Department and Community & Economic Development Director. c. Driveway cut and fill slopes shall be subject to the same restrictions as identified in Chapter 17.28.
d. Driveway grading required to provide access to the level building pad area is not included as part of the total permitted level pad area.
14. Arroyo grading.
a. No development or grading of any kind shall be permitted within 50 feet of the limits of the Mockingbird Canyon, Woodcrest, Prenda, Alessandro, Tequesquite, or Springbrook Arroyos and a ssociated tributaries as shown on Exhibits A -F. The Community & Economic Development Director shall have the authority to administratively allow grading within designated arroyo tributaries depending on the sensitivity of the area. Sensitivity shall be d etermined by such factors as the presence of riparian vegetation, habitat for rare or endangered species, significant rock outcroppings or other unique topographic features on the property proposed to be graded or in nearby segments of the same tributary. b. The limits of these arroyos shall include all that land within the watercourse area, the adjacent slopes having an average natural slope of 30 percent or greater, and all other areas within the boundaries shown on Exhibits A-F.
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c. No grading for private crossings of these arroyos shall be permitted. Grading for public street crossings must be limited to the minimum necessary for access and emergency access.
d. No native vegetation shall be removed and no non -native vegetation shall be introduced within the boundaries of theses arroyos in areas that cannot be graded. e. All land within the boundaries of these arroyos shall be included as an open space easement on final tract and parcel maps.
f. Where drainage structures enter these arroyos the stru cture must be blended into the natural terrain, and where necessary, lined with natural or quarried rock or other material as approved by the Community & Economic Development Director and Public Works Director.
g. Where possible, other arroyos shall be pre served as natural drainage courses.
Significant natural features within these arroyos shall be preserved including riparian vegetation, boulders, rock outcroppings, milling features and deeply incised channels. These features shall be shown on the grading plans submitted for review. To insure that these areas are adequately preserved, an appropriate setback for development and grading may be applied.
h. Development or grading within blue line streams shall be limited to the minimum necessary for access or drainage structures. Any disturbance will require permits from the U.S. Corps of Engineers and the State Department of Fish and Wildlife. (Ord. 7459 § 36, 2019; Ord. 7362 §9, 2017; Ord. 6673 §§ 6, 7, 8, 9, 2003; Ord. 6453 § 1, 1998)
2.12) City of Riverside Tree-related Ordinances
Section 13.25.020 of the City of Riverside Code of Ordinances states that, “No trees or shrubs planted or growing along the public streets of the City shall be removed except pursuant to the policy established by the Park, Recreation and Community Services Commission and no trees along the streets shall be cut, pruned or trimmed except pursuant to the policy established by the Commission and approved by the City Council; nor shall anyone not authorized by said policy trench around or alongside of any tree, plant or shrub with a view to cutting the roots of same.” The Parks, Recreation and Community Services Commission oversees the Urban and Community Fore stry Program. The City’s Urban Forestry Policy Manual (pages 13 and 14) provides the following guidance regarding impacts to trees on City property:
“5. Construction Projects on City Property - The following guidelines have been developed to protect trees on City property during construction projects:
a. A root protection zone shall be defined by a minimum 42" high barrier constructed around any potentially impacted tree. This barrier shall be at the drip REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023 QUIN-05-R752.BA1.BO2.RTC6 clean 23 L&L
line or at a distance from the trunk equal to 6 inches for each inch of trunk diameter
4.5 feet above the ground if this method defines a larger area. b. Should it be necessary to install irrigation lines within this area, the line shall be located by boring, or an alternate location for the trench is to b e established. The minimum clearance between an open trench and a street tree shall be one (1) foot, or six (6) inches for each inch of trunk diameter measured at 4.5 feet above existing grade if this method defines a larger distance. The maximum clearance shall be ten (10) feet. The contractor shall conform to these provisions unless otherwise directed by the City.
c. At no time shall any equipment, materials, supplies or fill be allowed within the prescribed root protection zone unless otherwise directed by the City. The root protection zone is defined as the larger of the drip line of 1) the tree or 2) the distance from the trunk equal to six (6) inches for each inch of trunk diameter measured at 4.5 feet above existing grade.
d. It is recognized that failure to abide by these provisions will result in substantial root damage to trees that may not be immediately apparent. The City will therefore assess damages according to the International Society of Arboriculture standards and bill the responsible party.
6. Release Requirements
a. In order for construction work that will impact a tree to begin, a signed release form must be issued by the Public Works Department. This release shall be based on the condition of the tree and an assessment of the impact of the proposed construction. Mitigation measures necessary to protect the tree will also be stated. b. In the event a tree must be removed, the Public Works Department will issue a Tree Removal Permit.”
Section 17.28.030 of the City of Riverside Code of Ordinances states in part that, “Existing trees which have a six inch or greater trunk size at a point three feet above grade shall be accurately shown on the grading plan and shall be preserved in place whenever possible as determined by the Community & Economic Development Director.”
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3.0) METHODS AND PERSONNEL
3.1) Literature Review
Certain plants and animals have been listed as threatened or endangered under state or federal Endangered Species Acts. Other species have not been formally listed, but declining populations or habitat availability are reasons for concern regarding their long-term viability. These species are included in lists compiled by resource management agencies or conservation organizations.
In this report, the term “listed” refers to all species that are listed, or candidates for listing, as threatened or endanger ed by the U.S. Fish and Wildlife Service (USFWS) or California Department of Fish and Wildlife (CDFW). “Special status species” refers to all species included in one or more compendia of rare species, but not listed as threatened or endangered by USFWS or CDFW.
Pertinent literature was reviewed to identify local occurrences and habitat requirements of special status species and communities occurring in the region. Literature reviewed included compendia provided by resource agencies (CDFW 2021a, 2021b), a search of the California Natural Diversity Database (CNDDB; CDFW 2021c) and California Native Plant Society Inventory of Rare and Endangered Plants (CNPS 2021) for the Project topographic quadrangle ( Riverside East) and adjacent quadrangles (Fontana, San Bernardino South, Redlands, Riverside West, Sunnymead, Lake Mathews, Steele Peak, and Perris), and a search of USFWS Information for Planning and Consultation (IPAC; USFWS 2021a) for the Project site.
Potentials for occurrence of plant and wildlife species were evaluated and classified as either absent, not expected, low, moderate, high, or occurs. These classifications are based on the presence and quality of habitat, geographic and elevation range of species, proximity to a known occurrence of a species obtained from CNDDB or other reliable data, and field observations.
Classifications for individual species may be modified based on biologists’ experience and expert opinion.
Scientific names of plants follow Baldwin et al. (2012) with updates from the online Jepson eFlora (Jepson 2021). Scientific names of animals follow Stebbins (1985), Jameson and Peeters (1988), Cornell (2021), and Arnett (2000), with updates from academic sources. Current cons ervation status of plant and wildlife species determined from CDFW (2021a, 2021b). Vegetation community classifications follow Sawyer et al. (2009) with updates from CDFW (2020). State ranks (S ranks) for vegetation communities are from CDFW (2020).
In this report, the “site” or “property” refers to the entire ±5.74-acre parcel.
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L&L also conducted a biological survey of the site in 2006 (L&L 2006 a) and a summary of that information is included in this report as appropriate. The 2006 survey consisted of one site visit on August 17, 2006. In this report, the “survey” refers to the 2021 survey unless the 2006 survey is specifically stated.
3.2) Biological Surveys
L&L biologist Guy Bruyea visited the Project site during June and July of 2021 to conduct a protocol breeding season burrowing owl survey . A biological resources assessment was also conducted to describe vegetation and habitat and evaluate the site for presence of suitable habitat for special status plant and wildlife species (Table 1).
Table 1. Survey dates, times, and weather conditions.
Date Time Sunrise* Weather Wind Speed (mph)
06.22.2021 0625-0830 0542 Partly Cloudy, 64-69°F 0-1
07.07.2021 0645-0815 0548 Clear, 65-70°F 0-1
07.19.2021 0715-0845 0555 Partly Cloudy, 75-80°F 1-3
07.28.2021 0730-0900 0601 Clear, 74-81°F 0-1
*sunrise times from www.timeanddate.com
A total of about 6.5 person-hours were spent onsite. All habitat types onsite were visited on foot.
The site was surveyed by conducting a series of meandering transects across the subject property where possible, stopping periodically for observations and notations. A general habitat map and field notes were completed during the survey. All field surveys were conducted during daylight hours. Digital photographs were taken to record site conditions during the survey.
Plants of uncertain identity were collected and subseque ntly identified from keys, descriptions, and illustrations in Abrams (1923, 1944, and 1951), Abrams and Ferris (1960), Munz (1974), and Parker (1999).
3.3) Burrowing Owl Survey
Burrowing owl surveys were conducted concurrently with the biological resources assessment (Table 1). The site was examined for suitable burrow sites and for signs of occupation by burrowing owl, including pellets, feathers, whitewash, prey remains, and eggshell fragments, as well as individual owls. A search for potentially suitable burrows within dirt, wood, or rock debris piles, artificially created berms, and other locations was conducted during surveys.
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Surveys were conducted in areas identified during the habitat assessm ent survey as potential burrowing owl habitat, including open areas onsite and areas where California ground squirrel (Spermophilus beechyi) activity was expected (i.e., potentially suitable burrows). An additional 150-meter (500-foot) buffer area surrounding the site was visually inspected, where possible, in areas identified as potential burrowing owl habitat (Figure 6). Any developed areas were visually surveyed with binoculars due to private property trespassing concerns.
Transects were walked throughout the property where suitable habitat is present. Coupled with binocular surveys of any restricted offsite areas, this allowed for complete visual ground coverage of the survey area. Distance between transects was approximately 15 to 20 meters.
Per MSHCP protocol for burrowing owl surveys (RCA 2006), surveys should be conducted during weather that is conducive to observing owls outside their burrows and detecting burrowing owl sign. Surveys will not be accepted if they are conducted during rain, high w inds (> 20 mph), dense fog, or temperatures over 90°F. Surveys should be conducted in the morning one hour before sunrise to two hours after sunrise or in the early evening two (2) hours before sunset to one (1) hour after sunset. Surveys were conducted during appropriate hours and weather conditions (Table 1).
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Figure 6
Burrowing Owl Survey Area
(Aerial obtained from Google Earth, August 2018)
Alpine Meadows Lane, City of Riverside
Riverside County, California
L&L Environmental, Inc.
BIOLOGICAL AND CULTURAL
INVESTIGATIONS AND MONITORING
QUIN-05-752
Project Area
Burrowing Owl Transects
Burrowing Owl Survey Buffer
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3.4) Desktop Analysis
Recent and historical aerial images (Google Earth 2021, NETRonline 2021) dated from 1948 to 2020 were examined to review the condition of the parcel and the extent of the drainages within Prenda Arroyo over time.
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4.0) RESULTS
4.1) Literature Review Results
The site is located within the area covered by the MSHCP but is not within the Criteria Area (i.e., Criteria Cells). Public/Quasi-Public (PQP) Conserved Lands identified as Alessandro Arroyo Big Bend are one mile to the east of the site. There are no other PQP or MSHCP Conserved Lands within a mile of the site. The site is not within or near any MSHCP Core Areas or Linkages (Figure 7). Surveys required by the MSHCP are a habitat assessment to address riparian/riverine and vernal pool habitats and associated species and burrowing owl.
An MSHCP Consistency Analysis is typically required when a property falls within one or more MSHCP Criteria Cell(s). The Project site is not within a Criteria Cell; however, the Conceptual Development Review from the City of Riverside (dated May 26, 2021) lists a Consistency Analysis as a project requirement and it is included under separate cover.
The site is largely within the mapped extent of the Prenda Arroyo, although the Project disturbance area is not within the watercourse as it currently exists (see Section 4.6).
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Figure 7. MSHCP Cores and Linkages
Project Site
Proposed Cores & Habitat Blocks:
Core
Proposed Extension of Existing Cores
Noncontiguous Habitat Block
Proposed Linkages:
Constrained Linkage
Linkage
Existing Cores & Linkages:
Constrained Linkage
Core
Linkage
Noncontiguous Habitat Block
Existing Channel
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4.1.1) Precipitation
Precipitation data was obtained from the Clark and Lake Mathews Remote Automated Weather Stations (RAWS) (WRCC 2021). The Clark RAWS is located about 4.0 miles southeast of the Project site at an elevation of 1,720 feet and the Lake Mathews RAWS is about 8.6 miles southwest of the site at an elevation of 1,516 feet (WRCC 2021).
Tables 2a and 2b provide precipitation data from the Clark and Lake Mathews RAWS, respectively, from October 2018 through September 23, 2021 (WRCC 2021). Total precipitation recorded by the Clark RAWS for the 2019 water year (October 2018 through September 2019) was 12.92 inches and for the 2020 water year was 12.66 inches. Precipitation for the 2021 water year (as of September 23 ) recorded at Clark was 4.80 inches. The Lake Mathews RAWS recorded 13.82 inches total precipitation for the 2019 water year and 11.90 inches for the 2020 water year. Precipitation for the 2021 water year (as of September 23) recorded at Lake Mathews was 4.15 inches. Average annual precipitation for the Project area is 5 to 10 inches (WRCC 2018).
Table 2a. Precipitation data for Clark Weather Station.
Month
Precipitation (inches)
Water Year1 (October through September)
2019 2020 2021
October 1.02 0 0
November 1.08 2.19 0.14
December 1.33 2.69 1.18
January 2.27 0.04 2.00
February 4.37 0.32 0.01
March 1.96 3.65 1.30
April 0.02 3.73 0
May 0.87 0 0*
June 0 0.04 0.07*
July 0 0 0.1
August 0 0 0
September 0 0 0**
Total 12.92 12.66 4.80*
*missing data, **as of September 23, 2021.
1 A water year is October to September. For example, the 2019 water year is October 2018 through September 2019.
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Table 2b. Precipitation data for Lake Mathews Weather Station.
Month
Precipitation (inches)
Water Year (October through September)
2019 2020 2021
October 1.02 0 0
November 0.91 1.84 0.21
December 1.29 3.04 0.98
January 2.73 0.06 1.54
February 5.47 0.23 0.05
March 1.81 3.78 1.29
April 0.03 2.91 0
May 0.56 0 0
June 0 0.04 0.01
July 0 0 0.06
August 0 0 0
September 0 0 0.01**
Total 13.82 11.90 4.15*
*missing data. **as of September 23, 2021.
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4.2) Vegetation Communities
The site , particularly the west ern portion, has been disturbed for residential use since 1947 (L&L 2006b). A review of historical aerial images (NETRonline 2021) finds that the entire parcel appears to have been completely cleared of vegetation in 1978. The site is currently occupied by developed areas and ornamental vegetation, disturbed/ruderal areas, and disturbed and relatively undisturbed brittlebush scrub (Tables 3a through 3c and Figures 8a and b).
An unnamed ephemeral streambed crosses through the southeastern portion of the site .
A mature black willow (Salix gooddingii) is present within the streambed and its trunk is just offsite at the east-central fence line. This willow’s canopy extends over the site boundary but no riparian or wetland vegetation is present on the site. There has been disturbance to the streambed, particularly on the west end. On the east end, vegetation in and along the streambed is brittlebush scrub. On the west end, it is either unvegetated or non-native and ruderal.
The MSHCP mapped vegetation layer (1994 baseline) depicts the parcel as largely coastal sage scrub with developed/disturbed land on the west end immediately surrounding the existing residence. No riparian or Riversidean alluvial fan sage scrub is mapped on the parcel in the 1994 baseline (RCA 2021).
Based on the grading limits as shown on the TPM (plus a ±20-foot buffer) and the fuel modification zone, the total impact area on Lots 2 through 4 plus the road dedication area would be 2.49 acres.
The impact area consists of 1.95 acres of disturbed/developed/ornamental areas and 0.54 acre of brittlebush scrub. No temporary impact areas are proposed and all impacts would be permanent. The TPM does not show any impacts to Lot 1 other than the road dedication area .
Areas outside the grading footprint , fuel modification zone, and road dedication area on Lots 2 through 4 will be an open space easement (Figure 8b).
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Table 3a. Vegetation communities present by lot
Vegetation Community Acres Present1
Lot 1 Lot 2 Lot 3 Lot 4 Total2
Lot
Disturbed/Developed/Ornamental 1.07 0.95 0.69 0.49 3.24 Brittlebush Scrub 0 0.12 0.38 1.65 2.15
Road Dedication Area
Disturbed/Developed/Ornamental 0.07 0.07 0.07 0.14 0.35 Brittlebush Scrub 0 0 0 0 0
Total
Disturbed/Developed/Ornamental 1.14 1.02 0.76 0.63 3.59 Brittlebush Scrub 0 0.12 0.38 1.65 2.15
TOTAL 1.14 1.14 1.14 2.28 5.74
1. Based on recorded acreage of parcel and acreages as shown on TPM. 2. Discrepancy in totals due to using recorded acreage rather than geographic acreage of parcel as required by City, as well as lot acreages as shown on the TPM.
Table 3b. Vegetation communities impacted by lot
Vegetation Community Acres Impacted1
Lot 1 Lot 2 Lot 3 Lot 4 Total
Lot (grading area plus fuel modification zone)
Disturbed/Developed/Ornamental 0 0.67 0.55 0.38 1.60
Brittlebush Scrub 0 0.10 0.11 0.33 0.54
Road Dedication Area
Disturbed/Developed/Ornamental 0.07 0.07 0.07 0.14 0.35 Brittlebush Scrub 0 0 0 0 0
Total
Disturbed/Developed/Ornamental 0.07 0.74 0.62 0.52 1.95 Brittlebush Scrub 0 0.10 0.11 0.33 0.54
TOTAL 0.07 0.84 0.73 0.85 2.49
1. Based on impact areas as shown on TPM plus a 20-foot buffer. Minor discrepancies in totals due to rounding error.
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Table 3c. Open space easement by lot
Vegetation Community Acres1
Lot 1 Lot 2 Lot 3 Lot 4 Total2
Open space easement
Disturbed/Developed/Ornamental 0 0.28 0.14 0.11 1.64
Brittlebush Scrub 0 0.02 0.27 1.32 1.61
TOTAL 0 0.30 0.41 1.43 3.25
1. Based on TPM and fuel mod plan. 2. Any discrepancy in totals due to using recorded acreage rather than geographic acreage of parcel as required by City, as well as lot acreages as shown on the TPM, and rounding error.
4.2.1) Brittlebush Scrub
Patches of coastal scrub vegetation are present in the eastern, southeastern, and south-central portions of the site (Figure 8). Brittlebush (Encelia farinosa) is the dominant shrub associated with this vegetation community on the site and it is best characterized as brittlebush scrub (Encelia farinosa Shrubland Alliance). The brittlebush scrub on the eastern and southeastern portions of the site is relatively undisturbed. The more centrally located patches of brittlebush scrub on the site have been disturbed by vehicle tracks and storage of materials, mainly around the periphery of the patches.
Additional perennials associated with this community include California buckwheat ( Eriogonum fasciculatum), California sagebrush ( Artemisia californica ), white sage ( Salvia apiana ), and cudweed aster ( Corethrogyne filaginifolia var. filaginifolia ). Other native perennials present include blue elderberry (Sambucus nigra ssp. cerulea ) and Anderson box -thorn ( Lycium andersonii). Non-native plants commonly observed include shortpod mustard ( Hirschfeldia incana), wild oat (Avena species), and red brome (Bromus madritensis ssp. rubens). Castor bean (Ricinus communis ), a non -native large shrub or small tree, is conspicuous along the southwestern and south-central site edges in alluvial soils associated with a small onsite drainage.
Brittlebush scrub is ranked as S4 ( apparently secure, uncommon but not rare ) and is not considered sensitive (CDFW 2020).
4.2.2) Disturbed/Developed/Ornamental
The disturbed/developed/ornamental portion of the property is occupied by the residence and associated structures, driveway, trees, lawn, and garden ; the two wells and the unimproved access road for the wells; trees and fencing along Alpine Meadows Lane; and the cleared area in the western and north-central areas of the site.
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Disturbed areas that are not vegetated with ornamental plants are sparsely to densely inhabited by various non-native annual plants, including non-native grasses (Bromus species and Schismus barbatus), mustards (Hirschfeldia incana and Sisymbrium irio), Russian thistle ( Salsola tragus), tocalote ( Centaurea melitensis ), filaree ( Erodium species), horehound ( Marrubium vulgare ), cheeseweed (Malva parviflora), and tree tobacco (Nicotiana glauca).
Some native annual plants that are tolerant of disturbed places are also present and include large flower rancher’s fiddleneck (Amsinckia intermedia ), western sunflower ( Helianthus annuus ), jimsonweed (Datura wrightii), and horseweed (Erigeron canadensis).
Non-native ornamental landscaping include s Peruvian pepper tree (Schinus molle ), blue jacaranda (Jacaranda mimosifolia), eucalyptus (Eucalyptus species), pine (Pinus species), elm (Ulmus species), acacia (Acacia longifolia), crepe myrtle (Lagerstroemia species), and Mexican fan palm ( Washingtonia robusta ). Additional unidentified ornamental shrubs and smaller landscape annuals are present.
Non-native weedy plants are present in the landscaped areas and include (but are not limited to) common sow thistle ( Sonchus oleraceus ), prickly lettuce ( Lactuca serriola ), lamb's -quarters (Chenopodium album ), pineapple weed ( Matricaria discoidea ), and tumbling pigweed (Amaranthus albus).
Sawyer et al. (2009) does not provide a classification for disturbed or ornamental areas. CDFW does not assign an S rank to non -native vegetation communities and they are not considered sensitive (CDFW 2020).
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Figure 8a
Habitat with Tract Map
(Aerial obtained from Google Earth, August 2019)
Alpine Meadows Lane, City of Riverside
Riverside County, California
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Disturbed
Disturbed
Relatively
Undisturbed
Actual boundaries of arroyo within parcel
50-foot setback from arroyo
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Figure 8b
Habitat with Fuel Mod
(Aerial obtained from Google Earth, August 2019)
Alpine Meadows Lane, City of Riverside
Riverside County, California
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INVESTIGATIONS AND MONITORING
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Disturbed
Disturbed
Relatively
Undisturbed
Actual boundaries of arroyo within parcel
50-foot setback from arroyo
Fuel Modification Areas
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4.3) Plant Species
A total of 47 plant species were observed onsite during 2021 surveys2. Other ornamental species may also be present adjacent to the existing residence . A list of observed plant species is included in Appendix A. Of the 47 species, 31 (66 percent) are non-native or ornamental.
Due to the timing of the survey (June -July) and below average precipitation, additional annual plant species may be present on the site and were not detected.
No federal or state-listed or special status plant species were observed on the site during surveys.
The site is not within U.S. Fish and Wildlife Service (USFWS) designated critical habitat for any listed plant species (USFWS 2021b).
Based on the presence of mostly non -native vegetation throughout the site, disturbances associated with current and past land use, a lack of CNDDB records in the site vicinity, and results of this habitat assessment, listed and special status plant species known from the region are either absent, not expected to occur , or have a low potential f or occurrence on the site (see Appendix B), with the exception of Payson’s jewelflower (Caulanthus simulans).
Payson’s jewelflower has a low to moderate potential to occur on the site. The survey was conducted in June and July and did not adequately cover the blooming period of this annual plant.
Additional botanical surveys during the blooming period in a year with adequate rainfall could result in a revision of this potential. This species has a California Rare Plant Rank (CRPR) of 4.2 (limited distribution, moderate degree of threat) and is covered under the MSHCP and considered adequately conserved.
4.3.1) Trees
There are a number of non-native and ornamental trees on the site, mostly in association with the existing residence or along Alpine Meadows Lane . The only native tree s onsite are blue elderberry and one black willow with its trunk offsite but canopy extending over the site boundary.
