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• Keep materials out of the rain -- prevent runoff contamination at the <br />source. Cover exposed piles of soil or construction materials with <br />plastic sheeting or temporary roofs <br />• Water or cover exposed soils twice daily to minimize wind erosion. <br />Finding: The mitigation measure identified above is feasible and would <br />reduce the potentially significant environmental impact described above to a less -than- <br />significant level. <br />The mitigation measure identified above would reduce the potentially <br />significant environmental impact described above to a less- than - significant level by <br />implementing best management practices to reduce potential soil erosion by minimizing <br />the amount of soil exposed to wind and stormwater runoff. <br />B. Stormwater Quality <br />Potential Impact: The proposed project would contain typical urban <br />activities (such as landscaping, vehicle parking, and maintenance activities) that could <br />affect the stormwater quality. (Potentially Significant) <br />Mitigation: The following mitigation measures, as set forth in the Initial <br />Study and the FEIR, are hereby adopted and will be implemented as provided in the <br />Mitigation Monitoring Program: <br />Implement BMPs and NPDES Measures During Operation. The project <br />sponsor shall implement, but not be limited to, the following BMPs or specific measures <br />in the NPDES permit, whichever is more comprehensive, that would reduce the <br />potential degradation of water quality in San Francisco Bay to a less- than - significant <br />level: <br />• Install oil and grease separators or fossil fuel filters in the drains to <br />filter out automotive pollutants. <br />• Cover areas where potential pollutants such as trash, grease, <br />chemicals, paints, and hazardous and biological wastes are stored <br />or collected. <br />• Seal leaking dumpsters or storage areas immediately. <br />• Transfer hazardous materials and wastes in such a way as to <br />prevent leaks, spills, or accidental releases. Clean up immediately <br />once they occur. <br />• Sweep parking lots and outdoor storage areas. Pick up and dispose <br />of debris, never sweep into drain. Never hose off paved areas. <br />25 <br />