Pala Park Bank Stabilization Project: Geotechnical Exploration

TABLE OF CONTENTS

SECTION 1.0 COUNTY OF RIVERSIDE ATTACHMENTS

Biological Report Summary Report (Attachment E-3) Level of Significance Checklist (Attachment E-4) Biological Resources Map (Attachment E-5) Site Photographs (Attachment E-6)

SECTION 2.0 HABITAT ASSESSMENT

General Site Information ...... 1 Methods ...... 2 Existing Conditions ...... 4 Special Status Resources ...... 8 Other Issues ...... 14 Recommendations ...... 14 References ...... 16

LIST OF TABLES

Page

1 Special Status Plant Species Known to Occur in the Vicinity of the Survey Area ...... 10 2 Chaparral Sand-Verbena Populations Observed in the Survey Area ...... 12 3 Paniculate Tarplant PopulationS Observed in the Survey Area ...... 12

LIST OF EXHIBITS

Follows Page

1 Project Location ...... 1 2 U.S. Geological Survey 7.5-Minute Quadrangle ...... 1 3 Soil Types ...... 1 4 Western Riverside County Multiple Species Habitat Conservation Plan ...... 2 5 Biological Resources ...... 4 6 Public/Quasi-Public Lands ...... 13

LIST OF APPENDICES

A-1 Plant Compendium A-2 Wildlife Compendium B CNDDB Forms

R:\Projects\CWE_CAWaterEng\3CWE000400\HA\Pala Park HA-082415.docx i Habitat Assessment

SECTION 1.0

COUNTY OF RIVERSIDE ATTACHMENTS

Attachment E-3 BIOLOGICAL REPORT SUMMARY SHEET

(Submit two copies to the County) Applicant Name: ______City of Temecula Assessor’s Parcel Number (APN): ______961-450-001, 961-450-064, 961-450-016, and 961-450-017 APN cont. : ______Site Location: Section: ______19 and 20 Township: ______8S Range: ______2W Site Address: 44900______Temecula Lane, Temecula, CA 92592 Related Case Number(s): ______PDB Number:______

CHECK SPECIES or ENVIRONMENTAL (Circle Yes, No or N/A regarding SPECIES ISSUE OF CONCERN species findings on the referenced SURVEYED site) FOR

Arroyo Southwestern Toad Yes No N/A

✔ Blueline Stream(s) Yes No N/A

Coachella Valley Fringed-Toed Yes No N/A Lizard

Coastal California Gnatcatcher Yes No N/A

✔ Coastal Sage Scrub Yes No N/A

Delhi Sands Flower-Loving Fly Yes No N/A

Desert Pupfish Yes No N/A

Desert Slender Salamander Yes No N/A

Desert Tortoise Yes No N/A

Flat-Tailed Horned Lizard Yes No N/A

See Note 1 Least Bell’s Vireo Yes No N/A

Oak Woodlands Yes No N/A

Quino Checkerspot Butterfly Yes No N/A

Riverside Fairy Shrimp Yes No N/A

Santa Ana River Woolystar Yes No N/A

San Bernardino Kangaroo Rat Yes No N/A

Slender Horned Spineflower Yes No N/A

See Note 2 Stephen’s Kangaroo Rat Yes No N/A*

✔ Vernal Pools Yes No N/A

✔ Wetlands Yes No N/A**

E-3.1

Attachment E-4

LEVEL OF SIGNIFICANCE CHECKLIST For Biological Resources (Submit Two Copies) 961-450-001, 961-450-064, 961-450-016, and 961-450-017 Case Number: ______Lot/Parcel No. ______EA Number______

Wildlife & Vegetation Potentially | Less than Significant | Less than | No Significant | with Mitigation | Significant | Impact Impact | Incorporated | Impact |

(Check the level of impact the applies to the following questions)

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 regulations, or by the California Department of Fish and Game or U. S. 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?  ✔ 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 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 pool, coastal, etc.) through direct removal, filling, hydrological interruption, or other means?  ✔ g) Conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance? ✔ Source: CGP Fig. VI.36-VI.40

Findings of Fact: The project site would impact MSHCP Criteria Cells #7445 and #7446, which would contribute toward conservation of Proposed Constrained Linkage 14 (Temecula and Pechanga Creeks). The project impact area will consist of impacts associated with the six exploratory borings activities. These activities are expected to disturb existing native soils and minimal vegetation. No grading will occur with the proposed project and no riparian vegetation is expected to be impacted.

Proposed Mitigation: No mitigation will be required for this project since no grading will occur within the proposed project and no riparian vegetation is expected to be impacted.

Monitoring Recommended: Construction will not occur during the breeding season for nesting birds and/or raptors, therefore no pre-construction surveys will be required.

E-4.1 Temporary Impact Area Vegetation Types and Other Areas Survey Area Mulefat Scrub

Boring Locations Southern Cottonwood-Willow Riparian Forest

Special Status Plant Locations Fresh Water Marsh Paniculate tarplant Flood Plain Scrub

Chaparral sand-verbena Open Wash

Paniculate tarplant Ruderal Chaparral sand-verbena Ornamental Temecula Creek Jurisdictional Delineation Boundaries Disturbed USACE Jurisdiction Developed

CDFW Jurisdiction 5

3 6 2 4 7 10 8 11 1 9 1 12 13 14

5 15 3 1 6 4 2

P a l a P a r k

Bellflower Lane

Strawberry Tree Lane Honey Locust Drive

ive Holly Oak Drive Canterfield Dr ve T Dri e ve m Mangro e c u la Athel Way L a n e

Sunflower Way Aerial Source: Google, Jan 2013 D:\Projects\CWE\0004\MXDs\Bio\Habitat_Assessment\ex_BioResources_Attachment.mxd

Biological Resources Attachment E-5 Pala Park Bank Stabilization Project: Geotechnical Exploration

120 60 0 120 Feet ² (Rev: 08-24-2015 JAZ) R:\Projects\CWE_CAWaterEng\3CWE000400\Graphics\Bio\Habitat_Assessment\AttE5_BioResources.pdf View of ruderal habitat from the east side of the survey area (looking west). Ornamental habitat can be seen along the left side of the photograph.

View of Temecula Creek/open wash habitat looking east. Southern cottonwood-willow riparian forest habitat can be seen to the right of the open wash. D:\Projects\CWE\0004\Graphics\Habitat_Assessment\ex_SP1.ai Site Photographs Attachment E-6 Pala Park Bank Stabilization Project: Geotechnical Exploration

(08/19/2015 JAZ) R:\Projects\CWE_CAWaterEng\3CWE000400\Graphics\Bio\Habitat_Assessment\AttE6_SP.pdf View of beaver pond/freshwater marsh habitat from the west end of the pond, looking east. Beaver dam can be seen in the foreground.

View of flood plain scrub habitat looking east. Mulefat scrub can be seen on the right of the photograph. D:\Projects\CWE\0004\Graphics\Habitat_Assessment\ex_SP2.ai Site Photographs Attachment E-6 Pala Park Bank Stabilization Project: Geotechnical Exploration

(08/19/2015 JAZ) R:\Projects\CWE_CAWaterEng\3CWE000400\Graphics\Bio\Habitat_Assessment\AttE6_SP.pdf Chaparral sand-verbena pictured, facing south from the flood plain scrub in the central portion of the survey area. Ruderal vegetation and ornamental vegetation can be seen in the background.

Paniculate tarplant pictured, facing east from the eastern portion of the survey area. Mulefat scrub can be seen in the background. D:\Projects\CWE\0004\Graphics\Habitat_Assessment\ex_SP3.ai Site Photographs Attachment E-6 Pala Park Bank Stabilization Project: Geotechnical Exploration

(08/19/2015 JAZ) R:\Projects\CWE_CAWaterEng\3CWE000400\Graphics\Bio\Habitat_Assessment\AttE6_SP.pdf

SECTION 2.0

HABITAT ASSESSMENT

Pala Park Bank Stabilization Project: Geotechnical Exploration

This report presents the findings of a habitat assessment for the first phase of the Pala Park Bank Stabilization Project: Geotechnical Exploration (hereinafter referred to as the “proposed project”) located in the City of Temecula in Riverside County, California. The purpose of the proposed project is to stabilize the south bank in a section of Temecula Creek. The erosion of the bed and bank is damaging and encroaching on the existing Pala Community Park. The south bank of Temecula Creek adjacent to Pala Community Park requires stabilization in order to protect park facilities. The proposed project will involve geotechnical exploration to assist in the design of the stabilization project. The proposed project will be the first phase of a larger project. The larger project for this area consists of protecting the bank using riprap spurs and bioengineering for bank stabilization.