There are no oak species present.
Non-native trees present are ornamental pine ( Pinus species), Peruvian pepper tree ( Schinus molle), blue jacaranda ( Jacaranda mimosifolia ), avocado ( Persea americana ), crepe myrtle (Lagerstroemia species), eucal yptus ( Eucalyptus species), pomegranate ( Punica granatum ), peach (Prunus persica), unidentified citrus (Citrus species), tree tobacco (Nicotiana glauca), elm
2 The 2006 survey report (L&L 2006a) did not include a list of observed plant species.
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(Ulmus species), and Mexican fan palm (Washingtonia robusta). There is a row of acacia trees (Acacia species) on the northern site boundary along Alpine Meadows Lane. Representative photos are included in Appendix C. A tree survey was not conducted.
4.4) Wildlife Species
A total of 32 vertebrate wildlife species (mostly birds) were detected during surveys in 2006 and 2021. No federal or state-listed endangered or threatened wildlife species were observed. A list of all observed species is included in Appendix A.
Three special status wildlife species were observed during the 2021 surveys, Cooper’s hawk (Accipiter cooperii; CDFW Watch List species) , Nuttall’s woodpecker (Picoides nutallii; USFWS Bird of Conservation Concern ), and San Diego desert woodrat ( Neotoma lepida intermedia ; CDFW Species of Special Concern). Details of these observations are provided in Table 4 and observation locations are shown on Figure 9 a. Representative photos are in Appendix C. No special status wildlife species were noted during the 2006 survey.
A Cooper’s hawk was observed on two occasions (June 22 and July 7, 2021 surveys ) perching in a tree adjacent to the existing residence ne ar the southwest corner of the site. A Nuttall’s woodpecker was heard vocalizing just offsite in Prenda Creek on June 22, 2021.
Four (4) middens (stick nests) of San Diego desert woodrat were observed in the northeast corner of the site in piles of rocks and concrete debris during the 2021 surveys (middens were not noted during the 2006 survey). The nest materials appeared weathered and there was no sign of recent activity at any of the middens. In coastal scrub habitat, the home range of this species is 0.1 to
0.5 acre (CDFW 2008). Based on the locations of the middens, the home ranges of the occupants (if present) would likely be confined to the open space easement and adjacent offsite areas to the east. Under the MSHCP, a survey is not required for San Diego desert woodrat.
Cooper’s hawk and San Diego desert woodrat are covered under the MSHCP and considered adequately conserved. Nuttall’s woodpecker is not covered under the MSHCP.
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Table 4. Special status species observed during surveys.
Species GPS Coordinates
(Decimal Degrees)
Number
Detected
Location
on Site
Elevation
(feet)
Cooper’s hawk (perching)
Accipiter cooperii 33.910084, -117.363975 1 individual
(possibly 2) Southwest 1,293
Nuttall’s woodpecker (vocalization)
Dryobates nuttallii 33.909378, -117.364299 1 individual Offsite to
southwest in
Prenda Creek
1,274
San Diego desert woodrat (midden)
Neotoma lepida intermedia
33.910660, -117.361915 1 midden Northeast
corner 1,325
33.910693, -117.361827 1 midden Northeast
corner 1,329
33.910649, -117.362019 1 midden Northeast
corner 1,321
33.910569, -117.361887 1 midden Northeast
corner 1,316
The long-term anthropogenic disturbances on the site limit the potential for listed and special status wildlife species known from the region to occur on the site. Most are absent, not expected to occur, or have a low potential for occurrence (see Appendix B). Species that have a low to moderate, moderate, or high potential to occur are:
• Crotch bumble bee (Bombus crotchii; candidate for state listing as endangered3), • Southern California legless lizard (Anniella stebbinsi; CDFW Species of Special Concern), • Orange-throated whiptail (Aspidoscelis hyperythra; CDFW Watch List species), • Coastal whiptail (Aspidoscelis tigris stejnegeri; CDFW Species of Special Concern), • Coast horned lizard (Phrynosoma blainvillii; CDFW Species of Special Concern), • Southern California rufous -crowned sparrow ( Aimophila ruficeps canescens ; CDFW Watch List species),
• Bell’s sage sparrow (Artemisiospiza belli belli; CDFW Watch List species),
3 Based on CDFW information, Crotch bumble bee was previously a candidate for state listing (C DFW 2021a, 2022), but t he Sacramento Superior Court ruled that insects are not eligible for listing under the California Endangered Species Act : Almond Alliance of California v. California Department of Fish and Wildlife, Sacramento Superior Court No. 34-2019-80003216 (Nov. 13, 2020). The California Fish and Game Commission filed an intent to appeal this decision in February 2021. On May 31, 2022, California's Third District Court of Appeal ruled that the California Endangered Species Act can protect invertebrates, including Crotch bumble bee (CFS 2022) . A State Supreme Court ruling reinstated its candidacy on September 30, 2022 (Supreme Court Case S275412).
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• California horned lark (Eremophila alpestris actia; CDFW Watch List species), • Loggerhead shrike (Lanius ludovicianus; CDFW Species of Special Concern), • Coastal California gnatcatcher ( Polioptila californica californica ; federally listed threatened, CDFW Species of Special Concern),
• Allen’s hummingbird (Selasphorus sasin; USFWS Bird of Conservation Concern), • Pallid bat (Antrozous pallidus; CDFW Species of Special Concern), • Northwestern San Diego pocket mouse ( Chaetodipus fallax fallax ; CDFW Species of Special Concern), and
• Western mastiff bat (Eumops perotis californicus; CDFW Species of Special Concern).
None of these species were observed during surveys in 2006 or 2021. These species are covered under the MSHCP and considered adequately conserved, with the exception of Crotch bum ble bee, Southern California legless lizard, Allen’s hummingbird, pallid bat, and western mastiff bat.
These five species are not covered under the MSHCP.
No evidence of bumble bee colonies was observed but a survey for invertebrate species was not conducted. Crotch bumble bee has a low to moderate potential for occurrence on the site, mainly in the avoided area.
Southern California legless lizard is a CDFW Species of Special Concern. It has a moderate potential for occurrence on the site, mainly wit hin the avoided area and particularly along the streambed.
Allen’s hummingbird is a USFWS Bird of Conservation Concern. It has a high potential to forage on the site, but the site is outside the species’ breeding range.
No evidence of bat roosting was observed but the interior of onsite structures was not included in the survey. The buildings were well maintained and no obvious gaps or holes were noted where bats could access the structures. Both pallid bat and western mastiff bat have a moderate potential to forage on the site, but a low potential to roost there.
Fairy shrimp, riparian birds, burrowing owl, and nesting birds are discussed below.
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Figure 9a
Special Status Species
(Aerial obtained from Google Earth, August 2019)
Alpine Meadows Lane, City of Riverside
Riverside County, California
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Alpine Meadows Lane
Project Area
Nuttall’s woodpecker
Cooper’s hawk
Woodrat midden
Actual boundaries of arroyo within parcel
50-foot setback from arroyo
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4.4.1) Fairy Shrimp
Soil types mapped on the site are not consistent with an alkali playa or vernal pool complex (Bauder et al 2011). Pools or depressions characteristic of vernal habitat were not observed on the site and no wetland or vernal pool plant species were present. No evidence of ponding areas (i.e., cracked soils, tire ruts, etc.) were observed on the site during surveys.
No MSHCP species listed for protection associated with riparian/riverine areas and vernal pools were observed. No fairy shrimp or fairy shrimp habitat was observed during this study.
4.4.2) Riparian Birds
Least Bell’s vireo (Vireo bellii pusillus) is state and federally listed as endangered. It is a covered species under the MSHCP and considered adequately conserved, but surveys are required in suitable habitat as described in MSHCP Section 6.1.2 and mitigation is required if the species is present. This species is migratory and breeds in California, arriving in March and departing by September or October. Males establish and defend territories in riparian woodlands and riparian scrub. Territory size ranges from 0.5 to 7.5 acres (USFWS 1998). Dense shrub cover is required for nesting.
There are 22 CNDDB documented occurrences of nesting least Bell’s vireo within five (5) miles of the site. The closest is within Prenda Arroyo, about 0.5 miles east of the site . There is no riparian habitat on the site and no suitable habitat for least Bell’s vireo. Riparian vegetation near the site includes a few isolated willows adjacent to the site on the eastern boundary and riparian vegetation in Prenda Creek, to the south of the site. The isolated willows to the east do not provide the dense cover and/or the extent of habitat required by least Bell’s vireo. The riparian vegetation in Prenda Creek south of the site includes mulefat (Baccharis salicifolia), willows (Salix species), cottonwood ( Populus fremontii ), tamarisk ( Tamarix species), castor bean ( Ricinus communis), arundo (Arundo donax), and other species. This area provides potentially suitable habitat for least Bell’s vireo.
Southwestern willow flycatcher ( Empidonax traillii extimus ) is state and federally listed as endangered. It is a covered species under the MSHCP and considered ade quately conserved, but surveys are required in suitable habitat as described in MSHCP Section 6.1.2 and mitigation is required if the species is present . This species inhabits dense riparian forests with ample numbers of willows and other associated trees and shrubs.
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There are no CNDDB documented occurrences of nesting southwestern willow flycatcher within five (5) miles of the site. There is no riparian habitat on the site and no habitat for southwestern willow flycatcher. However, there is riparian vegetation within Prenda Creek. This area consists mainly of mulefat and shrubby willows with some cottonwood trees. This offsite area provides potentially marginal habitat for southwestern willow flycatcher.
Western yellow-billed cuckoo (Coccyzus americanus occidentalis) is federally listed as threatened and state listed as endangered. It is a covered species under the MSHCP and considered adequately conserved, but surveys are required in suitable habitat as described in MSHCP Section 6.1.2 and mitigation is required if the species is present. This species inhabits extensive riparian thickets or forests with dense, low-level or understory foliage and abutting on slow-moving watercourses, backwaters, or seeps.
There is one CNDDB documented occurrences of nesting western yellow-billed cuckoo within five (5) miles of the site. This occurrence is from 1894 in the Riverside area, exact location unknown, and mapped 3.7 miles north of the site. The CNDDB lists this occurrence as extirpated by development. There is no riparian habitat on the site and no habitat for western yellow -billed cuckoo. The riparian vegetation within Prenda Creek likely does not provide the dense cover and/or the extent of habitat required by the western yellow-billed cuckoo.
There is no suitable habitat for least Bell’s vireo , southwestern willow flycatcher, or western yellow-billed cuckoo on or immediately adjacent to the site. Riparian vegetation is present in Prenda Creek to the south of the site. A protocol survey for riparian birds was not conducted, but Prenda Creek provides potentially suitable habitat for least Bell’s vireo and potentially marginal habitat for southwestern willow flycatcher . This area likely does not provide suitable habitat for western yellow-billed cuckoo.
Based on TPM 38174 and review of aerial images (Google Earth 2021), the grading areas on the Project site appear to be at least 300 feet away from the suitable riparian habitat in Prenda Creek (Figure 9b). Native riparian habitat is not present within the 300-foot buffer. The buffer includes the edge of a large clump of non -native arundo, also called giant reed (Arundo donax). Arundo is an invasive exotic species that degrades riparian habitat. It is very rarely utilized as nesting habitat by least Bell’s vireo. An extensive study in the Prado Basin found only 0.8 percent of vireo nests were located in arundo (Pike et al. 2006).
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Figure 9b
300-Foot Buffer from
Riparian
(Aerial obtained from Google Earth, August 2019)
Alpine Meadows Lane, City of Riverside
Riverside County, California
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Arundo
Native riparian vegetation
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4.4.3) Burrowing Owl
Burrowing owl (Athene cunicularia) is protected under the federal Migratory Bird Treaty Act and California Fish and Game Code and is a CDFW Species of Special Concern. It is a small, ground-dwelling owl found in open dry grassland, desert, or shrubland areas and in uncultivated agricultural areas, rangelands, and other open areas with low-growing vegetation.
Burrows are an essential element of burrowing owl habitat. Although the burrowing owl is capable of excavating its own burrows in soft soils, it typically modifies and inhabits abandoned burrows of small burrowing mammals, such as ground squirrels and pocket gophers. T he burrowing owl has also been known to use man -made structures such as cement culverts, debris piles, and other artificial burrows.
Occupancy of burrowing owl habitat can be verified at a site by observation of at least one (1) owl or sign of owl (molted feathers, cast pellets, prey remains, eggshell fragments, or excrement) at or near a burrow entrance. A site is considered occupied if at least one (1) owl has been identified onsite in the past three (3) years, because (if undisturbed) burrowing owls exhibit high site fidelity (CDFG 2012, CBOC 1993).
There are six (6) CNDDB documented occurrences of burrowing owl within five (5) miles of the Project site (CDFW 2021c). The closest is Element Occurrence (EO) #1074, located about 0.5 mile west of the site and downstream of Prenda Dam. This occurrence is from 2004 and consisted of a breeding pair. The CNDDB records it as extirpated.
EO #441 is from 1989 and consisted of one adult. It is about 2.3 miles southwest of the site. The CNDDB records this occurrence as presumed extant but (based on Google Earth aerial images) the area is now developed.
EO #1283 and 1284 were both observed at the March Air Force Base Stephens’ Kangaroo Rat Preserve in 2009. These records consist of a breeding pair with a chick and a breeding pair, respectively. These occurrences are 2.7 and 2.6 miles east of the site, respectively, and are assumed to be extant.
EO #929 is from 2006 and is about 2.9 miles southeast of the site. The record consists of one adult. Based on Google Earth aerial images, this location remains undeveloped agricultural fields and this occurrence is assumed to be extant.
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EO #1771 was observed at the Riverside Municipal Airport in 2007 and is 4.8 miles northwest of the site. This occurrence consists of two adults assumed to be a breeding pair and is assumed to be extant.
There are four (4) eBird records of burrowing owl observations within five (5) miles of the Project site (eBird 2021). One record consists of multiple observations of one to five burrowing owls from January to November 2008. The July observation was of two juveniles and one adult. This record is from the Riverside Municipal Airport and appears to be the same location as EO #1771.
The second eBird record is from December 2016 at the Ben Clark Public Training Center, about
4.0 miles southeast of the site. This record consists of one burrowing owl. The third and fourth eBird records are in close proximity to each other at or near the Sycamore Canyon Wilderness Park, about 3.1 miles northeast of the site. These records are from May 2007 and September 2013 and consist of one and two burrowing owls, respectively.
No burrowing owls , owl sign (pellets, scat, feathers, tracks, etc.), or occupied burrows were observed onsite during the 2006 survey or 2021 protocol breeding season survey. Potentially suitable burrowing owl habitat is present on the site (Figure 10), including small mammal burrows.
Potentially suitable habitat is also present within the 150-meter buffer area (Figure 6), but no owls, owl sign, or occupied burrows were observed in the buffer.
4.4.4) Nesting Birds
There is suitable habitat fo r nesting birds throughout the site . No active nests were observed during the 2021 survey but the survey was conducted after the peak of nesting season. Nesting birds may utilize trees, shrubs, and other vegetation, structures, stockpiled materials, and open ground on the site for nesting. This includes the native scrub habitat on the site as well as the disturbed/developed/ornamental areas. Nesting is likely to be limited to the more common species that are tolerant of human presence.
Most of the trees on the site are not of sufficient size to provide potential raptor nesting sites. Tall trees on the adjacent property to the west may provide raptor nesting sites. The 2006 survey found a potential raptor or raven (Corvus corax) nest on an old windmill on the site. The windmill was no longer present during the 2021 survey.
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Figure 10
Burrowing Owl Habitat
(Aerial obtained from Google Earth, August 2019)
Alpine Meadows Lane, City of Riverside
Riverside County, California
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INVESTIGATIONS AND MONITORING
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Potentially Suitable
Burrowing Owl Habitat
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4.4.5) Wildlife Corridor
Wildlife corridors link together areas of suitable wildlife habitat that are otherwise separated by rugged terrain, changes in vegetation, or human disturbance. The fragmentation of open space areas by urbanization creates isolated “islands” of wildlife habitat. In the absence of habitat linkages that allow movement to adjoining open space areas, various studies have concluded that some wildlife species, especially larger and more mobile mammals, will not likely persist over time in fragmented or isolated habitat areas because movement barriers prohibit the infusion of new individuals and genetic information.
Wildlife movement activities usually fall into one of three movement categories: disper sal (e.g., juvenile animals dispersing from natal areas or individuals extending their range), seasonal migration, and movements related to home range activities (e.g., foraging for food or water, defending territories, or searching for mates, breeding areas, or cover).
Prenda Creek is immediately south of the site and drainages often serve as wildlife corridors and travel routes. Prenda Creek is in a largely natural state in the Project vicinity and may function as a wildlife corridor for limited local travel between currently undeveloped (but not conserved) areas to the east and west. The drainage running through the site may contribute to this limited movement through the area. TPM 38174 indicates that the drainage on the site will be avoided by the Project.
4.5) Jurisdictional Waters and Wetlands
The property is largely within the mapped extent of the Prenda Arroyo, as identified by the City of Riverside, although the Project disturbance area is not within the watercourse as it currently exists (see Section 4.6). The Prenda Arroyo includes Prenda Creek, an ephemeral drainage that is a blueline stream on U.S. Geological Survey ( USGS) maps. Prenda Creek is located about 150 feet south of the parcel (at its closest point). An ephemeral drainage that is tributary to Prenda Creek crosses the southeast portion of the parcel from east to west. This unnamed drainage is not a blueline stream. The Prenda Dam is located on Prenda Creek and is about 0.3 mile west (downstream) of the site.
A jurisdictional delineation was conducted in September 2021 and found that the streambed within the property measures 654 linear feet with an average width of 6.6 feet. The delineation found
0.46 acre of CDFW streambed and no CDFW wetlands on the parcel (Table 5a and Figure 11).
Of this area, 0.088 acre is also federal Waters of the U.S. There are no federal wetlands (Table 5b and Figure 11).
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There has been disturbance to the drainage, particularly on the west end. On the east end, vegetation in and along the drainage is brittlebush scrub. On the west end, it is either unvegetated or non-native and ruderal. Photos of the drainage are provided in Appendix C.
Impacts to jurisdictional waters require permits from the USACE, RWQCB, and CDFW. However, TPM 38174 indicates that the Project will avoid the jurisdictional area and permits would therefore not be required.
4.5.1) MSHCP Riparian/Riverine and Vernal Pool Habitat The jurisdictional delineation found 0.46 acre of MSHCP riverine habitat and no MSHCP riparian habitat on the site. Impacts to MSHCP riverine habitat requires preparation of a Determination of Biologically Equivalent or Superior Preservation (DBESP). TPM 38174 indicates that the Project will avoid the jurisdictional area. Therefore, the Project would not impact MSHCP riparian/riverine habitat and a DBESP is not required (Table 5a and Figure 11).
Table 5a. CDFW streambed/MSHCP riverine habitat
Point Average
Width (ft)
Square Feet
(Acres)
Type of
Waters
Latitude
Longitude
HGM
Code Comment
State 1 6.625 20,222
(0.46)
Riverine
Streambed
Unveg/disturbed
33.963021°
-117.033852° Riverine Flood
Facility
Table 5b. USACE/RWQCB jurisdiction
Point Average
Width (ft)
Length
(ft)
Square Feet
(Acres)
Type of
Waters
Latitude
Longitude
HGM
Code Comment
R1 5.863 654 3,834.40
(0.088)
Riverine
Unveg/disturbed
33.963021°
-117.033852° Riverine Flood
Facility
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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PLACEHOLDER FOR JD MAP
Figure 11
Jurisdictional Delineation
(Aerial obtained from Google Earth, August 2019)
Alpine Meadows Lane, City of Riverside
Riverside County, California
L&L Environmental, Inc.
BIOLOGICAL AND CULTURAL
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CDFW Streambed / MSHCP Riverine
Federal Waters of the U.S.
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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4.6) Prenda Arroyo
4.6.1) Background
The following section is summarized from the Open Space and Conservation Element of the City of Riverside General Plan (Riverside 2012).
The arroyos of the City of Riverside are naturally occurring ephemeral drainages created over thousands of years as seasonal rains eroded the hills. The arroyos support wildlife species and plant communities. The arroyos also provide corridors which wildlife use to migrate between habitat areas.
Urban expansion has infringed upon the arroyos and consequences include e xcessive grading, encroachment into the logical natural stream channel, increased urban runoff, and conflicts created by pets and invasive exotic plants. Proposition R and Measure C served to protect the arroyos within the City of Riverside from urban encroachment, pollutants, and erosion.
In 1979, Riverside voters approved Proposition R: “Taxpayer’s Initiative to Reduce Costly Urban Sprawl by Preserving Riverside’s Citrus and Agricultural lands, Its Unique Hills, Arroyos and Victoria Avenue.” In 1987, Riverside voters passed Measure C, a bolstering amendment to Proposition R, entitled “Citizens’ Rights Initiative to Reduce Costly Urban Sprawl, to Reduce Traffic Congestion, to Minimize Utility Rate Increases and to Facilitate Preservation of Riverside’s Citrus and Agricultural Lands, its Scenic Hills, Ridgelines, Arroyos and Wildlife Areas”.
Six arroyos, recognized by the City's Grading Code (Title 17), traverse the City, including Prenda Arroyo. The Prenda Arroyo originates in the southerly hills of Riv erside and flows to the Santa Ana River. It is considered to be largely in a natural condition south of the 91 Freeway within the Arlington Heights Greenbelt and Alessandro Heights area 4. The Arroyo is constrained by the Prenda Dam.
Past development practices have substantially reduced habitat for wildlife species and severed connections to larger habitat areas. Development has also deteriorated the quality of the water in the arroyos and caused erosion of the stream banks. As a result, valuable biological resources are mostly limited to major open spaces within and adjacent to the City limits, including Santa Ana River Regional Park, Box Springs Mountain Reserve, the Alessandro Hills, the Woodcrest and Prenda Arroyos, and Mockingbird Canyon.
4 The project site is within the Alessandro Heights area.
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Under Ob jective OS-5 of the City of Riverside General Plan (Protect biotic communities and critical habitats for endangered species), Policy OS-5.1 is intended to preserve significant habitat and environmentally sensitive areas, including hillsides, rock outcroppi ngs, creeks, streams, viewsheds and arroyos through application of the RC Zone standards and the Hillside/Arroyo standards of the City’s Grading Code. Under Objective OS-6 of the General Plan (Preserve and maintain wildlife movement corridors), Policy OS -6.3 is intended to preserve the integrity of Riverside’s arroyos and riparian habitat areas through the preservation of native plants.
As shown in Figure 4, most of the parcel is within the mapped extent of the Prenda Arroyo except for a portion of the nor theast quadrant and a small area of the southeast corner. However, the Project disturbance area is not within the watercourse as it currently exists (Figures 12a and 12b).
4.6.2) Historical Conditions
Review of historic aerial images and other records (L&L 2006b) shows that the western portion of the parcel has been developed for residential use since 1947. The parcel appears to have been completely cleared of vegetation in 1978 but vegetation had reestablished by 1994 (NETRonline 2021). The cleared area currently present in the western and north-central areas of the site is first apparent in 2004 (Google Earth 2021) although it increases in size over time. The road between the wells is also first visible in 2004 . The drainage through the site appears to be essentially in its current topography since at least 1967 (Figures 13a through 13f) (Google Earth 2021, NETRonline 2021).
The Prenda Dam (CA00799) is located about 0.3 mile west and downstream of the site on Prenda Creek, the blueline stream that flows to the south of the parcel. It is an earthen dam constructed in 1954 for flood control (US National Dams 2021). It is 1,313 feet long, 44 feet high, and has a storage capacity of 192 acre-feet. It is operated by the Riverside County Flood Control and Water Conservation District (RCFCD).
