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_ ~ = Western Water & Land, ~ ~ <br />April 16, 2004 <br />Mr. Steve Shuey / <br />Colorado Division of Minerals and Geoiogyi/ <br />Departrnent of Natural Resources <br />Grand Junction Field Office <br />=~.,z <br />~~„_ <br /> <br />101 South Thvd Street, Room 30l <br />Grand Junction, CO 81501 <br />RE: Response to Logan Wash Mine (" Permit M-77-424) Technical Revision No. 4 Portal Seal _ <br />Evaluation <br />Deaz Steve: <br />Western Water & Land, Inc. (W WL), agent for Glenn Springs Holdings, Ina (GSFII) and Occidental <br />Oil Shale, Inc. (OOSI), has prepared this letter in response to the Division of Minerals and Geology <br />(DMG) letter of April 15, 2004 which contains a review of W WL's response (Apri19"', 2004) to <br />DMG's response to Technical Revision No. 4 (TTt No. 4) concerning the Research Mine pond seal. <br />DMG agrees to the monitoring period of April to December to be suspended each year after the head <br />has peaked and subsided to zero. Monitoring is to resume in any given year should conditions occw <br />that could reasonably result in a significant increase of mine pool head behind the Research Mine portal <br />seal. <br />DMG futther states that OOSI either 1) demonstrate that no near term short circuiting from the mine <br />pool to the surface is or will occw during the portal seal monitoring period; 2) a monitoring plan that <br />will result in a positive identification of mine pool discharge, should it occur, or 3) a demonstration that <br />the mine pool water meets or exceeds the CDPS discharge permit standards. <br />Due to ow current work schedule, W WI, requests a 30day extension to further evaluate the above <br />potential requirements, or propose an alternative monitoring activity. W WL has implemented the head <br />monitoring program at the Research Mine portal and will continue to monitor the head on a weekly <br />basis through the extension period and as agreed in the second paragraph above. <br />If you have any questions or comments, please contact me at 970-242-0170. <br />sincerely, <br />~--.~ ,B ,~?~ <br />Bruce D. Smith <br />Principal Hydrogeologist <br />ce: Franklin Miller, Glenn Springs Holdings, Inc. <br />Project File <br />Appligtions in Earth Science 743 Horizon Court Suite 330, Grand Junction, CO 87506 <br />Phone: (970) 242-0170 Fax: (470) 242-0270 <br />