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Item 8. <br />Please include the results of sampling of TCS-1 (see AHR, page 49). A comment that <br />power was unavailable was the only entry in the report. <br />The demolition of an adjacent house removed power from the site. During demolition <br />the well sustained damage. Sampling was attempted using a generator but the well was deemed <br />not functional. TCS-1 was refurbished in the fall of 2005 and sampled on 10/20/05. This data <br />will be submitted in the 2005 Annual Hydrology Monitoring Report. <br />Item 9. <br />As related to the Annual Hydrologic Report, but specific to the PAP, please review the <br />prediction of probable hydrologic impacts to Trout Creek as presented in the PAP on pages <br />2. SA-7 (TDS values as high as 1,186 mg/1) and an annual average TDS of 196 mg/l as <br />anticipated on page 4.6-61(a). The apparent conflict in predictions has been a source of <br />confusion during this review (as it was in 1996). If warranted, please submit a minor revision to <br />page 4.6-61 a of the PAP as may be appropriate. <br />This item is currently being researched and a response will be forthcoming. <br />Item 10. <br />Post mining spoil water was expected to have average TDS values of 3, 000 mg/! (PAP <br />page 2.5-96). However, discharges from sedimentation ponds fed by spoil springs have TDS <br />values in the 4, OOOs, and at times approach 5, 000 mg/Z. Water from the spoil aquifer would be <br />expected to have TDS Zevels that correspond to the spoil springs. Values ofTDS in monitoring <br />well WR-1, a spoil sampling point, have ranged as high as 4570 mg/Z to date. Please review this <br />prediction of probable hydrologic impacts and revise as appropriate. <br />This item is currently being researched and a response will be forthcoming. <br />Please contact me at (307) 742-0031 ext. 19 or at bheesen@wwcengineering.com with <br />any questions or continents you have regazding this matter. <br />Sincerely, <br />/~ r,/rt,tlt` <br />i <br />Beth A. Heesen, P.G. <br />Project Geologist <br />TNS <br />Enclosures <br />cc: Steve Leach <br />K \P&M Coal\EdnaMine\1999-144E\Repons\Anwal Hydmloyy RcportUdequacy Response\091405AdcquaryyRCSponse.doc <br />