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i <br /> I <br /> 9 <br /> I <br /> I <br /> IV. Summary <br /> i <br /> In summary, the quarterly ground-water monitoring conducted during the last four years has <br /> provided the data with which to characterize pre-mining ground-water conditions beneath the <br /> Teichert parcels and adjacent areas. The observed static ground water levels ranged in depth <br /> �. from 75 feet in shallow wells to the north, to 260 feet in deep wells in the central and southeast <br /> portions of the area. Shallow ground water typically fluctuated less than three feet through the <br /> monitoring period and consistently flowed toward the southeast. Deep ground-water levels were <br /> lower and fluctuated more than shallow levels, apparently in response to pumping of local deep <br /> irrigation and production wells. Ground water within the greater perimeter of the permitted <br /> mining area has elevated hardness and EC values. The general mineral quality varied with depth: <br /> i shallow ground water was of a sodium/calcium bicarbonate/chloride quality while deep ground . <br /> water was of a sodium/calcium bicarbonate/sulfate quality. There are elevated nitrate t <br /> concentrations in the shallow and deep ground-water zones that appear to be indicative of <br /> historical agricultural land use in the area. Coliform bacteria testing identified the presence of the <br /> bacteria in one domestic well approximately three and one-half years ago; subsequent disinfection <br /> i <br /> of the well structure and surface facilities have successfully eliminated the bacteria. <br /> i <br /> ! <br /> I <br /> S{ � <br /> i <br /> ! <br /> I <br /> /� LLff--E L�C�I�F=F' E. SCALfv1ANIN1 <br />