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Summary of Water Quality Conditions <br /> Henderson Mill <br /> Metals Radionuclides (2) Sulfate pH <br /> Well Metals concentrations Detectable Range (1) Isotopes near Range 1) <br /> near detection limit Metals (mg/1) detection limits (mg/1) <br /> GW-3 Cd, Mn, Cu, Fe, Pb, - - all isotopes measured 2.5 - 12 Neutral <br /> Hg, CN <br /> GW-4 Cd, Cu, Fe, Pb, Hg Mn 1 .26 - 3.27 all isotopes measured 67 - 110 Neutral <br /> CN <br /> GW-5 Cd, Cu, Fe, Pb, Hg Mn 0.09 - 0.23 all isotopes measured 58 - 68 Neutral <br /> CN <br /> GW-6 Cd, Cu, Fe, Pb, Hg Mn <0.02 - 0.16 all isotopes measured 43 - 57 Neutral <br /> CN <br /> GW-7 Cd, Cu, Fe, Pb, Hg Mn <0.02 - 0.22 all isotopes measured 29 - 33 Neutral <br /> CN <br /> 1) Range from six quarterly monitoring events from 10/93 to 12/94 <br /> 2) Radioactive isotopes measured: Pu-238, Pu-239, Cs-127, Ra-226, Ra-228, Sr-89, Th-230, Th-232, Tritium <br />