The Western Riverside County Multiple Species Habitat Conservation Plan (MSHCP) requires that project sites be evaluated for a number of factors to assess how they meet MSHCP criteria. This information is used to determine whether a project site should be acquired as part of the habitat reserve or whether it should be allowed for development. The biological resources evaluation also assists the Lead Agency in determining whether additional mitigation would be required for Criteria Area or Additional Survey Needs Species. According to the Riverside County Integrated Project (RCIP) Conservation Summary Report Generator, the proposed project is located within designated MSHCP “Criteria Area” Cells 7445 and 7446 (Proposed Constrained Linkage 14 along Temecula Creek). The general habitat assessment for the proposed project includes assessments for riparian/riverine areas and associated species, vernal pools and associated species, urban/wildlands interface issues, and areas under the jurisdictions of the U.S. Army Corps of Engineers (USACE) and/or the California Department of Fish and Wildlife (CDFW). According to the RCIP Conservation Summary Report Generator, a habitat assessment is required for burrowing owl (Athene cunicularia); a habitat assessment is not required for Criteria Area or Narrow Endemic plant species, amphibian species, or mammalian species. This report has been prepared in accordance with the MSHCP guidelines.

GENERAL SITE INFORMATION

The proposed project is located north of Pala Community Park, northeast of the Canterfield Drive and Temecula Lane intersection in the City of Temecula in Riverside County, California (Exhibit 1). It is located on the U.S. Geological Survey’s (USGS’) Pechanga and Temecula 7.5-minute quadrangles, within Township 8 South, Range 2 West, Sections 19 and 20 (Exhibit 2).

The proposed project would involve geotechnical exploration to assist in the design of the stabilization project. The proposed project includes drilling six exploratory borings using a truck- mounted hollow-stem auger drill rig to evaluate the existing soil and rock, if encountered, and to collect samples for laboratory testing. The exploratory borings will be drilled to depths of approximately 20 feet or refusal, whichever occurs first to evaluate the existing soil and rock. The survey area for the proposed project consists of the 1.56-acre temporary impact area and a 10.20-acre potential mitigation area. The temporary impact area will consist of impacts associated with the six exploratory borings activities. These activities are expected to disturb existing native soils and minimal vegetation. No grading will occur with the proposed project and no riparian vegetation is expected to be impacted. The potential mitigation area will be the area considered for mitigation for the larger project. Residential development is located along both sides of the survey area. Topography in the survey area is relatively flat with an elevation of approximately 1,040 feet above mean sea level (msl). Soils in the survey area are composed of Grangeville sandy loam, Grangeville fine sandy loam, Hanford coarse sandy loam, Riverwash, and Tujunga loamy sand (Exhibit 3).

The survey area is located in Subunit 2 (Temecula and Pechanga Creeks) of the Western Riverside MSHCP’s Southwest Area Plan. Temecula Creek is currently an open sandy wash and

R:\Projects\CWE_CAWaterEng\3CWE000400\HA\Pala Park HA-082415.docx 1 Habitat Assessment Ra nch o Vi sta Rd Canyon Lake Canyon Lake Diamond Valley Lake Lake Elsinore Pauba Rd Margarita Rd Lake Elsinore

Lake Skinner

Margarita Rd Sant a i go Rd Temecula li Project Location Riverside San Diego

De Portola Rd

d R Ynez Rd h it Sm ah di de Je 79 De Portola Rd UV

Redhawk Pkwy UV79

15 ¨¦§ Canterfield Dr T em e cu l Loma Linda Rd a

L n

Wolf Creek Dr Pechanga Pkwy Clubhouse Dr

Rainbow Canyon Rd

Wolf Valley Rd

¨¦§15

Survey Area

D:\Projects\CWE\0004\MXDs\Bio\Habitat_Assessment\ex_ProjectLocation.mxd Aerial Source: Aerials Express 2009

Project Location Exhibit 1 Pala Park Bank Stabilization Project: Geotechnical Exploration

2,000 1,000 0 2,000 Feet ² (Rev: 08-11-2015 JAZ) R:\Projects\CWE_CAWaterEng\3CWE000400\Graphics\Bio\Habitat_Assessment\ex1_ProjectLocation.pdf TEMECULA QUADRANGLE

PECHANGA QUADRANGLE

Source: USGS 7.5 Minute Quadrangle Pechanga Temecula Survey Area Township: 08S Range: 02W

D:\Projects\CWE\0004\MXDs\Bio\Habitat_Assessment\ex_USGS.mxd D:\Projects\CWE\0004\MXDs\Bio\Habitat_Assessment\ex_USGS.mxd Sections: 19 & 20

USGS 7.5-Minute Topographic Quadrangle Exhibit 2 Pala Park Bank Stabilization Project: Geotechnical Exploration

2,000 1,000 0 2,000 Feet ² (Rev: 08-11-2015 JAZ) R:\Projects\CWE_CAWaterEng\3CWE000400\Graphics\Bio\Habitat_Assessment\ex2_USGS.pdf Temporary Impact Area

Survey Area

Boring Locations

Soil Types GpB - Grangeville sandy loam, drained, saline-alkali, 0 to 5 percent slopes

GtA - Grangeville fine sandy loam, drained, 0 to 2 percent sl opes

GuB - Grangeville fine sandy loam, poorly drained, saline-alk ali, 0 to 5 percent slopes GvB - Grangeville fine sandy loam, saline-alkali, 0 to 5 perc ent slopes Temecula Creek HcA - Hanford coarse sandy loam, 0 to 2 percent slopes

RsC - Riverwash

TvC - Tujunga loamy sand, channeled, 0 to 8 percent slopes GuB

RsC

GpB 5 TvC 3 1 6 4 GvB 2

GvB HcA

GtA

P a l a P a r k

Bellflower Lane

Strawberry Tree Lane Honey Locust Drive

ive Holly Oak Drive Canterfield Dr ve Dri ve Mangro

Athel Way

T e m e c u la L a n e Sunflower Way Aerial Source: Google, Jan 2013 D:\Projects\CWE\0004\MXDs\Bio\Habitat_Assessment\ex_Soils.mxd

Soil Types Exhibit 3 Pala Park Bank Stabilization Project: Geotechnical Exploration

120 60 0 120 Feet ² (Rev: 08-19-2015 JAZ) R:\Projects\CWE_CAWaterEng\3CWE000400\Graphics\Bio\Habitat_Assessment\ex3_Soils.pdf Pala Park Bank Stabilization Project: Geotechnical Exploration becomes a flowing river during flashfloods. The survey area is located in Criteria Area Cells 7445 and 7446 and in Proposed Constrained Linkage 14 along Temecula Creek (Exhibit 4). The area of land in the survey area is owned by the City of Temecula and the Temecula Lane Homeowners Association; the northern portion of the survey area has been designated as Public/Quasi-Public Lands by the MSHCP (Dudek 2003). Public/Quasi-Public Lands are lands within public or private ownership that are expected to be managed for open space value and/or in a manner that contributes to the conservation of Covered Species.

METHODS

Vegetation Mapping and General Surveys

A literature review was conducted prior to the field survey to identify special status plant and wildlife species known to occur in the project vicinity. The California Native Plant Society’s (CNPS’) Locational Inventory of Rare and Endangered Vascular Plants of California (CNPS 2015a) and the CDFW’s California Natural Diversity Database (CNDDB) (CDFW 2015) were reviewed and included the USGS Bachelor Mountain, Murrieta, Pechanga, and Temecula 7.5-minute quadrangles. The RCIP Summary Report Generator was run to determine MSHCP requirements using Assessor Parcel Numbers (APNs) 961-450-001, 961-145-064, 961-450-016, and 961-450-017. In addition, the Report and General Soil Maps for the Western Riverside Area was reviewed to determine whether suitable soils are present to support special status plant and wildlife species (USDA NRCS 2015).

The habitat assessment was conducted on May 21, 2015, by BonTerra Psomas Senior Biologist Jennifer Pareti and Biologist Tanessa Hartwig. The weather was overcast with a temperature of 60 degrees Fahrenheit and winds of 1–2 miles per hour. The habitat assessment was conducted by walking the survey area and recording plant and wildlife species observed. Vegetation was mapped in the field on an aerial photograph at a scale of 1 inch equals 120 feet (1″=120′). Vegetation types were mapped and generally follows categories outlined in the Western Riverside County MSHCP Habitat Accounts (Dudek 2003) and A Manual of California Vegetation (Sawyer et al. 2009). Photographs were also taken during the habitat assessment (see Attachment E-6).

All plant and wildlife species observed were recorded in field notes. Plant species were identified in the field or collected for later identification. Plants were identified using taxonomic keys in the Baldwin et al. (2012), Hickman (1993), and Munz (1974). Taxonomy follows Baldwin et al. (2012) for scientific and common names or current taxonomy in literature (i.e., scientific journals). A list of plant species observed during the survey is included in Table A-1 of Appendix A.

All wildlife species detected during the course of the surveys were documented in field notes. Active searches for reptiles and amphibians included lifting, overturning, and carefully replacing rocks and debris. Birds were identified by using visual and auditory recognition. Surveys for mammals were conducted during the day and included searching for and identifying diagnostic sign, including scat, footprints, scratch-outs, dust bowls, burrows, and trails. Taxonomy and nomenclature for wildlife generally follows Center for North American Herpetology (2015) for amphibians and reptiles, American Ornithologists’ Union (2013) for birds, and Wilson and Reeder (2005) for mammals. A list of wildlife species observed during the survey is included in Table A-2 of Appendix A.

