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~. ~ <br />-~. <br />April 24, 1981 <br />Pagn 2 <br />• <br />Any water that comae Snto contact with the fi].1 will be captured <br />and treated before it le allowed to leave the site. <br />2. The Air Pollution Control Division deterained that a fugitivn <br />Duet Control permit will be required, and that an application <br />has been recnived. AC the present tide the permit (C13,169(FD) <br />is presently out for public comt`ent. <br />3. Soil and bedrock conditions are good, with re:latlvalp impermeable <br />shale and clsyatooe underlying the site. Sandstone lenses indicat- <br />ed on tha~ore loge am quite irregular and 1[ la doubtful that <br />these permeable formations are interconnected enough to provide <br />e route for seepage. <br />4. Groundwater in the area is at a depth belo4 [be lowest point at <br />which the materibl will be deposited. Cradie¢t of the grouadvater <br />Ss controlled by the structure of [be Btg Bottom Anticline and.ie_ <br />not expected to be a problen. TIn the northern section of trapper <br />Mina ihe.vater table is higher and fly ash and scrubber sludge 1a <br />dot to be dumped in this Brea. <br />5. Monitoring yells evrrocmd the site on all sides, largely due to <br />the strip mining'sctivity adjacent to the fill site. The Monitoring <br />wells are on a schedule of annual, semi-annual or quarterly, samp- <br />ling. This analysis will detect and contamination by a leachers. <br />6. 'Folumes of fly ash end scrubber sludge atateci in the~angineering <br />report should be adhered to. Any increaae in volumes should be aub- <br />mltted to this Department for recommendation:a. <br />7. Fly eah and scrubber sludge spreading compoetion, soil cover (both <br />daily and final) arc in accord with recommended practice. <br />8. The 100 yesr floodplain of Hilllam Fork end 'Yampa Rivers will not <br />be encroached upon. <br />9. Closure plane are Sn accordance with Department regulations and <br />guidelines. It is accepted that the final closure of cfie waste <br />site will be performed in con~vnction with final closure and re- <br />vegeta[Son of the Trapper Hine, <br />10. The Oeily operation plan Se complete. Duet control m9eaurea have <br />not yet been specified by the Air Pollution Control Division, <br />but the operator will be held to those requi.renents. <br />11. Plans for traffic access, routing, road itcproverxnts and handling <br />toed problexs on the site during bad weather are complete. <br />• <br />