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r <br /> procedure also prevents unnecessary pumping of the water resource <br /> by release to the surface environment. As in the case of the <br /> withdrawal , such a system demands a clear delineation of the <br /> variability of permeable zones and contaminant levels within the <br /> ground water regime. Such techniques have been widely utilized <br /> in the in - situ mining industry far mining of uranium from <br /> shallow , water-bearing zones. A wide history of withdrawal and <br /> reinjection operations has thus been developed. <br /> 3. - Ground Water Monitoring System. Regardless of the <br /> ground water contamination migration program ultimately employed <br /> at the site , Marley is committed to the construction and long <br /> term operation of a ground water monitoring system designed to <br /> insure that improvement of ground water quality is achieved and <br /> maintained by future remedial actions. Such a monitoring system <br /> may incorpporate existing monitoring wells , the early warning <br /> leak detection systems described earlier, and /or new monitor <br /> wells to be installed as part of the definitional phase. <br /> C. Soil Contamination Mitigation. <br /> 1 . Definition of Natural Background Levels of <br /> ? "Contaminants " in Native Soils. Key to agreements reached <br /> between Marley and the regulatory agencies pertaining to <br /> mitigation of site soil contamination will be a mutually <br /> } acceptable definition of natural background levels of suspect <br /> contaminants in the native soils. Marley has already collected <br /> some regional soil boring data ; additional soil data will be <br /> i 24 <br />