Special Status Plant Surveys

The MSHCP was reviewed to determine whether the survey area is within an “Additional Survey Needs Area” that indicates potential for specific Criteria Area or Narrow Endemic plant species. According to the RCIP Conservation Summary Report Generator, surveys were not required in

R:\Projects\CWE_CAWaterEng\3CWE000400\HA\Pala Park HA-082415.docx 2 Habitat Assessment Pauba Rd

Margarita Rd Sant a i go Rd

d R Ynez Rd h it m h S dia de Je 79 De Portola Rd UV

Redhawk Pkwy 7356 7357 7358 7359 UV79

Canterfield Dr 7446 T 7444 7445 em e cu l Loma Linda Rd a

L n

Wolf Creek Dr Pechanga Pkwy Clubhouse Dr 7520 Rainbow Canyon Rd 7530

Wolf Valley Rd

¨¦§15

7592 7612

Survey Area

MSHCP Areas 7693 Criteria Cells

Aerial Source: Aerials Express 2009 D:\Projects\CWE\0004\MXDs\Bio\Habitat_Assessment\ex_MSHCP.mxd Western Riverside County Multiple Species Habitat Conservation Plan Exhibit 4 Pala Park Bank Stabilization Project: Geotechnical Exploration

2,000 1,000 0 2,000 Feet ² (Rev: 08-19-2015 JAZ) R:\Projects\CWE_CAWaterEng\3CWE000400\Graphics\Bio\Habitat_Assessment\ex4_MSHCP.pdf Pala Park Bank Stabilization Project: Geotechnical Exploration the survey area for these plant species. Therefore, the 2015 special status plant surveys were conducted for species not covered by the MSHCP.

Botanical surveys were floristic in nature and consistent with the current CDFW protocols (CDFG 2009). Prior to the field survey, a literature search was conducted to identify special status plant species known to occur in the vicinity of the survey area. Sources reviewed include the Bachelor Mountain, Murrieta, Pechanga, and Temecula 7.5-minute quadrangles in the CNPS’ Locational Inventory of Rare and Endangered Vascular Plants of California (CNPS 2015a) and the CDFW’s CNDDB (CDFW 2015).

Rainfall received in the winter and spring determines the germination of many annual and perennial herb species. The Elsinore station (042805) is located approximately 20 miles northwest of the survey area. The average annual precipitation is 12.01 inches, with an average of 7.02 inches received in the winter; 3.01 inches received in the spring; 0.22 inch received in the summer; and 1.77 inches received in the fall (WRCC 2015; includes data from 1897 to 2015). Precipitation from July 2014 to June 2015 is 7.4 inches, which is 62 percent of average annual rainfall. (WRCC 2015).

A focused survey for special status plants was conducted on June 22, 2015, by Ms. Pareti for a total number of two and a half person-hours spent. A systematic survey was conducted in all areas of suitable special status plant habitat in the survey area. All plant species observed were recorded in field notes. Plant species were identified in the field or collected for later identification. Plants were identified to the taxonomic level necessary to determine whether or not they are a special status species. Plants were identified using taxonomic keys, descriptions, and illustrations in Baldwin et al. (2012), Hickman (1993), Munz (1974), Abrams (1923, 1944, 1951), and Abrams and Ferris (1960). Taxonomy and nomenclature follows Baldwin et al. (2012) and current scientific journals for scientific and common names.

A Global Positioning System (GPS) unit was used to map locations of special status plant species observed in the survey area. For each special status species population observed, data was collected on the number and phenology of individuals and microsite characteristics such as slope, aspect, soil texture, surrounding habitat, and associated species. The results of the survey is included in this report. Photographs of the survey area and any observed special status plant species are included in Table A-1 of Appendix A. Any voucher specimens collected will be deposited with the Rancho Santa Ana Herbarium.

Burrowing Owl Surveys

A habitat assessment for the burrowing owl was conducted by Ms. Pareti and Ms. Hartwig on May 21, 2015. Ms. Pareti and Ms. Hartwig conducted the assessment by walking the survey area and assessing its potential for burrowing owls.

A focused burrowing owl burrow survey was conducted on May 27, 2015, by BonTerra Psomas Biologist Cristhian Mace. Surveys followed the survey instructions in the Western Riverside County MSHCP (County of Riverside 2006), with additional technical support from the CDFW’s Staff Report on Burrowing Owl Mitigation (CDFG 2012). Ms. Mace walked through all suitable habitats in the survey area using transects spaced no more than 65 feet apart in order to ensure 100 percent visual coverage of the ground surface. If owls or potentially occupied burrows or cavities are located during the burrow surveys, then focused crepuscular (dawn or dusk) burrowing owl surveys are required. Any natural or man-made cavities large enough to allow a burrowing owl to enter were inspected for evidence of occupation. Evidence of occupation may include prey remains, cast pellets, white-wash, feathers, and observations of owls adjacent to

R:\Projects\CWE_CAWaterEng\3CWE000400\HA\Pala Park HA-082415.docx 3 Habitat Assessment Pala Park Bank Stabilization Project: Geotechnical Exploration burrows. The burrow survey was conducted at least five days after rain, which could have washed away potential sign. The results of the survey is included in this report.

Jurisdictional Delineation

A jurisdictional delineation was conducted concurrently with vegetation mapping and general surveys in order to describe the type and extent of waters regulated by the USACE, the Regional Water Quality Control Board (RWQCB), and the CDFW. Non-wetland “waters of the U.S.” under the jurisdiction of the USACE were delineated based on the limits of the Ordinary High Water Mark (OHWM), which can be determined by a number of factors including erosion, the deposition of vegetation or debris, and changes in vegetation. The presence of wetland “waters of the U.S.” were assessed using the three-parameter approach for wetland hydrology, hydrophytic vegetation, and hydric soils, as described in the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Arid West Region. It should be noted that the RWQCB shares USACE jurisdiction unless isolated conditions are present. If isolated waters conditions are present, the RWQCB takes jurisdiction using the USACE’s definition of the OHWM and/or the three parameter wetlands methods. The CDFW’s jurisdiction is defined as the top of the bank to the top of the bank of the stream, channel, or basin or to the outer limit of riparian vegetation located within or immediately adjacent to the river, stream, creek, pond, or lake or other impoundment.

Prior to conducting the jurisdictional delineation, BonTerra Psomas referred to the following documents to identify areas that may fall under agency jurisdiction: USGS Pechanga and Temecula 7.5-minute topographic quadrangles; color aerial photography provided by Google Earth; the Web Soil Survey for the Western Riverside Area, California (USDA NRCS 2015); and the National Hydric Soils List (USDA NRCS 2014). During the field survey, jurisdictional areas were recorded on a 1 inch = 120 feet scale aerial photograph. Jurisdictional water resources were either delineated as the limits of the OHWM within the temporary impact area or, for riparian vegetation canopy clearly visible on aerial imagery, as a polygon. The field survey included the collection of vegetation, soils, and hydrologic data from one sampling point in the temporary impact area; this information was recorded on Wetland Determination Data Forms. The results of the survey is included in this report.

EXISTING CONDITIONS

Vegetation Types and Other Areas

The following vegetation types and other areas occur in the survey area: mulefat scrub, southern cottonwood–willow riparian forest, freshwater marsh, flood plain scrub, open wash, ruderal, ornamental, disturbed, and developed areas (Exhibit 5).

Mulefat Scrub

Mulefat scrub is described as a subassociation of the Riparian Forest/Woodland/Scrub vegetation association of the MSHCP habitat accounts (Dudek 2003). Mulefat scrub is present east of Pala Park in the dry sandy wash areas and the upper bank of Temecula Creek. Mulefat scrub is dominated by mule fat (Baccharis salicifolia) along the upper bank of Temecula Creek, east of Pala Park, with some California buckwheat (Eriogonum fasciculatum), California croton (Croton californicus), and shortpod mustard (Hirschfeldia incana). Within Temecula Creek, mulefat scrub varies in density, with some areas in the eastern most portion of the survey area consisting of an open canopy of mule fat with young arroyo willows (Salix lasiolepis) and sandbar willow (Salix exigua).

R:\Projects\CWE_CAWaterEng\3CWE000400\HA\Pala Park HA-082415.docx 4 Habitat Assessment Temporary Impact Area Vegetation Types and Other Areas Survey Area Mulefat Scrub

Boring Locations Southern Cottonwood-Willow Riparian Forest

Special Status Plant Locations Fresh Water Marsh Paniculate tarplant Flood Plain Scrub

Chaparral sand-verbena Open Wash

Paniculate tarplant Ruderal Chaparral sand-verbena Ornamental Temecula Creek Jurisdictional Delineation Boundaries Disturbed USACE Jurisdiction Developed

CDFW Jurisdiction 5

3 6 2 4 7 10 8 11 1 9 1 12 13 14

5 15 3 1 6 4 2

P a l a P a r k

Bellflower Lane

Strawberry Tree Lane Honey Locust Drive

ive Holly Oak Drive Canterfield Dr ve T Dri e ve m Mangro e c u la Athel Way L a n e

Sunflower Way Aerial Source: Google, Jan 2013 D:\Projects\CWE\0004\MXDs\Bio\Habitat_Assessment\ex_BioResources.mxd

Biological Resources Exhibit 5 Pala Park Bank Stabilization Project: Geotechnical Exploration

120 60 0 120 Feet ² (Rev: 08-24-2015 JAZ) R:\Projects\CWE_CAWaterEng\3CWE000400\Graphics\Bio\Habitat_Assessment\ex5_BioResources.pdf Pala Park Bank Stabilization Project: Geotechnical Exploration

Southern Cottonwood–Willow Riparian Forest

Southern cottonwood–willow riparian forest is described as a subassociation of the Riparian Forest/Woodland/Scrub vegetation association of the MSHCP habitat accounts (Dudek 2003). Southern cottonwood–willow riparian forest occurs along the bank of Temecula Creek adjacent to Pala Park. This vegetation type is dominated by Fremont cottonwood (Populus fremontii ssp. fremontii), Goodding’s black willow (Salix gooddingii), arroyo willow, and mule fat. Additional species observed in moderate abundance include western sycamore (Platanus racemosa) and tamarisk (Tamarix ramosissima). The understory is composed of California rose (Rosa californica), mugwort (Artemisia douglasiana), and Indian tobacco (Nicotiana quadrivalvis).

