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Empire cneryy Corporation must analyze the water level data collecteu from <br />~aallturin•~ gulls and spring elevations from each ayuiFer, i=ron this <br />infonuation, updated liiezo~aetric maps must be submitted for the 4Jhi[e <br />sandstone, ";diddle" sandstone, Twenty-mile sandstone, Trout Creer; <br />sandstone, Yampa River (3ig Bottom) alluvium, anu Williams Fork River <br />alluvium. cacii map snould be constructed +}sing water levels and spring <br />elevations collected on a single day from each aquifer to define the <br />gradient. <br />Cmpire cneryy Corporation must also submit an analysis of the seusorai <br />fluctuation of ground o-,ater levels (quantity) in each aquifer. These <br />analyses are best handled by constructing hydrographs for each aquifer and <br />[hen explaining within the text of the application the variations observed. <br />V1 11L1_W1AL VALLEY 1=LUUIIS - kULLJ Z.Ub.fi and 4.L4 <br />;TIPU~AT1Ur15 - <br />These are concerns that could be stipulated as conditions to the permit. <br />lnfunuation in Che pei°niit application states Cn,it both the Yampa I(iver, <br />valley and the Williams Fork River valley contain alluvial valley floors. <br />troth of these areas are eligiole for the exemption from the requirements <br />of Rules 2.U6.6(5j(a)(i) and 2.U6.o(5)(a)(ii) which can prohibit mining <br />:-r.Urin an alluvial valley floor. vlith the exemption, Empire Lneryy <br />Corporation is allowed to continue ~rininy. However, as explained in the <br />;euruary 4, 1931 memo from Ed 6ischoff to Hndrew P. ~cnissler, rnininy <br />or era~i,;ns must still oe conducted in accordance with perfor~aance <br />stanuarus. Tnis includes portions of the perfur~nance standards applying <br />to alluvial valley floors, hydrologic balance and subsidence. <br />unpire cneryy Corporation has failed to identify the essential hydrologic <br />functions of the llillia~ns Fork or Yampa kivers, anu has not provided a <br />plan for the reestablisiunent of the essential hydrologic functions of the <br />alluvial valley floor •~iithin the affected area following the cessation o` <br />n-~ini~iy operations. <br />In order to deter°mine what the hydrologic systems are that need to be <br />protected, Empire Energy Corporation roust identify those topographic, <br />geologic, pedologic, and hydrologic characteristics that ~naKe the Yampa <br />and i;lilliams Furk alluvial valley floors agriculturally useful. The <br />applicanC s'nall provide a plan to restore those characteristics in areas <br />af;ected uy the a.ining operation or explain t•rhy they ti•+ill not be <br />a~fected. The Division trill require lin~itea extraction benea-_h the i:ig <br />~o[toa ~.ntil tnis inrormatlo:; is suuui[[ed. <br />