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-21- <br /> atream duffer Zon?s <br /> There are several areas at the Coal Basin mines where disturbance is less <br /> than 100 feet from a perennial stream. The disturbance at the <br /> preparations plant is less than 100 feet from both Dutch Creek and Coal <br /> Creek. In addition, the existing rock tunnel disturbance and portions of <br /> haul roads A, 3, and D are less than 100 feet from Dutch Creek. With the <br /> exception of the disturbance at the rock tunnel which is separated from <br /> Dutch Creek by haul road B, all the disturbance within 100 feet of Dutch <br /> , 19 Creek and Coal Creek was in place prior to the enactment of the Surface <br /> Coal Mining and Reclamation Act. rim <br /> ` r V <br /> �y 4 Based on the fact that all disturbance less than 100 feet fro.n the <br /> �U perennial streams is existing and the following findings, the Division <br /> japroves a variance from the l0U-foot buffer zone requiren2nt. <br /> 0� <br /> U Pursuant to Rule 4.05. 18, the Division finds that: <br /> 1 ) The original stream channel will be restored. The original <br /> stream channel will not be affected, with the exception of too, <br /> Dutch Creek channel reconstruction near the preparations plant <br /> which is a permanent feature. <br /> 2) During and after mining, the water quantity and quality from <br /> the stream section within 100 feet of the surface coal mining <br /> operations will not be adverst2ly aff, :ted. The runoff from thi <br /> disturbed area at the preparations plant and rock tunnel is <br /> treated, then released. The haul roads •vill riot; aiversely affect <br /> quantity and quality of water in the streams, as discussed in <br /> Section VII of this document. <br /> 3) The reclamation plan provides for the establishment of <br /> appropriate riparian vegetation. <br /> The proposed operation is in compliance witn the requirements of this <br /> section. <br /> VI. Ground 'dater Hydrology - Rules 2.04.5, 2.04.7, 2.05.3(4) , <br /> 2.05. 61,3) and 11 ,�}5 <br /> w <br /> Ground water information reviewed by the Division For comuli-rote can be � )A <br /> found in Secti-)ns III-C and III-5 of Volumes 4 and S. (� <br /> t w <br /> Ground water occurs in both bedrock and alluvial aquifers in cite vicinity qq 1 <br /> of the '-lid-Continent mining operations. 3ehrock strata whicn have the <br /> aotencial to oe labeled aqui;ers •are the Jpper sandstone, the Middle M Chu / <br /> sandstone, _n� '� ollins sandstone and all of the ?esaverde Group ;sere `� 4 <br /> rigure iII-D-1 of the per-,lit application) . The alitivial deposits of Coal <br /> Creek also can be labeled an aquifer. The only !known users of ground <br /> Nater In .o:l Basin haN' all }t,,;)1 ?i 1'i ! ,3 in t'le al lu,iial a^ tNr o, <br /> Coal Creek (see Table 1II-C-3 of the perrn,it application) . mere are no <br /> <noNn users of ,gr,�und ,•rater f rein file 'Iesaverde Group i n the <br /> `/1Clnl7y of z;he "line. ,,iany of tale otner strata are Natar-bearing, buc <br />