Biological Technical Report
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BLUE CONSULTING GROUP BIOLOGY LAND USE & ENTITLEMENTS BIOLOGICAL RESOURCES REPORT FOR THE PACIFIC INDUSTRIAL #1 PROPERTY SAN MARCOS, CA Update: April 28, 2015 October 12, 2012 P.O. BOX 501115 SAN DIEGO, CA 92150 1 858.391.8145 [email protected] BIOLOGICAL RESOURCES REPORT FOR THE PACIFIC INDUSTRIAL #1 PROPERTY SAN MARCOS, CA Prepared For: Pacific Industrial No. 1 LLC 105 South Pacific Street San Marcos, CA 92069 Update April 28, 2015 October 12, 2012 Prepared By: Michael K. Jefferson Senior Biologist BLUE Consulting Group P.O. Box 501115 San Diego, CA 92150 (858) 391-8145 TABLE OF CONTENTS Summary of Findings 3 Introduction 4 Survey Methods 4 Existing Conditions 5 A. Topography and Soils 5 B. Botany 5 C. Zoology 6 D. Sensitive Biological Resources 7 E. Wetlands and Non-Wetland Jurisdictional Waters 11 Proposed Project Impacts / Alt. with Buffer Impact Analyis 12 A. Plant Community Impacts 14 B. Wildlife Impacts 14 C. Sensitive Biological Resources Impacts 15 D. Jurisdictional Wetlands and Waters of the U.S. 15 Mitigation Measures 16 A. Plant Communities 16 B. Sensitive Plant Species 16 C. Sensitive Wildlife Species 16 D. Jurisdictional Waters 17 References Cited 18 Certification 21 5 1 TABLE OF CONTENTS (cont.) FIGURES 1: Regional Project Location follows page 4 2: Project Location follows page 4 3: Aerial View follows page 4 4: Habitat and Sensitive Species Observed On-Site follows page 6 5: Proposed Development Impact Footprint follows page 12 6: Alternative Preserve and Buffer, Reduced Footprint follows page 13 TABLES 1: Plant Communities page 6 2: Sensitive Plant Species Observed or with the Potential for Occurrence follows page 11 3: Sensitivity Codes follows page 11 4: Sensitive Wildlife Species Potentially Occurring follows page 11 5a: Proposed Project Plant Community Impacts 12 5b: Proposed Project Rare/Sensitive Species Impacts 12 6a: Alternative-Onsite Preserve and Buffer; Plant Community Impacts 13 6b: Alternative-Onsite Preserve and Buffer; Rare/Sensitive Species Impacts 13 PHOTOGRAPHS 1: Looking north across the property from Grand Ave. follows page 6 2: Looking south east across the property from the North West corner follows page 6 3: Looking east across the northern property line follows page 6 4: Sensitive species onsite follows page 6 5: Orcutt’s brodiaea, close-up follows page 9 6: Thread-leaved brodiaea, close-up follows page 9 ATTACHMENTS 1: Plant Species Observed 2: Wildlife Species Observed/Detected 3: Protocol Wet Season Vernal Pool Survey Report 4: Protocol Dry Season Vernal Pool Survey Report 5: “Feasibility Analysis Pacific Industrial Lot 39” (dated, February 5, 2011) 6: California Endangered Species Act (CESA) Application 7: California Endangered Species Act (CESA), Letter of Complete Application 2 Summary of Findings The approximately 2.77 acre Pacific Street property is located in the City of San Marcos. The purpose of this report is to determine the total acreage, type of vegetation/habitat, and what, if any, sensitive or rare species may be impacted as a result of the proposed grading plan as well as assess any potential significant impacts and recommend measures to avoid, minimize, and/or mitigate significant impacts consistent with federal, state, and local rules and regulations including the Federal Endangered Species Act (FESA), the California Environmental Quality Act (CEQA), and the City of San Marcos. The site is within the developed and improved frontage of Grand Avenue and is currently an open lot dominated by disturbed habitat supporting non-native grasslands. Three sensitive biological resources (sensitive plant species) were observed onsite, thread leaved brodiaea (Brodiaea filifolia), Orcutt’s brodiaea (Brodiaea orcuttii) and San Diego gumplant (Grindelia hirsutula var. hallii). Thread leaved brodiaea (Brodiaea filifolia) is a local/state and federally protected species; the observed population is not within an area designated as USFWS ‘critical habitat’ (Federal Register, USFWS; 2011). Orcutt’s brodiaea and San Diego gumplant are not listed as a Federal or State regulated species, but are California Native Plant Society (CNPS) listed species. The proposed project would potentially result in significant impacts to the non-native grasslands, San Diego gumplant, Orcutt’s brodiaea and thread-leaved brodiaea and shall require mitigation to reduce the impact(s) to a level below significance. The proposed mitigation involves offsite purchase of non-native grasslands mitigation credits and transplanting all Brodiaea sp. observed onsite to existing, managed habitat preserves which currently support the species in the City of San Marcos. The thread-leaved brodiaea would be transplanted from its’ current USFWS non-listed ‘critical habitat’ location to a preserve (Loma Alta-Santalina) that is listed within the USFWS “critical habitat’ area (Federal Register, USFWS; 2011). As potential impacts to a federally listed species, thread-leaved brodiaea, are proposed an initial alternative was prepared and analyzed (biologically and economically) which preserves the population intact onsite and creates an approximately 100 foot deep buffer between the proposed development (significantly reduced footprint and access potential) and the outer edge of the population. The proposed Alternative which creates the onsite preserve and buffer absorbs approximately 37.5% of the property and renders the remaining buildable area so small that the property’s developability is no longer financially equitable. The complete report and analysis has been included in the Appendices. 3 Introduction The property is located in the heart of San Marcos, immediately south of State Highway 78 and immediately north of the intersection of Pacific Street and Grand Ave. (Figures 1, 2, and 3). The property is surrounded on all sides by development, including the City of San Marcos approved SDP 06-322 HLP (2010) adjoining property to the north. The 2.77 acre parcel/property abuts the maintained City of San Marcos Road Right of Way for Grand Ave. and Pacific Street, which totals approximately 0.19 acres. The project will be utilizing these 0.19 acres so the area analyzed totals 2.96-acres. This report describes the existing biological resources, the potential for significant biological impacts, and the potential mitigation measures required if those sensitive habitats were to be impacted. Survey Methods BLUE Consulting Group (BLUE) senior biologist, Mike Jefferson, conducted the general, sensitive and rare vegetation and zoology surveys on June 25, 2009, January 11th, 2010, May 14, 2010 and June 10th 2010. The general, sensitive and rare vegetation and zoology surveys were completed again in 2012 (May 18, June 4 and June 20) to identify the location and number of the blooming brodiaea population onsite. Victor Novik (10(a)(1)(A) Permit # TE 069534-0) completed the protocol wet season vernal pool survey (Attached; March, 2008) and Chuck Black completed the dry season vernal pool basin survey (10(a)(1)(A) Permit # TE 835549-5; Attached; July, 2008). Survey methods for the wet season vernal pool survey followed those outlined in the Year 1996 Interim Survey Guidelines to Permittee’s for Recovery Permits under Section 10(a)(1)(A) of the Endangered Species Act for the Listed Vernal Pool Branchiopods (USFWS 1996). Surveys were conducted after initial storm events to determine when pools/swales have been inundated. A pool/ swale is considered inundated when it holds greater than 3 cm of standing water 24 hours after a rain event. Pools/swales were adequately sampled once every two weeks, beginning no later than two weeks after the initial inundation and continued until the pools/swales were dry. The edges, bottoms (if accessible), and water column were all sampled using an aquarium net. Survey methods for the dry season vernal pool survey; Soil Processing for Cyst Presence involved the following: Individually packaged approximately 200 ml dry soil samples are each hydrated for approximately 12 hours in tap water then washed through a set of sieves. Material passing through a Number 45 (.0139”) USA Standard Testing Sieve, A.S.T.M.E.-11 specification and caught on a Number 70 (.0083”) Sieve was rinsed into a container with approximately 50 ml of a saturated brine solution to float organic material, including fairy shrimp cysts. The material floating on the brine was decanted onto a paper filter on a filter funnel, and water was removed through the filter paper by vacuum suction. The material left on the paper was examined under a 6.3-570x power Olympus SZX9 Zoom Stereo Microscope. Distinctive fairy shrimp cysts, if present, were counted. Numbers of ostracode (seed shrimp) shells from samples, if present, were estimated. 4 5 roperty psq i2I egionl rojet2votion homs2frothersD2PHHI f r h m 2 o d helly2hrive rojet2votion 2 U V z x iinity2wp psq i2P H x ifi2treet q r PHH peet n d 2 e v e F 2 U V roperty roperty2eeril psq i2Q General and sensitive species survey methods: Animal species observed directly or detected from calls, tracks, scat, nests, or other sign were noted. All plant species observed on-site were also noted, and plants that could not be identified in the field were identified later using taxonomic keys. The site visit included a directed survey for sensitive plants, specifically Brodiaea sp, which would be apparent at the time of the surveys; either vegetatively or in flower. Vegetation was mapped in the field on a 1"=100' topographic map of the site with the aid of a February 2008 1" = 200' aerial photograph. Limitations to the surveys were few. All plants occurring on site should have been observable. The general zoology survey did not include trapping for rodents or reptiles, some species of which are highly likely to occur but were not observed. Because surveys were performed in daylight, nocturnal animals were not directly observed. Floral nomenclature for common plants follows Hickman (1993). Plant community classifications follow the California Natural Diversity Data Base (NDDB) (Holland 1986).