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7.0 PSSA STORAGE <br />amec <br />The water balance completed for the Phase 5 VLF, as presented and approved in <br />Amendment No. 9 to Office of Mined Land Reclamation Permit M- 1980 -244, indicates that <br />the storage requirement for the Phase 5 PSSA below elevation 9,765 feet is 73.1 million <br />gallons (MG). Note that the original design of the PSSA had a capacity of 74.5 MG; however <br />the VLF water balance indicated the maximum required solution storage (including all <br />contingencies) is approximately 53 MG (elevation 9,759 feet). Therefore, the constructed <br />capacity is 140 percent more than is required. A stage- storage curve for the Phase 5 PSSA <br />is presented in Figure 5. <br />AMEC Earth & Environmental, Inc <br />2000 S Colorado Blvd 2 -1000 <br />Denver, CO 80222 <br />Tel 303 - 935 -6505 <br />Fax 303 - 935 -6575 www.amec corn 36 <br />