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Section 816.71 (a) Continued <br />• <br />within the area where overburden has been removed as explained in Section <br />780.35. This spoil will be hauled to two designated disposal areas which <br />are addressed in Exhibit 9, Excess spoil, and located on the Eckman Park <br />Mine Plan (Map 2). Excess spoil pile No. 1 is located north of the 8050 pit <br />and excess spoil pile No. 2 is located between the 7400 and 770 pits. <br />Energy Fuels has designated two alternatives for the location and <br />construction of pile No. 2. <br />In a meeting on January 7, 1980, the Colorado Mined Land Reclamation <br />Division stated that they clearly preferred alternative excess spoil <br />stockpile 2a. Accordingly, Energy Fuels hereby proposes to construct excess <br />spoil stockpile 2a rather than 2b. <br />These fill structures will be designed so that drainage will not be directed <br />over the outslope and all surface water runoff from the area above the <br />fills will be diverted away from the fills, according to the diversion <br />design discussed under Section 780.21 and 816.43 and shown on the Energy <br />Mines No. 1 and 2 Hydrology (Map 13) Eckman Park Hydrology (Map 14) and <br />Permit Renewal Map 9A, Hydrologic Features/Sediment Control and outlined in <br />Figure 32, Permanent Diversion Structures. Runoff will be directed to <br />sedimentation pond A located at the base of Pinnacle Peak. <br />The fill for these structures will be placed in lifts not to exceed four <br />feet. To avoid the possibility of the excessive voids, compaction will be <br />about 90 percent of AASHTO T-99 density. A detailed geotechnical study of <br />the sites was performed to evaluate and ensure stability. <br />• <br />89-23 816-88(a) Revised C2/22/89 <br />