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The impoundments have the following estimated capacities: <br />IMPOUNDMENT CAPACITIES -ACRE FEET <br /> Water Sediment Total <br />Pond 1 0.44 0.26 0.70 <br />Pond 2 0.41 0.11 0.51 <br />Pond 3 0.42 0.10 0.52 <br />Pond 4 0.50 0.10 0.60 <br />Refuse 0.53 0.14 0.67 <br />Timber 0.37 0.27 0.64 <br />West Mine W-1 0.54 0.25 0.79 <br />West Mine W-2 0.67 0.38 1.05 <br />Coal Stockpile SH-133 0.19 0.16 0.35 <br />Loadout N/A N/A 1.8 <br />Notes: <br />1. Capacities are obtained from the permit document except for the ponds located <br />at the west mine. <br />2. The capacity of the west mine impoundments, Ponds W-1 and W-2 were <br />certified by the undersigned on August 29, 2002. <br />3. The sediment capacity of the ponds may be less than shown in the table <br />because of interim sediment accumulation. <br />4. N/A means not availa~~~o~s~ngoapplicable. <br />a ®0 ~~~p-(~~. <br />To the best of my kno,,AA Vc~°ev~and b`e'lief the impoundments have been maintained as <br />designed and in accor~~~r~e~with the ap,pro~ed plan and applicable regulations. <br />Q o1 4tey <br />w <br />° ~~~~- ~ <br />~ o 0 <br />°~ <br />JailsgE',~,~to ~~r~~~~ Date <br />Colorado~Proteseional Engineer <br />Registration No. 19230 <br />-2- <br />