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513.4.2 Tank Contents Removal <br /> • Remaining tank contents will be removed by pumping the contents into a storage unit. If <br /> the tank contents have not been previously characterized, samples will be collected and <br /> analyzed to determine the identity of the material and appropriate disposal alternatives. <br /> 513.4.3 Disposal of Tank Contents <br /> The laboratory test results will be used to insure the contents of the tank are temporarily <br /> stored and/or disposed in accordance with all Federal, State, and local requirements. If <br /> the tank contents are determined to be a Federal, State, or local hazardous waste, they <br /> will be transported and disposed as hazardous/toxic special classified waste in <br /> accordance with all local, State, and Federal Environmental Protection Agency (EPA) <br /> solid waste laws and regulations, specifically Resource Conservation and Recovery Act <br /> (RCRA). Additional sampling and analysis for waste stream characterization will be <br /> conducted as required by the off-site treatment, storage, or disposal facility (TSDF). All <br /> remaining tank contents will be purged prior to starting tank excavation operations. <br /> 513.4.4 Associated Tank Piping and Tank Appurtenances <br /> The above procedures also apply to all associated piping and tank appurtenances. <br /> Appurtenances include, but are not limited to pumps, valves, concrete saddles, <br /> • hold-down pads, and vaults. <br /> 513.5 EXCAVATION, REMOVAL, AND INERTING OF TANKS <br /> 513.5.1 Extent of Excavation <br /> Excavation will proceed around the perimeter of the tank in a manner that will minimize <br /> the quantity of excavation while limiting the amount of potentially contaminated soil <br /> mixed with uncontaminated soil. Contaminated and uncontaminated soil will be <br /> segregated in separate stockpiles. The minimum size of the excavation around the tank <br /> will be maintained to allow the workers ample room to complete the work. The workers <br /> will be protected from slides and/or cave-ins during excavation activities using the <br /> procedures outlined in ES-514. Shoring will be used or the slopes of the excavation will <br /> be laid back in accordance with applicable OSHA regulations. If an excavation will <br /> compromise the integrity of a nearby structure, an excavation plan will be prepared <br /> detailing the procedures that will be used to minimize the risk of damaging the structure. <br /> Surface water will be diverted away from excavations to prevent direct entry into the <br /> excavation. Dewatering of the excavations will be limited to that necessary to assure a <br /> safe excavation. All open excavations and stockpile areas will be secured from the <br /> public while awaiting verification test results. <br /> • <br /> 2 <br />