4.6.3) Current Conditions
Section 17.08.011 of the City of Riverside Municipal Code defines arroyos as:
"Arroyo" shall mean those areas shown within the limits of the Mockingbird Canyon, Woodcrest, Prenda, Alessandro, Tequesquite, or Springbrook Arroyos and associated tributaries as shown on Exhibits A -F of this title. The limits of these arroyos and arroyo tributaries shall include all the land within the water course area, the adjacent slopes REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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having an average natural slope of 30 percent or greater, and all other areas within the boundaries shown on Exhibits A-F of this title.
The Project disturbance area is not within the watercourse as it currently exists and where it has been since at least 196 7. The criteria used by the City to map the arroyo are not known but assumed to rely on factors such as topography, hydrology, soils, vegetation, and the historical extent of the watercourse.
The provisions for hillside/arroyo grading as defined in Section 17.28.020 of the Municipal Code apply to all excavation and grading of any land w ithin or adjacent to the boundaries of Prenda Arroyo. This Section states in part, “ No development or grading of any kind shall be permitted within 50 feet of the limits of the Mockingbird Canyon, Woodcrest, Prenda, Alessandro, Tequesquite, or Springbrook Arroyos and associated tributaries as shown on Exhibits A-F. The Community & Economic Development Director shall have the authority to administratively allow grading within designated arroyo tributaries depending on the sensitivity of the area. Sensitivity shall be determined by such factors as the presence of riparian vegetation, habitat for rare or endangered species, significant rock outcroppings or other unique topographic features on the property proposed to be graded or in nearby segments of the same tributary.” Riparian Vegetation
There is no riparian vegetation on the site, with the exception of one willow tree. The trunk of this willow is offsite, but its canopy overhangs the eastern site boundary. Based on TPM 38174, this area is within the open space easement and this willow will not be impacted. The only native habitat on the site is brittlebush scrub , a type of coastal scrub, which is uncommon but not rare and is not considered a sensitive vegetation community (CDFW 2020). Project grading would impact 19 percent of the brittlebush scrub on the site and avoid 81 percent. All of the brittlebush scrub within the grading area is disturbed and all of the relatively undisturbed brittlebush scrub would be avoided.
Riparian vegetation is present within Prenda Creek to the south of the site. Based on TPM 38174 and review of aerial images (Google Earth 2021), the grading areas on the Project site (plus a 20- foot buffer) appear to be at least 300 feet away from the native riparian habitat in Prenda Creek.
Habitat for Rare or Endangered Species
Most listed and special status plant and wildlife species known from the region are either absent, not expected to occur, or have a low potential for occurrence on the site . There are a few REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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exceptions (see Sections 4.3 and 4.4), but most are covered under the MSHCP and considered adequately conserved. Recommended mitigation would avoid and m inimize any potential impacts (Mitigation Measure BIO -1 [Burrowing Owl], Mitigation Measure BIO -2 [Nesting Birds], Mitigation Measure BIO-3 [Crotch Bumble Bee], and Mitigation Measure BIO -4 [Riparian Birds]; see Sections 5.0 and 6.0).
Rock Outcrops and Unique Topographic Features
Several rock piles are present on the northeastern corner of the site, including concrete debris.
The rock piles are visible in aerial photographs going back to 1967 before the surrounding area was developed and ap pear to be naturally occurring outcrops. These rock piles are relatively small and would not appear to be unique or significant topographic features, and they are located on the open space easement.
Figure 14 a shows the topography of the parcel. Based on the topographic map, t he slopes adjacent to the actual boundaries of the arroyo reach a maximum of approximately 24 percent at the eastern end of the parcel and decrease to about 10.5 percent at the western end of the parcel.
There are no slopes outside of the actual boundaries of the arroyo within the parcel (as shown on Figures 12a, 12b, and 14) that have an average natural slope of 30 percent or greater. A slope analysis (Figure 14b) found that slopes a djacent to the actual boundaries of the arroyo are less than 30 percent with the exception of two small areas (about 7 60 square feet total) in the southeastern corner of the parcel, which is not proposed for development.
Summary
The site does not include riparian habitat or other sensitive vegetation communities and none would be impacted by Project grading. The rock piles on the site do not appear to be unique or significant topographic features and would not be impacted by the Project.
Most special status species with potential to occur on the site are covered under the MSHCP and considered adequately conserved. Recommended mitigation s would avoid and minimize any potential impacts (Mitigation Measure BIO-1 [Burrowing Owl], Mitigation Measure BIO-2 [Nesting Birds], Mitigation Measure BIO-3 [Crotch Bumble Bee], and Mitigation Measure BIO -4 [Riparian Birds]; see Sections 5.0 and 6.0).
Based on the watercourse, topography, and vegetation, the actual boundaries of the arroyo are not consistent with the mapped extent of the arroyo in the Grading Code and do not include the Project disturbance area (Figures 12a and 12b).
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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Figure 12a
Actual Boundaries of
Arroyo within the Parcel
(Aerial obtained from Google Earth, August 2019)
Alpine Meadows Lane, City of Riverside
Riverside County, California
L&L Environmental, Inc.
BIOLOGICAL AND CULTURAL
INVESTIGATIONS AND MONITORING
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Mapped extent of arroyo (per Grading Code)
Actual boundaries of arroyo within parcel
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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Figure 12b
Actual Boundaries of
Arroyo and Project Impact
Area
(Aerial obtained from Google Earth, August 2019)
Alpine Meadows Lane, City of Riverside
Riverside County, California
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BIOLOGICAL AND CULTURAL
INVESTIGATIONS AND MONITORING
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Mapped extent of arroyo (per Grading Code)
Actual boundaries of arroyo within parcel
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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Figure 13a
Actual Boundaries of
Arroyo and 1967 Aerial
Photo
(Aerial obtained from NETRonline, 1967)
Alpine Meadows Lane, City of Riverside
Riverside County, California
L&L Environmental, Inc.
BIOLOGICAL AND CULTURAL
INVESTIGATIONS AND MONITORING
QUIN-05-752
Actual boundaries of arroyo within parcel
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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Figure 13b
Actual Boundaries of
Arroyo and 1978 Aerial
Photo
(Aerial obtained from NETRonline, September 1978)
Alpine Meadows Lane, City of Riverside
Riverside County, California
L&L Environmental, Inc.
BIOLOGICAL AND CULTURAL
INVESTIGATIONS AND MONITORING
QUIN-05-752
Actual boundaries of arroyo within parcel
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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Figure 13c
Actual Boundaries of
Arroyo and 1994 Aerial
Photo
(Aerial obtained from Google Earth, May 1994)
Alpine Meadows Lane, City of Riverside
Riverside County, California
L&L Environmental, Inc.
BIOLOGICAL AND CULTURAL
INVESTIGATIONS AND MONITORING
QUIN-05-752
Actual boundaries of arroyo within parcel
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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Figure 13d
Actual Boundaries of
Arroyo and 2002 Aerial
Photo
(Aerial obtained from Google Earth, May 2002)
Alpine Meadows Lane, City of Riverside
Riverside County, California
L&L Environmental, Inc.
BIOLOGICAL AND CULTURAL
INVESTIGATIONS AND MONITORING
QUIN-05-752
Actual boundaries of arroyo within parcel
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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Figure 13e
Actual Boundaries of
Arroyo and 2009 Aerial
Photo
(Aerial obtained from Google Earth, November 2009)
Alpine Meadows Lane, City of Riverside
Riverside County, California
L&L Environmental, Inc.
BIOLOGICAL AND CULTURAL
INVESTIGATIONS AND MONITORING
QUIN-05-752
Actual boundaries of arroyo within parcel
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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Figure 13f
Actual Boundaries of
Arroyo and 2016 Aerial
Photo
(Aerial obtained from Google Earth, February 2016)
Alpine Meadows Lane, City of Riverside
Riverside County, California
L&L Environmental, Inc.
BIOLOGICAL AND CULTURAL
INVESTIGATIONS AND MONITORING
QUIN-05-752
Actual boundaries of arroyo within parcel
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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Figure 14a. Topography of the Parcel (source: Riverside County Information Technology, Map My County v10). Actual boundaries of the arroyo are shown in blue outline; the 50-foot setback from the arroyo is shown by the white line.
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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Figure 14b. Slope Analysis of the Parcel (source: Ackerman Associates 2000, Inc.). Actual boundaries of the arroyo are shown in blue outline; the 50-foot setback from the arroyo is shown by the white line. Legend is below.
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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5.0) ANALYSIS OF POTENTIAL EFFECTS
The following discussion examines potential impacts to biological resources that may occur as a result of implementation of the proposed Project. Impacts can be direct, indirect, or cumulative.
Direct impacts are those that are caused by a project and occur at the same time and place.
Indirect effects are reasonably foreseeable and caused by a project but occur at a different time or place. Cumulative impacts are two or more individual effects which, when considered together, compound or increase other environmental impacts. The cumulative impact from several projects is the change in the environment that results from the incremental impact of the project when added to other closely related past, present, and reasonably foreseeable probable future projects.
Cumulative impacts can result from individually minor, but collectively significant projects taking place over a period of time.
Direct impacts include the loss, modification, or disturbance of vegetation communities, which in turn, directly affect plant and wildlife species dependent on those habitats, as well as the destruction of individual plants or wildlife. Direct impacts also include any effects that result from vegetation or ground disturbing activitie s during construction, including associated dust, noise and vibration, etc.
Indirect impacts are the result of such things as introduction of invasive plants and animals; predator subsidies (i.e., food, water, perch sites, etc.) that lead to increased predation on wildlife; and harassment or predation by domestic animals. These impacts may change the behavioral patterns of wildlife and reduce native plant and wildlife diversity and abundance in habitats adjacent to project sites.
Under the CEQA Guideli nes (2018 revision), project impacts on biological resources are potentially significant if one or more of the following conditions would result from implementation of the proposed Project:
a) 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. b) A substantial adverse effect on any riparian habitat or other sensitive nat ural community identified in local or regional plans, policies, and regulations or by the CDFW or USFWS. c) A substantial adverse effect on state or federally protected wetlands as defined by Section 404 of the Clean Water Act (including, but not limited to, marsh, vernal pool, coastal, etc.) direct removal, filling, hydrological interruption, or other means.
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d) Interfere substantially with the movement of any native resident or migratory fish or wildlife species or with established native resident or migratory w ildlife corridors, or impede the use of native wildlife nursery sites.
e) Conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance.
f) Conflict with the provisions of an adopted Habitat Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or state habitat conservation plan.
This section describes the Project’s expected impacts to biological resources . Proposed mitigation measures to avoid, minimize, and c ompensate for those impacts are listed in Section 6.0.
5.1) Listed and Special Status Species
5.1.1) Listed and Special Status Plants
No federal or state-listed plant species were observed on the site during surveys. The site is not within USFWS designated critical habitat for any federally listed plant species . Based on the presence of mostly non -native vegetation throughout the site, disturbances associated with current and past land use, a lack of CNDDB records in the site vicinity, and results of the habitat assessment, federal or state -listed plant species kn own from the region are either absent, not expected to occur, or have a low potential for occurrence on the site. Impacts to federal or state- listed plants would be less than significant and no mitigation is proposed.
No special status plant species were observed on the site during surveys . Special status plant species known from the region are either absent, not expected to occur, or have a low potential for occurrence on the site, with the exception of Payson’s jewelflower. Impacts to special status plants other than Payson’s jewelflower would be less than significant and no mitigation is proposed.
Payson’s jewelflower was not observed on the site but has a low to moderate potential to occur.
This species has a California Rare Plant Rank of 4.2 (limit ed distribution, moderate degree of threat) and is covered under the MSHCP and considered adequately conserved. The MSHCP does not require focused surveys or mitigation for this species.
If Payson’s jewelflower is present, implementation of the Project co uld impact these plants through loss of habitat and loss of individuals within the disturbance area . Since Payson’s jewelflower is a covered species under the MSHCP and considered adequately conserved, REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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Project-related impacts to Payson’s jewelflower , if a ny, would be a covered impact under the MSHCP and no mitigation is proposed.
5.1.2) Listed and Special Status Wildlife
Burrowing Owl
Burrowing owl has not been detected on the site during surveys, although potentially suitable habitat is present. Because burrowing owls will tend to shelter in their burrows rather than flee from disturbance, adults as well as juveniles or eggs could be harmed by Project activities.
Mitigation Measure BIO-1 (Burrowing Owl) requires a preconstruction survey for burrowing owl, avoidance buffers if any owls are present during nesting season, and other mitigation as required by the MSHCP . With implementati on of this mitigation measure, Project -related impacts to burrowing owl would be less than significant.
Nesting Birds
There is potential habitat for nesting birds, including raptors, on and adjacent to the site. Adult birds will typically avoid or flee from construction activities and other disturbance and the potential for physical harm would be limited to nests, eggs, and dependent juveniles.
Mitigation Measure BIO-2 (Nesting Birds) requires site disturbance to occur outside of the nesting season. If this work cannot be scheduled outside of the nesting season, a preconstruction nesting bird survey is required and a voidance buffers will be established for any active nests. With implementation of this mitigation measure, Project-related impacts to nesting birds would be less than significant.
Crotch Bumble Bee
Crotch bumble bee was originally advanced to candidacy for state listing in June 2019. This status was challenged in court and a trial court decision temporarily removed its candidacy in February 2021. A State Supreme Court ruling reversed this judgement and reinstated its candidacy on September 30, 2022 (Supreme Court Case S275412). The latest information from CDFW indicates that Crotch bumble bee is a candidate for state listing as endangered. This species was not observed on the site but surveys for invertebrates were not conducted. Crotch bumble bee has a low to moderate potential for occurrence on the site, mainly in the avoided area.
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Mitigation Measure BIO-3 (Crotch Bumble Bee) requires a qualified biologist to conduct a focused survey for Crotch bumble bee on the site. If the survey finds that the species is present on the site, consultation with CDFW is required. If Crotch bumble bee will be impacted by the Project, an incidental take permit will be obtained prior to Project impacts as required by CDFW. With implementation of this mitigation measure, Project -related impacts to Crotch bumble bee would be less than significant.
Riparian Birds
There is no suitable habitat for riparian birds (least Bell’s vireo, so uthwestern willow flycatcher, and western yellow billed cuckoo ) within or immediately adjacent to the Project site, and the grading limits are over 300 feet away from potentially suitable habitat in Prenda Creek to the south of the site. Project-related impacts to these species, if any, would be less than significant.
However, impacts to these species are possible (i.e., noise and disturbance) if the Project grading plans are revised and will encroach within a 300-foot buffer of the riparian habitat in Prenda Creek to the south of the Project site. If this occurs, Mitigation Measure BIO-4 (Riparian Birds) requires either avoidance of the nesting season or a habitat assessment and a protocol survey if suitable habitat is present. If a protocol survey finds any of these species present within 300 feet of the Project disturbance area, additional avoidance and minimization measures are required.
With implementation of Mitigation Measure BIO-4 (Riparian Birds), Project-related impacts to least Bell’s vireo, southwestern willow flycatcher, and western yellow billed cuckoo would be less than significant.
Other Listed and Special Status Wildlife Species
No state or federally listed wildlife species were observed during surveys. Three special status wildlife species were detected on the site during surveys (Cooper’s hawk, Nuttall’s woodpecker, and San Diego desert woodrat) and several others were not detected but have a low to moderate, moderate, or high potential to occur (see Section 4.4). Most of these species are covered under the MSHCP and considered adequately conserved , with the exception of Crotch bumble bee (discussed above), Southern California legless lizard, Allen’s hummingbird, Nuttall’s woodpecker, pallid bat, and western mastiff bat.
Impacts to nesting birds are addressed by Mitigation Measure BIO-2 (Nesting Birds) as described above. Other Project-related impacts to the MSHCP covered species, if any, would be a covered REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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impact under the MSHCP. The MSHCP does not require surveys or mitigation for any of these species and no mitigation is proposed.
Southern California legless lizard is a CDFW Species of Special Conce rn. It has a moderate potential for occurrence on the site, mainly within the avoided area and particularly along the streambed. Impacts to this species, if present in the Project’s disturbance area, would not be expected to substantially affect regional populations. Project -related impacts to southern California legless lizard would be less than significant and no mitigation is proposed.
Allen’s hummingbird is a USFWS Bird of Conservation Concern. It has a high potential to forage on the site, but the site is outside the species’ breeding range. Adult birds will typically flee from disturbance and injury/mortality would be limited to nests, eggs, and chicks. Since this species does not nest in the area, there would be no potential for injury/mortali ty. Potential foraging habitat for this species is common throughout the region and loss of the habitat on the site would be a less-than-significant impact. Project-related impacts to Allen’s hummingbird would be less than significant and no mitigation is proposed.
Nuttall’s woodpecker is a USFWS Bird of Conservation Concern. It was observed offsite in Prenda Creek. Adult birds will typically flee from disturbance and injury/mortality would be limited to nests, eggs, and chicks. Impacts to nesting birds are addressed by Mitigation Measure BIO-2 (Nesting Birds), described above.
Both pallid bat and western mastiff bat have a moderate potential to forage on the site, but a low potential to roost there. Potential foraging habitat for these species is common throughout the region and loss of the habitat on the site would be a less-than-significant impact. Project-related impacts to special status bats would be less than significant and no mitigation is proposed.
5.2) Vegetation Communities
Implementation of the Project will resul t in the permanent loss of ± 2.49 acres of vegetation communities on the Project consisting of 1.95 acres of disturbed/developed/ornamental vegetation and 0.54 acre of brittlebush scrub (Table 6). No sensitive vegetation communities are present.
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Table 6. Vegetation Communities Impacted
Vegetation Community Acres Impacted1
Lot 1 Lot 2 Lot 3 Lot 4 Total
Lot (grading area plus fuel modification zone)
Disturbed/Developed/Ornamental 0 0.67 0.55 0.38 1.60
Brittlebush Scrub 0 0.10 0.11 0.33 0.54
Road Dedication Area
Disturbed/Developed/Ornamental 0.07 0.07 0.07 0.14 0.35 Brittlebush Scrub 0 0 0 0 0
Total
Disturbed/Developed/Ornamental 0.07 0.74 0.62 0.52 1.95 Brittlebush Scrub 0 0.10 0.11 0.33 0.54
TOTAL 0.07 0.84 0.73 0.85 2.49
1. Based on grading limits as shown on TPM (plus a ±20-foot buffer) and the fuel modification zone. Minor discrepancies in totals due to rounding error.
Disturbed/ruderal/ornamental areas are not native vegetation communities and the loss of 1.95 acres of these areas would have no impact on the extent of native vegetation communities in the region. No mitigation is proposed.
Brittlebush scrub is not a sensitive vegetation community and is ranked by CDFW as S4 (apparently secure, uncommon but not rare). This vegetation community is found throughout most of Riverside County as well as other southern California counties (Sawyer et al. 2009).
There would be no impacts to sensitive vegetation communities and no mitigation is proposed.
5.3) Waters and Wetlands
A jurisdictional delineation found that the streambed within the parcel includes 0.46 acre of CDFW streambed and no CDFW wetlands. Of this area, 0.088 acre is also federal Waters of the U.S.
There are no federal wetlands. TPM 38174 indicates that the Project will avoid the jurisdictional area. Therefore, the Project will not impact state or federal jurisdictional waters or wetlands on the site , permits from USACE, RWQCB, and CDFW are not req uired, and no mitigation is proposed.
5.4) Wildlife Corridors
Prenda Creek is in a largely natural state in the Project vicinity and may function as a wildlife corridor for limited local travel between currently undeveloped (but not conserved) areas to the east and west. An ephemeral drainage that is tributary to Prenda Creek and crosses the REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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southeast portion of the project site from east to west may contribute to this limited movement through the area. The proposed Project will avoid this drainage. Project-related impacts to wildlife corridors would therefore be less than significant and no mitigation is proposed.
5.5) Local Ordinances
Prenda Arroyo
Section 17.28.020 of the City of Riverside Municipal Code prohibits development or grading within 50 feet of the limits of the Prenda Arroyo . The limits of the arroyo are defined and mapped in Section 17.08.011 of the Municipal Code (see Section 2.11).
Most of the Project parcel is within the mapped extent of the Prenda Arroyo except for a portion of the northeast quadrant and a small area of the southeast corner. However, b ased on the watercourse, topography, and vegetation, the actual boundaries of the Prenda Arroyo are not consistent with the mapped extent of the arroyo in Section 17.08.011 and do not include the Project disturbance area.
The Project will avoid the actual boundaries of the Prenda Arroyo within the parcel and no mitigation is proposed.
Trees
Based on TPM 38174, no trees within the site would be impacted by the Project. However, the row of acacia trees along Alpine Meadows Lane could be impacted. A tree survey has not been conducted but a desktop review indicates 39 acacia trees are present.
In accordance with Section 13.25.020 of the City of Riverside Code of Ordinances , any project within the City of Riverside that will impact trees on City property must follow the Urban Forestry Policy Manual (see Section 2.12).
If tree trimming, encroachment, or removal will occur during the nesting season (February 1 to August 31), preconstruction nesting bird surveys will be required as detailed in Mitigation BIO -2 (Nesting Birds).
5.6) Habitat Conservation Plan
The Project is within the covered area for the Western Riverside County Multiple Species Habitat Conservation Plan (MSHCP). The site is located within the area covered by the MSHCP but is REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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not within the Criteria Area (i.e., Criteria Cells). Surveys required by the MSHCP are a habitat assessment to address riparian/riverine and vernal pool habitats and associated species and burrowing owl.
MSHCP Riparian/Riverine
A jurisdictional delineation was conducted in 2021 to assess MSHCP riparian/riverine habitat on the site (see Section 4.5.1). The jurisdictional delineation found 0.46 acre of MSHCP riverine habitat and no MSHCP riparian habitat on the site. Impacts to MSHCP riverine habitat requires preparation of a Determination of Biologically Equivalent or Superior Preservation (DBESP).
However, the Project will avoid the MSHCP riverine habitat and a DBESP is therefore not required. There would be no conflict with the MSHCP and no mitigation is proposed.
Vernal Pools
An assessment for vernal pool habitat was conducted in 2021 (see Section 4.4.1). Pools or depressions characteristic of vernal habitat were not observed and there was n o evidence of ponding areas (i.e., cracked soils, tire ruts, etc.) on the site during surveys. No MSHCP species listed for protection associated with vernal pools were observed. No fairy shrimp or fairy shrimp habitat was observed. There would therefore be no impacts to vernal pool habitat or associated species, no conflict with the MSHCP, and no mitigation is proposed.
Riparian Birds
See Section 5.1.2 for a discussion of riparian birds. With implementation of Mitigation Measure BIO-4 (Riparian Birds), Project-related impacts to least Bell’s vireo, southwestern willow flycatcher, and western yellow billed cuckoo would be less than significant and there would be no conflict with the MSHCP.
Burrowing Owl
A habitat assessment and p rotocol breeding season survey for burrowing owl was conducted in 2021 (see Section 4.4.3). The survey found that potentially suitable habitat for burrowing owl is present but no owls or owl sign were observed. Under the MSHCP, a preconstruction survey is required within 30 days prior to the start of Project activities and additional mitigation is required if burrowing owl is present as described in Mitigation Measure BIO -1 (Burrowing Owl). With implementation of this mitigation measure, there would be no conflict with the MSHCP.
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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6.0) SUMMARY AND RECOMMENDATIONS
The purpose of this study was to identify biological resources present or potentially present onsite, determine the current condition and extent of the jurisdictional drainage within the parcel, and analyze the impact area with respect to the Prenda Arroyo. Measures are proposed to avoid, minimize, and compensate for Project-related impacts on biological resources.
