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WATER QUALITY IMPACT AND VAPOR PLUME PREVENTION <br /> • Protective measures will be enacted to assure that water quality will not be impacted by the <br /> excavation procedures The most obvious source of water quality impact is from <br /> contaminant leaching This will be prevented by placing all spoils removed from the <br /> excavation on Visqueen and covering them Measures will be taken to prevent the <br /> introduction of stormwater runoff into the excavation The use of these protective <br /> measures together with the knowledge that groundwater is located at a depth of <br /> approximately 60 feet should be more than adequate to protect the integrity of the <br /> groundwater quality at the site <br /> The release of contaminant vapor plumes as a result of excavation activities will be <br /> • <br /> minimal due to the low volatility of the diesel fuel present in the soil. <br /> • <br /> • <br /> • <br /> • <br /> rima 10(ml-4) Page 13 <br /> • AMERICAN <br />