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<br />The quality of Wolf Creek coal water i5 slightly acidic, very hard and saline. <br />Baied on data presented, the water type changes fl'cm caicium/sulfate to <br />scdium/bicarbonate down gradient. Tota' dissolved solids (TG5> values e'<ceed <br />U.S. Environmental Prot?ction Agency (E??.% drinking 'hater iLandares at 311 <br />three Wolf Creek 'dells 3t •/dY1CUi idmpi? Lime;. TvS G'iL2ri3 for liVeiLOCk <br />Uie hd; been filet 3L all 'de!l;, 'dhlle tL; U;2 3i lrrlgd'.lon 'NdL?~ 1i mdfgindl <br />due t0 3dver;2 eff2CL; on many CrJ05. h?i? Crlteri3 d'.;C hd'/? been <br />established by the EP.a. Well 3WC di;piayed *_he Jniy case of elevated iron <br />level; within the 41o1f Cr?ek coal. <br />~s previously Stated, We " 241C i; lOCate7 avwn griCi?:nt, and hds Lhe 1Cwe;L <br />le`/21; Of TGS dnd sUlfdt?, 1n9iC3tin7 Lha: Lhe ;Ui'3t? ii oeing preCipitat?d <br />frJm the water a5 it mev?; dcwn grae'?nL. <br />Wolf Creek/Wadge ;nterburjen <br />Peabody installed one well to monitcr the interburden within the permit area. <br />The interburden consists of 165 feet to 215 f?et of interbedded sandstone, <br />shale, siltstone and coal, thus forminc a relatively impermeable zone bet~een <br />the underlying Wolf Creek coai and the overiyina Wadge ccal. <br />Monitoring data for the 'Nell wd5 Or25e.".t?7 'n "he ~e'~tt dOpllCdt°Cn. DED`_`1 <br />t0 ~dd ter meaSUrementi 3t `his 'dell 'Ne r2 and :2 for dboUL 22 months. Thii dd'd <br />nGi Jnly Show; ver_J llttl2 i2dSCndl fl'JCC;:dL'On, but that Lhe int2rbUrden dt <br />this site is under unc7nfined or water table conditi;ns. This i; not an <br />expected ChdraCterl;tiC beCaU;? bCth the 'vJOlf Creek JJdI dnd the :Wadge Codl, <br />dt 1e35t seasonally, exhibit ditesldn he 3'] 3L Lhl; iit?. iL 15 CC;sibie ti9dt <br />this well has nct been properly comp'etea, or that a cerched aquifer was <br />intercepted by the we'l. ads?d cn dnalvsi> of Lne 'Woif Cr?e!c and 'Wadge cods <br />It is expected that 'Nat?' 'N~thin the int?r'bUrd?n, 3; In Lhe OthE'' Unit;, 'Mill <br />exhibit confined conditions downdip of the Save Cr??< anticlinal dais. <br />~Vo water quality samcting nay b??n acne in the intarburden. <br />Wadge Coal <br />The Wadge coal is the principal seam of interest at the Seneca II-W Mine. It <br />is typically I1 to 13 feet thick, except whey? split by parting;. <br />'he Wadge coal Outcrops to the exit cf the a?emit arcs. These outcrops and <br />Jerhaps a portion of the overbun]en east ~- to ]?rmiL ar?3, are ChoUghL `0 be <br />Lhe ~md,'or sOUfC? Cf recharge t0 Lhe Nd0'y?. _EOt~ t0 Nat?' dna wa:?r ~]U3~~:= <br />are monl[or2d 3t f`ve ilLe; '•altnin dn0 3^;3C?.^.: LJ Lhe o?r'mit area. the <br />Varying 3mCUnts of head m2 diUr?d 3L the;? 'N?~i; 3y'd:n InclCatei Chd'. the T1d]Or <br />ComD,nent of fiGw 15 tJ Che .vE3L. he ?TC'.rL Jf h?a'] w'~hin th? 4~cCg?~ 3: 'n <br />311 the Unit; .n this dY23, 1; a f'JnctlJn '.' ]iiL3nC? from Lhe ''e C'"3 rg2 fir?d <br />(dntiClinal axis) dnd the tyc? of ovei/und?rouroen ore;ent. <br />- 15 - <br />