The MSHCP requires a habitat assessment to address riparian/riverine and vernal pool habitats and associated species and burrowing owl , and focused surveys if suitable habitat is present .
L&L also analyzed the potential for impacts to state and federal jurisdictional waters, special status species, and sensitive vegetation communities. The recommendations are based on the literature review, L&L’s knowledge of species and habitats in the region, the biological field survey, and analysis of aerial images.
The site is within the area covered by the MSHCP but is not located within the MSHCP Criteria Area (i.e., Criteria Cells). PQP Conserved Lands identified as Alessandro Arroyo Big Bend are one mile to the east of the site. There are no other PQP or MSHCP Conserved Lands within a mile of the site. The site is not within or near any MSHCP Core Areas or Linkages.
Listed and Special Status Plants
No federal or state -listed or special status plant species were observed. The site is not within USFWS designated critical habitat for any federally listed plant species. Listed and special status plants known from the region are either absent, not expected to occur, or have a low potential for occurrence onsite, with the exception of Payson’s jewelflower. Impacts to listed and special status plants (other than Payson’s jewelflower) would be less than significant and no mitigation is proposed. Payson’s jewelflower is covered under the MSHCP and considered adequately conserved. Project-related impacts to Payson’s jewelflower, if any, would be a covered impact under the MSHCP and no mitigation is proposed.
Burrowing Owl
There is potentially suitable habitat for burrowing owl onsite, but no burrowing owls, occupied burrows, or owl sign were observed during a protocol breeding season survey. With implementation of Mitigation Measure B IO-1 (Burrowing Owl) , Project -related impacts to burrowing owl would be less than significant.
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MM BIO-1. Burrowing Owl
A preconstruction survey for burrowing owl shall be conducted by a qualified biologist and the results submitted to the City of Riverside within no more than 30 calendar days prior to any site disturbance, including vegetation removal or mowing, ground disturbance, fence installation, demolition, etc. The survey will be conducted as close to the actual initiation of site disturbance as possible. The survey is valid for 30 calendar days. If work does not commence within the 30 days, the survey shall be repeated. If work s tarts and is suspended for 30 or more calendar days, the survey shall be repeated.
If burrowing owls are found on the site during the preconstruction survey, the Project biologist shall consult with the City of Riverside , the Western Riverside County Regional Conservation Authority (RCA), and the California Department of Fish and Wildlife as needed to develop and implement a mitigation plan. The mitigation plan shall be based on the following goals and requirements in the MSHCP:
1. If the site contains or is part of an area supporting less than 35 acres of suitable habitat or the survey reveals that the site and the surrounding area supports fewer than three (3) pairs of burrowing owls, the onsite burrowing owls will be passively or actively relocated following accepted protocols.
a. Occupied nests shall be avoided during the nesting season (February 1 to August 31) and a buffer of 300 to 500 feet shall be employed, depending on the level of disturbance surrounding the burrow.
b. Burrow exclusion shall be ut ilized outside of the nesting season by installing a one-way door in burrow openings. The burrow shall be closed following verification that burrows are empty (through site monitoring and scoping).
c. Prior to implementation of exclusion and/or relocation, a relocation plan shall be prepared for review and approval by the California Department of Fish and Wildlife. This plan shall include, but not be limited to, the following:
• Project Overview
• Species Biology
• Summary of Burrowing Owl Surveys and Results
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• Impact Avoidance and Minimization including buffers,
monitoring during construction, worker environmental
awareness program, and other measures
• Relocation Methods including location of adjacent suitable habitat and replacement burrows, conservation and
management of relocation area, enhancement of replacement burrows and/or construction of artificial burrows, ratio of replacement burrows to removed burrows, timing of relocation, burrow exclusion, and burrow inspection and excavation of removed burrows
• Monitoring and Reporting including monitoring during and after construction, surveys, cleaning and maintenance and/or
replacement of artificial burrows, duration of monitoring, and reporting requirements
2. If the site (including adjacent areas) supports three ( 3) or more pairs of burrowing owls, supports greater than 35 acres of suitable habitat, and is noncontiguous with MSHCP Conservation Area lands, at least 90 percent of the area with long-term conservation value and burrowing owl pairs shall be conserved onsite.
Nesting Birds
There is suitable habitat for nesting birds, including raptors, on and adjacent to the site. Nesting birds are protected under state and federal laws (see Sections 2.8 and 2.9). With implementation of Mitigation Measure BIO-2 (Nesting Birds), Project-related impacts to nesting birds would be less than significant.
MM BIO-2. Nesting Birds
Site disturbance (vegetation and /or ground disturbance, tree trimming/encroachment/removal, fence installation, demolition, etc.) shall be scheduled outside of the nesting season (February 1 to August 31 ). If site disturbance cannot be scheduled outside the nesting season, a preconstruction survey for nesting birds shall be conducted by a qualified biologist within three (3) days prior to any site disturbance during the nesting season.
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If active nest(s) are present, an avoidance buffer of 500 feet for raptors and special status birds and 300 feet for all other birds (or as recommended by the biologist) shall be established and maintained until a qualified biologist has determined that the juvenile birds have fledged and are no longer dependent on the nest or the nest has otherwise become inactive. An active nest is defined as a nest with eggs, chicks, or dependent juveniles, or a nest actively being constructed or utilized for reproduction.
The size of the avoidance buffer shall be determined by the biologist based on the nature of Project activities, the birds’ tolerance to disturbance (if known), conservation status of the affected species, and any applicable agency recommendations or requirements. The boundary of the buffer shall be clearly flagged or marked, and construction crews informed of the restrictions.
Crotch Bumble Bee
Crotch bumble bee is a candidate for state listing as endangered. Under the California Endangered Species Act, candidate species receive the same protections as a listed species .
This species was not observed on the site but surveys for invertebrates were not conducted.
Crotch bumble bee has a low to moderate potential for occurrence on the site, mainly in the avoided area. With implementation of Mitigation Measure BIO-3 (Crotch Bumble Bee), Project- related impacts to this species would be less than significant.
MM BIO-3. Crotch Bumble Bee
Prior to the start of Project activities on the site (i.e., ground or vegetation distu rbing activities), a qualified biologist shall conduct a focused survey for Crotch bumble bee using the CDFW survey protocol for this species. If CDFW has not established a survey protocol for Crotch bumble bee, a focused survey shall be conducted during the appropriate season and utilizing an appropriate survey method based on the species’ biology. Survey results shall be provided to the City of Riverside and CDFW.
If the survey finds that Crotch bumble bee is present on the site, the biologist shall consult with CDFW. If the Project will impact Crotch bumble bee, an incidental take permit from the CDFW shall be obtained and/or other measures shall be implemented as required by CDFW.
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Riparian Birds
There is no suitable habitat for riparian birds (least Bell’s vireo, southwestern willow flycatcher, or western yellow-billed cuckoo) on or immediately adjacent to the site. Project site, and the grading limits are over 300 feet away from potentially suitable habitat in Prenda Creek to the south of the site. Project-related impacts to these species, if any, would be less than significant.
However, impacts to these species are possible (i.e., noise) if the Project grading plans are revised and will encroach within a 300 -foot buffer of the riparian habitat in Prenda Creek to the south of the Project site. If this occurs, with implementation of Mitigation Measure BIO-4 (Riparian Birds), Project-related impacts to least Bell’s vireo, southwestern willow flycatcher, and western yellow billed cuckoo would be less than significant.
MM BIO-4. Riparian Birds
If Project grading plans are revised such that grading is extended to the south and within a 300 -foot buffer from riparian habitat in Prenda Creek to the south, then either construction shall avoid the nesting season (February 1 to August 31) , or a habitat assessment for riparian birds (least Bell’s vireo, southwestern willow flycatcher, and western yellow-billed cuckoo) in that area shall be completed by a qualified biologist . If suitable habitat for least Bell’s vireo, southwestern willow flycatcher, or western yellow - billed cuckoo is present, then a protocol survey shall be conducted b y a qualified and permitted biologist to determine presence or absence of any of these species within 300 feet of Project disturbance areas.
If any of these species are present within 300 feet of the Project disturbance area , additional avoidance and min imization measures shall be implemented as identified by the qualified biologist in consultation with the Western Riverside County Regional Conservation Authority, California Department of Fish and Wildlife , and U.S. Fish and Wildlife Service.
Other Listed and Special Status Wildlife
No state or federally listed wildlife species were observed during surveys and none have a moderate or high potential to occur (with the exception of Crotch bumble bee as discussed above).
Impacts to state o r federal wildlife species (other than Crotch bumble bee) would be less than significant and no mitigation is proposed.
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Three special status wildlife species were detected on or near the site during surveys (Cooper’s hawk, Nuttall’s woodpecker, and San Diego desert woodrat) and several others were not detected but have a low to moderate, moderate, or high potential to occur. Most of these species are covered under the MSHCP and considered adequately conserved , with the exception of Crotch bumble bee (discussed above), Southern California legless lizard, Allen’s hummingbird, Nuttall’s woodpecker, pallid bat, and western mastiff bat.
Impacts to nesting birds are addressed by Mitigation Measure BIO -2 (Nesting Birds), discussed above. Other Project-related impacts to the MSHCP covered species, if any, would be a covered impact under the MSHCP and no mitigation is proposed.
Project-related impacts to southern California legless lizard, Allen’s hummingbird, pallid bat, and western mastiff bat would be less than significant and no mitigation is proposed.
Sensitive Vegetation Communities
The site is composed of disturbed/developed/ornamental areas and brittlebush scrub. There are no riparian, Riversidean alluvial fan sage scrub, or other sensitive vegetation communities present. There would be no impacts to sensitive vegetation communities and no mitigation is proposed.
Waters and Wetlands
A jurisdictional delineation found t hat the streambed within the property includes 0.46 acre of CDFW streambed and no CDFW wetlands. Of this area, 0.088 acre is also federal Waters of the U.S. There are no federal wetlands . TPM 38174 indicates that the Project will avoid the jurisdictional area. Therefore, the Project will not impact state or federal jurisdictional waters or wetlands on the site , permits from USACE, RWQCB, and CDFW are not required, and no mitigation is proposed.
Wildlife Corridors
The Project site is largely surrounded by roads and existing development but the drainage running through the site may contribute to limited local wildlife movement through the area. The proposed Project will avoid the drainage. Project-related impacts to wildlife corridors would therefore be less than significant and no mitigation is proposed.
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Local Ordinances: Prenda Arroyo
The site is within the mapped extent of the Prenda Arroyo in the City of Riverside Grading Code.
However, the Project disturbance area is not within the watercourse as it currently exists. The City can allow a grading exception within the mapped extent of the arroyo depending on the sensitivity of the area. Sensitivity is determined by such factor s as the presence of riparian vegetation, habitat for rare or endangered species, and significant rock outcroppings or other unique topographic features
The site does not include riparian habitat or other sensitive vegetation communities and none would be impacted by Project grading. The rock piles on the site do not appear to be unique or significant topographic features and would not be impacted by the Project. Based on the watercourse, topography, and vegetation, the actual boundaries of the arroyo are not consistent with the mapped extent of the arroyo in the Grading Code and do not include the Project disturbance area. The Project will not impact the actual boundaries of the Prenda Arroyo and no mitigation is proposed.
Local Ordinances: Trees
There are several trees on the site, some moderately large. Most of the trees are non-native and no oak species are present. Based on TPM 38174, no trees within the site would be impacted by the Project. However, the row of acacia trees along Alpine Meadows Lane could be impacted.
In accordance with Section 13.25.020 of the City of Riverside Code of Ordinances , any project within the City of Riverside that will impact trees on City property must follow the Urban Forestry Policy Manual.
If tree trimming, encroachment, or removal will occur during the nesting season (February 1 to August 31), preconstruction nesting bird surveys will be required as detailed in Mitigation BIO -2 (Nesting Birds).
Habitat Conservation Plan: Riparian/Riverine, Vernal Pools, and Associated Species A jurisdictional delineation found 0.46 acre of MSHCP riverine habitat and no MSHCP ri parian habitat on the site . Impacts to MSHCP riverine habitat requires preparation of a DBESP.
However, the Project will avoid the MSHCP riverine habitat and a DBESP is therefore not required. There would be no conflict with the MSHCP and no mitigation is proposed.
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Pools or depressions characteristic of vernal habitat were not observed and there was n o evidence of ponding areas (i.e., cracked soils, tire ruts, etc.) on the site during surveys. No MSHCP species listed for protection associated with vernal pools were observed. No fairy shrimp or fairy shrimp habitat was observed. There would therefore be no impacts to vernal pool habitat or associated species, no conflict with the MSHCP, and no mitigation is proposed.
Riparian birds (least Bell's vireo , southwestern willow flycatcher, and western yellow -billed cuckoo) are discussed above. With implementation of Mitigation Measure BIO-4 (Riparian Birds), Project-related impacts to least Bell’s vireo, southwestern willow flycatcher, and western yellow billed cuckoo would be less than significant and there would be no conflict with the MSHCP.
Habitat Conservation Plan: Burrowing Owl
Burrowing owl is discussed above. With implementation of Mitigation Measure BIO-1 (Burrowing Owl), Project-related impacts to burrowing owl would be less than significant and there would be no conflict with the MSHCP.
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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7.0) REFERENCES
Abrams, L. 1923-1951. Illustrated Flora of the Pacific States, Volumes I-III. Stanford University Press, Stanford, California.
Abrams, L. and R. Ferris. 1960. Illustrated Flora of the Pacific States, Volume IV. Stanford University Press, Stanford, California.
Arnett, Ross H. Jr. 2000. American Insects: A Handbook of the Insects of America North of Mexico. CRC Press, New York, New York. 1003 pp.
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.
Bauder, E.T., Bohonak, A.J., Hecht, B., Simovich, M.A, Shaw, D., Jenkins, D.G., and Rains, M. 2011. A Draft Regional Guidebook for Applying the Hydrogeomorphic Approach to Assessing Wetland Functions of Vernal Pool Depressional Wwe tlands in Southern California. San Diego State University. San Diego, California.
CBOC (California Burrowing Owl Consortium). 1993. Burrowing Owl Survey Protocol and Mitigation Guidelines. April.
CDFG (California Department of Wildlife, formerly the California Department of Fish and Game). 2012. Staff Report on Burrowing Owl Mitigation. March 7.
CDFW (California Department of Fish and Wildlife). 2022. Special Animals List. July
_____. 2021a. Special Vascular Plants, Bryophytes, and Lichens List. Quarterly publication.
July.
_____. 2021b. Special Animals List. Periodic publication. July.
_____. 2021c. Natural Diversity Data Base. Rare Find 5.
_____. 2020. California Natural Community List.
https://www.wildlife.ca.gov/Data/VegCAMP/Natural-Communities
_____. 2008. California Wildlife Habitat Relationships System. Life History Account for Desert Woodrat, Neotoma lepida. Updated from Zeiner, D.C., W.F.Laudenslayer, Jr., K.E. Mayer, and M. White, eds. 1988-1990. California's Wildlife. Vol. I-III. California Depart. of Fish and Game, Sacramento, California.
https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=2521
CFS (Center for Food Safety). 2022. California Court Paves the Way for Protection of Imperiled Bumble Bees and Other Insects. May 31. https://www.centerforfoodsafety.org/press- releases/6648/california-court-paves-the-way-for-protection-of-imperiled-bumble-bees- and-other-insects
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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CNPS (California Native Plant Society). 2021. Inventory of Rare and Endangered Plants of California. https://rareplants.cnps.org/Search/Simple
Cornell (Cornell Laboratory of Ornithology). 2021. Birds of the World Online. Ithaca, NY. https://birdsoftheworld.org/bow/home
Dudek & Associates, Inc. 2003. Western Riverside County MSHCP, Vol. I. The Plan and Vol. II- A through E, The MSHCP Reference Document.
eBird (Cornell Laboratory of Ornithology and National Audubon Society). 2021. Accessed September 2021. Online data. https://ebird.org
Google Earth. 2021. Google Earth Pro 7.3.4.8248. Aerial images.
Jameson, E. W. and H. J. Peeters. 1988. California Mammals. University of California Press, Berkeley.
Jepson eFlora. 2021. Jepson Flora Project. http://ucjeps.berkeley.edu/eflora/
L&L (L&L Environmental, Inc.). 2006a. Focused Nesting Season Burrowing Owl Survey for Alpine Meadows, City of Riverside, Riverside County, California. Report prepared for William Mustin.
_____. 2006b. An Archaeological Records Search and Survey Report on the Alpine Meadows Lane Project, APN 243 -230-027, ±5 Acres in the City of Riverside, Riverside County, California. Report prepared for William Mustin.
Munz, Philip A. 1974. A Flora of Souther n California. University of California Press, Berkeley, California.
NETRonline (Nationwide Environmental Title Research, LLC). 2021. Historical aerial images. https://www.historicaerials.com/viewer.
NRCS (Natural Resources Conservation Service). 2021. U.S. Department of Agriculture. Web Soil Survey. https://websoilsurvey.nrcs.usda.gov/
Parker, Robert et al. 1999. Weeds of the West. The Western Society of Weed Science. Newark, California. 630 pp.
Pike, J., Pellegrinia, D., Hays, L., and Zembal, R. 2006. Least Bell’s Vireos and Southwestern Willow Flycatchers in Prado Basin of the Santa Ana River Watershed, CA. Orange County Water District and U.S. Fish and Wildlife Service.
https://www.waterboards.ca.gov/waterrights/water_issues/programs/hearings/santa_ana _river/exhibits/orangeco/ocwd6_10.pdf
RCA (Western Riverside County Regional Conservation Authority). 2006. Burrowing Owl Survey Instructions for the Western Riverside County Multiple Species Habitat Conservation Plan Area. http://www.wrc-rca.org/mshcp-species-survey-protocols/
_____. 2020. Status of Covered Species Not Adequately Conserved. December 1. http://www.wrc-rca.org/about-rca/annual-reports/
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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_____. 2021. Western Riverside County Multiple Species Habitat Conservation Plan Information Map. Accessed August/September 2021.
https://wrcrca.maps.arcgis.com/apps/webappviewer/index.html?id=a73e69d2a64d41c29 ebd3acd67467abd
Riverside (City of Riverside). 2012 (amended). Riverside General Plan 2025: Open Space and Conservation Element.
https://riversideca.gov/cedd/sites/riversideca.gov.cedd/files/pdf/planning/general- plan/12_Open_Space_and_Conservation_Element.pdf
Sawyer, J. O., Keeler -Wolf, T, and Evens, J. M. 2009. A Manual of California Vegetation, 2 nd Edition. California Native Plant Society, Sacramento, California. 1,300 pp.
Stebbins, R. C. 1985. Western Reptiles and Amphibians. Houghton Mifflin Company, Boston Mass.
US National Dams. 2021. Prenda Dam. Accessed September 2021. https://nationaldams.com/dams/woodcrest-dam-39xgx53
USFS (U.S. Forest Service). 2013. Pacific Southwest Region. Sensitive Animal Species by Forest. https://www.fs.usda.gov/main/r5/plants-animals/wildlife
USGS (U.S. Geological Survey). 1980. Riverside East, California 7.5-Minute topographic map.
Denver, Colorado.
USFWS (U. S. Fish and Wildlife Service). 1998. Draft Recovery Plan for the least Bell’s vireo.
Portland, OR. 139 pp.
_____. 2021a. Information for Planning and Consultation (IPaC). https://ecos.fws.gov/ipac/
_____. 2021b. Critical Habitat for Threatened and Endangered Species. https://fws.maps.arcgis.com/home/webmap/viewer.html?webmap=9d8de5e265ad4fe098 93cf75b8dbfb77
WRCC (Western Regional Climate Center). 2018. Precipitation Maps: PRISM Precipitation Maps 1981-2010. https://wrcc.dri.edu/Climate/prism_precip_maps.php
_____. 2021. Monthly Summary Time Series Precipitation Data for the Clark and Lake Mathews Remote Automated Weather Stations. https://wrcc.dri.edu/
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APPENDIX A: PLANT AND WILDLIFE SPECIES
Plant species identified on the site during the 2021 surveys and vertebrate wildlife species identified on the site during the 2006 and 2021 surveys. One asterisk (*) indicates a non-native species; two asterisks (**) indicates a special status species.
