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07-29-1996 03~04PM FROM: E. STOUER 8 RSSOCIATES <br />PA= TRA178![I1TAL <br />David Harry Paqe 2 <br />TD DMG P.02 <br />• <br />July 29, 1996 <br />bearing zones. Groundwater within the Meaaverde formation has <br />been found to be of low quality, and limited extent, occurring <br />only as isolated perched water bearing zones. These zones are <br />not currently exploited and, because of their limited extent, <br />bane no potential for future development. Therefore the <br />perched water bearing zones should not be considered a <br />resource that would require monitoring. <br />3. See above discussion. <br />J 4. The DMG questions how one Rollins Sandstone well, DH-34H, <br />which is located neither upgradieat nor downgradient of mining <br />can be utilized as a monitoring well. Monitoring the Rollins <br />Sandstone should only be required if the aquifer could <br />potentially be impacted by mining. page 2.04-Z5 notes the D <br />coal seam is located 400 feet above the Rollino Sandstone and <br />is separated by sandstones, ailtstonea, clays and coal seams. <br />The PHC section of the permit indicates the mine may impact <br />the perched water bearing zones above the miss workings. No <br />mention is made of the Rollins Sandstone in the PaC section of <br />the permit because of its relationship to the coal seam to be <br />mined as explained on page 2.04-25. <br />J5. The DMG is concerned about BRL•s ability to effectively <br />monitor the upper perched water bearing Zone. See the <br />dlacusaion above regarding the need to monitor the perched <br />// water bearing aonea. <br />V6. The DMG indicates that in my letter to the Dl{G dated April 11, <br />1995, concerning the April 7, 1995 meeting with the DHG, the <br />DMG recommended that three samples be taken from each bedrock <br />well for full suite analysis. The sample frequency was to be <br />April, July and October. The recommended sample frequency was <br />followed during the 1995 baseline monitoring period except no <br />sample was taken duriaq April because most of the site wen <br />inaccessible (ref. Volume III, Sxhibit 3). The monitoring <br />frequency presented on page 2.05-72 fa for the post operation <br />phase of the project, not the baseline monitoring phase. <br />J7. The DMG indicates that in my letter to the DiHG dated April 11, <br />1995, concerning the April 7, 1995 meeting with the DHG, the <br />DMG recoaaaeaded that field parameters be taken on the springs <br />and seeps monthly. The recaa®ended sample frequency was <br />followed during the 1995 baseline monitoring period (ref. <br />volume III, Sxhibit 3). Additional springs and seeps wore <br />identified and monitored during the year. The monitoring <br />frequency presented on page 2:05-72 is for the post operation <br />phase of the project, sot the baseline monitoring phase. <br />8. The DMG indicates that in my letter to the DHG dated April li, <br />1995, concerning the April 7, 1995 meeting with the DMG, the <br />