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The minimum level of protection for workers coming into direct contact with <br /> contaminated materials will be Level D: <br /> o Coveralls or similar clothing, <br /> o Reflective safety vests, <br /> o Work gloves, as necessary, <br /> o Steel-toed boots, <br /> o Safety glasses, as necessary, <br /> o Hard hat, and <br /> o Hearing protection, as necessary. <br /> • Dust Control: Construction operations will be conducted to minimize the <br /> creation and dispersion of dust, including the following measures: <br /> • Application of water while grading, excavating, and loading, as needed; <br /> • Limiting vehicle speeds to 15 miles per hour on unpaved portions of the <br /> Sites; <br /> • Minimizing drop heights while loading/unloading soil; and, <br /> • Soil that is suspected of being contaminated will be covered by an <br /> impermeable layer. <br /> • Additional dust control measures may be identified and implemented by <br /> contractors, as necessary, especially if dry and windy conditions persist <br /> during periods of earthwork. <br /> • Compliance with all Bay Area Air Quality Management District rules <br /> and regulations. <br /> • Vertical and Horizontal Preferential Pathways: If development plans <br /> include the construction of deep foundations,the foundation of the buildings <br /> shall incorporate measures to help reduce the potential for the downward <br /> migration of contaminated groundwater. These measures shall be identified <br /> in the site-specific geotechnical investigation reports. Appropriate measures <br /> shall be implemented to reduce vapor migration through trench backfill and <br /> utility conduits. Such measures may include placement of low-permeability <br /> backfill "plugs" at intervals on-site and where utilities extend off current <br /> parcel boundaries. <br /> • Storm Water Pollution Controls: A storm water pollution prevention plan <br /> (SWPPP) will be required to be prepared for the site. Storm water pollution <br /> controls shall be based on best management practices (BMPs), such as those <br /> described in "Guidelines for Construction Projects" and "Erosion and <br /> Sediment Control Field Manual" published by the San Francisco Regional <br /> Water Quality Control Board. <br /> • Excavation De-Watering: Although not anticipated, if excavation de- <br /> watering is required, the water will be sampled and analyzed prior to <br /> pumping to evaluate discharge alternatives. The developer's environmental <br /> consultant shall collect a sample of the water for laboratory analyses for <br /> Agreement to Conditions April 21,2014 <br /> PLN2013-00045 Page 9 of) ,' <br />