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San Joaquin County Community Environmental Setting,Impacts,and Mitigation Measures — Development Department Biological Resources Prefield Investigation and Coordination with Resource Agencies To prepare for the field surveys,biologists reviewed the existing resource information related to the project area,described above,and coordinated with resource agencies to evaluate whether special-status species or their habitats could occur in the project area. This information was used to develop lists of special-status plant and wildlife species and other sensitive biological resources that could be present in the region. Species were included in these lists if they v were known to occur in the project region(10-mile radius around the project site) and if their habitats could be located in the project site. Plant and wildlife species identified as having the potential to occur in the project region are discussed _ below. Field Surveys 2003 Habitat Assessment Wetland Research Associates, Inc., conducted a habitat assessment of the project area on May 9,2003. The purpose of their assessment was to determine the following. 1. Habitat suitability and likelihood of occurrence of special-status plant and wildlife species potentially occurring at the site. 2. The presence of wetlands potentially subject to federal jurisdiction under Section 404 of the Clean Water Act(CWA). 3. The presence of stream or riparian areas potentially subject to state jurisdiction under Section 1601 or the California Fish and Game Code. 2005 Field Survey _ The Jones & Stokes biological team reviewed the habitat assessment report that was prepared for the proposed Project in May 2003 (Wetlands Research Associates,Inc. 2003). This biological resources section is based on the information contained in the May 2003 habitat assessment report, information gathered from the above-listed resources, and a reconnaissance-level field survey of the project area by Jones & Stokes biologists. The general purpose of the field survey was the following. — ■ Verify the results of previous biological studies conducted on the project site. ■ Characterize plant communities and describe associated wildlife habitat uses, using the best available base maps to prepare figures for the EIR. ■ Assess existing conditions and characterize habitat for special-status plants _ and wildlife. ■ Verify that there are no waters of the United States on the project site. ■ Identify potential direct and indirect impacts on biological resources located on and adjacent to the project site. DeSilva Gates Quarry Project Draft Environmental Impact Report 3.D-2 As 05105.05