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SECTION 2 MONITORING WELL DESTRUCTION RATIONALE AND DESTRUCTION PROCEDURES <br /> 2.1 Well Destruction Procedures <br /> Underground Service Alert will be notified at least 48 hours before drilling activities begin to mark <br /> subsurface utilities near the monitoring wells.A private utility locator also will be contracted to locate <br /> utilities near the monitoring wells. <br /> Well destruction permits will be obtained from San Joaquin County Environmental Health Department <br /> before drilling begins. <br /> Monitoring wells KP-4, KP-4D,and KP-6D will be destroyed in accordance with San Joaquin County Well <br /> Standards(San Joaquin County Environmental Health Department, 2005).The wells will be overdrilled to <br /> remove all materials in the original borings, and the borings will be sealed to within 3 feet of the ground <br /> surface with neat cement.The remainder of the boring will be filled with native soil from the Site.These <br /> monitoring wells are 4 inches in diameter and were originally installed in approximately 10-inch-diameter <br /> borings.Overdrilling will be performed with a hollow-stem auger drill rig equipped with approximately <br /> 10-inch-outside-diameter augers. <br /> 2.2 Investigation-Derived Waste <br /> General refuse from well destruction (for example, polyvinyl chloride pipe,well covers, and cement)will be <br /> disposed of as municipal solid waste. Excess soil, if any,will be spread over the planted portion of the former <br /> bagging plant area. Decontamination water will be discharged on the ground surface in the planted portion <br /> of the former bagging plant area. <br /> 2-2 RDD/140100001(NLH4947.DOC%) <br /> ESIW813114720RD0 <br />