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~~cmcx <br />RECEIVED <br />AUG ~ 1 NO7 <br />Divis~,,. _,,,,,,,ration, <br />Mining and Safety <br />August 31, 2007 <br />Ms. Erica Crosby <br />Environmental Protection Specialist <br />Division of Reclamation, Mining and Safety <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />Re: CEMEX Lyons Mine Permit M-1977-208 <br />Technical Revision No. 8, C-Pit Hydrogeologic Investigations <br />Proposed Technical Revision No. 9, C-Pit Monitoring Program <br />Dear Ms. Crosby: <br />Please find enclosed two bound and one unbound copies of the Brown and Caldwell report C-Pit <br />Hydrogeologic Investigations, which fulfills the requirements of Technical Revision No. 8 to <br />CEMEX's mining permit number M-1977-208. <br />Section 5 of this report, Recommendations, contains our proposal for continued monitoring of C- <br />Pit, which would be Technical Revision No. 9. We have enclosed a check fox $216 to cover the fee <br />fox TR-9. <br />If you have any questions on the report or our proposal for TR-9, please contact me at (303) 823- <br />2115 ox AI Notary of Brown and Caldwell at (303) 230-5485. <br />Very truly yours, <br />~°~. ~U~~ <br />Monica Sowders <br />Environmental Manager <br />CEMEX Lyons Plant <br />cc: AI Notary, Brown and Caldwell <br />Enc <br />Lyons Plant <br />P.0. Box 529, Lyons, CO 80540. USA, (303) 823-2100, Fax (303) 832-2199 <br />