Freshwater Marsh

Coastal and valley freshwater marsh is described as a subassociation of the Freshwater Wetlands vegetation association of the MSHCP habitat accounts (Dudek 2003). Freshwater marsh occurs in the eastern edge of the survey area. Freshwater marsh consists of ponded water in Temecula Creek created by an earthen dam dominated by cattails (Typha sp.), with bulrush (Schoenoplectus sp. [Scirpus sp.]), mule fat, and sandbar willow.

Flood Plain Scrub

Flood plain scrub describes an herbaceous layer in the Temecula Creek riverbed that is not described in the MSHCP habitat accounts or in A Manual of California Vegetation (Dudek 2003; Sawyer et al. 2009). Flood plain scrub occurs along the northern portion of the survey area in the sandy bench of Temecula Creek’s active floodplain. Less disturbance of the wash occurs here allowing the absolute vegetative cover in this area to grow to approximately 30 percent. Flood plain scrub is made up of sparse scrub and herb species dominated by California croton, telegraph weed (Heterotheca grandiflora), and chaparral sand-verbena (Abronia villosa var. aurita). Scattered mule fat and sandbar willow occur with Mediterranean schismus (Schismus barbatus), redstem filaree (Erodium cicutarium), and Pomona milkvetch (Astragalus pomonensis).

Open Wash

Open wash describes an unvegetated area in the Temecula Creek riverbed that is not described in the MSHCP habitat accounts or in A Manual of California Vegetation (Dudek 2003; Sawyer et al. 2009). Open wash describes the sandy, dry portions of Temecula Creek were vegetation is not present.

Ruderal

Ruderal vegetation follows the non-native grassland subassociation of the Grasslands vegetation association of the MSHCP habitat accounts (Dudek 2003). Ruderal vegetation occurs in the southeastern portion of the survey area and is composed of non-native herbaceous species and is dominated by shortpod mustard, with Russian thistle (Salsola tragus), Mediterranean schismus, cryptantha (Cryptantha sp.), redstem filaree, and red brome (Bromus madritensis ssp. rubens) with scattered coastal goldenbush (Isocoma menziesii).

Ornamental

Ornamental vegetation follows the Residential/Urban/Exotic vegetation association of the MSHCP habitat accounts for developed areas (Dudek 2003). Ornamental vegetation occurs along the southern portion of the survey area. Ornamental describes the turf grass that makes up Pala Park, as well as native planted vegetation adjacent to the Pala Park parking lot in the southwest of the survey area. This native planted area consists of western sycamore trees, coyote brush

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(Baccharis pilularis ssp. consanguinea), and rock rose (Cistus purpureus). Adjacent to the eastern portion of Pala Park is a row of ash trees (Fraxinus sp.). Additional native plantings occur along the residences to the east of Pala Park and consist of planted western sycamore trees, Fremont cottonwood trees, coyote brush, lemonade berry (Rhus integrifolia), California buckwheat, and pampas grass (Cortaderia selloana). A small drainage of residential runoff occurs in this area and vegetation present included willow herb (Epilobium ciliatum), yerba mansa (Anemopsis californica), alkali heliotrope (Heliotropium curassavicum var. oculatum), western ragweed (Ambrosia psilostachya), with a few scattered tamarisk and a small amount of emergent cattails.

Disturbed

Disturbed areas follow the Residential/Urban/Exotic vegetation association of the MSHCP habitat accounts for developed areas (Dudek 2003). Disturbed area occurs adjacent to Pala Park and Temecula Creek. This area consists of bare ground (no vegetation).

Developed

Developed areas follow the Residential/Urban/Exotic vegetation association of the MSHCP habitat accounts for developed areas (Dudek 2003). Developed areas in the survey area consist of concrete pedestrian trails. This area has no vegetation.

Wildlife

Although the survey area is located in an urban setting, the riparian habitat in Temecula Creek is generally considered of high biological value.

There was no flowing water in Temecula Creek at the time of the survey. A large beaver pond was located in the eastern portion of the survey area. American bullfrog (Lithobates catesbeianus) was the only amphibian species observed during the habitat assessment. Other amphibian species expected to occur in the survey area include the California toad (Anaxyrus boreas halophilus) and Baja California treefrog (Pseudacris hypochondriaca).

No reptile species were observed during the survey. Reptile species expected to occur in the survey area include the western fence lizard (Sceloporus occidentalis), western side-blotched lizard (Uta stansburiana elegans), gopher snake (Pituophis catenifer), and southern Pacific rattlesnake (Crotalus oreganus helleri).

Bird species observed in or adjacent to the survey area include mallard (Anas platyrhynchos), snowy egret (Egretta thula), common moorhen (Gallinula chloropus), American coot (Fulica americana), mourning dove (Zenaida macroura), Anna’s hummingbird (Calypte anna), American kestrel (Falco sparverius), Say’s phoebe (Sayornis saya), American crow (Corvus brachyrhynchos), northern mockingbird (Mimus polyglottos), common yellowthroat (Geothlypis trichas), spotted towhee (Pipilo maculatus), California towhee (Pipilo crissalis), red-winged blackbird (Agelaius phoeniceus), house finch (Haemorhous mexicanus), and lesser goldfinch (Spinus psaltria). Other bird species expected to occur in the survey area include great blue heron (Ardea herodias), great egret (Ardea alba), black phoebe (Sayomis nigricans), house wren (Troglodytes aedon), song sparrow (Melospiza melodia), and hooded oriole (Icterus cucullatus).

The only mammal species observed during the survey were desert cottontail (Sylvilagus audubonii) and beaver (Castor canadensis; sign only). Other mammal species expected to occur in the survey area include the Virginia opossum (Didelphis virginiana), black-tailed jackrabbit (Lepus californicus), California ground squirrel (Otospermophilus beecheyi), and coyote (Canis latrans).

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Wildlife Movement

Wildlife movement 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 the larger and more mobile mammals, will not likely persist over time in fragmented or isolated habitat areas because they prohibit the infusion of new individuals and genetic information. Corridors mitigate the effects of this fragmentation by (1) allowing animals to move between remaining habitats, thereby permitting depleted populations to be replenished and promoting genetic exchange; (2) providing escape routes from fire, predators, and human disturbances, thus reducing the risk that catastrophic events, such as fire or disease, will result in population or local species extinction; and (3) serving as travel routes for individual animals as they move in their home ranges in search of food, water, mates, and other necessary resources.

The survey area is located in a predominantly urban setting with open space located to the east and north. Temecula Creek, located in the northern portion of the survey area, provides a wildlife movement corridor through the developed areas surrounding the project site. The MSHCP has designated Temecula Creek as Proposed Constrained Linkage 14. This Constrained Linkage connects Existing Core G (Santa Margarita Ecological Reserve) and Proposed Linkage 10 in the west to Existing Linkage A in the south.1 The linkage provides a connection between the Santa Ana Mountains and the Palomar Mountains using both Temecula and Pechanga Creeks, as well as other non-drainage crossings under Interstate (I) 15. Temecula Creek also provides a Linkage from the Agua Tibia Mountains to the Temecula Creek/Santa Margarita River/Murrieta Creek confluence.

The MSHCP states that Proposed Constrained Linkage 14 (Temecula and Pechanga Creeks) may serve as one component of a larger movement corridor for mountain lions (Puma concolor) traveling between the Santa Ana Mountains and the Palomar Mountains. Maintenance of contiguous habitat with appropriate areas for resting (e.g., rockpiles, brushpiles, windfalls, hollow snags, and hollow trees) is important for dispersal of juveniles. It also states that existing floodplain processes and water quality along Temecula Creek must be maintained in order to support wetland species potentially occurring in vicinity including California red-legged frog (Rana draytonii), arroyo chub (Gila orcutti), and western pond turtle (Actinemys marmorata).

The proposed project will impact existing native soils and minimal vegetation. No grading will occur with the project and no riparian vegetation is expected to be impacted. Soil disturbance/removal for these activities is expected to be less than one cubic yard. Therefore, following proposed project boring activities, wildlife would be expected to continue to utilize the creek for local and regional movement.

