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Well <br />Elev. <br />Aquifer <br />Location <br />FPW <br />4780 <br />Ennis Draw <br />Mine <br />DH96 <br />4764 <br />Ennis Draw <br />Downstream from Mine <br />DH122 <br />4814 <br />Ennis Draw <br />Upstream from Mine <br />SMW-2 <br />4803 <br />Reclaimed Spoil <br />Mine <br />AMW-1 <br />4804 <br />Undisturbed Overburden <br />Downstream of B Pit <br />AMW-2 <br />4811 <br />Reclaimed Spoil <br />Downstream of A Pit <br />Well sampling and water levels of subsurface water are taken from Wells SMW-2, AMW-1, <br />FPW, DH96 and DI -1122. Wells are sampled quarterly. <br />The sampling parameters are: <br />o Calcium - dissolved <br />o Iron - dissolved <br />o Magnesium - dissolved <br />o Manganese - dissolved <br />o Molybdenum - dissolved <br />o Sodium - dissolved <br />o Selenium - dissolved <br />o Lead - dissolved <br />o Hardness (as CaCO3) <br />o Alkalinity, total (as CaCO3 to pH 4.5) <br />o Carbonate (as CO3) <br />o Bicarbonate (as HCO3) <br />o pH (pH units) <br />o Specific conductance (mmhos/cm) <br />o Chloride <br />o Hydroxide (as OH-) <br />o Sulfate (SO4) <br />o Total dissolved solids (at 180 degrees C) <br />o SAR (sodium absorption ratio). <br />The Division requires the sealing of drilled holes. Each hole, well, or other underground opening <br />shall be capped, sealed, backfilled, or otherwise properly managed [Rule 4.07.3]. <br />15 <br />