Scientific Name Common Name
VASCULAR PLANTS
DICOTYLEDONS
Gymnosperms
PINACEAE PINE FAMILY
* Pinus species Unid. ornamental pine
Angiosperms
ADOXACEAE MUSKROOT FAMILY
Sambucus nigra ssp. cerulea
(S. mexicana) Mexican elderberry, blue elderberry
AMARANTHACEAE AMARANTH FAMILY
* Amaranthus albus
Tumbleweed, tumbling pigweed
ANACARDIACEAE SUMAC or CASHEW FAMILY
* Schinus molle Peruvian pepper tree
APOCYNACEAE DOGBANE FAMILY
Asclepias fascicularis Narrow-leaf milkweed
ASTERACEAE ASTER FAMILY
Artemisia californica
California sagebrush
* Centaurea melitensis Tocalote
Corethrogyne filaginifolia var. filaginifolia
(Lessingia filaginifolia)
California-aster, sand-aster
Encelia farinosa Brittlebush
Erigeron canadensis
(Conyza canadensis)
Horseweed, mare's tail
Helianthus annuus
Western sunflower
* Lactuca serriola
Prickly lettuce
*
Matricaria discoidea
(Chamomilla suaveolens,
M. matricarioides) Pineapple weed
* Sonchus asper Prickly sow thistle
* Sonchus oleraceus
Common sow thistle
BIGNONIACEAE TRUMPET-CREEPER or JACARANDA FAMILY
* Jacaranda mimosifolia Blue jacaranda
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Scientific Name Common Name
BORAGINACEAE BORAGE OR WATERLEAF FAMILY
Amsinckia intermedia
(A. menziesii var. intermedia) Large flower rancher's fiddleneck Phacelia ramosissima Branching phacelia
BRASSICACEAE MUSTARD FAMILY
* Hirschfeldia incana
(Brassica geniculata)
Shortpod mustard
* Sisymbrium irio
London rocket
CHENOPODIACEAE GOOSEFOOT FAMILY
* Chenopodium album Lamb's quarters, common goosefoot
* Salsola tragus
Russian thistle
EUPHORBIACEAE SPURGE FAMILY
Croton setiger (C. setigerus,
Eremocarpus setiger, E.
setigerus)
Turkey-mullein, doveweed
Euphorbia albomarginata
(Chamaesyce albomarginata)
Rattlesnake sandmat, rattlesnake weed
* Ricinus communis
Castor bean
FABACEAE LEGUME FAMILY, PEA FAMILY
* Acacia species Unid. ornamental
GERANIACEAE GERANIUM FAMILY
* Erodium species
Unid. filaree
LAMIACEAE MINT FAMILY
* Marrubium vulgare
Horehound
Salvia apiana
White sage
LAURACEAE LAUREL FAMILY
* Persea americana Avocado
LYTHRACEAE LOOSESTRIFE FAMILY
* Lagerstroemia species Crepe myrtle
* Punica granatum
Pomegranate
MALVACEAE MALLOW FAMILY
* Malva parviflora
Cheeseweed
MYRTACEAE MYRTLE FAMILY, EUCALYPTUS FAMILY
* Eucalyptus species
Ornamental eucalyptus, gumtree
POLYGONACEAE BUCKWHEAT FAMILY
Eriogonum fasciculatum
California buckwheat
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 88 L&L
Scientific Name Common Name
ROSACEAE ROSE FAMILY
* Prunus persica Peach
RUTACEAE RUE FAMILY, CITRUS FAMILY
* Citrus species
Unid. cultivated citrus
SALICACEAE WILLOW FAMILY
Salix gooddingii
Goodding's black willow
SOLANACEAE NIGHTSHADE FAMILY
Datura wrightii (D. meteloides)
Jimsonweed, tolguacha
Lycium andersonii Anderson box-thorn
* Nicotiana glauca
Tree tobacco
ULMACEAE ELM FAMILY
* Ulmus species Ornamental elm
MONOCOTYLEDONS
ARECACEAE PALM FAMILY
* Washingtonia robusta Mexican fan palm, ornamental fan palm
POACEAE GRASS FAMILY
* Avena species Unid. wild oat
* Bromus diandrus (B. rigidus) Ripgut brome
* Bromus madritensis ssp. rubens
(B. rubens)
Red brome
* Schismus barbatus Mediterranean grass
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 89 L&L
Scientific Name Common Name Year Observed
VERTEBRATES
Reptiles
Phrynosomatidae Spiny Lizards
Sceloporus occidentalis Western fence lizard 2021
Sceloporus orcutti Granite spiny lizard 2006, 2021
Uta stansburiana Side-blotched lizard 2006, 2021
Birds
Accipitridae Hawks, Eagles, and Harriers
** Accipiter cooperii
Cooper's hawk 2021
Buteo jamaicensis Red-tailed hawk 2006, 2021
Aegithalidae Long-tailed Tits
Psaltriparus minimus Bushtit 2021
Columbidae Pigeons and Doves
Zenaida macroura Mourning dove 2006, 2021
Corvidae Crows and Jays
Aphelocoma californica California scrub jay 2021
Corvus brachyrhynchos American crow 2006, 2021
Corvus corax Common raven 2021
Falconidae Falcons
Falco sparverius American kestrel 2006, 2021
Fringillidae Finches
Spinus (Carduelis) psaltria Lesser goldfinch 2021
Haemorhous (Carpodacus) mexicanus House finch 2006, 2021
Hirundinidae Swallows
Petrochelidon pyrrhonota tachina Cliff swallow 2006
Icteridae Blackbirds
Icterus cucullatus Hooded oriole 2021
Mimidae Mockingbirds
Mimus polyglottos polyglottos Northern mockingbird 2021
Odontophoridae Quail
Callipepla californica californica California quail 2006, 2021
Passerellidae New World Sparrows
Chondestes grammacus Lark sparrow 2021
Melozone crissalis California towhee 2021
Pipilo maculatus Spotted towhee 2021
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 90 L&L
Scientific Name Common Name Year Observed
Picidae Woodpeckers
** Dryobates (Picoides) nuttallii Nuttall's woodpecker 2021
Ptiliogonatidae Silky-flycatchers
Phainopepla nitens Phainopepla 2021
Sturnidae Starlings
* Sturnus vulgaris European starling 2021
Trochilidae Hummingbirds
Calypte anna Anna's hummingbird 2006, 2021
Troglodytidae Wrens
Thryomanes bewickii Bewick's wren 2021
Tyrannidae Tyrant Flycatchers
Sayornis nigricans Black phoebe 2021
Tyrannus vociferans Cassin's kingbird 2021
Mammals
Canidae Dogs, Foxes, and Coyotes
Canis latrans Coyote (sign) 2021
Geomyidae Pocket Gophers
Thomomys bottae Botta's pocket gopher (sign) 2021
Leporidae Rabbits
Sylvilagus audubonii Audubon's cottontail 2006, 2021
Muridae Mice, Rats, and Voles
** Neotoma lepida intermedia San Diego desert woodrat (middens) 2021
Sciuridae Squirrels
Spermophilus beecheyi California ground squirrel 2006, 2021
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 91 L&L
APPENDIX B: SPECIAL STATUS SPECIES POTENTIALS FOR OCCURRENCE
Species
Growth Form,
Habitat and Distribution
Flowering
Season
Conservation
Status Potential for Occurrence
Plants
Abronia villosa var. aurita
Chaparral sand-verbena
Annual herb. Sandy soils in chaparral, coastal
scrub, desert dunes at 75-1600m elevation.
Riverside, San Bernardino, Imperial, San Diego,
Orange Cos. (presumed extirpated in Orange
Co.), Arizona, Baja.
(Jan)Mar-
Sep
Fed: None
Calif: S2
CRPR: 1B.1
Low; potentially suitable habitat, no documented
occurrences within 5 mi., not observed during surveys
(June-July).
Allium marvinii
Yucaipa onion
Perennial bulbiferous herb. Clay soils in openings
in chaparral at 760-1065m. Riverside, San
Bernardino, Orange, San Diego Cos.
Apr-May
Fed: None
Calif: S1
CRPR: 1B.2
MSHCP: AC b
USFS: S
Not expected; no suitable habitat, below elevation
range, no documented occurrences within 5 mi.
Allium munzii
Munz’s onion
Perennial bulbiferous herb. Mesic, clay soils in
chaparral, cismontane woodland, coastal scrub,
pinyon juniper woodland, valley and foothill
grassland at 297-1070m elevation. Western
Riverside Co.
Mar-May
Fed: END
Calif: THR, S1
CRPR: 1B.1
MSHCP: AC b
Not expected; no suitable habitat, no documented
occurrences within 5 mi.
Ambrosia pumila
San Diego ambrosia
Perennial rhizomatous herb. Sandy or clay soils,
often in disturbed areas, sometimes alkaline.
Chaparral, coastal scrub, valley and foothill
grassland, and vernal pools at 20-415m elevation.
Riverside, San Diego Co., Baja.
Apr-Oct
Fed: END
Calif: S1
CRPR: 1B.1
MSHCP: AC b
Low; potentially suitable habitat, no documented
occurrences within 5 mi., not observed during surveys
(June-July).
Arenaria paludicola
Marsh sandwort
Perennial stoloniferous herb. Sandy soils and
openings in freshwater or brackish marshes and
swamps at 3-170m elevation. LA, San
Bernardino, Riverside, Santa Cruz, Marin, San
Francisco, San Luis Obispo, and Santa Cruz Cos.
and Sonora Mexico, Washington state. Presumed
extirpated in San Bernardino, San Francisco, and
Santa Cruz Cos.
May-Aug
Fed: END
Calif: END, S1
CRPR: 1B.1
Absent; no suitable habitat, no documented
occurrences within 5 mi., not observed during surveys
(June-July).
Artemisia palmeri
San Diego sagewort
Perennial deciduous shrub. Sandy, mesic areas
in chaparral, coastal scrub, riparian
scrub/woodland/forest at 15-915m elevation. San
Diego, Riverside, San Bernardino Cos., Baja.
(Feb)May-
Sep
Fed: None
Calif: S3?
CRPR: 4.2
Not expected; potentially suitable habitat, no
documented occurrences within 5 mi., not observed
during surveys (June-July).
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 92 L&L
Species
Growth Form,
Habitat and Distribution
Flowering
Season
Conservation
Status Potential for Occurrence
Asplenium vespertinum
Western spleenwort
Perennial rhizomatous fern. Rocky soils and
moist, shady areas in chaparral, cismontane
woodland, coastal scrub at 180-1000m elevation.
LA, Orange, Riverside, San Bernardino, San
Diego, and Ventura Cos. and Baja. Not tracked in
CNDDB.
Feb-Jun
Fed: None
Calif: S4
CRPR: 4.2
Not expected; no suitable habitat, one mapped CCH
record within 5 mi. (from 1892 – east Riverside, exact
location unknown), not observed during surveys
(June-July).
Astragalus hornii var. hornii
Horn’s milk-vetch
Annual herb. Alkaline soils and along lake
margins, meadows and seeps and playas at 60-
850m elevation. San Bernardino, Riverside, Inyo,
Kern, LA, Orange, and Kings Cos. and Nevada.
San Joaquin Valley, South Coast, Western
Transverse Ranges, W edge of the Mojave
Desert. Presumed extirpated in San Bernardino
Co.
May-Oct
Fed: None
Calif: S1
CRPR: 1B.1
Absent; no suitable habitat, no documented
occurrences within 5 mi., not observed during surveys
(June-July).
Atriplex coronata var. notatior
San Jacinto Valley crownscale
Annual herb. Alkaline soils in playas, mesic areas
of valley and foothill grassland, vernal pools at
139-500m elevation. Western Riverside Co.
Apr-Aug
Fed: END
Calif: S1
CRPR: 1B.1
MSHCP: AC d
Absent; no suitable habitat, no documented
occurrences within 5 mi., not observed during surveys
(June-July).
Atriplex parishii
Parish’s brittlescale
Annual herb. Alkaline soils in chenopod scrub,
playas, vernal pools at 25-1900m elevation;
Riverside, San Bernardino, LA, Orange, and San
Diego Cos. and Baja. Presumed extirpated in LA,
Orange, and San Bernardino Cos.
Jun - Oct
Fed: None
Calif: S1
CRPR: 1B.1
MSHCP: AC d
USFS: S
Not expected; no suitable habitat, no documented
occurrences within 5 mi., not observed during surveys
(June-July).
Atriplex serenana var.
davidsonii
Davidson's saltscale
Annual herb. Alkaline soils in coastal bluff scrub,
coastal scrub at 10-200m elevation; Channel
Islands, LA, Orange, Riverside, San Luis Obispo,
Santa Barbara, and Ventura Cos. Presumed
extirpated in Santa Barbara Co., possibly
extirpated in LA Co.
Apr - Oct
Fed: None
Calif: S1
CRPR: 1B.2
MSHCP: AC d
Not expected; potentially suitable habitat but above
elevation range, no documented occurrences within 5
mi., not observed during surveys (June-July).
Berberis nevinii
Nevin's barberry
Perennial evergreen shrub. Sandy or gravelly
soils in chaparral, coastal scrub, cismontane
woodland, riparian scrub at 70-825m elevation.
Scattered localities in LA, San Bernardino,
Riverside, & San Diego Cos.
(Feb)Mar-
Jun
can ID all
year
Fed: END
Calif: END, S1
CRPR: 1B.1
MSHCP: AC d
Absent; potentially suitable habitat, one documented
occurrence within 5 mi. (from 1999, 3.1 mi. N of site,
a transplant outside of natural range), conspicuous
plant not observed during surveys.
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 93 L&L
Species
Growth Form,
Habitat and Distribution
Flowering
Season
Conservation
Status Potential for Occurrence
Bouteloua trifida
Three-awned grama
Perennial herb. Carbonate, rocky soils in
Mojavean desert scrub at 700-2000m elevation.
Riverside, San Bernardino, Inyo Cos. SW US and
Sonora, Mexico.
(Apr)May-
Sep
Fed: None
Calif: S3
CRPR: 2B.3
Absent; no suitable habitat, below elevation range, no
documented occurrences within 5 mi., not observed
during surveys (June-July).
Brodiaea filifolia
Thread-leaved brodiaea
Perennial bulbiferous herb. Often on clay soils in
chaparral openings, cismontane woodland,
coastal scrub, playas, valley and foothill
grassland, and vernal pools at 25-1120m
elevation. LA, Orange, Riverside, San
Bernardino, and San Diego Co; scattered in
Southern CA foothills & valleys.
Mar-Jun
Fed: THR
Calif: END, S2
CRPR: 1B.1
MSHCP: AC d
Not expected; no or marginal habitat/soils, no
documented occurrences within 5 mi., not observed
during surveys (June-July).
Calochortus plummerae
Plummer’s mariposa lily
Perennial bulbiferous herb. Granitic rocky soils in
chaparral, cismontane woodland, coastal scrub,
lower montane coniferous forest, valley and
foothill grassland at 100-1700m elevation. LA,
Orange, Riverside, San Bernardino, San Diego,
Ventura Cos.
May-Jul
Fed: None
Calif: S4
CRPR: 4.2
MSHCP: AC
Low; potentially suitable habitat, no documented
occurrences within 5 mi., not observed during surveys
(June-July).
Carex comosa
Bristly sedge
Perennial rhizomatous herb. Coastal prairie,
marshes and swamps (lake margins), valley and
foothill grassland at 0-625m elevation; Central
and Northern CA and San Bernardino Co.
Presumed extirpated in San Bernardino Co.
May-Sep
Fed: None
Calif: S2
CRPR: 2B.1
Not expected; no suitable habitat, no documented
occurrences within 5 mi., not observed during surveys
(June-July).
Caulanthus simulans
Payson’s jewelflower
Annual herb. Chaparral, coastal scrub at 90-
2200m elevation. North-facing slopes and
ridgelines on sandy-granitic soils, frequently on
steep rocky slopes, in burned areas, or disturbed
sites such as streambeds. Orange, western
Riverside, San Diego Cos.
(Feb)Mar-
May(Jun)
Fed: None
Calif: S4
CRPR: 4.2
MSHCP: AC
Low to moderate; potentially suitable habitat, no
documented occurrences within 5 mi., not observed
during surveys (June-July).
Centromadia pungens ssp. laevis
Smooth tarplant
Annual herb. Alkaline soils in chenopod scrub,
meadows and seeps, playas, riparian woodland,
valley and foothill grassland at 0-640m elevation.
Also fallow fields, drainage ditches; mainly in SW
Riverside Co., a few sites in interior valleys of LA,
San Bernardino, San Diego Cos.
Apr-Sep
Fed: None
Calif: S2
CRPR: 1B.1
MSHCP: AC d
Low; potentially suitable habitat, two documented
occurrences within 5 mi. (from 2013, Sycamore Cyn,
3.3 mi. ENE of site; from 1995, March Air Reserve
Base, 3.5 mi. E of site), not observed during surveys
(June-July).
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 94 L&L
Species
Growth Form,
Habitat and Distribution
Flowering
Season
Conservation
Status Potential for Occurrence
Chloropyron maritimum ssp.
maritimum
Salt marsh bird’s-beak
Hemiparasitic annual herb. Coastal salt marsh
and swamp and coastal dunes. Limited to the
higher zones of the salt marsh habitat. 0-30m
elevation. LA, Orange, Riverside, San
Bernardino, San Diego Cos. and Central CA,
Baja.
May-
Oct(Nov)
Fed: END
Calif: END, S1
CRPR: 1B.2
Absent; no suitable habitat, no documented
occurrences within 5 mi., not observed during surveys
(June-July).
Chorizanthe leptotheca
Peninsular spineflower
Annual herb. Granitic soils and alluvial fans in
chaparral, coastal scrub, lower montane
coniferous forest at 300-1900m elevation.
Riverside, San Bernardino, LA, San Diego, Kern,
San Luis Obispo Cos., Baja. Not tracked in the
CNDDB.
May-Aug
Fed: None
Calif: S3
CRPR: 4.2
MSHCP: AC
Not expected; no or marginal habitat, no CCH records
in vicinity, not observed during surveys (June-July).
Chorizanthe parryi var. parryi
Parry's spineflower
Annual herb. Sandy or rocky soils and openings
in chaparral, cismontane woodland, coastal
scrub, valley and foothill grassland at 275-1220m
elev. LA, Riverside, San Bernardino Cos.
Apr-Jun
Fed: None
Calif: S2
CRPR: 1B.1
USFS: S
BLM: S
MSHCP: AC
Low; potentially suitable habitat, two documented
occurrences within 5 mi. (from 1917, exact location
unknown, mapped 3.2 mi. NNE of site; from 1936,
exact location unknown, mapped 2.5 mi. NE of site),
not observed during surveys (June-July).
Chorizanthe polygonoides var.
longispina
Long-spined spineflower
Annual herb. Often on clay soils in chaparral,
coastal scrub, meadows and seeps, valley and
foothill grassland, vernal pools at 30-1530m
elevation. Orange, Riverside, San Diego Cos.,
Baja.
Apr-Jul
Fed: None
Calif: S3
CRPR: 1B.2
MSHCP: AC
Low; no or marginal habitat, one documented
occurrence within 5 mi. (from 1992, 5.0 mi. SSW of
site), not observed during surveys (June-July).
Chorizanthe xanti var. leucotheca
White-bracted spineflower
Annual herb. Sandy or gravelly soil in coastal
scrub (alluvial fans), Mojavean desert scrub,
pinyon and juniper woodlands at 300-1200m
elevation. Riverside, San Bernardino, San Diego
Cos.
Apr-Jun
Fed: None
Calif: S3
CRPR: 1B.2
Low; no or marginal habitat, no documented
occurrences within 5 mi., not observed during surveys
(June-July).
Convolvulus simulans
Small-flowered morning-glory
Annual herb. Clay soils, serpentinite seeps,
chaparral openings, coastal scrub, valley and
foothill grassland at 30-740m elevation. LA,
Orange, Riverside, San Bernardino, San Diego
Cos. and Central CA, Baja. Not tracked in
CNDDB.
Mar-Jul
Fed: None
Calif: S4
CRPR: 4.2
MSHCP: AC
Low; no or marginal habitat, no mapped CCH records
within 5 mi., not observed during surveys (June-July).
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 95 L&L
Species
Growth Form,
Habitat and Distribution
Flowering
Season
Conservation
Status Potential for Occurrence
Cuscuta obtusiflora var. glandulosa
Peruvian dodder
Annual parasitic vine. Freshwater marshes &
swamps at 15-280m elevation. Scattered
locations in LA, San Bernardino Cos., Northern
and Central CA, various US states and Baja.
Presumed extirpated from San Bernardino Co.
Jul-Oct
Fed: None
Calif: SH
CRPR: 2B.2
Absent; no suitable habitat, no documented
occurrences within 5 mi., not observed during surveys
(June-July).
Deinandra (Hemizonia) paniculata
Paniculate tarplant
Annual herb. Usually vernally mesic areas,
sometimes sandy. Coastal scrub, valley and
foothill grassland, vernal pools at 25-940m
elevation. LA, Orange, Riverside, San
Bernardino, San Diego, Ventura, Kern, Santa
Barbara, San Luis Obispo Cos., Baja. Not tracked
in the CNDDB.
(Mar)
Apr-Nov
Fed: None
Calif: S4
CRPR: 4.2
Not expected; no or marginal habitat, several CCH
records in vicinity (closest is 2.8 mi. E of site), not observed during surveys (June-July).
Dodecahema leptoceras
Slender-horned spineflower
Annual herb. Open, sandy alluvial benches in
valleys & canyons. Chaparral, coastal scrub
(alluvial fans), cismontane woodland at 200-760m
elevation. LA, Riverside, San Bernardino Cos.
Apr-Jun
Fed: END
Calif: END, S1
CRPR: 1B.1
MSHCP: AC b
Low; limited potentially suitable habitat, no
documented occurrences within 5 mi., not observed
during surveys (June-July).
Dudleya multicaulis
Many-stemmed dudleya
Perennial herb. Often on clay soils in chaparral,
coastal scrub, valley and foothill grassland at 15-
790m elevation. LA, Orange, Riverside, San
Bernardino, San Diego Cos.
Apr-Jul
Fed: None
Calif: S2
CRPR: 1B.2
USFS: S
BLM: S
MSHCP: AC b
Not expected; no or marginal habitat, no documented
occurrences within 5 mi., not observed during surveys
(June-July).
Eriastrum densifolium ssp. sanctorum
Santa Ana River woollystar
Perennial herb. Sandy or gravelly soils in
chaparral, coastal scrub (alluvial fans) at 91-610m
elevation. Orange, Riverside, San Bernardino
Co., endemic to Santa Ana River watershed.
Presumed extirpated in Orange Co.
Apr-Sep
Fed: END
Calif: END, S1
CRPR: 1B.1
MSHCP: AC
Absent; no or marginal habitat, outside known
geographic range, no documented occurrences within
5 mi., not observed during surveys (June-July).
Galium californicum ssp. primum
Alvin meadow bedstraw
Perennial herb. Granitic, sandy soils in chaparral,
lower montane coniferous forest at 1350-1700m
elevation. Riverside, San Bernardino Cos.
May-Jul
Fed: None
Calif: S2
CRPR: 1B.2
MSHCP: NAC f
Absent; no suitable habitat, well below elevation
range, not observed during surveys (June-July).
Harpagonella palmeri
Palmer’s grapplinghook
Annual herb. Clay soils and open grassy areas
within shrubland in chaparral, coastal scrub,
valley and foothill grassland at 20-955m
elevation. LA, Orange, Riverside, San Diego Co.,
Catalina Island, AZ, Baja and Sonora, Mexico.
Mar-May
Fed: None
Calif: S3
CRPR: 4.2
MSHCP: AC
Not expected; no or marginal habitat, no documented
occurrences within 5 mi., not observed during surveys
(June-July).
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 96 L&L
Species
Growth Form,
Habitat and Distribution
Flowering
Season
Conservation
Status Potential for Occurrence
Helianthus nuttallii ssp. parishii
Los Angeles sunflower
Perennial rhizomatous herb. Coastal salt and
freshwater marshes and swamps at 10-1525m
elevation. LA, Orange, San Bernardino Cos. Last
seen in 1937, presumed extinct.
Aug-Oct
Fed: None
Calif: SX
CRPR: 1A
Absent; no suitable habitat, no documented
occurrences within 5 mi., presumed extinct.
Hordeum intercedens
Vernal barley
Annual grass. Saline flats and depressions in
valley and foothill grassland, vernal pools, coastal
dunes, coastal scrub at 5-1000m elevation. LA,
Orange, Riverside, San Diego Cos., Central CA,
Channel Islands. Not tracked in the CNDDB.
Mar-Jun
Fed: None
Calif: S3S4
CRPR: 3.2
MSHCP: AC
Absent; no suitable habitat, no mapped CCH records
within 5 mi., not observed during surveys (June-July).
Horkelia cuneata var. puberula
Mesa horkelia
Perennial herb. Sandy or gravelly soils in
maritime chaparral, cismontane woodland,
coastal scrub at 70-810m elevation. LA, Orange,
Riverside, San Bernardino, San Diego, San Luis
Obispo, Santa Barbara, Ventura Cos. Presumed
extirpated in Riverside and San Diego Cos.
Feb-
Jul(Sep)
Fed: None
Calif: S1
CRPR: 1B.1
USFS: S
Not expected; potentially suitable habitat, no
documented occurrences within 5 mi., presumed
extirpated in Riverside County, not observed during
surveys (June-July).
Imperata brevifolia
California satintail
Perennial rhizomatous herb. Mesic areas in
chaparral, coastal scrub, Mojavean desert scrub,
meadows and seeps (often alkali), riparian scrub
at 0-1215m elevation. Riverside, San Bernardino,
LA, Orange, San Diego, Ventura, Imperial Cos.,
Central and Northern CA, SW US, Baja.
Sep-May
Fed: None
Calif: S3
CRPR: 2B.1
USFS: S
Not expected; no or marginal habitat, no documented
occurrences within 5 mi.
Juglans californica
Southern California black walnut
Perennial deciduous tree. Alluvial soils in
chaparral, cismontane woodland, coastal scrub,
riparian woodland at 50-900m elevation. LA,
Orange, Riverside, Santa Barbara, San
Bernardino, San Diego, Ventura Cos., Central
and Northern CA.
Mar-Aug
Fed: None
Calif: S4
CRPR: 4.2
MSHCP: AC
Absent; no or marginal habitat, conspicuous plant not
observed during surveys.
Lasthenia glabrata spp. coulteri
Coulter’s goldfields
Annual herb. Coastal salt marshes and swamps,
playas, vernal pools at 1-1220m elevation.
Riverside, San Bernardino, LA, Orange, Ventura
Cos., Central and Northern CA, Baja. Presumed
extirpated in LA, San Bernardino Cos.
Feb-Jun
Fed: None
Calif: S2
CRPR: 1B.1
BLM: S
MSHCP: AC d
Absent; no suitable habitat, one documented
occurrence within 5 mi. (from 1989, 2.5 mi. SW of
site), not observed during surveys (June-July).
