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<br />'_. I.> 11- UI v. Ul UI(AUU 4i1 n/.nli I~ • 1 I~..vvmw <br />DEPARTMENT OF NATURAL RESOURCES <br />D. Moi+le Pa>cor, Ezecutlve Director <br />~111N1(:U L:1Nf) RF(:L11l~iA'1'inN <br />423 Centennial Building, 1313 Sherman Street <br />Denver, Colorado 80203 Tel. 1303) 839-3567 <br />iii iiiiiiiiiiiii iii <br />999 <br />__y,~. <br />David C. Shelton <br />November 19, 1980 DiFeCtOf <br />TO: Pete Evans <br />FROM: Jerry Zimpfer '~~ <br />RE: Colorado Westmoreland, June 19th Submittal <br />This memo is to provide a record of my earlier comments concerning CWI.'s <br />permit application, 'these continents represent a preliminary analysis. A <br />more detailed review cannot be performed until additional information is <br />provided. <br />1. The application fails to address the alluvial valley floor requirements <br />of Rule 2. In order for the Division to make a preliminary finding <br />concerning the presence or absence of any alluvial valley floors, the <br />applicant should lrrovide a reconnaissance level investigation as described <br />in OSM's June, 1980 technical guidance paper. I recommend that the <br />reconnaissance investigation consider all those areas within or adjacent <br />to the mine plan area. Any additional information necessary for a <br />formal findiny with regard to the permit application would be confined <br />to the permit area and adjacent areas. <br />2. The applicant should include any information on the hydrologic effects <br />of historic mining activities within or adjacent to the proposed operations. <br />Any such information available would assist the operator in analyzing <br />the probable hydrologic consequences of the proposed activities. <br />3. The applicant's inventory of springs and seeps appears to be limited <br />to the Steven's Gulch watershed. The inventory should cover all areas <br />within or adjacent to the permit area. In addition, the applicant <br />should provide the following information on the springs: source, flow <br />regime, estimated quantity and water quality. Springs should be identified <br />as occurring stratigraphically above or stratigraphically below the coal <br />to be mined, What is the significance of the springs to surface and <br />ground water flow in Stevens Gulch? <br />(cont'd) <br />I ,.~'I. ... II,. <br />