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An underground rock filter was installed along the six-inch water line at the location shown on map 24, The rock <br />filter is needed to help filter the water discharged from the underground mine before it is placed into the million <br />gallon tank. <br />The rock filter will be constructed by excavating the existing spoil material to a depth of approximately IS - 20 feet <br />and placing a gravel pack in the excavated area. Prior to excavating the spoil material the topsoil will be stripped <br />MR03-183 2.05-212 04/30/03 <br />