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1 <br />1 <br /> <br />1 <br />1 <br /> <br /> <br />1 <br />1 <br />1 <br />1 <br />~J <br />1 <br />~II II~II~~I~~~~~ ~I~ <br />MEMORANDUM <br />TO: Kathy Welt <br />FROM: Bob Weiner and Alan Mayo <br />DATE: Lune 10, 1998 <br />RE: 6/1/98 Meeting with Dr. lim Burnell, Dr. Harry Posey, and Dave Berry of <br />CDMG <br />Alan Mayo and Bob Weiner met on June 1, 1998 at the offices of the Colorado Division <br />of Minerals and Geology (CDMG) with Dr. Jim Burneil, Dr. Harry Posey, and Dave <br />Berry of CDMG. The purposes of the meeting were: <br />1. To review new analytical data concerning the major ion and isotope chemistry of <br />water in the West Elk Mine (WEM) sump and the Edwazds Portal spring. The <br />new data were not available at the time of Mountain Coal Company's (MCC) <br />presentation to CDMG on January 21, 1998. <br />2. To discuss potential interpretations of the new data with respect to possible <br />sources of the water dischazging from the Edwards Portal spring. <br />3. To try to reach agreement regarding acceptable interpretations ofthe data. <br />The following describes the main points of the meeting. <br />INTRODUCTION <br />We opened the meeting with an explanation of why the new data were important to <br />determining whether or not WEM sump water is or is not a significant contributor to the <br />water issuing from the Edwazds Portal spring. The key points were: <br />1. It is no longer necessary or appropriate to use fault waters as representing the sump <br />water quality for comparison with water from the Edwazds Portal spring. There is <br />now representative data concerning sump water quality. <br />U <br />Z <br />N <br />lL <br />W <br />W <br />Z <br />C7 <br />Z <br />W <br />lL <br />W <br />Q <br />3 <br />H <br />S <br />f~ <br />~~ <br />Since the presentation, MCC has obtained sump water samples from the portion of <br />the sump which would have been the first to be filled. A valved pipe in a horizontal <br />drill hole through the 11 NE longwall panel allows sampling from the lowest point <br />