2010-03-02_REVISION - C1996083 (2)

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STATE OF COLORADO DIVISION OF RECLAMATION, MINING AND SAFETY Department of Natural Resources 1313 Sherman St., Room 215 Denver, Colorado 80203 COLORADO Phone: (303) 866-3567 DIVISION O F RECLAMATION FAX: (303) 832-8106 MINING SAFETY INTEROFFICE MEMORANDUM Bill Ritter, Jr. Governor Harris D. Sherman Executive Director Ronald W. Cattany TO: Joe Dudash Division Director Natural Resource Trustee FROM: Mike Boulay M2 DATE: March 2, 2010 SUBJECT: Bowie No. 2 Mine, Permit No. C-96-083, Technical Revision No. 65 (TR-65) I have reviewed Bowie Resources, LLC's (BRL's) responses to our adequacy questions for TR-65. I have the following remaining comments. With regard to the North Mains Rooms mine plan area, the Division concurs with BRL's response. Regarding the Terror Creek mine plan area, there are adequate monitoring site locations down gradient from the proposed main entries beneath Terror Creek. Monitoring wells should be installed within the coal seam to be mined and the saturated zones/aquifers above the coal seam at a location down gradient from the proposed disturbance. BRL has an approved drill site location P-TC-03-06 approved in 2004 with TR-28. The wells were never drilled but this location is accessible and would provide a good location for a down gradient monitoring site. As indicated in their adequacy response BRL has chosen an alternate location well site (2010-1) as shown on Map 9. Please provide a brief description of these wells including their proposed depth and formation to be completed in and incorporate this discussion into the PAP. 2. Response accepted. The Division concurs, no additional monitoring is necessary in the Rollins sandstone at the west end of the permit boundary where new disturbance is proposed with TR-65. 3 - 4. Responses accepted. Please let me know if you have any questions regarding my review of TR-65. C: Sandy Brown 00 Office of Office of Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines