Biological Assessment for Prado Park
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Biological Report for Prado Park Commercial Development Tentative Parcel Map CO 06-0143 APN 076-341-012 Prado Road San Luis Obispo, California Prepared for Prado Park, LLC. Attention: Byron Davis 625 Mulligan Lane Arroyo Grande, CA 93420 by ALTHOUSE AND MEADE, INC. BIOLOGICAL AND ENVIRONMENTAL SERVICES 1875 Wellsona Road Paso Robles, CA 93446 (805) 467-1041 October 2008 (Revised December 19, 2008) 596.01 Althouse and Meade, Inc. – 596.01 Table of Contents Synopsis .............................................................................................................................. 1 1.0 Introduction............................................................................................................... 2 1.1 Project Location and Description .......................................................................... 2 1.2 Responsible Parties................................................................................................ 3 2.0 Methods..................................................................................................................... 3 3.0 Results....................................................................................................................... 4 3.1 Existing Conditions ............................................................................................... 4 3.2 Soils ....................................................................................................................... 5 3.3 Habitat Types......................................................................................................... 5 3.3.1 Freshwater emergent wetland ......................................................................... 5 3.3.2 Ruderal pasture ............................................................................................... 6 3.4 Plant List................................................................................................................ 6 3.5 Wildlife List........................................................................................................... 8 3.6 Special Status Plants and Animals ...................................................................... 11 3.6.1 Introduction to CNPS Lists........................................................................... 11 3.6.2 Introduction to CNDDB definitions.............................................................. 11 3.6.3 Special status species list .............................................................................. 12 3.6.4 Special status plants that could or do occur on the property......................... 23 3.6.5 Special Status animals that could occur on the property .............................. 24 3.6.6 Special Status species not expected to occur on the property....................... 25 3.6.7 Sensitive natural communities ...................................................................... 25 4.0 Discussion............................................................................................................... 25 4.1 General Discussion of Property Conditions ........................................................ 25 4.2 Regulatory Framework........................................................................................ 26 5.0 Potential Impacts..................................................................................................... 27 5.1 Habitat Impacts.................................................................................................... 27 5.1.1 Freshwater emergent wetland ....................................................................... 27 5.1.2 Ruderal/pasture ............................................................................................. 27 5.2 Common Wildlife Impacts .................................................................................. 27 5.2.1 Nesting habitat .............................................................................................. 27 5.2.2 Reduction of wildlife movement corridors................................................... 28 5.2.3 Displacement and/or take.............................................................................. 28 5.3 Special Status Species Impacts............................................................................ 28 Biological Report for Prado Park Development ii Prado Road, San Luis Obispo Althouse and Meade, Inc. – 596.01 5.3.1 Rare plants .................................................................................................... 28 5.3.2 Special animals ............................................................................................. 28 6.0 Mitigation Recommendations................................................................................. 29 6.1 General Project Considerations ........................................................................... 29 6.1.1 Low impact development.............................................................................. 29 6.1.2 Worker education meeting............................................................................ 29 6.1.3 Biological monitor ........................................................................................ 30 6.1.4 Equipment storage and materials management............................................. 30 6.2 Habitat Mitigations.............................................................................................. 30 6.2.1 Emergent freshwater wetland ....................................................................... 30 6.2.2 Ruderal/pasture ............................................................................................. 31 6.3 Common Wildlife Mitigations............................................................................. 31 6.3.1 Nesting habitat .............................................................................................. 31 6.3.2 Reduction of wildlife movement corridors................................................... 32 6.3.3 Displacement and/or take.............................................................................. 32 6.4 Mitigations for Special Status Species ................................................................ 32 6.4.1 Congdon’s tarplant........................................................................................ 32 6.4.2 Special status animals ................................................................................... 33 7.0 References............................................................................................................... 34 8.0 Figures..................................................................................................................... 36 9.0 Photographs............................................................................................................. 45 APPENDIX A – Status Codes ....................................................................................... A–1 APPENDIX B – CNDDB Reports..................................................................................B–1 APPENDIX C – Fairy Shrimp Survey Results...............................................................C–1 APPENDIX D – NRCS Practice #412........................................................................... D–1 List of Tables TABLE 1. RESPONSIBLE PARTIES......................................................................................... 3 TABLE 2. BIOLOGICAL SURVEY DATES................................................................................ 3 TABLE 3. PLANT LIST.......................................................................................................... 6 TABLE 4. WILDLIFE LIST..................................................................................................... 8 TABLE 5. SPECIAL STATUS SPECIES LIST........................................................................... 13 Biological Report for Prado Park Development iii Prado Road, San Luis Obispo Althouse and Meade, Inc. – 596.01 Synopsis • This biological report examines a ±20.15-acre property on Prado Road at the south edge of the City of San Luis Obispo, California. As per Mitigation Measure BIO-1.1 from the 2003 Final EIR for the Airport and Margarita Area Specific Plans, this report provides an assessment of affected habitats and describes wetland resources, sensitive natural communities, and special status species on the subject property. • The applicant proposes development of a commercial subdivision consisting of seven buildings. The property is located on the south side of Prado Road at the southeast corner of San Luis Obispo. • The property consists of two habitat types: emergent wetland, and ruderal/pasture habitats. Floristic surveys of the property identified 35 species of plants. • Six special status plants and four special status animals have the potential to occur on or near the property. One special status species, Congdon’s tarplant (Centromadia parryi ssp. congdonii) was observed on the property during site surveys conducted in 2008. • Biological resources that could be impacted by a proposed commercial development project on the property include freshwater emergent wetland, ruderal pasture, common plant and animal species, nesting birds, and special status plant and animal species. The applicant intends to minimize impacts to wetlands and special status plants on the property. Impacts to biological resources can be mitigated to a less than significant level. • Potential impacts to biological resources are outlined, and mitigation recommendations