3B Public Hearing 2009 0720 - Laserfiche WebLink

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PLN20084)0030; Cornerstone at San Leandro Crossings March 20, 2009 Mitigated Negative Declaration a qualified biologist to conduct a pre -construction breeding -season survey (approximately February 1 through August 31) to determine if any birds are nesting on or directly adjacent to the project area. The survey shall be conducted during the same calendar year that construction is planned to begin. If no nesting birds are found, then no further action would be required. If nesting birds are found within the trees or on or directly adjacent to the project area, the project applicant shall avoid all bird nest sites located in the project area during the breeding season (approximately February 1 through August 31), or until it is determined by a qualified biologist that all young have fully fledged (left the nest). If the construction cannot be delayed, avoidance shall include the establishment of a non- disturbance buffer zone around the nest site. The size of the buffer zone will be determined in consultation with the CDFG. The buffer zone shall be delineated by highly visible temporary construction fencing, and shall remain in place until it is determined by a qualified biologist that all young have fully fledged (left the nest). Implementation of Mitigation Measures #18 and #19 reduce potential biology impacts to a less than significant level. Mineral Resources The project area is classified by the California Geological Survey as MRZ-1 , a Mineral Resource Zone for which there is adequate information to indicate that there are no aggregate mineral resources present. Consequently, there would be no impact to mineral resources with project implementation and no mitigation measures are required. Hazards and Hazardous Materials The Cornerstone at San Leandro Crossings site has the potential presence of chemicals of potential concern (COPC) beneath the sites which could present unacceptable risks to construction workers and future residents of the site. Iris Environmental (January 2009) has developed a soil sample plan and a menu of mitigation measures to be utilized as necessary. Additionally, a Phase I (Stantec, 2008) and Phase 11 (Iris Environmental, 2009) Site Assessment has been prepared for the project to identify the potential for onsite or nearby soil or groundwater contamination. The mitigation measures include Subsurface Investigations, Pre -Development Mitigation Measures, Risk Management Measures for Construction Phases, Pre -Construction Planning and Notification, Site -Specific Health and Safety Worker Requirements, Construction Impact Mitigation Measures, Site Control, Equipment Decontamination, Personal Protective Equipment, Dust Control, Vertical and Horizontal Preferential Pathways, Storm Water Pollution Controls, Excavation De -Watering, Additional Soil Management Protocols During Construction Activities, Procedures of Unknown Areas of Contamination, and Imported Fill. Mitigation Measure #20: The applicant shall utilize appropriate remediation efforts identified in the Phase I and Phase II Environmental Assessments, including removal of impacted soils and recompaction. I