_GENERAL DOCUMENTS - C1981017 (283)

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-21- Streain duffer Zones There are several areas at the Coal Basin mines where disturbance is less than 100 feet from a perennial stream. The disturbance at the preparations plant is less than 100 feet from both Dutch Creek and Coal Creek. In addition, the existing rock tunnel disturbance and portions of haul roads A, B, and D are less than 100 feet Froln Dutch Creek. With the exception of the disturbance at the rock tunnel which is separated froln Dutch Creek by haul road B, all t'le disturbance within 100 feet of Dutch k) Creek and Coal Creek was in place prior to the enactment of the Surface �y ,rC� Coal Mining and Reclamation Act. U V` r V Ah Based on the fact that all disturbance less than 100 feet froln the perennial streams is existing and the following findings, the Division `�0/Lox a roves a variance from the 100-foot buffer zone reg0 re;nent. Pursuant to Rule 4.05.18, the Divisior► finds that: 1) The original stream channel will be restored. The original stream channel will not be affected, with the exception of the Dutch Creek channel reconstruction near the preparations plant which is a permanent feature. 2) During and after mining, the water quantity and quality from the stream section within 100 feet of the surface coal mining operations will not be adversely affected. Thca runoff from tna disturbed area at the preparations plant and rock tunnel is treated, then released. The halal roars; will riot .adversely aFf•act quantity and quality of water in the streams, as discussed in Section VII of this document. 3) The reclamation plan provides for the establishment of appropriate riparian vegetation. The proposed operation is in compliance with the requirements of this section. VI. Ground 'dater Hydrology - Rules 2.04.5, 2.04.7, 2.05.3(4) , 2.U5.6�,3) and a.135 Ground water information revie.ved by the Division For compliance can be w' tXwk � found in Sections III-C and III-E of Volumes 4 and 5. (� Ground water occurs in both bedrock and alluvial aquifers in the vicinity tt i Sk of the Mid-Continent mining operations. 3edrock strata which have the potential to be labeled aquifers are the Upper sandstone, the 'diddle p � sandstone, the Rollins sandstone and all of the Mesaverde Group (see 4 Figure III-D-1 of the permit application) . The alluvial deposits of Coal Creek also can be labeled an aquifer. The only known users of ground water in Coal Basin ;lave all. ,,^r);;rll �t?i ,.f?11; .in 'he ;l luvial arild ar of � Coal Creek (see Table III-C-3 of the pe rriit application) . here are no known users of bedrock ground sater from the Iesaverde Group in the vicinity of the mine. Nany of the other strata are water-bearing, but