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Page 1 of 1 <br />Hernandez, Daniel <br />From: Binns, Janet <br />Sent: Thursday, March 05, 2009 3:42 PM <br />To: Hernandez, Daniel <br />Cc: Brown, Sandy; Stark, Jim; Berry, David <br />Subject: Eagle Mine complex SL2 <br />Hi Dan, <br />I was progressing on wrapping up the SL2 for Eagle Mine Complex and revisiting if the Dave's questions had <br />indeed been addressed by the operator. Your e-mail, dated 2/17/2009, stated that Jerry had told you that there <br />are hydraulic seals in the No. 5 mine that do seal the No. 5 mine off hydraulically from the No. 6 mine (East of the <br />Williams Fork River). That was the first I had heard the operator indicate that there were hydraulic seals in the <br />west side of the mine. I searched through the database to find documentation of these seals. Review of Inflow <br />Reports 1984, 1985 and 1986 show where underground seals were installed in portions of the mine west of the <br />Williams Fork (underlying the bond release area). However, since the inflow reports measure flow downdip of the <br />seals, I cannot say that these seals isolate the mine inflows from the rest of the mine. <br />I spoke to Jerry Nettleton on 3/4/2009 regarding documentation of the hydraulic seals in the No. 5 mine that would <br />isolate the underground hydrology underlying the proposed bond release area form the mining areas not <br />considered for release. Jerry indicated that this would take some research and that he would likely have Joe <br />Shoemaker or one of the other staff work on this. Jerry indicated that this was not high on his radar screen at the <br />moment. <br />So, I will continue to work on this. Once we have documentation of hydraulic seals and how they were installed, <br />this should resolve our questions of hydraulic communication within the mine workings. <br />Janet <br />3/30/2009