In addition, the proposed project is expected to take one to two days and occur during daylight hours; therefore, it would not be expected to deter nocturnal wildlife movement. Most wildlife moving along the creek during the day would be expected to be fairly acclimated to noise given the urban setting, and birds could move through the construction area quickly to reach quieter

1 A “Constrained Linkage” is a constricted connection that is expected to provide for movement of identified Planning Species between Core Areas, where options for assembly of the connection are limited due to existing patterns of use. A “Core” is a block of habitat of appropriate size, configuration, and vegetation characteristics to generally support the lift history requirements of one or more Covered Species. A “Linkage” is a connection between Core Areas that generally provides for gene flow (and thus functions as a movement corridor) and live-in habitat for one or more species.

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SPECIAL STATUS RESOURCES

Special status resources include plant and wildlife species and vegetation types. These species have generally been afforded this recognition by federal and State resource agencies and by private conservation organizations (e.g., the CNPS). In general, the principal reason an individual taxon (e.g., species, subspecies, or variety) is given such recognition is a documented or perceived decline or limitation of its population size, geographic range, and/or distribution that results, in most cases, from habitat loss.

The Riverside County Board of Supervisors approved the MSHCP in 2003 and received permitting approval from the U.S. Fish and Wildlife Service (USFWS) in June 2004. This plan establishes Criteria Areas (i.e., reserves) to adequately conserve many species listed as Threatened and Endangered by the USFWS and the CDFW. Impacts on Covered Species would be considered fully mitigated with the City’s participation in the MSHCP program. With the exception of a few species (e.g., burrowing owl, which is an Additional Survey Needs species and least Bell’s vireo [Vireo bellii pusillus], which is a Riparian/Riverine species), focused surveys are not required for Covered Species and no additional permitting would be necessary.

Riparian/Riverine Resources

As defined by the MSHCP, Riparian/Riverine areas are lands that contain habitat dominated by trees, shrubs, persistent emergents, or emergent mosses and lichens, which occur close to or depend upon soil moisture from a nearby fresh water source or areas with fresh water flow during all or a portion of the year (Dudek 2003). Temecula Creek meets the definition of Riparian/Riverine. The proposed project will impact existing native soils, but minimal vegetation. No grading will occur with the project and no riparian vegetation is expected to be impacted. Soil disturbance/removal for these activities is expected to be less than one cubic yard. The MSHCP recommends avoidance of Riparian/Riverine areas, if feasible. Since avoidance is feasible based on the nature of the proposed project, an analysis supporting a Determination of Biologically Equivalent or Superior Preservation (DBESP) would not be required.

The temporary impact area consists of riparian habitat; however, the habitat is very open, not extensive enough, and lacks the complex understory to provide suitable habitat for the least Bell’s vireo. In addition, the western yellow-billed cuckoo (Coccyzus americanus) and southwestern willow flycatcher (Empidonax traillii extimus) are not expected to occur in the impact area due to the lack of suitable riparian forest habitat. Therefore, focused surveys for these species are not recommended. In addition, the proposed project would not impact habitat for these species, and boring activities will be conducted during the non-nesting season (September 16 to March 14).

The MSHCP states that key populations of yellow warbler (Setophaga petechia) and yellow- breasted chat (Icteria virens) occur along Temecula Creek. The MSHCP also states that the western pond turtle occurs in Temecula Creek; however, no suitable habitat is present in the temporary impact area for this species. Suitable habitat is present in the mitigation area for the pond turtle. No surveys are required by the MSHCP for this species. The proposed project will be conducted during the non-nesting season; no grading will occur with the project; and no riparian vegetation is expected to be impacted. However, the Best Management Practices (BMPs) listed in the Recommendations Section shall be followed during implementation of the proposed project.

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“Waters of the U.S.”/“Waters of the State”

Drainages, which may include “waters of the U.S.” and “waters of the State”, are regulated pursuant to Section 404 of the Clean Water Act (CWA) and Section 1602 of the California Fish and Game Code and are under the jurisdiction of the USACE and the CDFW, respectively. “Waters of the U.S.” include navigable coastal and inland waters, lakes, rivers, and streams and their tributaries; interstate waters and their tributaries; wetlands adjacent to such waters; intermittent streams; and other waters that could affect interstate commerce. Section 401 of the CWA provides the RWQCB with the authority to regulate, through a Water Quality Certification, any proposed, federally permitted activity that may affect water quality.

Temecula Creek is considered under the jurisdiction of the USACE, the CDFW, and the RWQCB. Approximately 0.89 acre of non-wetland “waters of the U.S.” and approximately 0.36 acre under CDFW jurisdiction occur in the temporary impact area. A 1602 Streambed Alteration Agreement notification and notification under the RWQCB Nationwide Permit No. 6, Survey Activities has been submitted to the CDFW and RWQCB.

Vernal Pools

As defined by the MSHCP, vernal pools are seasonal wetlands that occur in sunken areas that have wetland soils, vegetation, and hydrology during the wetter portion of the growing season, but lack hydrology and/or vegetation during the drier portion of the year (Dudek 2003). Vernal pools or soils that may support seasonal ponding are not present in the temporary impact area. Therefore, suitable habitat for species associated with vernal pools (i.e., fairy shrimp) is not present and focused surveys would not be required.

Criteria Area, Narrow Endemic, and Other Special Status Plant Species

According to the RCIP Summary Report Generator, focused plant surveys are not required for Criteria Area or Narrow Endemic plant species. Table 1 identifies the special status plants not covered by the MSHCP that have potential to occur in the survey area and the results of the 2015 plant survey.

Chaparral sand-verbena was observed in the survey area. Additionally, paniculate tarplant (Deinandra paniculata) was incidentally observed in the survey area. These species are not covered by the MSHCP and are discussed below. No other special status plant species were observed in the survey area. A list of all plants observed in the survey area during focused survey can be found in Table A-1 of Appendix A.

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TABLE 1 SPECIAL STATUS PLANT SPECIES KNOWN TO OCCUR IN THE VICINITY OF THE SURVEY AREA

Status Potential to Occur in the Survey Area; Species USFWS CDFW CRPR Results of Focused Survey Observed in the survey area; Abronia villosa var. aurita — — 1B.1 locations occur outside the chaparral sand-verbena temporary impact area. Limited suitable habitat; not Brodiaea santarosae — — 1B.2 observed during 2015 focused plant Santa Rosa Basalt brodiaea surveys. Limited suitable habitat; not Chaenactis glabriuscula var. orcuttiana — — 1B.1 observed during 2015 focused plant Orcutt’s pincushion surveys. Clarkia delicata No suitable habitat; not expected to — — 1B.2 delicate clarkia occur. Cryptantha wigginsii No suitable habitat (soils); not — — 1B.2 Wiggins’ cryptantha expected to occur. Observed in the survey area; Deinandra paniculata — — 4.2 locations occur outside the paniculate tarplant temporary impact area. Limited suitable habitat; not Horkelia cuneata var. puberula — — 1B.1 observed during 2015 focused plant mesa horkelia surveys. Juncus luciensis No suitable habitat; not expected to — — 1B.2 Santa Lucia dwarf rush occur. Lepidium virginicum var. robinsonii No suitable habitat; not expected to — — 4.3 Robinson’s pepper-grass occur. Monardella hypoleuca ssp. intermedia No suitable habitat; not expected to — — 1B.3 intermediate monardella occur. Nolina cismontana No suitable habitat; not expected to — — 1B.2 chaparral nolina occur. Packera ganderi No suitable habitat; not expected to — SR 1B.2 Gander’s ragwort occur. Suitable habitat in survey area; limited suitable habitat in the Pseudognaphalium leucocephalum temporary impact area. Fall — — 2B.2 white rabbit-tobacco blooming plant, not observed during 2015 early summer focused plant surveys. Schizymenium shevockii No suitable habitat; not expected to — — 1B.2 Shevock’s copper moss occur. Scutellaria bolanderi ssp. austromontana No suitable habitat; not expected to — — 1B.2 southern mountains skullcap occur. Limited suitable habitat in the survey Symphyotrichum defoliatum area; no suitable habitat in the — — 1B.2 San Bernardino aster temporary impact area; not observed during 2015 focused plant surveys. Tetracoccus dioicus No suitable habitat; not expected to — — 1B.2 Parry’s tetracoccus occur.

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TABLE 1 SPECIAL STATUS PLANT SPECIES KNOWN TO OCCUR IN THE VICINITY OF THE SURVEY AREA

Status Potential to Occur in the Survey Area; Species USFWS CDFW CRPR Results of Focused Survey Texosporium sancti-jacobi No suitable habitat; not expected to — — 3 woven-spored lichen occur. Limited suitable habitat; not Tortula californica — — 1B.2 observed during 2015 focused plant California screw moss surveys. USFWS: U.S. Fish and Wildlife Services; CDFW: California Department of Fish and Game; CRPR: California Rare Plant Rank

State (CDFW) SR Rare

CRPR List 1B Plants Rare, Threatened, or Endangered in California and elsewhere List 2B Plants Rare, Threatened, or Endangered in California but more common elsewhere List 3 Plants about which we need more information – A Review List List 4 Plants of limited distribution – A Watch List

CRPR Threat Rank Extensions None Plants lacking any threat information .1 Seriously Endangered in California (over 80% of occurrences threatened; high degree and immediacy of threat) .2 Fairly Endangered in California (20–80% of occurrences threatened) .3 Not very threatened in California (<20% of occurrences threatened; low degree and immediacy of threat or no current threats known)

Chaparral Sand-Verbena

Chaparral sand-verbena has a California Rare Plant Rank (CRPR) of 1B.1. It typically blooms between March and August (Baldwin et al. 2012). This annual herb occurs in sandy places in coastal sage scrub or chaparral (Baldwin et al. 2012; Munz 1974). This species is known from the south coast subregion of the southwestern California region and western Sonoran Desert at elevations between sea level and 5,280 feet above msl (Baldwin et al. 2012).