Lepidium virginicum var. robinsonii
Robinson's pepper-grass
Annual herb. Chaparral, coastal scrub at 1-885m
elevation. LA, Orange, Riverside, San
Bernardino, San Diego, Ventura, Santa Barbara,
Mono Cos., Channel Islands, Baja.
Jan-Jul
Fed: None
Calif: S3
CRPR: 4.3
Low; potentially suitable habitat, two documented
occurrences within 5 mi. (from 1962, Sycamore Cyn,
2.6 mi. NE of site; from 2004, 4.5 mi. NNE of site), not observed during surveys (June-July).
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 97 L&L
Species
Growth Form,
Habitat and Distribution
Flowering
Season
Conservation
Status Potential for Occurrence
Lycium parishii
Parish's desert-thorn
Perennial shrub. Arid slopes & sand flats in
coastal scrub and Sonoran desert scrub at 135-
1000m elevation. Imperial, San Bernardino, San
Diego Co., AZ, Sonora, Mexico. Presumed
extirpated in San Bernardino Co.
Mar-Apr
Fed: None
Calif: S1
CRPR: 2B.3
Not expected; potentially suitable habitat, no
documented occurrences within 5 mi., no records
from Riverside County, not observed during surveys
(June-July).
Malacothamnus parishii
Parish's bush-mallow
Perennial deciduous shrub. Chaparral, coastal
scrub at 305-455m elevation. San Bernardino Co.
Presumed extirpated.
Jun-Jul
Fed: None
Calif: SX
CRPR: 1A
Not expected; potentially suitable habitat, no
documented occurrences within 5 mi., no records
from Riverside County, presumed extirpated, not
observed during surveys (June-July).
Microseris douglasii ssp. platycarpha
Small-flowered microseris
Annual herb. Clay soils in cismontane woodland,
coastal scrub, valley and foothill grassland, vernal
pools at 15-1070m elevation. LA, Orange,
Riverside, San Diego Cos., Channel Islands,
Baja. Not tracked in CNDDB.
Mar-May
Fed: None
Calif: S4
CRPR: 4.2
MSHCP: AC
Not expected; no or marginal habitat, no mapped
CCH records within 5 mi., not observed during
surveys (June-July).
Monardella pringlei
Pringle’s monardella
Annual herb. Sandy soil in coastal scrub at 300-
400m elevation. Riverside, San Bernardino Co.
Presumed extirpated.
May-Jun
Fed: None
Calif: SX
CRPR: 1A
Not expected; potentially suitable habitat, no
documented occurrences within 5 mi., presumed
extirpated, not observed during surveys (June-July).
Myosurus minimus ssp. apus
Little mousetail
Annual herb. Valley and foothill grasslands,
alkaline vernal pools at 20-640m elevation.
Riverside, San Bernardino, San Diego Cos.,
Central and Northern CA, Oregon, Baja.
Mar-Jun
Fed: None
Calif: S2
CRPR: 3.1
MSHCP: AC d
Not expected; no suitable habitat, no documented
occurrences within 5 mi., not observed during surveys
(June-July).
Nasturtium (Rorippa) gambelii
Gambel’s water cress
Perennial rhizomatous herb. Freshwater or
brackish marshes and swamps at 5-330m
elevation. LA, Orange, San Bernardino, Santa
Barbara, San Luis Obispo Cos. Presumed
extirpated in San Bernardino Co.
Apr-Oct
Fed: END
Calif: THR, S1
CRPR: 1B.1
Absent; no suitable habitat, no documented
occurrences within 5 mi., not observed during surveys
(June-July).
Navarretia fossalis
Spreading navarretia
Annual herb. Chenopod scrub, shallow freshwater
marshes and swamps, playas, vernal pools at 30-
655m elevation. LA, Riverside, San Diego, San
Luis Obispo Cos., Baja.
Apr-Jun
Fed: THR
Calif: S2
CRPR: 1B.1
MSHCP: AC b
Absent; no suitable habitat, no documented
occurrences within 5 mi., not observed during surveys
(June-July).
Navarretia prostrata
Prostrate vernal pool navarretia
Annual herb. Mesic areas in coastal scrub, valley
and foothill grassland (alkaline), meadows and
seeps, vernal pools at 3-1210m elevation.
Locations in northern, central, and southern CA.
Apr-Jun
Fed: None
Calif: S2
CRPR: 1B.2
MSHCP: AC d
Not expected; no or marginal habitat, no documented
occurrences within 5 mi., not observed during surveys
(June-July).
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 98 L&L
Species
Growth Form,
Habitat and Distribution
Flowering
Season
Conservation
Status Potential for Occurrence
Phacelia stellaris
Brand’s star phacelia
Annual herb. Coastal dunes, coastal scrub at 1-
400m elevation. Sandy openings, sandy benches,
dunes, sandy washes, or floodplains. LA, Orange,
Riverside, San Bernardino, San Diego Cos.
Possibly extirpated in LA Co.
Mar-Jun
Fed: None
Calif: S1
CRPR: 1B.1
MSHCP: AC b
Low; potentially suitable habitat, no documented
occurrences within 5 mi., not observed during surveys
(June-July).
Pseudognaphalium leucocephalum
White rabbit-tobacco
Perennial herb. Sandy or gravelly soils in
chaparral, cismontane woodland, coastal scrub,
riparian woodland at 0-2100m elevation. LA,
Orange, Riverside, San Bernardino, San Diego,
Ventura Cos., AZ, NM, TX, Baja and Sonora Mex.
(Jul)Aug-
Nov(Dec)
Fed: None
Calif: S2
CRPR: 2B.2
Low; potentially suitable habitat, no documented
occurrences within 5 mi., not observed during surveys
(June-July).
Pseudorontium cyathiferum
Deep Canyon snapdragon
Annual herb. Rocky soils in Sonoran desert scrub
at 0-800m elevation. Riverside, Imperial, San
Diego Cos., AZ, Baja and Sonora, Mexico.
Feb-Apr
Fed: None
Calif: S1
CRPR: 2B.3
Absent; no suitable habitat, no documented
occurrences within 5 mi/
Quercus engelmannii
Engelmann oak
Perennial deciduous tree. Chaparral, cismontane
woodland, riparian woodland, valley and foothill
grassland at 50-1300m elevation. Mostly in
foothills of Orange, west Riverside, San
Bernardino, and San Diego Counties, also
southeast San Gabriel Mountain foothills (LA
County). Not tracked in the CNDDB.
Mar-Jun
Fed: None
Calif: S3
CRPR: 4.2
Absent; no or marginal habitat, conspicuous plant not
observed during surveys
Ribes divaricatum var. parishii
Parish’s gooseberry
Perennial deciduous shrub. Riparian woodland at
65-300m elevation. LA, San Bernardino Co.
Presumed extirpated.
Feb-Apr
Fed: None
Calif: SX
CRPR: 1A
Absent; no suitable habitat, no documented
occurrences within 5 mi., presumed extirpated, not
observed during surveys (June-July).
Romneya coulteri
Coulter’s matilija poppy
Large perennial rhizomatous herb. Often in burn
areas in chaparral, coastal scrub at 20-1200m
elevation. LA, Orange, Riverside, San
Bernardino, San Diego, San Luis Obispo Cos.
Not tracked in CNDDB.
Mar-
Jul(Aug)
Fed: None
Calif: S4
CRPR: 4.2
MSHCP: AC
Absent; potentially suitable habitat, conspicuous plant not observed during surveys.
Senecio aphanactis
Chaparral ragwort
Annual herb. Alkaline soils (sometimes) in
chaparral, cismontane woodland, coastal scrub at
15-800m elevation; LA, Orange, Riverside, San
Bernardino, San Diego, Ventura Cos., Central
and Northern CA, Baja.
Jan-
Apr(May)
Fed: None
Calif: S2
CRPR: 2B.2
Low; potentially suitable habitat, no documented
occurrences within 5 mi., not observed during surveys
(June-July).
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 99 L&L
Species
Growth Form,
Habitat and Distribution
Flowering
Season
Conservation
Status Potential for Occurrence
Sidalcea neomexicana
Salt spring checkerbloom
Perennial herb. Alkaline, mesic soils in chaparral,
coastal scrub, lower montane coniferous forest,
Mojavean desert scrub, playas at 15-1530m
elevation. Kern, LA, Orange, Riverside, San
Bernardino, San Diego, Ventura Cos., western
US, Sonora Mex. Presumed extirpated in LA Co.
Mar-Jun
Fed: None
Calif: S2
CRPR: 2B.2
USFS: S
Not expected; no or marginal habitat, no documented
occurrences within 5 mi., not observed during surveys
(June-July).
Sphenopholis obtusata
Prairie wedge grass
Perennial herb. Mesic areas in cismontane
woodland, meadows and seeps at 300-2000m
elevation. Riverside, San Bernardino, San Diego
Cos., Central and Northern CA, throughout US
(except Alaska), Baja and Sonora Mex.
Apr-Jul
Fed: None
Calif: S2
CRPR: 2B.2
Absent; no suitable habitat, no documented
occurrences within 5 mi., not observed during surveys
(June-July).
Symphyotrichum defoliatum
San Bernardino aster
Perennial rhizomatous herb. Near ditches,
streams, springs in cismontane woodland, coastal
scrub, lower montane coniferous forest, meadows
and seeps, marshes and swamps, valley and
foothill grasslands (vernally mesic) at 2-2040m
elevation. LA, Orange, Riverside, San
Bernardino, San Diego, Imperial, Kern, Santa
Barbara, San Luis Obispo Cos.
Jul-Nov
Fed: None
Calif: S2
CRPR: 1B.2
USFS: S
BLM: S
Low; potentially suitable habitat, no documented
occurrences within 5 mi., not observed during surveys
(June-July).
Texosporium sancti-jacobi
Woven-spored lichen
Crustose lichen. Grows on soil, small mammal
pellets, dead twigs, and Selaginella species, in
chaparral openings at 60-660m elevation. LA,
Riverside, San Diego, Ventura, Santa Barbara,
San Benito Cos., San Clemente Island, ID, OR,
WA.
Not
applicable
Fed: None
Calif: S2
CRPR: 3
Not expected; no suitable habitat, no documented
occurrences within 5 mi., not observed during
surveys.
Tortula californica
California screw-moss
Moss. Sandy soil in chenopod scrub, valley and
foothill grassland at 10-1460m elevation. LA,
Riverside, San Diego, Ventura Cos., Central and
Northern CA, Channel Islands.
Not
applicable
Fed: None
Calif: S2?
CRPR: 1B.2
BLM: S
Not expected; no suitable habitat, no documented
occurrences within 5 mi., not observed during
surveys.
Trichocoronis wrightii var wrightii
Wright’s trichocoronis
Annual herb. Alkaline soils in meadows and
seeps, marshes and swamps, riparian forest,
vernal pools at 5-435m elevation. Riverside Co.,
Central Valley, TX, Baja.
May-Sep
Fed: None
Calif: S1
CRPR: 2B.1
MSHCP: AC b
Absent; no suitable habitat, no documented
occurrences within 5 mi., not observed during surveys
(June-July).
References: CDFW (2021a, 2021c), USFWS (2021a), CNPS (2021), Dudek (2003), RCA (2020)
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 100 L&L
Species Habitat and Distribution
Conservation
Status Potential for Occurrence
Invertebrates
Bombus crotchii
Crotch bumble bee
Coastal CA E to Sierra-Cascade crest & S into Mexico.
Open grassland and scrub habitats. Food plant genera
include Antirrhinum, Asclepias, Chaenactis, Lupinus,
Medicago, Salvia, Phacelia, Clarkia, Dendromecon,
Eschscholzia, and Eriogonum. Lives in colonies that
may be underground in rodent holes or above ground
in rock piles, tree cavities, etc.
Fed: None
Calif: CanE, S1S2
Low to moderate; potentially suitable habitat and food
plant species present, two documented occurrences
within 5 mi. (from 1976, Riverside area – exact
location unknown, mapped 3.7 mi. N of site; from
2020, on black sage in an urban garden, 4.0 mi.
NNW of site), no colonies noted during surveys.
Branchinecta lynchi
Vernal pool fairy shrimp
Vernal pools or similar vernal habitats, requires cool
water pools (≤50ºF to hatch, ≤75ºF to survive);
disjunct locations in Riverside Co. and the Coast
Ranges thru Central Valley to Tehama Co., southern
Oregon, up to elevation of 1159m.
Fed: THR
Calif: SA, S3
MSHCP: AC a
Absent; no suitable habitat, no documented
occurrences within 5 mi.
Ceratochrysis longimala
Desert cuckoo wasp
Chaparral, scrub habitats, juniper. LA, Riv, Ventura
cos. Possibly extirpated.
Fed: None
Calif: SA, S1
Low; potentially suitable habitat, one documented
occurrence within 5 mi. (from 1915, Riverside area –
exact location unknown, mapped 3.7 mi. N of site),
possibly extirpated.
Cicindela tranquebarica viridissima
Greenest tiger beetle
Riparian woodland adjacent to Santa Ana River basin,
usually found in open spots between trees.
Fed: None
Calif: SA, S1
Absent; no suitable habitat, outside known
geographic range, no documented occurrences
within 5 mi.
Eugnosta (Carolella) busckana
Busck’s gallmoth
Coastal dunes, coastal scrub. Larval host is Encelia
californica. All CNDDB records are historical, from
1906 to 1939 and extirpated/possibly extirpated.
Fed: None
Calif: SA, SH
Not expected; potentially suitable habitat, one
documented occurrence within 5 mi. (from 1906, west
Riverside area – exact location unknown, mapped
3.0 mi. NW of site, extirpated).
Euphydryas editha quino
Quino checkerspot butterfly
Coastal scrub, open chaparral, juniper woodland,
native grassland. Western Riverside Co., southern
San Diego Co., Baja. Flight season from mid-Jan to
late May. Host plants are dwarf plantain (Plantago
erecta), purple owl’s clover (Castilleja exserta), white snapdragon (Antirrhinum coulterianum), wooly plantain
(Plantago patagonica), thread-leaved bird’s beak
(Cordylanthus rigidus). USFWS considers species
extirpated in San Bernardino Co.
Fed: END
Calif: SA, S1S2
MSHCP: AC
Low; potentially suitable habitat but no host plants
observed (during June-July survey), one documented
occurrence within 5 mi. (from 1945, Mockingbird Cyn
area – exact location unknown, mapped 2.0 mi. SW
of site).
Neolarra alba
White cuckoo bee
Cleptoparasitic in the nests of perdita bees. Known
only from localities in Southern California. All
occurrences are historical.
Fed: None
Calif: SA, SH
Not expected; one documented occurrence within 5
mi. (from 1928, Riverside area – exact location
unknown, mapped 3.0 mi. SE of site, possibly
extirpated).
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 101 L&L
Species Habitat and Distribution
Conservation
Status Potential for Occurrence
Rhaphiomidas terminatus
abdominalis
Delhi sands flower-loving fly
Delhi fine sands, often with unconsolidated dunes
present. SW San Bernardino Co. & NW Riverside Co.
Fed: END
Calif: SA, S1
MSHCP: AC
Absent; no suitable habitat, no Delhi soils present on
the site.
Streptocephalus woottoni
Riverside fairy shrimp
Endemic to Western Riverside, Orange, and San
Diego counties in areas of tectonic swales/earth slump
basins in grassland and coastal sage scrub. Coastal
scrub, valley & foothill grassland, vernal pool, wetland.
Inhabit seasonally astatic pools filled by winter/spring rains. Hatch in warm water later in the season.
Generally restricted to pools greater than 12 inches
deep. All known populations lie between 30 and 415
meters elevation.
Fed: END
Calif: SA, S1S2
MSHCP: AC a
Absent; no suitable habitat, no documented
occurrences within 5 mi.
Fish
Catostomus santaanae
Santa Ana sucker
Small to medium permanent streams. LA & San
Gabriel drainage, lower Santa Ana River.
Fed: THR
Calif: SA, S1
MSHCP: AC
Absent; no perennial aquatic habitat.
Gila orcuttii
Arroyo chub
Slow-moving or backwater sections of warm/ cool
streams with mud or sand substrates. LA, San
Gabriel, San Luis Rey, Santa Ana & Santa Margarita
Riv & Malibu & San Juan creeks.
Fed: None
Calif: SSC, S2
MSHCP: AC
USFS: S
Absent; no perennial aquatic habitat.
Oncorhynchus mykiss irideus pop.
10 Steelhead – southern California
DPS
South coast flowing waters. Fed listing refers to pops from Santa Maria River south to southern extent of
range (San Mateo Creek in San Diego Co.)
Fed: END
Calif: SA, S1
Absent; no perennial aquatic habitat.
Rhinichthys osculus “subspecies 8”
Santa Ana speckled dace
Headwaters of the Santa Ana & San Gabriel Rivers,
May be extirpated from the Los Angeles River system.
Santa Ana River populations in lower San Bernardino
Mtn. foothills & washes. Requires permanent flowering
streams with summer water temps of 17-20C. usually
inhabits shallow cobble and gravel riffles.
Fed: None
Calif: SSC, S1
USFS: S
Absent; no perennial aquatic habitat.
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 102 L&L
Species Habitat and Distribution
Conservation
Status Potential for Occurrence
Amphibians
Coleonyx variegatus abbotti
San Diego banded gecko
Coastal and cismontane southern California. Found in
granite or rocky outcrops in coastal scrub and
chaparral.
Fed: None
Calif: SSC, S1S2
Low; potentially suitable habitat and rock outcrops,
no documented occurrences within 5 mi., not
observed during surveys but is secretive.
Rana muscosa
Southern mountain yellow-legged
frog
Always encountered within a few feet of water.
Tadpoles may require up to 2 years to complete
development.
Fed: END
Calif: END, WL, S1
MSHCP: AC c
USFS: S
Absent; no perennial aquatic habitat.
Spea hammondii
Western spadefoot toad
Cismontane woodland, coastal scrub, valley & foothill
grassland, vernal pool. Breeds in quiet streams &
vernal pools, burrows beneath sand during dry
season. W CA, Central Valley to Baja California. From
near sea level up to 4,500 ft elev.
Fed: None
Calif: SSC, S3
BLM: S
MSHCP: AC
Low; no or marginal habitat, six documented
occurrences within 5 mi. (1978 to 2017, 3.8 to 4.3 mi.
E of site and 4.1 to 4.8 mi. NE of site), not observed
during surveys but surveys done during dry season.
Reptiles
Anniella stebbinsi (Anniella pulchra
pulchra)
Southern California legless lizard
Various habitats, mainly shrublands, <6500 ft. elev.
Coast Ranges from Bay area to N Baja CA, SW Sierra
Nevada, parts of the Central Valley, Transverse &
Peninsular Ranges.
Fed: None
Calif: SSC, S3
USFS: S
Moderate; potentially suitable habitat, four
documented occurrences within 5 mi. (from 2017, 4.6
mi. S of site; two from 2016, along Santa Ana River,
4.7 mi. NW of site; from 1897, Riverside area – exact
location unknown, mapped 3.7 mi. N of site), not
observed during surveys but is secretive.
Arizona elegans occidentalis
California glossy snake
Arid scrub, rocky washes, grasslands, chaparral, often
with loose or sandy soils. Patchily distributed from the eastern portion of San Francisco Bay, southern San
Joaquin Valley, and the Coast, Transverse, and
Peninsular Ranges, south to Baja California. Sea level
to 7200’ elev. Nocturnal.
Fed: None
Calif: SSC, S2
Low; potentially suitable habitat, one documented
occurrence within 5 mi. (from 1946, Riverside area –
exact location unknown, mapped 3.7 mi. N of site),
not observed during surveys but is nocturnal.
Aspidoscelis hyperythra
Orange-throated whiptail
Low-elevation coastal scrub, chaparral, valley-foothill hardwood, sea level to 1040m. Sandy areas, patches
of rock. S CA, west of desert to tip of Baja CA.
Fed: None
Calif: WL, S2S3
USFS: S
MSHCP: AC
Moderate; potentially suitable habitat, 13 documented
occurrences within 5 mi. (from 1957 to 2010, closest
is 2.0 mi. from site), not observed during surveys.
Aspidoscelis tigris stejnegeri
Coastal whiptail
Primarily hot, dry open areas with sparse foliage,
chaparral, woodland, riparian; coastal So CA, mostly
west of Peninsular Ranges and south of Transverse
Ranges, north into Ventura County, below ±7000’
elev. and into Baja.
Fed: None
Calif: SSC, S3
MSHCP: AC
Low to moderate; potentially suitable habitat, two
documented occurrences within 5 mi. (from 1993, 4.2
mi. SE of site; from 2001, 3.8 mi. SW of site), not
observed during surveys.
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 103 L&L
Species Habitat and Distribution
Conservation
Status Potential for Occurrence
Crotalus ruber
Red-diamond rattlesnake
Desert scrub, thorn scrub, chaparral below 4,000ft.
San Bernardino County S through most of Baja
California, Mexico.
Fed: None
Calif: SSC, S3
USFS: S
MSHCP: AC
Not expected; no or marginal habitat, six documented
occurrences within 5 mi. (1931 to 2015, closest is 2.8
mi. from site), not observed during surveys.
Diadophis punctatus modestus
San Bernardino ringneck snake
Open relatively rocky areas within valley-foothill
locales, mixed chaparral/annual grasslands. Prefers
moist habitats. W San Diego & Riv. Cos., SW San
Bern., Vent. & LA Cos., NW Baja CA.
Fed: None
Calif: SA, S2?
USFS: S
Low; no or marginal habitat, one documented
occurrence within 5 mi. (from 2000, 4.9 mi. SSE of
site), not observed during surveys but is secretive.
Emys marmorata
Western pond turtle
Perennial ponds, streams, marshes, irrigation ditches.
Coastal S & cent. CA, NW Baja CA, below about 4800
ft. elev. (few higher elev. pops.)
Fed: None
Calif: SSC, S3
BLM: S
USFS: S
MSHCP: AC
Absent; no perennial aquatic habitat.
Phrynosoma blainvillii
Coast horned lizard
Coastal sage scrub, low elevation chaparral, annual
grassland, riparian scrub and woodlands, desert wash,
pinyon and juniper woodland, valley and foothill
grassland, 0-2438m elevation. SW California to NW
Baja California, Mexico.
Fed: None
Calif: SSC, S3S4
BLM: S
MSHCP: AC
Moderate; potentially suitable habitat, four
documented occurrences within 5 mi. (from 1989, 4.4
mi. NE of site, from 1989, 2.2 mi. SW of site; from
1957, 2.0 mi. S of site; from 1936, March AFB –
exact location unknown, 4.0 mi. ESE of site), not
observed during surveys.
Salvadora hexalepis virgultea
Coast patch-nosed snake
Shrublands, washes, sandy flats, rocky areas; Santa
Barbara county through southwest Calif., to northwest
Baja Calif.
Fed: None
Calif: SSC, S2S3
Low; potentially suitable habitat, no documented
occurrences within 5 mi., not observed during
surveys.
Thamnophis hammondii
Two-striped gartersnake
Usually in or near perennial fresh water & adjacent
riparian habitat, pools in streams. SW CA & NW Baja
California.
Fed: None
Calif: SSC, S3S4
BLM: S
USFS: S
Absent; no suitable habitat, no documented
occurrences within 5 mi., not observed during
surveys.
Birds
Accipiter cooperii
Cooper’s hawk
Cismontane woodland, riparian forest, riparian
woodland, upper montane coniferous forest. Forages
in open areas over scrublands; California, Mexico,
Central America. Nests in trees, often in dense
woods. Year-round resident in most of southern
California range. CNDDB only tracks nesting.
Fed: None
Calif: WL, S4
MSHCP: AC
Occurs (foraging), low (nesting); observed on the site
during surveys, no or marginal nesting habitat, no
documented occurrences (nesting) within 5 mi.
