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<br />-55- <br />The applicant proposes to verify the projections of probable hydrologic <br />consequence due to subsidence through a program of ground water and <br />surface water quality and quantity monitoring. Proposed alluvial and <br />bedrock monitoring wells and surface gauging installations are depicted <br />on Map 9a of the permit application. The timetable for monitoring is <br />presented on Table B within Exhibit 10a, entitled "Hydrologic Monitoring <br />Plan". <br />The permit revision application is in compliance with this section. <br />XXI. Special Categories of Mining - Rules 2.06, 4.22 through 4.29 <br />A. Variances for Delay in Contemporaneous Reclamation Requirements in <br />Combined Surfate and Underground Mining Operations. <br />The applicant requests a variance for delay in contemporaneous <br />reclamation requirements for the combined surface and underground mining <br />operations from the final pit of the Energy No. 1 Mine. It is from this <br />highwall of the existing surface mine pit that the applicant proposes to <br />portal into the Foidel Creek underground mine workings. H variance from <br />contemporaneous reclamation of the final pit at the Energy No. 1 Mine was <br />granted previously, as a portion of Permit No. 79-177. An increase in <br />the variance area is requested by the applicant, encompassing the Tength <br />of the final pit and a pit modication in the proposed portal area, in <br />order to permit development of the Foidel Creek underground mine's <br />portals and its associated surface facilities. <br />The applicant intends to modify the existing highwall and spoils slope <br />configurations within the Energy No. 1 Kline pit, in order to increase <br />their respective slope stabilities. The applicant intends to utilize the <br />excavated spoil and highwall materials to partially fill the existing <br />final pit of the Energy No. 1 Mine. Approximately 70,000 cubic yards of <br />spoil will be graded into the adjoining pit opposite the proposed Foidel <br />Creek portals. Regrading will reduce the existing spoil slope to a 2:1 <br />(horizonta] to vertical) or less slope gradient. The existing highwall <br />will be modified to create the proposed portal bench. The proposed <br />highwall excavation will result in the deposition of an additional 68,000 <br />bank cubic yards of spoil material within the final Area 1 pit of the <br />Energy No. T Mine. Exhibit 8 of the permit application and Maps No. 3b, <br />llb and 15b depict the applicant's plans to reconfigure the portal area <br />slopes. <br />Stability analyses have been completed for alternative configurations of <br />both the highwall and the existing spoil slopes within the vicinity of <br />the proposed Foidel Creek Mine's portals. The applicant proposes the <br />installation of spoil slope and highwall surface diversion ditches to <br />prevent deleterious saturation of the slope materials and to assure <br />improved surface slope stability. <br />The southwestern Lerminus of the unreclaimed Energy Mine No. 1 pit will <br />serve as the disposal site for underground development waste rock. The <br />