A total of 476 individuals of chaparral sand-verbena were observed in mulefat scrub, flood plain scrub, and ruderal vegetation in the survey area (Table 2; Exhibit 5). The associated species occurring with the identified chaparral sand-verbena populations included (in order of dominance): California croton, shortpod mustard, red brome, western ragweed, slender woolly buckwheat (Eriogonum gracile), Mediterranean schismus, and scattered California buckwheat. These plants were observed on flat or gently sloping areas mapped as having Grangeville sandy loam and Grangeville fine sandy loam soils. A CNDDB form for the chaparral sand-verbena occurrence is included as Appendix B.

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TABLE 2 CHAPARRAL SAND-VERBENA POPULATIONS OBSERVED IN THE SURVEY AREA

Number of Percent Phenology Location Individuals Vegetative Flowering Fruiting 1 1 0 100 0 2 1 0 100 0 3 1 0 100 0 4 8 0 100 0 5 2 0 100 0 6 26 0 100 0 7 115 29 71 0 8 122 33 49 18 9 1 0 100 0 10 69 29 49 22 11 1 0 100 0 12 54 11 52 37 13 10 0 100 0 14 60 0 92 8 15 5 80 20 0 Total 476 N/A N/A N/A

Paniculate Tarplant

Paniculate tarplant has a CRPR of 4.2. It typically blooms between April and November. This annual herb occurs in vernally mesic or sometimes sandy soils in coastal scrub, valley and foothill grasslands, or vernal pools (CNPS 2015b). This species is known from California, western Arizona, and northern Baja California, Mexico at elevations between approximately 80 and 3,100 feet above msl (Baldwin et al. 2012; CNPS 2015b).

Approximately 2,000 individuals of paniculate tarplant were observed in ruderal vegetation in the survey area (Table 3; Exhibit 5). The associated species included (in order of dominance): tocalote (Centaurea melitensis), redstem filaree, shortpod mustard, and coastal goldenbush. These plants were observed on flat or gently sloping areas mapped as having Grangeville sandy loam soils. A CNDDB form for the paniculate tarplant occurrence is included as Appendix B.

TABLE 3 PANICULATE TARPLANT POPULATIONS OBSERVED IN THE SURVEY AREA

Approximate Percent Phenology Number of Location Individuals Vegetative Flowering Fruiting 1 2,000 35 65 0 Total 2,000 N/A N/A N/A

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The proposed project would not impact these species (they occur outside the impact area). However, the BMPs listed in the Recommendations Section below shall be followed during implementation of the proposed project.

Additional Survey Needs Species

Burrowing Owl

The burrowing owl is a California Species of Special Concern; burrow sites are protected. This species is considered an Additional Survey Needs species under the MSHCP. In Southern California, burrowing owls breed and forage in grasslands and prefer flat to low rolling hills in treeless terrain. They are small owls that nest in burrows, typically in open habitats most often along banks and roadsides. The burrowing owl is a widespread species throughout the western United States, but has declined in many other areas due to habitat modification, poisoning of its prey items, shooting, and human disturbance (Remsen 1978).

Section 6.3.2 of the MSHCP requires focused surveys for burrowing owl for sites in the designated Additional Survey Area. A focused burrowing owl burrow survey was conducted in summer 2015 and no burrowing owls or potentially occupied owl burrows were observed during the survey. No evidence was detected to suggest that the western burrowing owl currently occupies the survey area; therefore, focused burrowing owl surveys were not conducted. In addition, the proposed project will be conducted outside the nesting season and no grading will occur with the project. However, BMPs listed in the Recommendations Section below shall be followed during implementation of the proposed project.

Stephens’ Kangaroo Rat

In response to the federal listing of Stephens’ kangaroo rat (Dipodomys stephensi), the Riverside County Habitat Conservation Agency (RCHCA) was formed. Its purpose is to acquire and manage habitat for the Stephens’ kangaroo rat and other associated special status species. The RCHCA Stephens’ Kangaroo Rat Habitat Conservation Plan (HCP) was developed to meet the requirements of the program’s Federal Endangered Species Act Section 10(a) permit. The HCP for this species is managed by the RCHCA. The HCP establishes a Reserve System where activities in the core reserve areas are limited and/or restricted. Areas outside the Reserve System are within a designated Fee Area.

The survey area is located within a designated Fee Area. For projects within a Fee Area, focused surveys for the Stephens’ kangaroo rat are not required, and all potential impacts are mitigated through the RCHCA. Public agencies are not required to pay the mitigation fee for public facilities projects2 in the Fee Area (i.e., outside the core reserves). No federal and/or State permits for the project pertaining to potential impacts on the Stephens’ kangaroo rat would be necessary, regardless of the presence or absence of the Stephens’ kangaroo rat.

Public/Quasi-Public Lands

Public/Quasi-Public lands are lands within public or private ownership that are expected to be managed for open space value and/or in a manner that contributes to the conservation of Covered Species. The proposed project would not impact Public/Quasi-Public lands in Temecula Creek that are owned by the City of Temecula and Temecula Land Homeowners Association (Exhibit 6).

2 This includes public facilities identified in General Plans, Transportation Improvement Plans, Capital Improvement Plans, and other adopted documents.

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Survey Area

Public/Quasi-Public Lands

Temecula Creek

P a l a P a r k

Bellflower Lane

Strawberry Tree Lane Honey Locust Drive

ive Holly Oak Drive Canterfield Dr ve T Dri e ve m Mangro e c u la Athel Way L a n e

Sunflower Way Aerial Source: Google, Jan 2013 D:\Projects\CWE\0004\MXDs\Bio\Habitat_Assessment\ex_PQPLands.mxd

Public/Quasi-Public Lands Exhibit 6 Pala Park Bank Stabilization Project: Geotechnical Exploration

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Urban/Wildlands Interface Issues

The survey area is located within MSHCP Criteria Area Cells 7445 and 7446. The proposed project involves the drilling of six exploratory borings for one to two days, and impacts are expected to be temporary and minimal. However, the BMPs listed in the Recommendations Section below shall be followed during implementation of the proposed project.

OTHER ISSUES

Nesting Raptors

Trees in the riparian forest and ornamental vegetation have the potential to be used for nesting by raptors. Regulations prohibit activities that “take, possess or destroy” any raptor nest or egg (California Fish and Game Code §§3503, 3503.5, and 3513). The noise and disturbance associated with construction may disturb a nesting raptor if present immediately adjacent to the temporary impact area. However, all work will occur outside the raptor nesting season. The BMPs listed in the Recommendations Section below shall be followed during implementation of the proposed project.

Migratory Bird Treaty Act

Habitat along Temecula Creek and the trees and shrubs in the survey area have the potential to be used by nesting birds, which are protected by the Migratory Bird Treaty Act (MBTA). The MBTA prohibits activities that result in the direct take (defined as the killing or possession) of a migratory bird. The noise and disturbance associated with construction may disturb a nesting bird if present immediately adjacent to the temporary impact area. However, all work will occur outside the bird nesting season (March 1 to September 15). The BMPs listed in the Recommendations Section below shall be followed during implementation of the proposed project.

RECOMMENDATIONS

The proposed project would involve geotechnical exploration to assist in the design of the stabilization project. The proposed project includes drilling six exploratory borings using a truck- mounted hollow-stem auger drill rig to evaluate the existing soil and rock, if encountered, and to collect samples for laboratory testing. All activities are to be conducted in the temporary impact area and are expected to take no more than two days. The following BMPs or other BMPs with an equivalent effect, shall be implemented to minimize any effects of the proposed project on biological resources:

• Prior to the initiation of the proposed project, the limits of disturbance (temporary impact area) shall be clearly defined and marked in the field with fencing, stakes, or flagging in order to prevent damage to adjacent vegetation and habitat. • A Monitoring Biologist shall be on site to ensure that the limits of disturbance are fenced and the following procedures are in place: site development considerations (scheduling, preservation of existing vegetation, dust control, soil stabilizers), employee and subcontractor training, spill prevention and control, vehicle and equipment cleaning, water conservation, maintenance and monitoring inspections, documentation, reporting, and certification. • To ensure compliance with the MBTA and Sections 3503, 3503.5, and 3513 of the California Fish and Game Code, all project activities shall be conducted during the non- nesting season for raptors (July 1 to January 31) and the non-nesting season for birds

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(September 16 to February 28) to avoid any potential disturbance of avian breeding activities. • No erodible materials will be deposited into water courses. Brush, loose soils, or other debris material will not be stockpiled within stream channels or on adjacent banks. • The footprint of disturbance will be minimized to the maximum extent feasible. Access to sites will occur on pre-existing access routes to the greatest extent possible. • Equipment storage, fueling, and staging areas will be sited on non-sensitive upland habitat types with minimal risk of direct discharge into riparian areas or other sensitive habitat types. • Active construction areas shall be watered regularly to control dust and to minimize impacts to adjacent vegetation. • All equipment maintenance, staging, and dispensing of fuel, oil, coolant, or any other toxic substances shall occur only in designated areas within the project site’s proposed limits. These designated areas shall be clearly marked and located in such a manner as to capture runoff. • Waste, dirt, rubble, or trash shall not be deposited on native habitat.