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 104 L&L
Species Habitat and Distribution
Conservation
Status Potential for Occurrence
Agelaius tricolor
Tricolored blackbird
Breeds colonially in freshwater marshes, nomadic
among marshes and fields in winter; almost completely
endemic to Calif. Year-round resident in southern
California range. CNDDB only tracks nesting.
Fed: BCC
Calif: THR, SSC,
S1S2
BLM: S
MSHCP: AC
Absent (foraging and nesting); no suitable habitat,
one documented occurrence (nesting) within 5 mi.
(from 1992, Sycamore Cyn, 3.0 mi. NE of site), few
eBird records in vicinity (Sycamore Cyn and
Riverside Nat’l Cemetery), not observed during
surveys.
Aimophila ruficeps canescens
Southern California rufous-crowned
sparrow
Sparse, mixed chaparral, scrub, rocky, brushy slopes.
Central California to Baja California. Year-round
resident in southern California range.
Fed: None
Calif: WL, S3
MSHCP: AC
Low to moderate (foraging and nesting); potentially
suitable habitat, two documented occurrences within
5 mi. (from 1997, 3.0 mi. SW of site; from 2001, 3.8
mi. SW of site), several eBird records in vicinity, not observed during surveys.
Aquila chrysaetos
Golden eagle
Found in a variety of habitats from sea level to 11,500 feet, rugged open habitats preferred. Large platform
nests constructed on secluded cliffs, large trees, and
occasionally structures (i.e., electrical transmission
towers). CNDDB tracks nesting and wintering.
Fed: BGEPA, BCC
Calif: FP, WL, S3
BLM: S
MSHCP: AC
Absent (foraging and nesting); no suitable habitat, no
documented occurrences (nesting or wintering) within
5 mi., several eBird records in vicinity (may be seen
soaring overhead), not observed during surveys.
Artemisiospiza belli belli
Bell’s sage sparrow
Sage scrub and chaparral communities. Nests mainly
in shrubs, also in grass, and occasionally on ground
under shrub. Found in coastal sage scrub in south of
range. Central Washington southward to Baja
California, Mexico. Year-round resident in southern
CA.
Fed: BCC
Calif: WL, S3
MSHCP: AC
Low to moderate (foraging and nesting), potentially
suitable habitat, one documented occurrence within 5
mi. (from 2001, 3.8 mi. SW of site), several eBird
records in vicinity, not observed during surveys.
Asio otus
Long-eared owl
Conifer, oak, riparian, pinyon-juniper, and desert
woodlands that are open or adjacent to grasslands,
meadows, or shrublands. Most of CA except Central
Valley, coastal LA and Orange Co., western Imperial
Co., and central Riverside Co. Very limited breeding
range in southern CA. CNDDB only tracks nesting.
Fed: None
Calif: SSC, S3?
Low (foraging), not expected (nesting); potentially
suitable foraging habitat, no suitable nesting habitat, no documented occurrences (nesting) within 5 mi.,
one eBird record in vicinity (2013, Sycamore Cyn),
not observed during surveys but is nocturnal.
Athene cunicularia
Burrowing owl
Nests in rodent burrows, usually in grasslands.
Forages in open habitat; increasingly uncomm. in S
CA. Occurs through W US/Mex. Sparse in desert
scrub but common around irrigated lands. CNDDB
tracks burrow sites and some wintering sites.
Fed: BCC
Calif: SSC, S3
BLM: S
MSHCP: AC c
Absent; potentially suitable habitat, six documented
occurrences within 5 mi., a few eBird records in
vicinity, not observed during protocol breeding
season surveys.
Baeolophus inornatus
Oak titmouse
Open pine or mixed oak-pine forest, juniper woodland,
pinyon or juniper mixed with Joshua trees. Not
migratory. CNDDB only tracks nesting.
Fed: BCC
Calif: none
Not expected (foraging and nesting); no suitable
habitat, no documented occurrences (nesting) within
5 mi., few eBird records in vicinity, not observed
during surveys.
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 105 L&L
Species Habitat and Distribution
Conservation
Status Potential for Occurrence
Buteo regalis
Ferruginous hawk
Open grasslands, sagebrush flats, desert scrub, low
foothills and fringes of pinyon and juniper habitats.
Great Basin grassland and scrub, pinyon and juniper
woodlands, valley and foothill grassland. Eats mostly
lagomorphs, ground squirrels, and mice. Population
trends may follow lagomorph population cycles. Does
not breed in southern CA.
Fed: BCC
Calif: WL, S3S4
MSHCP: AC
Not expected (foraging), absent (nesting); no suitable
habitat, no documented occurrences within 5 mi., few
eBird records in vicinity, not observed during surveys.
Buteo swainsoni
Swainson's hawk
Grassland/agricultural, large trees for nesting, desert scrub with Joshua tree & Fremont cottonwood
overstory, near streams & open fields. Breeds
overwhelmingly in Great Basin & Central Valley of
California. Seen in migration in southern California.
CNDDB only tracks nesting.
Fed: BCC
Calif: THR, S3
BLM: S
MSHCP: AC
Absent (foraging and nesting); no suitable habitat,
outside of known geographic nesting range, one
documented occurrence within 5 mi. (from 1889,
Riverside area – exact location unknown, mapped
3.0 mi. NW of site, possibly extirpated), several eBird records in vicinity (may be seen overhead during
migration), not observed during surveys.
Chamaea fasciata
Wrentit
Chaparral, oak woodland, shrublands, western CA,
northwestern Baja, western Oregon. Year-round
resident in southern CA range. CNDDB does not track
this species.
Fed: BCC
Calif: None
Low (foraging and nesting); no or marginal habitat,
several eBird records in vicinity, not observed during
surveys.
Coccyzus americanus occidentalis
Western yellow-billed cuckoo
Valley foothill and desert riparian. Inhabits extensive deciduous riparian thickets or forests with dense, low- level or understory foliage along slow-moving
watercourses, backwaters, or seeps. Willow almost
always a dominant component of the vegetation. Most
of the United States (excluding the NW states) & into
Baja California & northern Mexico. CNDDB only tracks
nesting.
Fed: THR, BCC
Calif: END, S1
BLM: S
USFS: S
MSHCP: AC a
Absent (foraging and nesting); no suitable habitat,
one documented occurrence (nesting) within 5 mi.
(from 1894, Riverside area – exact location unknown,
mapped 3.7 mi. N of site), no eBird records in vicinity, not observed during surveys.
Contopus cooperi
Olive-sided flycatcher
Uncommon to common summer breeding resident
throughout CA (except deserts, Central Valley, other
lowland valleys), variety of forest/woodland habitats
below 2800 m (9000 ft). Preferred nesting habitats
include mixed conifer, montane hardwood-conifer,
Douglas-fir, redwood, red fir, and lodgepole pine.
Requires large trees (usually conifers) for nesting and lofty perches for singing posts and hunting perches.
CNDDB only tracks nesting
Fed: BCC
Calif: SSC, S3
Not expected (foraging and nesting); no suitable
habitat, no documented occurrences (nesting) within
5 mi., not observed during surveys.
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 106 L&L
Species Habitat and Distribution
Conservation
Status Potential for Occurrence
Coturnicops noveboracensis
Yellow rail
Summer resident in eastern Sierra Nevada.
Freshwater marshlands. Occurs year round in
California, very local breeder in NE interior and winter visitor on the coast and Suisun Marsh region, central
and southern coastal US, parts of Canada, south
central Oregon.
Fed: BCC
Calif: SSC, S1S2
USFS: S (Lassen
and Shasta-Trinity
National Forests)
Absent (foraging and nesting); no suitable habitat, no
documented occurrences within 5 mi., no eBird
records in vicinity, not observed during surveys.
Dryobates (Picoides) nuttallii
Nuttall’s woodpecker
Found in low elevation riparian and oak woodlands;
rarely in conifers. Central Valley, Transverse and
Peninsular Ranges, Coast Ranges north to Sonoma
Co., lower portions of the Cascade Range and Sierra
Nevada. Year-round resident throughout coastal
mountains of CA. Not tracked in CNDDB.
Fed: BCC
Calif: None
Occurs (foraging), low (nesting); detected by
vocalization just south of the site, marginal nesting
habitat.
Elanus leucurus
White-tailed kite
Breeds in woodlands and riparian forests, forages over
open terrain; Pacific Coast (Calif, northern Baja,
Oregon), other scattered localities. Year-round
resident in southern CA range. CNDDB only tracks
nesting.
Fed: None
Calif: FP, S3S4
BLM: S
MSHCP: AC
Low (foraging), not expected (nesting); marginal
foraging habitat, a few eBird records in vicinity, no
suitable nesting habitat, no documented occurrences
(nesting) within 5 mi., not observed during surveys.
Empidonax traillii extimus
Southwestern willow flycatcher
Dense riparian forests, wet mountain meadow systems
with standing water for at least part of the breeding
season (May to July) & with ample numbers of willow
& other associated trees & shrubs. Rare & local in S
CA. SW US & N Baja California. CNDDB only tracks
nesting.
Fed: END
Calif: END, S1
MSHCP: AC a
Absent (foraging and nesting), no suitable habitat, no
documented occurrences (nesting) within 5 mi., not
incidentally observed during surveys.
Eremophila alpestris actia
California horned lark
Variety of open habitats with low growing vegetation or bare ground, grasslands, rangelands, “bald” hills, mtn. meadows, open coastal plains, fallow fields, alkali
flats. Within coastal Sonoma Co. to San Diego Co.,
San Joaquin Valley & E to foothills.
Fed: None
Calif: WL, S4
MSHCP: AC
Moderate (foraging), low (nesting); potentially
suitable habitat, two documented occurrences within
5 mi. (both from 1992, March Air Reserve Base, 4.2
mi. ESE and 4.0 mi. SE of the site), many eBird
records in vicinity, not observed during surveys.
Falco columbarius
Merlin
Woodlands, grasslands, agricultural fields, and areas
around livestock feed lots. Dense tree stands close to bodies of water are needed for cover. Uses a wide
variety of habitats. Winter migratory bird to southern
California.
Fed: None
Calif: WL, S3S4
MSHCP: AC
Low (foraging), absent (nesting); no suitable habitat,
outside of nesting range, no documented
occurrences within 5 mi., several eBird records in
vicinity, not observed during surveys.
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 107 L&L
Species Habitat and Distribution
Conservation
Status Potential for Occurrence
Haliaeetus leucocephalus
Bald eagle
Breed in large trees, usually near major rivers or lakes.
Winters more widely. Wide but scattered distribution
in N America, esp. coastal regions. CNDDB tracks
nesting and wintering.
Fed: Delisted,
BGEPA, BCC
Calif: END, FP, S3
MSHCP: AC
BLM: S
USFS: S
Absent (foraging and nesting), no suitable habitat,
three documented occurrences (nesting and
wintering) within 5 mi. (two from 1975 and one from
1981, all at Lake Mathews, about 5 mi. SW of site), a
few eBird records in vicinity (may be seen flying
overhead), not observed during surveys.
Icteria virens
Yellow-breasted chat
Summer resident, inhabits riparian thickets of willow
near watercourses, low dense riparian willow. Migrant
and summer resident in CA, northern CA, central
coast, eastern Central Valley, coastal southern CA,
Colorado River, western US, Canada, Mexico, Central
America. CNDDB only tracks nesting.
Fed: None
Calif: SSC, S3
MSHCP: AC
Absent (foraging and nesting); no suitable habitat, no
documented occurrences (nesting) within 5 mi., not
observed during surveys.
Lanius ludovicianus
Loggerhead shrike
Open areas where small trees, shrubs, and fences can
provide suitable perches. Nests in small trees and
large shrubs. Throughout much of North America.
CNDDB only tracks nesting.
Fed: BCC
Calif: SSC, S4
MSHCP: AC
Moderate (foraging and nesting); potentially suitable
habitat, one documented occurrence (nesting) within
5 mi. (from 1994, March Air Reserve Base, 2.5 mi. E
of site), several eBird records in vicinity, not observed during surveys.
Laterallus jamaicensis coturniculus
California black rail
Saline, brackish, and freshwater emergent wetlands.
San Francisco Bay area, Sacramento-San Joaquin
Delta, scattered locations on coastal southern CA,
Salton Sea, lower Colorado River, scattered locations
in US, Mex, Central America.
Fed: BCC
Calif: THR, FP, S1
BLM: S
Absent (foraging and nesting); no suitable habitat,
one documented occurrence within 5 mi. (from 1892,
Riverside area – exact location unknown, mapped
3.7 mi. N of site), no eBird records in vicinity, not
observed during surveys.
Pandion haliaetus
Osprey
Nests on snags, treetops or between large branches,
cliffs, or human built platforms with open surroundings.
Needs open water with shallow fishing grounds.
Throughout the US, with most nesting in the
northwestern states and east coast, and Canada. Rare
but possible in Southern CA. CNDDB only tracks
nesting.
Fed: None
Calif: WL, S4
MSHCP: AC
Absent (foraging and nesting); no suitable habitat, no
documented occurrences (nesting) within 5 mi.,
several eBird records in vicinity (may be seen in
migration), not observed during surveys.
Polioptila californica californica
Coastal California gnatcatcher
Sage scrub, also chaparral, grasslands, riparian
adjacent to or mixed with sage scrub below 2,500 ft
elevation. S Ventura Co. to LA, Orange, Riv., San
Bern., San D. Cos into Baja CA, Mexico.
Fed: THR
Calif: SSC, S2
MSHCP: AC
Moderate (foraging and nesting); potentially suitable
habitat, nine documented occurrences within 5 mi.
(from 1992 to 2006, closest is 0.6 mi. SSE of site),
several eBird records in vicinity, not incidentally
observed during surveys (by a biologist permitted for
this species).
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 108 L&L
Species Habitat and Distribution
Conservation
Status Potential for Occurrence
Selasphorus sasin
Allen’s hummingbird
Breeds in moist coastal areas, scrub, chaparral, and
forests. Winters in forest edge and scrub clearings
with flowers. Breeds in and migrates through CA. Not
tracked in CNDDB.
Fed: BCC
Calif: None
High (foraging), absent (nesting); potentially suitable foraging habitat, outside of the coastal breeding
range, many eBird records in vicinity, not observed
during surveys.
Setophaga petechia
Yellow warbler
Migrant and summer resident in southern CA.
Riparian, including willow, cottonwood, sycamore,
alder, aspen for nesting & foraging, also conifer forest.
CNDDB only tracks nesting.
Fed: BCC
Calif: SSC, S3S4
Absent (foraging and nesting); no suitable habitat, no
documented occurrences (nesting) within 5 mi.,
several eBird records in vicinity (in/near riparian
areas), not observed during surveys.
Spinus lawrencei
Lawrence’s goldfinch
Summer breeder, may overwinter. Coastal side of
southern and central CA, western edge of southern
deserts, east side of Central Valley into northern CA,
Colorado River, SW US and northern Mex. Valley
foothill hardwood and hardwood-conifer, desert
riparian, pinyon juniper, palm oasis, lower montane.
Nests in oaks, conifers. CNDDB only tracks nesting.
Fed: BCC
Calif: SA, S4
Low (foraging), not expected (nesting); marginal
habitat; no documented occurrences (nesting) within
5 mi., many eBird records in vicinity, not observed
during surveys.
Toxostoma lecontei
Le Conte’s thrasher
Desert resident; primarily of open desert wash, desert
scrub, alkali desert scrub, and desert succulent scrub
habitats. Commonly nests in a dense, spiny shrub or
densely branched cactus in desert wash habitat,
usually 2-8 feet above ground.
Fed: BCC
Calif: SSC*, S3
BLM: S*
*San Joaquin
population only
Absent (foraging and nesting); no suitable habitat, no
documented occurrences within 5 mi., no eBird
records in vicinity, not observed during surveys.
Vireo bellii pusillus
Least Bell’s vireo
Riparian woodlands, bottomlands. N Mex. & Baja CA
into S CA & the S mid-western US. CNDDB only
tracks nesting.
Fed: END
Calif: END, S2
MSHCP: AC a
Absent (foraging and nesting); no suitable habitat, 22
documented occurrences within 5 mi. (from 2007 to
2015, closest is in Prenda Arroyo, 0.5 mi. E of site),
not incidentally observed during surveys.
Mammals
Antrozous pallidus
Pallid bat
Rock outcrops of shrublands, ≤ 6000’ elevation;
southwest North America to interior Oregon and
Washington; hibernates in winter. Locally common at
low elevations in grasslands, shrublands, woodlands,
and forests. Most common in open, dry habitats with
rocky areas for roosting. Forages over open ground.
Roosts in caves, crevices, mines, hollow trees,
buildings. Very sensitive to disturbance of roosting
sites.
Fed: None
Calif: SSC, S3
BLM: S
USFS: S
Moderate (foraging), low (roosting); potentially
suitable habitat, ongoing disturbance reduces
potential for roosting, no documented occurrences
within 5 mi., no evidence of bat roosting observed
during surveys.
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 109 L&L
Species Habitat and Distribution
Conservation
Status Potential for Occurrence
Chaetodipus (Perognathus) fallax
fallax
Northwestern San Diego pocket
mouse
Sandy herbaceous areas, usually in association with
rocks or coarse gravel, chaparral, coastal scrub,
grasslands. SW CA & NW Baja California (inland to
San Bernardino Valley).
Fed: None
Calif: SSC, S3S4
MSHCP: AC
Moderate; potentially suitable habitat, six
documented occurrences within 5 mi. (from 1992 to
1999, closest is 1.9 mi. NE of site).
Dipodomys merriami parvus
San Bernardino kangaroo rat
Alluvial floodplains and adjacent upland habitats within the San Bernardino, Menifee, and San Jacinto valleys,
Riversidean alluvial fan sage scrub.
Fed: END
Calif: CanE, SSC,
S1
MSHCP: AC c
Low; potentially marginal upland habitat adjacent to
offsite alluvial area (Prenda Creek), outside of current known geographic range, two documented
occurrences within 5 mi. (from 1908, exact location
unknown, mapped 2.6 mi. SE of site; from 1952,
exact location unknown, mapped 1.6 mi. NW of site).
Dipodomys stephensi
Stephens' kangaroo rat
Sparse, gently sloping grassland, sometimes at
margins of cultivated or disturbed lands; prefers
grassland dominated by forbs rather than annual
grasses, prefers sparse perennial vegetation; firm soil for burrowing (not too hard or too sandy); may use
abandoned gopher burrows; W Riverside Co. and
adjacent San Diego Co. San Bernardino County
occurrences extirpated. No critical habitat has been
designated.
Fed: END
Calif: THR, S2
MSHCP: AC
Low; no or marginal habitat, 30 documented
occurrences within 5 mi. including a large (over 2,000
acres) mapped occurrence from 1999 (EO #69) that
includes the eastern portion of the site as well as
large areas to the north and south, it is likely that
portions of this occurrence have been extirpated.
Eumops perotis californicus
Western mastiff bat
Lowlands (with rare exceptions), many open, semi-arid
to arid habitats, conifer and deciduous woodlands,
coastal scrub, grasslands, chaparral. Central & S CA,
S AZ, NM, SW TX. Roosts in deep rock crevices, high
buildings, trees, and tunnels; forages over wide area.
Fed: None
Calif: SSC, S3S4
BLM: S
Moderate (foraging), low (roosting); potentially
suitable foraging habitat, no or marginal roosting
habitat, no documented occurrences within 5 mi., no
evidence of bat roosting observed during surveys.
Lasiurus xanthinus
Western yellow bat
Valley foothill riparian, desert riparian, desert wash, palm oasis. Roosts in trees, particularly palms.
Forages over water and among trees. Desert regions
of the SW US. Distributed in S CA, AZ, NM, & TX, into
Mexico.
Fed: None
Calif: SSC, S3
Low (foraging), not expected (roosting); no or
marginal foraging habitat, one documented
occurrence within 5 mi. (from 1996, Riverside area –
exact location unknown, mapped 3.0 mi. NW of site),
no evidence of bat roosting observed during surveys.
Lepus californicus bennettii
San Diego black-tailed jackrabbit
Chaparral, coastal, or Riversidean sage scrub with
adjacent open grassland. Los Angeles Co. S to San
Quintin, Baja California, Mexico.
Fed: None
Calif: SSC, S3S4
MSHCP: AC
Low; no or marginal habitat, two documented
occurrences within 5 mi. (from 2001, 3.8 mi. SW of
site; from 2005, 3.0 mi. SE of site), not observed
during surveys.
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 110 L&L
Species Habitat and Distribution
Conservation
Status Potential for Occurrence
Myotis yumanensis
Yuma myotis
Variety of habitats, optimal habitat is open forest with water sources over which to feed. Widespread in CA
except for deserts. Elev. 0-11,000 ft but rare over
8,000 ft. Feeds over ponds and streams. Roosts in
buildings, mines, caves, or crevices, under bridges.
Hibernates in winter.
Fed: None
Calif: SA, S4
BLM: S
Low (foraging and roosting); no or marginal foraging
habitat, potentially suitable roosting habitat, no
documented occurrences within 5 mi., no evidence of
bat roosting observed during surveys.
Neotoma lepida intermedia
San Diego desert woodrat
Arid shrublands, rocky outcrops, & crevices.
Cismontane CA., San Luis Obispo to San Diego Co. &
NW Baja California. 0-7000 ft. elev. Variety of shrub
and desert habitats, primarily associated with rock
outcroppings, boulders, cacti, or areas of dense
undergrowth. Constructs elaborate middens of sticks
and other materials.
Fed: None
Calif: SSC, S3S4
MSHCP: AC
Occurs; four middens observed onsite although no
evidence of current occupation.
Nyctinomops femorosaccus
Pocketed free-tailed bat
Deserts & arid lowlands, pinyon juniper woodlands,
desert scrub, riparian scrub, Joshua tree woodland,
rocky areas with high cliffs. E Riverside & San Diego
Cos. and Imperial Co., through SW US, Baja
California, mainland Mexico. Roost mainly in crevices
of high cliffs. Few records in So CA. Prefers rocky
desert areas with high cliffs or rock outcrops. Feeds
over ponds, streams, and arid desert.
Fed: None
Calif: SSC, S3
Not expected (foraging and roosting), no suitable
habitat, two documented occurrences within 5 mi.
(from 1985, March Air Reserve Base, 4.0 mi. SE of
site; 1988, Riverside area – exact location unknown,
mapped 2.9 mi. NW of site), no evidence of bat
roosting observed during surveys.
Onychomys torridus ramona
Southern grasshopper mouse
Nocturnal, active year-round. Desert scrub, coastal
scrub, mixed chaparral, sagebrush, especially scrub
habitats with friable soil, prefers low to moderate shrub cover. LA through San Diego counties and northwest
Baja.
Fed: None
Calif: SSC, S3
Low; potentially suitable or marginal habitat, one
documented occurrence within 5 mi. (from 1908, 3.2
mi. E of site).
Perognathus longimembris
brevinasus
Los Angeles pocket mouse
Nocturnal, active Apr-Aug. Annual grassland, sage
scrub, alluvial sage scrub. S California from Rancho
Cucamonga (W boundary), San Gorgonio (E),
Aguanga & Oak Grove, San Diego (S). Open ground
with fine, sandy soils.
Fed: None
Calif: SSC, S1S2
MSHCP: AC c
Low; potentially suitable habitat, two documented
occurrences within 5 mi. (both on March Air Reserve
Base; from 1992, 4.2 mi. ESE of site; from 1993, 4.6
mi. ESE of site).
Taxidea taxus
American badger
Mountains, deserts, interior valleys where burrowing
animals are available as prey & soil permits digging.
Throughout Central & W North America.
