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MINE ID # OR PROSPECTING ID#: M-2003-016 PAGE: 2 <br />INSPECTION DATE: 3-14-08 INSPECTOR'S INITIALS: ACS <br />The Division of Reclamation, Mining, and Safety (DRMS) is currently <br />reviewing two revisions to the Heit Pit permit. Revision SR-O1 was <br />submitted to reduce the amount of required bond based on the completed <br />installation of the slurry wall. Revision TR-04 was submitted to <br />permit the dewatering sediment trap installed just outside the <br />northwest corner of the slurry wall. This inspection was conducted to <br />facilitate review of the revisions and as a general monitoring <br />inspection. The following areas were inspected. <br />Main Gate <br />There is no permit sign posted at the pit access point. See PB-1 on <br />page four of this report. <br />Pumping Facilities <br />A dewatering sump has been excavated in the northwest quadrant of the <br />pit. A four inch diesel pump removes water from the sump and <br />discharges to the sediment trap constructed outside the northwest <br />corner of the slurry wall. Discharge from the sediment trap flows to <br />Little Dry Creek. <br />A water supply pond has been excavated into the remaining ground water <br />inside the slurry wall in the south central area of the pit. This pond <br />will be used to supply water for washing of aggregate. Since <br />consumptive use of water is occurring, the Office of the Sate Engineer <br />is being copied this report. <br />Sediment Trap - Northwest Corner <br />A sediment trap for cleaning water pumped from the dewatering sump has <br />been constructed just outside the northwest corner of the slurry wall. <br />The trap is located a short distance west of the location previously <br />approved by DRMS; the location adjustment was made to avoid building <br />the trap over a gas line. DRMS will add fifteen cubic yards of grading <br />work and five cubic yards of topsoil work to the estimated reclamation <br />costs to incorporate a cost for reclaiming the trap into the amount of <br />required bond. <br />Perimeter Underdrain <br />An underdrain has been installed around the south and part of the west <br />legs of the slurry wall in order to prevent ground water mounding <br />against the slurry wall. The underdrain was approved by DRMS through <br />technical revision TR-03. The underdrain discharge is midway along the <br />west leg of the slurry wall. From the discharge point, underdrain <br />water will flow overland and through a series of small wetlands to <br />Little Dry Creek. The underdrain was not flowing at the time of the <br />inspection. <br />Structures <br />When the Heit Pit was permitted by DRMS, there were a number of farm <br />