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REFERENCES

Abrams, L. 1951. Illustrated Flora of the Pacific States. Vol. III: Geraniums to Figworts (Geraniaceae to Scrophulariaceae). Stanford, CA: Stanford University Press.

———. 1944. Illustrated Flora of the Pacific States. Vol. II: Buckwheats to Kramerias (Polygonaceae to Krameriaceae). Stanford, CA: Stanford University Press.

———. 1923. Illustrated Flora of the Pacific States. Vol. I: Ferns to Birthworts (Ophioglossaceae to Aristolochiaceae). Stanford, CA: Stanford University Press.

Abrams, L. and R. Ferris. 1960. Illustrated Flora of the Pacific States. Vol. IV: Bignonias to Sunflowers (Bignoniaceae to Compositae). Stanford, CA: Stanford University Press.

American Ornithologists’ Union (AOU). 2013 (September). Check-list of North American Birds (7th ed., as revised through 54th Supplement). Washington, D.C.: AOU. http://www.aou.org/ checklist/north/index.php.

Baldwin, B.G., D.J. Keil, R. Patterson, T.J. Rosatti, and D.H. Wilken (Eds.). 2012. The Jepson Manual: Vascular Plants of California (Second ed.). Berkeley, CA: University of California Press.

California Department of Fish and Game (CDFG).2012 (March 7). Staff Report on Burrowing Owl Mitigation. Sacramento, CA: CDFG.

———. 2009 (November 24). Protocols for Surveying and Evaluating Impacts to Special Status Native Plant Populations and Natural Communities. Sacramento, CA: CDFG

California Department of Fish and Wildlife (CDFW). 2015 (August). California Natural Diversity Database. Records of Occurrence for the USGS Bachelor Mountain, Murrieta, Pechanga, and Temecula 7.5-minute quadrangles. Sacramento, CA: CDFW, Natural Heritage Division.

California Native Plant Society (CNPS). 2015a. Locational Inventory of Rare and Endangered Vascular Plants of California. Records of occurrence for the USGS Bachelor Mountain, Murrieta, Pechanga, and Temecula 7.5-minute quadrangles. Sacramento, CA: CNPS. http://www.rareplants.cnps.org/advanced.html.

———. 2015b. Taxonomic and Status Inventory of Rare and Endangered Vascular Plants of California (online edition, v8-02). Sacramento, CA: CNPS. http://www.rareplants. cnps.org/.

Center for North American Herpetology (CNAH). 2015 (August, access date). Links by Taxonomy. http://www.cnah.org/default.aspx.

Dudek and Associates, Inc. (Dudek). 2003. Western Riverside County Multiple Species Habitat Conservation Plan (Prepared for the Riverside County Integrated Project). Encinitas, CA: Dudek. http://www.wrc-rca.org/Permits_Docs.html.

Hickman, J.C., Ed. 1993. The Jepson Manual of Higher Plants of California. Berkeley, CA: University of California Press.

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Lanman C.W., K. Lundquist, H. Perryman, J.E. Asarian, B. Dolman, R.B. Lanman, and M.M. Pollock. 2013. The historical range of beaver (Castor canadensis) in coastal California: an updated review of the evidence. California Fish and Game 99(4) 193–221. Sacramento, CA: CDFW.

Munz, P.A. 1974. A Flora of Southern California. Berkeley, CA: University of California Press.

Remsen, J.V., Jr. 1978. Bird Species of Special Concern in California: An Annotated List of Declining or Vulnerable Bird Species (Administrative Report No. 78-1). Sacramento, CA: CDFG, Wildlife Management Branch.

Riverside, County of. 2006 (as amended). Burrowing Owl Survey Instructions for the Western Riverside Multiple Species Habitat Conservation Plan Area. Riverside, CA: the County. http://www.tlma.co.riverside.ca.us/epd/documents/Burrowing_Owl_Survey_ Instructions. pdf.

Riverside County Habitat Conservation Agency (RCHCA). Habitat conservation Plan for the Stephens’ Kangaroo Rat in Western Riverside County, California. Riverside, CA: RCHCA. http://www.skrplan.org/skr.html.

Riverside County Integrated Project (RCIP). 2015 (2015, last updated). RCIP Conservation Summary Report Generator. Riverside, CA: RCIP. http://onlineservices.rctlma.org/ content/rcip_report_generator.aspx.

Sawyer, J.O., T. Keeler-Wolf, and J.M. Evens. 2009. A Manual of California Vegetation (SecondEdition). Sacramento, CA: CNPS.

U.S. Department of Agriculture, Natural Resources Conservation Service (USDA NRCS). 2015 (August 4). Soil Survey Geographic (SSURGO) Database for Western Riverside Area, California. Fort Worth, TX: USDA, NRCS.

———. 2014 (March). National Hydric Soils List, California. Fort Worth, TX: USDA, NRCS.

Western Regional Climate Center (WRCC). 2015. Cooperative Climatological Data Summary for Station 042805 (Elsinore). Reno, NV: WRCC. http://www.wrcc.dri.edu/climatedata /climsum/.

Wilson, D.E. and D.A.M. Reeder (Eds). 2005. Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed). Baltimore, MD: Johns Hopkins University Press.

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APPENDIX A

PLANT AND WILDLIFE COMPENDIA

Pala Park Bank Stabilization Project: Geotechnical Exploration

APPENDIX A-1

PLANT COMPENDIUM

Species Scientific Name Common Name MAGNOLIIDS SAURURACEAE - LIZARD'S-TAIL FAMILY Anemopsis californica yerba mansa EUDICOTS ANACARDIACEAE - SUMAC FAMILY Rhus integrifolia lemonade berry ASTERACEAE - SUNFLOWER FAMILY Ambrosia psilostachya western ragweed Baccharis pilularis ssp. consanguinea coyote brush Baccharis salicifolia ssp. salicifolia mulefat Centaurea melitensis* tocalote Deinandra fasciculata fascicled tarplant Erigeron canadensis horseweed Heterotheca grandiflora telegraph weed Pseudognaphalium biolettii bi-color everlasting Pseudognaphalium californicum California everlasting Sonchus asper ssp. asper* prickly sow thistle BORAGINACEAE - BORAGE FAMILY Cryptantha sp. cryptantha Heliotropium curassavicum var. oculatum alkali heliotrope BRASSICACEAE - MUSTARD FAMILY Hirschfeldia incana* shortpod mustard Lobularia maritima* sweet alyssum Sisymbrium irio* london rocket CISTACEAE - ROCKROSE FAMILY Cistus x purpureus* orchid rockrose EUPHORBIACEAE - SPURGE FAMILY Croton californicus California croton FABACEAE - LEGUME FAMILY Astragalus pomonensis Pomona milkvetch Vicia americana ssp. americana American vetch GERANIACEAE - GERANIUM FAMILY Erodium cicutarium* redstem filaree NYCTAGINACEAE - FOUR O'CLOCK FAMILY Abronia villosa var. aurita chaparral sand-verbena ONAGRACEAE - EVENING PRIMROSE FAMILY Epilobium campestre smooth willowherb Oenothera californica California evening primrose PLATANACEAE - SYCAMORE FAMILY Platanus ×hispanica* london plane tree Platanus racemosa western sycamore POLYGONACEAE - BUCKWHEAT FAMILY Eriogonum gracile slender woolly buckwheat

R:\Projects\CWE_CAWaterEng\3CWE000400\HA\Pala Park HA-082415.docx A-1 Plant and Wildlife Compendia Pala Park Bank Stabilization Project: Geotechnical Exploration

PLANT COMPENDIUM

Species Scientific Name Common Name ROSACEAE - ROSE FAMILY Rosa californica California rose SALICACEAE - WILLOW FAMILY Populus fremontii ssp. fremontii Fremont cottonwood Salix exigua sand bar willow Salix gooddingii goodding's black willow SOLANACEAE - NIGHTSHADE FAMILY Nicotiana glauca* tree tobacco Nicotiana quadrivalvis indian tobacco MONOCOTS CYPERACEAE - SEDGE FAMILY Isolepis sp. bulrush JUNCACEAE - RUSH FAMILY Juncus sp. rush POACEAE - GRASS FAMILY Bromus diandrus* ripgut brome Bromus madritensis ssp. madritensis* foxtail brome Cortaderia selloana* Selloa pampas grass Schismus barbatus* Mediterranean schismus TYPHACEAE - CATTAIL FAMILY Typha sp. Cattail * non-native species