Fed: None
Calif: SSC, S3
Low; potentially suitable or marginal habitat, no
documented occurrences within 5 mi., no evidence of
badger burrows or diggings observed during surveys.
References: CDFW (2021b, 2021c), USFWS (2021), Dudek (2003), RCA (2020); Cornell (2021); eBird (2021); USFS (2013) REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 111 L&L
“Documented occurrences” refers to species occurrences in the California Natural Diversity Database (CNDDB) unless otherwise noted. For plant species that are not tracked in the CNDDB, records from the Consortium of California Herbaria (CCH) may be used (only CCH records that in clude map coordinates are utlized) . EBird (eBird.org) is an online database of bird distribution and abundance sponsored by the Cornell Laboratory of Ornithology and compiled from observations submitted by citizen scientists. eBird records of bird observations are noted but should be interpreted with caution. eBird records “in vicinity” means records within about a 5-mile radius of the site.
Federal designations: (Federal Endangered Species Act, U.S. Fish and Wildlife Service):
END: Federally listed, endangered; an animal or plant in danger of extinction within the foreseeable future throughout all or a significant portion of its range.
THR: Federally listed, threatened; an animal or plant which is likely to become an Endangered species within the forese eable future throughout all or a significant portion of its range.
Cand Candidate for federal listing as threatened or endangered; species that has been studied by the U.S. Fish and Wildlife Service, and the Service has concluded that it should be proposed for addition to the Federal Endangered and Threatened species list.
Prop Proposed for federal listing as Endangered or Threatened under Section 4 of the Endangered Species Act.
Delisted: Previously federally listed as endangered or threatened, but is no longer listed (e.g., due to recovery).
None: The species has no federal conservation status.
BGEPA: Federal Bald and Golden Eagle Protection Act; protects bald and golden eagles.
BCC: USFWS Bird of Conservation Concern; migratory and non -migratory bird species (beyond those already designated as Federally threatened or endangered) that represent USFWS highest conservation priorities.
State designations: (California Endangered Species Act, California Dept. of Fish and Wildlife) END: State listed, endangered; a native species or subspecies of a bird, mammal, fish, amphibian, reptile, or plant which is in se rious danger of becoming extinct throughout all, o r a significant portion, of its range due to one or more causes, including loss of habitat, change in habitat, overexploitati on, predation, competition, or disease.
CanE: Candidate Endangered; a native species or subspecies of a bird, mammal, fish, amphibi an, reptile, or plant that the Fish and Game Commission has formally noticed as being under review by the Department of Fish and Wildlife for addition to the list of endangered species, or a spe cies for which the commission has published a notice of proposed regulation to add the species to the list of endangered species.
CanT: Candidate Threatened; a native species or subspecies of a bird, mammal, fish, amphibian, reptile, or plant that the Fish and Game Commission has formally noticed as being under review by the Department of Fish and Wildlife for addition to the list of threatened species, or a species for which the commissio n has published a notice of proposed regulation to add the species to the list of threatened species.
THR: State listed, threatened ; a native species or subspecies of a bird, mammal, fish, amphibian, reptile, or plant that, although not presently threatene d with extinction, is likely to become an endangered species in the foreseeable future in the absence of special protection and man agement efforts.
RARE: State listed as rare: a native plant species, subspecies, or variety when, although not presently threatened with extinction, it is in such small numbers throughout its range that it may become endangered if its present environment worsens (Native Plant Protection Act of 1977).
SSC: CDFW Species of Special Concern; vertebrate species of concern due to declining population levels, limited ranges, and/or con tinuing threats that have made them vulnerable to extinction.
FP: Fully Protected; California Fish and Game Code states that Fully Protected species "...may not be taken or possessed at any time and no provision of this code or any other law shall be construed to authorize the issuance of permits or licenses to take any fully protecte d" species, although take may be authorized for necessary scientific research.
Delisted: Previously state listed as threatened or endangered, but no longer listed (e.g., due to recovery).
SA: CDFW Special Animal; wildlife of state conservation concern.
SH: All California sites are historical, still some hope of rediscovery.
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
QUIN-05-R752.BA1.BO2.RTC6 clean 112 L&L
SX: All California sites are historical, presumed extirpated.
PFB: Protected Fur-bearing Mammal under Title 14 of the California Code of Regulations.
None: The species has no state conservation status.
State Rank (S Rank): A reflection of the condition and imperilment of an element (plant, animal, vegetation community) throughout its range within the state. The S ranks are determined through a combination of rarity, threat, and trend fa ctors, weighted more heavily on the rarity factors. Where correct category is uncertain, the S rank includes two categories or a question mark. Older ranks, which need to be updated, may still contain a decimal "threat" rank of .1, .2, or .3, where .1 indicates very threatened status, .2 indicates moderate threat, and .3 indicates few or no current known threats.
S1: Critically imperiled; imperiled in the state because of extreme rarity or some factor(s) making it especially vulnerable to e xtirpation from the state.
S2: Imperiled; imperiled in the state because of rarity due to very restricted range, very few populations, steep declines, or ot her factors making it very vulnerable to extirpation from the state or nation.
S3: Vulnerable; vulnerable in the state due to a restricted range, relatively few populations, recent and widespread declines, or other factors making it vulnerab le to extirpation.
S4: Apparently secure; uncommon but not rare, some cause for long-term concern due to declines or other factors.
S5: Secure; common, widespread, and abundant in the state.
SH: Possibly extirpated; species or community occurred historically in the state, and there is some possibility that it may be re discovered. The element has not been seen for at least 20 years, but suitable habitat still exists.
SX: Presumed extirpated; species or community is believed to be extirpated from the state.
California Rare Plant Rank (CRPR): The California Rare Plant Ranks are a ranking system originally developed by the California Native Plant Society (CNPS) to better define and categorize rarity in California's plants. These ranks were previously known as the CNPS lists but were renamed to the California Rare Plant Ranks to better reflect the joint effort among the CNPS, the CDFW, and a wide range of botanical experts, who work together to assign a rarity ranking. 1A: Plants presumed extinct in California and rare/extinct elsewhere. 1B: Plants rare, threatened, or endangered in California and elsewhere. 2A: Plants presumed extirpated in California, but more common elsewhere. 2B: Plants rare, threatened, or endangered in California but more common elsewhere. 3: Plants about which we need more information.
4: Plants of limited distribution.
X.1: Extension to CRPR (e.g., 1B.1); seriously threatened in California.
X.2: Extension to CRPR (e.g., 1B.2); fairly threatened in California.
X.3: Extension to CRPR (e.g., 1B.3); not very threatened in California.
CBR: Considered but rejected.
U.S. Forest Service (USFS) designation:
S: Sensitive; plant and animal species identified by a regional forester that are not listed or proposed for listing under the F ederal Endangered Species Act for which population viability is a concern, as evidenced by significant current or predicted downward trends in population numbers or density, or significant current or predicted downward trends in habitat capability that would reduce a species’ existing distribution.
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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Bureau of Land Management (BLM designation:
S: Sensitive; plant and animal species requiring special management consideration to promote their conservation and reduce the l ikelihood for future listing under the Federal Endangered Species Act. Includes species designated as sensitive by the BLM Sta te Director and all Federal Candidate species and Federal delisted species in the 5 years following delisting. Sensitive species are managed as special status species.
Western Riverside County Multiple Species Habitat Conservation Plan: Applied to species that are covered under state and federal permits for the MSHCP.
NAC: Species Not Adequately Conserved
AC: Species Adequately Conserved
(a): Surveys may be required for these species as part of wetlands mapping as described in Section 6.1.2 of the MSHCP. (b): Surveys may be required for these species within Narrow Endemic Plant Species survey area as described in Section 6.1.3 of the MSHCP. (c): Surveys may be required for these species within locations shown on survey maps as described in Section 6.3.2 of the MSHCP. (d): Surveys may be required for these species within Criteria Area as described in Section 6.3.2 of the MSHCP. (e): These Covered Species will be considered Adequately Conserved when conservation requirements identified in species -specific conservation objectives have been met. Species-specific conservation objectives for these species are presented in Section 9.0 of the MSHCP. Please refer to Table 9 -3 of the MSHCP for specific conservation objectives that must be met for these species prior to including them on the list of Covered Species Adequately Conserved. (f): These Covered Species will be considered Adequately Conserve d when a Memorandum of Understanding is executed with the U.S. Forest Service that addresses management for these species on Forest Service Land. Refer to Table 9 -3 of the MSHCP.
No entry: Not a Covered Species
Definitions of occurrence probability:
These definitions provide general guidance. Classifications for individual species may be modified based on biologists’ expe rience and expert opinion.
Occurs: Species was detected during surveys or previously documented on the Project site or adjacent areas.
High: Species documented in the vicinity (i.e., within 5 miles) of the Project site and suitable habitat is present, but species no t detected during surveys.
Moderate: Species documented in the vicinity of the Project site or suitable habitat present and site is within geographic and elevational range of the species .
Low: Species not documented in the vicinity of the Project site or suitable habitat is marginal .
Not Expected: Species not documented in the vicinity of the Project site and suitable habitat marginal or absent, or site is not within geographic and elevational range of the species.
Absent: No potential for the species to occur due to lack of habitat, geographic or elevation range, species life history, survey res ults, etc.
Unknown: No focused surveys have been performed in the region, and the species' distribution and habitat are poorly kn own.
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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APPENDIX C: SITE PHOTOGRAPHS
Developed/ornamental area of the site, existing residence on Lot 1 is visible on the left, northwest corner of the site , facing south-southwest (06.22.2021).
Existing residence on Lot 1 with lawn and ornamental
vegetation, northwest corner of site, facing southwest
(06.22.2021).
Disturbed area of the site, north-central area of the site, facing west (06.22.2021).
Disturbed area of the site , existing residence on Lot 1 in background, southwest corner of the site , facing north (06.22.2021).
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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Disturbed area surrounding one of the wells on the property, northeast area of the site, facing north-northwest (06.22.2021).
Road on the property leading to the wells, northeast area of the site, facing west-southwest (06.22.2021).
Disturbed brittlebush scrub, southwest portion of site , facing south-southeast (07.28.2021).
Disturbed brittlebush scrub, south east portion of site , facing southwest (07.19.2021).
Relatively undisturbed brittlebush scrub and rock piles in northeast corner of site, eastern well visible on left, facing north (09.07.2021).
Relatively undisturbed brittlebush scrub in southeast portion of site, facing northwest (06.22.2021).
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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Relatively undisturbed brittlebush scrub, southeast corner of the site, facing north, eastern fence line visible on right (06.22.2021).
Woodrat midden in northeast corner of site , facing north (09.07.2021).
Woodrat midden in northeast corner of site , facing east (09.07.2021).
Woodrat midden in northeast corner of site, facing south (09.07.2021).
Native blue elderberry tree, southeast portion of site, facing southeast (07.28.2021).
Native black willow tree on eastern boundary with trunk offsite and canopy extending over the fence line, facing southeast (06.22.2021).
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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Ornamental trees by existing residence on Lot 1, southwest corner of site, facing northwest (07.28.2021).
Ornamental acacia trees along northern fence line on right. One of the palm trees on the site is visible in the background, northeast corner, facing west (06.22.2021).
Drainage at eastern boundary of site where it enters the property, facing east /upstream. Offsite willow visible at left (09.07.2021).
Drainage in southeast portion of property, facing
northeast/upstream (09.07.2021).
Drainage along southern boundary of site in south -central portion of property, facing west/downstream (09.07.2021).
Drainage along southern boundary of site in southwest portion of property, facing west/downstream (06.22.2021).
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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Drainage along southern boundary of site in southwest corner of property where it leaves the site, facing east/upstream. Non- native Peruvian pepper tree visible on right (09.07.2021).
Riparian vegetation in Prenda Creek about 440 feet southeast of the site, facing east (09.07.2021).
Riparian vegetation in Prenda Creek about 330 feet south of the site, facing north. The site is visible in the background (09.07.2021).
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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APPENDIX D: RIVERSIDE COUNTY DOCUMENTATION
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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Certification
Certification: I hereby certify that the statements furnished above and in the attached exhibits present the data and information required for this biological evaluation, and that the facts, statements, and information presented are true and correct to the best of my knowledge and belief.
DATE: revised May 10, 2023 SIGNED:
Leslie Irish, Principal, L&L Environmental, Inc.
909-335-9897
1) Fieldwork Performed By: 2) Fieldwork Performed By:
Guy Bruyea Leslie Irish
Name Name
3) Fieldwork Performed By: 4) Fieldwork Performed By:
Name Name
5) Fieldwork Performed By: 6) Fieldwork Performed By:
Name Name
Check here if adding any additional names/signatures below or on other side of page.
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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BIOLOGICAL REPORT SUMMARY SHEET
Applicant Name: LandBuild
Assessor’s Parcel Number(s): 243-230-027 (243-600-025 on RCA MSHCP Map) Section, Township and Range: Section 13, Township 3 South, Range 5 West Building and Safety Log Number:
Case Number: TPM 38174 Lot/Parcel EA Number
MARK ITEM(S)
SURVEYED FOR
SPECIES or ENVIRONMENTAL ISSUE of
CONCERN
(Mark Yes, No, or N/A
regarding species findings on
the referenced site)
Yes No n/a
Arroyo Southwestern Toad X
X Blueline Stream(s) X
X Burrowing Owl X
Coachella Valley Fringed-toed Lizard X
Coastal California Gnatcatcher X
X Coastal Sage Scrub X
Delhi Sands Flower-loving Fly X
Desert Pupfish X
Desert Slender Salamander X
Desert Tortoise X
Flat-tailed Horned Lizard X
X Least Bell’s Vireo (habitat) X
X Oak Woodlands X
Quino Checkerspot Butterfly X
X Riverside Fairy Shrimp (habitat) X
Santa Ana River Woolystar X
San Bernardino Kangaroo Rat X
Slender-horned Spineflower X
Stephens’ Kangaroo Rat X
X Vernal Pools X
X Wetlands (MSHCP Riverine) X
X Cooper’s hawk X
X Nuttall’s woodpecker X
X San Diego desert woodrat (middens) X
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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Species of concern shall be any unique, rare, endangered, or threatened species. It shall include species used to delineate wetlands and riparian corridors. It shall also include any hosts, perching, or food plants used by any animals listed as rare, end angered, threatened, or candidate species by either state, or federal regulations, or for Riverside County as listed by the California Department of Fish and Game Natural Diversity Data Base (CNDDB).
I declare under penalty of perjury that the information provided on this summary sheet is in accordance with the information provided in the biological report or habitat assessment.
_____________________L & L Environmental, Inc. revised May 10, 2023 Signature and Company Name Date
___________________________________________
10(a) Permit Number (if applicable) Permit Expiration Date
County Use Only
Received By: _________________________________________ Date: ____________________ PD-B# ______________________________________________
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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Attachment E-4
LEVEL OF SIGNIFICANCE CHECKLIST
For Biological Resources
(Submit two copies to the County)
Case Number: TPM 38174 Lot/Parcel No. _____________ EA Number Assessor's Parcel Number(s): 243-230-027 (APN 243-600-025 on RCA MSHCP Information Map)
Date: May 10, 2023
Biological Resources: (Check the level of impact that applies to the following questions.)
Potentially Less than Significant Less than No
Significant Impact with Mitigation Significant Impact
Impact Incorporated Impact
a) Conflict with the provisions of an adopted Habitat Conservation Plan, Natural Conservation Community Plan, or other approved local, regional, or state conservation plan?
b) Have a substantial adverse effect, either directly or through habitat modifications, on any endangered, or threatened species, as listed in Title 14 of the California Code of Regulations (Sections 670.2 or 670.5) or in Title 50, Code of Federal Regulations (Sections 17.11 or 17.12)?
c) 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 regulatio ns, or by the California Department of Fish and Game, or U.S. Fish and Wildlife Service?
d) Interfere substantially with the movement of any native resident or migratory fish or wildlife species, or with established native resident migratory wildlife corridors, or impede the use of native wildlife nursery sites?
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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LEVEL OF SIGNIFICANCE CHECKLIST
For Biological Resources
(Submit two copies to the County)
e) Have a substantial adverse effect on any riparian habitat, or other sensitive natural community identified in local or regional plans, policies, regulations, or by the California Department of Fish and Game, or the U. S. Fish and Wildlife Service?
f) Have a substantial adverse effect on federally protected wetlands, as defined by Section 404 of the Clean Water Act (including, but not limited to, marsh, vernal pools, coastal, etc.) through direct removal, filling, hydrological interruption)
g) Conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance?
Findings of Fact:
The site is largely within the mapped extent of the Prenda Arroyo in the City Municipal Code Section 17.08.011, but the Project disturbance area is not within the actual boundaries of the arroyo. There are no riparian, Riversidean alluvial fan sage scrub, or other sensitive vegetation communities present.
No listed or special status plant species were observed. Payson’s jewelflower has potential to occur but is covered under the MSHCP and considered adequately conserved.
There are no oak trees present. Other trees are present, mostly non-native.
Cooper’s hawk and San Diego desert woodrat present; these are covered under the MSHCP and considered adequately conserved. Nuttall’s woodpecker present; not covered under the MSHCP.
Most other wildlife species with potential to occur are covered under the MSHCP and considered adequately conserved. Impacts to non -covered species would be less than significant. Crotch bumble bee has a potential for occurrence on the site and it is a candidate for state listing as endangered.
No vernal pools or ponding areas and no habitat for fairy shrimp. No habitat for riparian birds present on the site. Potential habitat for least Bell's vireo and southwestern willow flycatcher in nearby Prenda Creek but grading limits are over 300 feet away.
No burrowing owls or owl sign observed; suitable habitat is present . Habitat for nesting birds present.
Onsite drainage may function as a corridor and contribute to limited local wildlife movement.
CDFW streambed and federal Waters of the U.S. present, as well as MSHCP riverine. Project will avoid the drainage and permits from USACE, RWQCB, and CDFW and a DBESP are not required.
Proposed Mitigation:
Preconstruction survey for burrowing owl within 30 days prior to the start of Project activities . If burrowing owl is present, avoidance of occupied burrows during nesting season and develop and implement a mitigation plan based on MSHCP requirements.
Nesting bird clearance survey within three (3) days prior to the start of Project activities (vegetation and ground disturbance , including tree trimming/removal/encroachment ) within the nesting season (February 1 to August 31). Avoidance buffers for active nests.
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Conduct a focused survey for Crotch bumble bee. If present, consult with CDFW and obtain an incidental take permit from CDFW if any impacts.
If Project grading will occur within 300 feet of riparian habitat in Prenda Creek, conduct a habitat assessment for riparian birds (least Bell's vireo, southwestern willow fl ycatcher, and western yellow-billed cuckoo) and a protocol survey if suitable habitat is present. Implement avoidance measures if species are present.
Monitoring Recommended:
None.
Source: CGP Fig. VI.36-VI.40
Revised October 1999
REVISED Biological Resources Assessment and Burrowing Owl Survey Alpine Meadows Estates, City of Riverside, Riverside County, California May 2023
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APPENDIX E: TENTATIVE PARCEL MAP 38174 AND
FUEL MODIFICATION ZONE
KINGDOM DRIVE
LOT 1LOT 2LOT 3LOT 4
ALPINE MEADOWS LANE
OPEN SPACE EASEMENTOPEN SPACE EASEMENTOPEN SPACE EASEMENT TENTATIVE PARCEL MAP NO. 38174
SHEET 1 OF 1
PRECISE GRADING PLAN
SOLITUDE COURT
LEGEND
FH FHFH
ALPINE MEADOWS LANE CL
KINGDOM DRIVECL
Tract 38174Alpine Meadows LaneRiverside, CA 92506APN: 243-230-027-0000 JOB: 22-04 CKE LKDRichard Pope, Landscape Architect CA# 26641585 South 'D' Street, Suite 202San Bernardino, CA 92408phone: (909) 888-5568e-mail: [email protected] a n d s c a p e A r c h i t e c t u r eR I C H A R D FIRE PROTECTION PLANThree Single Family Homes
January 26, 2022Scale: 1" =40'NORTH
Ryan Williams1649 Harrison Ln.Redlands CA 92374Contact: Ryan WilliamsPhone: (909)471-0808Email: [email protected]:
12/9/2022EXP.02/28/24
I AGREE TO COMPLY WITH THE REQUIREMENTS OF THE CITY'S WATER EFFICIENT LANDSCAPEORDINANCE AND SUBMIT A COMPLETE LANDSCAPE DOCUMENTATION PACKAGESIGN DATE12/9/2022www.richardpopeandassociates.com Northnot to scaleVicinity Map
ALPINE MEADOWS LN.SITEBRADLEY ST.
HARBART DR.
WASHINGTON ST.
HORIZON VIEW DR.KINGDOM DR.
RUTH WAYGOLDEN STAR AVE.MILLIGAN DR.HIGHRIDGE ST.
GOLDEN GULCH RD.SLIVER HILLS DR.PINE CREST DR.WESTBROOK DR.EAST GATE DR.ARROYO VISTA CT.FEATHERSTONE CT.
WOODSHOLE CT.WEST PARK DR.GILCROSS WY.RIDGELINE DR.JESSAMINE CT.DUSTIN CT. 0204080120160SHEET 1 OF 2
OUTLINE DENOTESWQMP AREAOUTLINE DENOTESWQMP AREAOUTLINE DENOTESWQMP AREA
HATCH DENOTESOPEN SPACE AREAPROPERTY LINEEXTENT OF PROJECT ZONE 130' FROM STRUCTUREZONE 2DISTANCE VARIESTHINNING ZONEPROPERTY LINEEXTENT OF PROJECTPROPERTY LINEEXTENT OF PROJECT NON-MAINTAINEDOPEN SPACE2-HOUR STRUCTURE EXTERIOR WALL ASSEMBLYWINDOWS FACING OPEN SPACE 4TEMPERED GLASS SHEETS50' ARROYOSETBACK2-HOUR STRUCTURE EXTERIOR WALL ASSEMBLYWINDOWS FACING OPEN SPACE 4TEMPERED GLASS SHEETS2-HOUR STRUCTURE EXTERIOR WALL ASSEMBLYWINDOWS FACING OPEN SPACE 4TEMPERED GLASS SHEETS
\\DARWIN\Shared Folders\Unified Projects\QUIN-05-752 Alpine Meadows\2021 BA1.BO2.CD1\Report\QUIN-05-R752.CD1 (final).rev4 clean.docx
Celebrating 20+ Years of Service to Southern CA and the Great Basin, WBE Certified (Caltrans, CPUC, WBENC) Mailing Address: 700 East Redlands Blvd, Suite U, PMB#351, Redlands CA 92373 Delivery Address: 721 Nevada Street, Suite 307, Redlands, CA 92373 Webpage: llenviroinc.com | Phone: 909-335-9897 | FAX: 909-335-9893
WESTERN RIVERSIDE COUNTY
MULTIPLE SPECIES HABITAT CONSERVATION PLAN
CONSISTENCY ANALYSIS
ALPINE MEADOWS ESTATES, TPM 38174,
CITY OF RIVERSIDE, RIVERSIDE COUNTY, CALIFORNIA
Permittee:
City of Riverside
Community and Economic Development, Planning Division
Alyssa Berlino, Associate Planner
3900 Main Street
Riverside, CA 92522
Phone: 951.826.5371
[email protected]
Applicant:
Jerardo Reyes and Ryan Williams
785 Woodcrest Court
Bloomington, CA 92316
909-471-0342
[email protected] and [email protected]
Consultant:
Leslie Irish
L&L Environmental, Inc.
700 East Redlands Blvd., #U351
Redlands, CA 92373
Phone: 909.335.9897
[email protected]
SEPTEMBER 2021, REVISED AUGUST 2022, OCTOBER 2022, MARCH 2023