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<br />Bziating volume (ac-ft) = 83.8 <br />Backfill volume (ac-f t) = 62.5 <br />Sediment Yield (ac-ft) = 19.4 <br />Final Storage volume = 1.9 ac-ft <br />Water storage rights are not required for impoundments with <br />storage volumes equal to or less than 2.0 acre-feet. <br />f. The spillway, as shown on the Permanent Sediment Control Plan, <br />Map 20, is not drawn to scale. This should be corrected. <br />EBSPONSS: <br />Hap No. 20a, Permanent Sediment Control Plan, has been revised <br />accordingly. <br />7. If Middle Creek Mine Detention Pond is to be evaluated as a <br />permanent pond, the following additions/clarifications need to be <br />provided. <br />a. The total sediment yield for this pond seems high (Table A). <br />See comment 6.e., above. <br />RBSPONS6: <br />As noted in the response to co®ent 6.e., the sediment yield <br />calculations in Table A of Szhibit 3 are believed to be correct. <br />b. The capacity of this pond is greater than 2.0 acre-feet and <br />permanent water storage rights are required. <br />-32- <br />