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(~ _ ~. _ Hydrology and Water Quality 1. Potential degradation of surface water quality from runoff during construction and operation of the project Finding. The City finds that the following mitigation measures are feasible and have been incorporated into the MMRP, thereby mitigating the impacts to a less- than-significant level: • Implement asite-specific Water Quality Management Plan with targeted pollutant removal rates, per MM HY-1.1. • Implement an Integrated Pest Management Plan and Pesticide Management Program to minimize the risk of pollutants associated with landscape establishment and maintenance practices in surface water runoff and infiltration to groundwater, per MM HY-1.2. DEIR, p. 3.5-25 2. Potential to alter runoff characteristics, leading to more erosion Finding. The City finds that the following mitigation measures are feasible and have been incorporated into the MMRP, thereby mitigating the impact to a less- than- significant level: Maintain the detention basin and performance goals covering system inspections, maintenance, technical training of staff, and funding mechanisms, per MM HY-3.1. DEIR, p. 3.5-36 3. Construction of residences and structures within a FEMA 100-year flood hazard area Finding. The City finds that the following mitigation measures are feasible and have been incorporated into the MMRP, thereby mitigating the impacts to a less- than-significant level: • Prior to construction, obtain flood hazard areas updates from FEMA (Conditional Letter of Map Revision) ,per MM HY-4.1. Defer certificates of occupancy until implementation of the Livermore Flood Protection Improvements, as defined by the FEMA Conditional Letter of Map Revision (as part of EI Charro Specific Plan), per MM HY- 4.2. DEIR, p. 3.5-39 Land Use and Planning 1. Potential to exceed the average density for commercial uses Stoneridge Drive Specific Plan Amendment and Staples Ranch Project Enviromnental Impact Report Findings and Statement of Overriding Considerations Page 18 of 30