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<br />Two primary concerns identified by the Division ds a part of the PR ~l review <br />'xere in regard to potentially acid forming mater`ais associated with the <br />Lennox COdI S2dm dnd eXC2SSive C13y COn t?nts d5i0Cidted xl th sh31? Strdtd <br />overlying the ~enncx. The Division reDUeSted P?=jod/ t0 Or?Od.'? 3 10011 <br />samclinq plan inc mitigation Dld'1 fCr dre35 'whe~2 th? '_enf10< wCUi7 G? SpOlie7, <br />and for ar?is where the Lennox would pot?ntially 6e =coosad ti, nighwail <br />redUCtiOn. A mOr2 de tailed mltigdtlGn Oldn fCr 3r?di Cr 2.<Cciiive CidV <br />cent?nt was also reDUested. <br />Peabody submitted an acceptable samDiing plan to oe ?mployeD in areas <br />potentially affected by Lennox 50C11 Or CUICrCp. .he p~dn Ci'is fJr samples <br />lJ be tdk?n on 5G0 foot cen~e~s witiin C..^.2 Des~crd'.?: 3r?3, inD 3ndlyZed fOr <br />Cad'/ COnt?St, pH, dnd dCld-bale pCL?ntidi. iu~tigat'CG 'x`:11 inCi'JC2 dCditlond~ <br />SdmOling t0 define Lhe dr?d Of COnC?rn, de?D riDC'ng Gf d`?ds Jf UniUlLdble <br />Cady contact and amendment Of bUrl31 Cf 3CiG PCr.Tl r;g .Pd'?r131 Wl tip 3 m1nlmUm <br />of four feet of suitable material is cover. <br />Nitrate-nitrogen levels wet? ?xcesiive in 14;. of the overburden corn samples <br />takes at the Seneca II-W Mine. The locations of the .holes which exhibited <br />?levdted leveis were distant from one another. rurthermor?, the stratigrdohic <br />io~ation of the ele'/ated nltrat?-nitrogen samp'ei ara not corn?1dLiv?. Du? Lo <br />the Vertical dnd hOriZOntdl d'StdnCes be^.4een iCCdt'On5 CJntdininC ?1?'/d Led <br />~, nitrate-nilrOD?~ 1?v21S, percolating jrJUnd 'x2*.?." 'x';l rAL d? 3dvers?~y <br />affected. The dilutional effects o~ 3 Dr?;ict?D sDJ~ls aaui'a~ ;Would buff?r <br />the concentration of nitrate as nitrocen Dy Lhe time Ln? iquif?r Discharges to <br />the surface system. <br />The proposed operation is in comDiiance '.with lh? reuuire~nea,s Jf this section. <br />V. Ground Water Hvdrolcav - .Ru!2s ?.04.x, 2.04.;. ?.~?5 c;a~ and 4.')5 <br />Tdb ) Of the permit re'Ji51Cn 3CO11CalICn CCn L3'ns jds? " n? jrC'J ~~] '.V3 t?~ <br />hydroicey information dnd dI5LU5s1Cn for the expdnC?D ~?`mgt d`?d, ds well ds <br />suostantiaily rewritten mat?rill from the original perm `•l application. Tah 15 <br />describes the operational ground water monitoring program. Eight new alluvia': <br />wells have been added to the monitoring program, and only minor changes in the <br />frequency or" monitoring of existing wells ha'/e been proposed for PR ltl. <br />Ground water studies in coniunCtiCn with the Seneca ii-41 Mine site have been <br />cent?ntrat?d in the Uaper Mesaverd? Group and 311uv°a! iauif?r;. <br />SD?C'f1C311y, dgUlfer ChdraCt?,^:5t1C5 dinC%Cr 'xat?' ]Ud' Li 3'1d'.'/52: h3`/o jeer <br />0e rform?~ In Lhe SJC iT Cf2ek COdI, WCIf _'?ek;'.JaCy? _,_= DUr:?n, 'rid G3' CCd' <br />Waage coal overburden, and the 4ubb?rion ;uicn dlluii.lm. QudnLit. and Dua ".t! <br />data have 3150 0een collected frCm t?~ sDringi and 5??.'S In 3..^.d 3~~'iC?nt tC <br />the 0ermit area. <br />The S?nevi II-W Nine permit area 1125 cr, the western plank of the Sa,e Creek <br />Anticline, a local Structure locai?d 'xithin the me r? ~?g~ond' Sand itiash <br />Basin. Tne Sage Cre?k Anticline is t:ncugnt to co~tr;l ~ccil ground wat?r <br />fiCW, 3S drt251dn held 1nCr?35e5 'd"f1 d~StdnC? frJm .n2 doL~C~In31 dXiS. <br />- 13 - <br />