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~~~ <br />-EA~ODI/ COLL COYtiMY <br />w..~«n WrMMn <br />E~ECE~~~` <br />"c B 1:1 193 <br />+~iwED lAnn <br />~ECLAMaTtOr: ~~v~s:0~ <br />February 9, 1990 <br />Ms. Kathy Begej <br />Colorado Mined Land <br />Reclamation Division <br />Department of Natural Resources <br />1313 Sherman Street <br />215 Centennial Building <br />Denver, CO 80203 <br />Dear Ms. Begej: <br />1700 SuRn Vw <br />F,~pp~fl. N,Sb,! B6U71 <br />IW2) 714R~(l <br /> <br />Tne following is a summarization of our discussion of <br />January 26, 1990 concerning what additional monitors would <br />be necessary to further define baseline and during mining <br />hydrologic conditions at Peabody's Seneca II-4! and Yeast <br />properties. <br />Seneca II-4! <br />1. Easeline water flow and quality in the C05 pond <br />(Figure 1) drainage at the point of the proposed pond <br />is requested. If true alluvium exists within a <br />mile distance downstream of the pond, an alluvial <br />monitoring well within the mile reach is r>_quested. <br />2. Since baseline flow and quality data in the 009 and <br />010 (Figure 1) pond drainages has previously been <br />obtained, it will suffice for the permit application. <br />However, if true alluvium exists within a mi-ie <br />distance downstream of the ponds, alluvial monitorine <br />vrelis within these mile reaches are requested. <br />,,. A stream monitorine station on Sao_e Creek below the <br />009 pond confluence is requested. <br />:'. lri the Ii-C.~ SOUth arEa, overburden, COdI, ane <br />unoerburden monitorine wells for the ootential Wadas, <br />Sage Creek, and k'olf Creek pits are requested. Water <br />level, water chemistry, and aquifer characteristics <br />for one well completed in each unit in each cf the <br />proposed mining areas was recommended as an approacn <br />_ _ _ tp determininq_ the significance of th~sF.uni*_s as__ <br />dgUlfers and the pctentlal TOr Vertical leakance <br />oetween .the_ urns. Ccncerns -regarding go~:noradient -- <br />