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<br />w <br />-~- <br /> <br />ac-ft/ac disturbance). The Division found that the stcuctucea <br />will still be capable of storing the required sediment, runoff, <br />and mine water. Therefore no actual design modifications will <br />be needed. <br />The Division however, encourages CYCC to pursue a uniform <br />sediment storage criteria either now or in the futuce. <br />H. The applicant's consultant states, within Exhibit 8, that <br />it is important to carefully control surface drainage within <br />the vicinity of the modified highwall and spoils slopes. The <br />applicant has not provided sufficient detailed information <br />regarding the surface drainage above the modified highwall. <br />The applicant should provide additional detail to assure that <br />the highwall area will be properly drained in order to avoid <br />infiltration of surface water which could affect the stability <br />of the final highwall. <br />VI. Hvd[oloaic Balance: Ground Water (2.04.5. 2.04.7 <br />2.05.3(6). 2.05.6(3). 4.05) <br />ftvdroloav Description - Ground_Watec Information <br />Q-Dy 1. The applicant has listed the value of storage coefficient <br />for the overburden aquifer to be 1.7 x 104 (p. 2.04.17, Vol. <br />1). Shouldn't this value be 1.7 x 10-4? The applicant <br />should correct the typographic error. <br />2. The applicant should submit a revised map which shows the <br />location of all monitoring wells to be used in the proposed <br />ground water monitoring program. Currently, Map 9 does not <br />show the location of the Fish Creek alluvial wells, well <br />001-5-10, and well 006-82-38. <br />3. Map 9 shows a "Dewatecinq Well" in the southeast corner <br />of Section 29. The applicant should provide a description <br />regarding the proposed function of this well. It is assumed <br />that this well ie completed in the reclaimed spoils aquifer and <br />will be used to Intercept spoils water before it reaches the <br />proposed portal area. If this is the case, the applicant <br />should provide an estimate of expected pumping rates, expected <br />water quality, and a description of how the water will be <br />handled and where discharge will occur. The probable <br />hydrologic consequences of the discharge of this water should <br />also be analyzed. <br />