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it <br /> IV. Summary <br /> In summary, the quarterly ground-water monitoring conducted during the last six years has provided <br /> the data with which to characterize ground-water conditions beneath the Teichert parcels and <br /> adjacent areas, prior to and since the commencement of mining_ Observed static ground water levels <br /> have ranged in depth from 75 feet in shallow wells to the north, to 260 feet in deep wells in the <br /> central and southeast portions of the area. Shallow ground water has typically fluctuated less than <br /> three feet through the monitoring period and consistently flowed toward the southeast. Deep ground- <br /> water levels have been lower and have fluctuated more than shallow levels, apparently in response to <br /> pumping of local deep irrigation and production wells. Ground water within the greater perimeter of <br /> r, the permitted mining area has been found to have elevated hardness and EC values. The general <br /> mineral quality varies with depth: shallow ground water is of a sodium/calcium bicarbonate/chloride <br /> quality while deep ground water is of a sodium/calcium bicarbonate/sulfate quality. There are <br /> elevated nitrate concentrations in the shallow and deep ground-water zones that appear to be <br /> n <br /> indicative of historical agricultural land use in the area. During the last five years of sampling, <br /> coliform bacteria have consistently been absent from the two domestic wells. Overall, no changes in <br /> ground-water levels or quality have occurred that are attributable to the approximate two years of <br /> t` aggregate mining conducted to date by Teichert. <br /> © LUHOORFF 6 SCALMANINI <br /> C ON E U L T 1 N G E NSI NEER E <br /> � J <br />