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_ cracks developed to the Surface (Cunrud 1976), surface runoff"could be <br />diverted directly into the mine. The location of mining panels beneath <br />• an ephemeral stream and a stock vrater reservoir in the west half or' <br />section 18 could cause fracturing that would disrupt the flo•:r ter.,porar- <br />" ily. However, on completion of mining, cracks at the surface would fill <br />with sediment and infiltraticn at the surface would be reduced. It is <br />" stressed that this effect should be temporary and that C4iI must replace <br />the water supply of all o•:rners of interest in real property Yrho obtain <br />all or part of their water supply from anderground or surface sources <br />where that supply has been affected by contamination, diminution, or <br />interruption proximately resulting from coal mining operations by the <br />company (30(CFR): 717,17(1)). <br />The proposed action would not increase population in the area. " <br />Therefore, there vrould be no impact on municipal ~•rater and se~•rage treat- <br />ment facilities in the area. <br />There is no dancer of flash flooding in the area of tr:e ventilation <br />shaft, the only surface facility associated with the proposed action. <br />The structure o-rould be located cn steep side slopes a;:ay from collies or <br />drainage channels. There are no alluvial valley floors or floodplains <br />on this tract. <br />Soils <br />_ Soil impacts from the proposed action would be minimal. Cor.struc- <br />• t10n and OPeratl0n OT mine SUrfdCe faCllitle5, 1nCreaSed USe Of the <br />refuse disposal area, and surface subsidence would be t'^.e ma,;or sources <br />of soil impacts. <br />The construction and operation of an intake ventilation shaft mould <br />affect approximately 1.6 acres, including the access read to the shaft. <br />Topsoil ~•;ould be removed from the disturbed area around t"= intake <br />ventilation shaft and stockpiled in compliance with 30(CFR): Si7.22- <br />817.23. Erosion rates could increase dramatically until the disturbed <br />area is leveled by regrading. The access read would be constructed in <br />compliance with 30(CrR): 817.161-817.165 to minimize soil erosion. <br />Regrading, redistribution of the topsoil, and reveaetaticn of the dis- <br />turbed areas ~•rould be accomplished during the first normal period of <br />favorable planting conditions follo::ing mine abandonment in the manner <br />outlined by 30((C:R): 817.24-817.25, 30(CFR): 817.111-817.117, and <br />30(CrR): 817.166. <br />Use of the refuse disposal area follotiring the guidelines of <br />30(CFR): 817.71 would cause minimal soil erosion. <br />Soil disturbance as a result of subsidence would be minor vrhere no <br />cuts were exposed. However, localized slumps could expose cuts of bare <br />• <br />