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~ • • Ill l11111l11 <br />999 IIl1lll <br />ORCHARD VALLEY MINE <br />3ccS. QUARTERLY WASTE DISPOSAL AREA INSPECTION REPORT <br />NEW WEST RIDGE PILE <br />iqq~ <br />Item Y/N <br />i Comments <br />1. Quantity of waste material added [o Y ' Approtdmately 2,148 tons of cob were added to the waste <br /> waste disposal area this quarter? disposal pile this quarter. Reconstruction of the pile <br /> began on August 20, 1992 <br />2. Waste material deposited and compacted Y Exposed gob from previous salvage activity was regrade <br /> in 24" lifts? and compacted in maximum 24" lifts. New material <br /> <br />i added to the pile was also spread and compacted. <br />3. Drainage alterations constructed? Y The terrace on the east side of the pile was regraded <br /> to improve drainage on this side of the pile. The existin <br /> drainage pattern was maintained around the perimeter <br /> of the pile to protect outslopes and direct drainage to <br /> ditches a[ the toe of the pile. <br />4. Present height of waste material? Highest height approximately 63.0 fee[. Elevation <br /> decreased due [o existing exposed gob being spread <br /> out and com acted. <br />5. New bench constructed? N <br />6. Refuse material outslope placed at Y Slopes were checked for proper placement periodically <br /> 1V:2Houtslope? during construction. <br />7. Adequate drainage on top of completed Y i Grading was maintained on top of the exposed gob to <br /> fill? ensure proper drainage from the top of the pile. Pile <br /> reconstructed to reestablish appropriate grade. <br />3. Bench drainage adequate'? Y j Bench drainage was maintained throughout the quarter. <br /> <br />See item 3. <br />i <br />i <br />9. Outslopes covered with 4' non-toxic, Y <br /> non-combustible material? <br />10 . Berms constructed on outslopes? Y <br />11 . Evidence of structural defects'? N <br />