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FIELD REVIEW <br />SIGNS AND MARKERS: Mine identification signs and perimeter <br />markers were posted in the appropriate locations around the <br />mine. <br />HYDROLOGIC SYSTEM: <br />Drainage Control--The inlet into the Northwest <br />Impoundment is eroding and numerous straw bales placed <br />along the length of the structure indicates this has <br />been a continuing problem. Although the ditch is <br />generally the size shown in the design, the watershed <br />area appears to be much larger. The ditch is designed <br />to transport the runoff from a 5 acre area but it <br />appears the actual area is at least twice that size, <br />DMG has required the company to submit a technical <br />revision to address this problem. <br />The terraces constructed on the reclaimed area are of <br />poor design. The grade on the terraces is too steep <br />and is causing erosion in some areas. It is apparent <br />that some terraces are doing more harm than .good. <br />Consideration should be. given to the removal of some <br />of the terraces which are creating-the-very problem <br />which they were intended to prevent. <br />Rill and gully erosion <br />on the upper reclaimed <br />instructed to submit a <br />the eroded areas. Thi <br />for failure to conduct <br />inspections. <br />was noted is several locations <br />area. The company has been <br />remediation plan for repair of <br />s was included in the NOV issued <br />monthly rill and gully <br />Impoundments--All impoundments were in generally good <br />condition and contained water. The gated spillway on <br />both the upper and lower impoundment was discharging a <br />trickle of water. This was due to leakage of the gate <br />valve. The company should do some maintenance on the <br />valves so that the leaks will not continue to <br />increase. The impoundments were found to have been <br />constructed as depicted on the as-built drawings and <br />meeting the requirements of the regulations. The one <br />exception to this was the Northwest Impoundment. This <br />structure has a single, closed channel spillway. The <br />regulations require either a combination of a <br />principal and emergency spillway or a single, open <br />5 <br />