R:\Projects\CWE_CAWaterEng\3CWE000400\HA\Pala Park HA-082415.docx A-2 Plant and Wildlife Compendia Pala Park Bank Stabilization Project: Geotechnical Exploration

APPENDIX A-2

WILDLIFE COMPENDIUM

Species Scientific Name Common Name AMPHIBIANS RANIDAE - TRUE FROG FAMILY Lithobates catesbeianus* American bullfrog BIRDS ANATIDAE - SWAN, GOOSE, AND DUCK FAMILY Anas platyrhynchos mallard ARDEIDAE - HERON FAMILY Egretta thula snowy egret RALLIDAE - RAIL AND COOT FAMILY Gallinula chloropus common moorhen Fulica americana American coot COLUMBIDAE - PIGEON AND DOVE FAMILY Zenaida macroura mourning dove TROCHILIDAE - HUMMINGBIRD FAMILY Calypte anna Anna's hummingbird FALCONIDAE - FALCON FAMILY Falco sparverius American kestrel TYRANNIDAE - TYRANT FLYCATCHER FAMILY Sayornis saya Say's phoebe CORVIDAE - JAY AND CROW FAMILY Corvus brachyrhynchos American crow MIMIDAE - MOCKINGBIRD AND THRASHER FAMILY Mimus polyglottos northern mockingbird PARULIDAE - WOOD-WARBLER FAMILY Geothlypis trichas common yellowthroat EMBERIZIDAE - SPARROW FAMILY Pipilo maculatus spotted towhee Melozone crissalis California towhee ICTERIDAE - BLACKBIRD, COWBIRD AND ORIOLE FAMILY Agelaius phoeniceus red-winged blackbird FRINGILLIDAE - FINCH FAMILY Haemorhous mexicanus house finch Carduelis psaltria lesser goldfinch MAMMALS LEPORIDAE - HARE AND RABBIT FAMILY Sylvilagus audubonii desert cottontail CASTORIDAE - BEAVER FAMILY Castor canadensis* American beaver * introduced species

R:\Projects\CWE_CAWaterEng\3CWE000400\HA\Pala Park HA-082415.docx A-3 Plant and Wildlife Compendia

APPENDIX B

CNDDB FORMS

Mail to: California Natural Diversity Database For Office Use Only Department of Fish and Game Source Code Quad Code 1807 13th Street, Suite 202 Sacramento, CA 95811 Elm Code Occ. No. Fax: (916) 324-0475 email: [email protected] EO Index No. Map Index No. Date of Field Work (mm/dd/yyyy): 06/22/2015

Reset California Native Species Field Survey Form Send Form Scientific Name: Abronia villosa var. aurita

Common Name: Chaparral sand-verbena

Species Found? kk✔ Reporter: Jennifer Pareti Yes No If not, why? Address: 3 Hutton Centre Drive Suite 200 Total No. Individuals 476 Subsequent Visit? kk yes ✔ no Santa Ana, CA 92707 Is this an existing NDDB occurrence? k✔ no k unk. Yes, Occ. # E-mail Address: [email protected] 1 Rancho Santa Ana Herbarium Collection? If yes: Phone: (714) 751-7373 Number Museum / Herbarium

Plant Information Animal Information

22%% 66 12 % Phenology: # adults # juveniles # larvae# egg masses # unknown vegetative flowering fruiting kkkkkk wintering breeding nesting rookery burrow site other Location Description (please attach map AND/OR fill out your choice of coordinates, below) The proposed project is located north of Pala Community Park, northeast of Canterfield Drive and Temecula Lane intersection in the City of Temecula in Riverside County, California. County: Riverside County Landowner / Mgr.: City of Temecula Quad Name: Pechanga and Temecula Elevation: 1,040 ft T R Sec , ¼ of ¼, Meridian: HMggg S Source of Coordinates (GPS, topo. map & type): GPS T R Sec , ¼ of ¼, Meridian: HMggg S GPS Make& Model Garmin eTrek Vista DATUM: NAD27gg NAD83 WGS84 gHorizontal Accuracy ~15 ft meters/feet Coordinate System: UTM Zone 10gg UTM Zone 11 ✔ OR Geographic (Latitude & Longitude) g Coordinates: see attached.

Habitat Description (plants & animals) plant communities, dominants, associates, substrates/soils, aspects/slope: Animal Behavior (Describe observed behavior, such as territoriality, foraging, singing, calling, copulating, perching, roosting, etc., especially for avifauna): Plants were observed in flood plain scrub, mulefat scrub, and ruderal vegetation in the survey area (Table 2; Exhibit 5). The associated species occurring with the identified chaparral sand-verbena populations included (in order of dominance): California croton (Croton californicus), shortpod mustard (Hirschfeldia incana), red brome (Bromus madritensis ssp. rubens), Western ragweed (Ambrosia psilostachya), slender woolly buckwheat (Eriogonum gracile), Mediterranean schismus (Schismus barbatus), and scattered California buckwheat (Eriogonum fasciculatum). These plants were observed on flat or gently sloping areas mapped as having Grangeville sandy loam and Grangeville fine sandy loam soils. Please fill out separate form for other rare taxa seen at this site.

Site Information Overall site/occurrence quality/viability (site + population): k Excellent k✔ Good kk Fair Poor Immediate AND surrounding land use: The survey area is open space (Temecula Creek) adjacent to a residential park (Pala Park) and residential. Visible disturbances: walking trails Threats: Pedestrian traffic from residential area, trash, collecting of plants, flood.

Comments:

Determination: (check one or more, and fill in blanks) Photographs: (check one or more) Slide Print Digital ✔ Keyed (cite reference): Baldwin et al and Munz Plant / animal ✔ Compared with specimen housed at: Habitat ✔ Compared with photo / drawing in: Diagnostic feature ✔ By another person (name): Dave Bramlett Other: May we obtain duplicates at our expense?gg yes ✔ no

DFG/BDB/1747 Rev. 6/16/09 Mail to: California Natural Diversity Database For Office Use Only Department of Fish and Game Source Code Quad Code 1807 13th Street, Suite 202 Sacramento, CA 95811 Elm Code Occ. No. Fax: (916) 324-0475 email: [email protected] EO Index No. Map Index No. Date of Field Work (mm/dd/yyyy): 06/22/2015

Reset California Native Species Field Survey Form Send Form Scientific Name: Deinandra paniculata

Common Name: paniculate tarplant

Species Found? kk✔ Reporter: Jennifer Pareti Yes No If not, why? Address: 3 Hutton Centre Drive Suite 200 Total No. Individuals 2,000 Subsequent Visit? kk yes ✔ no Santa Ana, CA 92707 Is this an existing NDDB occurrence? k no k✔ unk. Yes, Occ. # E-mail Address: [email protected] Collection? If yes: Phone: (714) 751-7373 Number Museum / Herbarium

Plant Information Animal Information

35%% 65 0 % Phenology: # adults # juveniles # larvae# egg masses # unknown vegetative flowering fruiting kkkkkk wintering breeding nesting rookery burrow site other Location Description (please attach map AND/OR fill out your choice of coordinates, below) The proposed project is located north of Pala Community Park, northeast of Canterfield Drive and Temecula Lane intersection in the City of Temecula in Riverside County, California. County: Riverside County Landowner / Mgr.: City of Temecula Quad Name: Pechanga and Temecula Elevation: 1,040 ft T R Sec , ¼ of ¼, Meridian: HMggg S Source of Coordinates (GPS, topo. map & type): GPS T R Sec , ¼ of ¼, Meridian: HMggg S GPS Make& Model Garmin eTrek Vista DATUM: NAD27gg NAD83 WGS84 gHorizontal Accuracy ~15 ft meters/feet Coordinate System: UTM Zone 10gg UTM Zone 11 ✔ OR Geographic (Latitude & Longitude) g Coordinates: see attached.

Habitat Description (plants & animals) plant communities, dominants, associates, substrates/soils, aspects/slope: Animal Behavior (Describe observed behavior, such as territoriality, foraging, singing, calling, copulating, perching, roosting, etc., especially for avifauna): Plants were observed in ruderal vegetation in the survey area (Table 3; Exhibit 5). The associated species included (in order of dominance): tocalote (Centaurea melitensis), red-stemmed filaree (Erodium cicutarium), shortpod mustard (Hirschfeldia incana), and coastal goldenbush (Isocoma menziesii). These plants were observed on flat or gently sloping areas mapped as having Grangeville sandy loam soils.

Please fill out separate form for other rare taxa seen at this site.

Site Information Overall site/occurrence quality/viability (site + population): k Excellent k✔ Good kk Fair Poor Immediate AND surrounding land use: The survey area is open space (Temecula Creek) adjacent to a residential park (Pala Park) and residential. Visible disturbances: walking trails Threats: Pedestrian traffic from residential area, trash, collecting of plants, flood.

Comments:

Determination: (check one or more, and fill in blanks) Photographs: (check one or more) Slide Print Digital ✔ Keyed (cite reference): Baldwin et al Plant / animal ✔ Compared with specimen housed at: Habitat ✔ Compared with photo / drawing in: Diagnostic feature By another person (name): ✔ Other: familiarity with species May we obtain duplicates at our expense?gg yes ✔ no

DFG/BDB/1747 Rev. 6/16/09