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The Bench sediment pond contained water but was not discharging <br />at the time. The Lower pond was dry. It was noted that the as- <br />built drawing of the Bench pond showed a 6 inch pipe coming from <br />the upper bench. This pipe does not exist. Otherwise the <br />sediment ponds were basically constructed as shown in the <br />drawings. <br />Impoundments: The only impoundment at the mine and loadout are <br />the sediment ponds discussed above. <br />Discharge structures: The three impoundments discussed above plus <br />the under drain for the waste disposal area are designated as <br />discharge points. None of these were discharging at the time of <br />the inspection. <br />Surface water: No surface water monitoring sites exist at this <br />mine. <br />Ground water: There are two wells which are monitored quarterly <br />for conductivity, pH, level and temperature. They are monitored <br />semi-annually for full suite parameters. <br />The Caldirola #2 well has a steel casing at the top with a metal <br />plate for a covering. The metal plate has a hole in it so does <br />not provide complete protection from contamination. The well is <br />drilled into the abandoned mine shaft of the same name. Since <br />the town of Coal Creek obtains water form this same source, it is <br />recommended that the well be sealed and locked to prevent any <br />contamination. As is, it is highly unlikely that anything except <br />rain water and snow melt would enter the well if left alone. <br />The TPW-1 well was covered but not locked. A plastic casing is <br />contained inside a metal pipe. The plastic casing had been <br />shattered the previous fall by a rifle bullet and was not <br />repaired. The Company will repair the plastic casing and will <br />provide a correction factor to DMG for water levels taken since <br />the damage occurred. DMG also requested that the location of the <br />wells be shown on a map. <br />Discharges: None observed during this inspection. <br />9 <br />