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r ~ III IIIIII IIIIiII III <br />999 <br />• ORCHARD VALLEY MINE <br />QUARTERLY WASTE DISPOSAL AREA INSPECTION REPORT <br />NSW WEST RIPGE PILE <br />ITEM YES NO COMMENTS <br />1. Quantity of waste material added to Mining conditions have gotten <br />waste disposal area this quarter. worse; we are losing cao rock, <br /> which is the material being <br /> hauled to the gob pit; largely <br />See attached calculations.) shale with some intermixed coal <br /> Material was added in 24"lifts; <br /> water was added to material be- <br />t. Waste material deposited and compacted fore compaction with vibratory <br />in 24" lifts? X com actor. <br /> East 6 west site ditches recon- <br /> structed 6 rip-rapped to meet <br />3. Drains a al[eratins constructed? X 100 ear flood criteria. <br />4. Present hei ht of waste material. Avers a south side ht, is 82'. <br /> Have started on the 2nd bench <br /> level of pile b construction of <br />S. New bench constructed? draina a ditch is underwa . <br /> Presently reconstructing out <br /> slopes to bring them into de- <br /> sign specifications at 1:2 <br /> slope; construction is aprx. <br /> 3/4 complete, soil placement on <br />6. Refuse material outslope placed at outslopes has been temp. halted <br />1V:2H? X due to freezin and wet weather <br /> Aprx 1'of soil was placed in <br /> bottom of drainage ditch on 2nd <br />7. To of com leted fill at 5%? X level and com acted. <br /> No erosion. <br />8. Bench draina a adequate? X <br />9. Areas covered with 4' non-toxic non- 9" topsoil. <br />combustible material? X 3'3" subsoil. <br />10. Berms constructed on outslo es? X <br />11. Evidence of structural defects? X <br /> Subsoil b topsoil has been re- <br />12. Topsoil adequately salvaged 6 stored? moved from slopes S stockpiled. <br /> Approx 1' of subsoil has been <br /> placed on 2nd level outslope <br />13.Trash bein removed? X approx. 10' high to reduce the <br /> chance of s ont. combustion <br /> Compaction tests done by the <br />14. Additional comments? X nucular au a method. <br />Inspector: ,~,~ /~ ~~+'~~_~Ll- Date of Inspection: 3/90 <br />ohn H. Menke, III, Sr. Engnr. Tech. <br />I hereby certify [hat the construction of the waste disposal area was done under my direct <br />supervision and is constructed as per the current Colorado Mined Land Reclamation Permit re- <br />quirements. <br />~~ o `~~L 7~9 0 <br />Robert T. ohnson, Senior Mine Engineer Date <br />