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NOV-13-2003 11:36 FROIrt-DOL NATURAL RESOURCES 3038663556 T-814 P.003/006 F-364 <br />Page 2 <br />Witnesses <br />DMG staff assigned to testify on these issues: Bruce Humphries, Harry Posey, Allen <br />Sorenson, and Wally Erickson. <br />Summary of testimony for Harry Posey: Mining methods, being standard for this type <br />operation, have no chance to cause ambient receiving stream water quality conditions <br />to change as a result of mining, reclamation or flooding. Mercury released from <br />upstream mines and deposited at the Line Camp site by flooding would be minor and <br />would be controlled by the flood limits and sediment deposition during floods- Mercury, <br />a heavy liquid, would tend to drop from suspension in sediments ponds at the Line <br />Camp pit. <br />Summar of testimony for Allen Sorenson: Mining and reclamation of the Line Camp Pit <br />will not increase hazards or cause off site damage during flooding of magnitudes up to <br />and including the one percent annual chance (100-year) flood event. <br />Summary of testimony for Bruce Humahries and Wally Erickson: The application for the <br />Line Camp Pit demonstrates compliance with the minimum requirements of the <br />Construction Materials Act and Rules and with MLRB policies. <br />Exhibits: <br />• This exhibit list incorporates by reference all exhibits listed either by the Operator <br />andlor the Objectors. <br />• DMG public file for the Line Camp Pit, Permit No. M-2001-001. <br />• Staff presentation farm tc introduce and summarize the application review <br />process. <br />• Air photos of the Dolores River valley, taken by DMG staff an June 25, 2003. <br />All referenced materials cited in the text and in the reference list of pr. Posey's <br />in-house report (May 3, 2001, from Harry Posey to Wally Erickson, entitled: <br />"Review: Line Camp Gravel Pit, Montezuma County, Dolores River, M-2001-001} <br />including: <br />o CDPHE-WOCC CDPS/NPDES data for Tam-Koenig and Twin Spruce <br />gravel pits. <br />o Honor, J.S„ 1987, Origin and Migration of Subsurface Sedimentary <br />Brines, Lecture Notes for Short Course No. 21, SEPM, 247 pages. <br />o Carpenter, A.Q., 1978, Origin and Chemical Evolution of Brines in <br />Sedimentary Qasins, Oklahoma Geological Survey Circular 79, p 60-77. <br />o Safe Drinking Water Act. <br />o Colorado Water Quality Control Act. <br />o CDPHE-WQCC Basic Standards and Methodologies for Ground water. <br />o US BLM, post-1993, Dolores River Basin Water Quality Study; 85 pp with <br />11 plates. <br />o USGS Water Quah[y Data at BedrocK monitoring station, 1995-2001. <br />