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The estimated water capacity of Pond 6 is less than the original design requirement of <br />1.49 acre feet. However, calculations presented in Volume III, Appendix 13-2, page <br />CDRA-1-1 ii, based on the partially reclaimed and vegetated refuse pile indicate the <br />required water capacity of Pond 6 is only 0.68 acre-feet. <br />Pond 7 collects run-off from the North Decline. The pond was damp during the <br />inspection. Volume III, Appendix 13-2, page NDEC-1 shows that its design water and <br />sediment capacities are 0.23 A-F and 0.03 A-F respectively. It is a dugout pond which <br />must be dewatered with a pump. There is little if any sediment buildup in the pond. <br />Therefore, the pond's capacity is obtained from the most recent pond certification <br />performed by Larry M. Reschke, P.E., on June 1, 1995. <br /> Water Sediment Total <br />Pond 7 - A-F 0.34 N/A 0.34 <br />Pond 8 collects run-off from the South Portal and the RSRDA. The pond had a shallow <br />pool of water at elevation 4744.5 during the inspection. The pond was downsized <br />during 2007. Volume III, Appendix 13-2, page RSS-1 shows that its design water and <br />sediment capacities are 0.68 A-F and 0.22 A-F respectively. On February 13, 2008 the <br />undersigned certified the water and sediment capacities of pond 8 at 0.76 A-F and 0.22 <br />A-F respectively. It is a dugout pond which must be dewatered with a pump. There is <br />and estimated 10% sediment buildup in the pond. Based on this sediment buildup the <br />pond has the following estimated capacity: <br /> Water Sediment Total <br />Pond 8 - A-F 0.76 (0.220.9) =0.2 0.96 <br />Pond 9 collects run-off from the South Portal and RSRDA. The pond was dry to damp <br />during the inspection. Volume III, Appendix 13-2, page RSS-15 & 15i shows that its <br />design water and sediment capacities are 0.33 A-F and 0.33 A-F respectively. The <br />sediment was removed from the pond during 2003 so the pond had a total depth of 9- <br />feet. Sediment (2.6) has accumulated in the pond since it was cleaned. The percent of <br />sediment buildup is 60% (2.6' deep divided by 4.3' maximum depth). Based on this <br />sediment buildup and a 2003 survey of the pond after sediment was removed, the pond <br />has the following estimated capacity: <br /> Water Sediment Total <br />Pond 9 - A-F 0.66 0.15 0.81 <br />-2-