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~~L <br />BIASIAND, eOUCK & LEE. INC. <br />eng/nears &sclentls is <br />Transmitted Via US. Mail <br />November 22, 2004 '~ <br />Mr. Larry Oehler <br />Environmental Protection Specialist / <br />Division of Minerals and Geology <br />Department of Natural Resources <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />Re: Holcim (US) Inc. Portland, Colorado <br />Quarterly Groundwater Monitor' Report <br />DMG Permit No. M-1977-344,'fechnical Revision No. 6 <br />BBL Project # 254.50.002 <br />Dear Larry: <br />Please find enclosed rivo copies of the final Holcim (US) Inc. quarterly Groundwater Monitoring <br />Report, which summarizes analytical results for a groundwater sample collected at monitoring <br />well MW-10 on July 9, 2004. This completes the groundwater monitoring required to establish <br />ambient groundwater conditions at the site. Once ambient groundwater criteria are established by <br />the Division of Minerals and Geology, Holcim will commence with annual groundwater <br />monitoring per the December 2002 Groundwater Monitoring Plan for the Site. <br />Please contact me or Mike Gan[enbein at the quarry if you have any questions. <br />Sincerely, <br />BLASLAND BOUCK & LEE, INC. <br />AI Notary, P. . <br />Associate <br />Enc. <br />cc: Mike Gantenbein, Holcim (US) Inc. <br />Shane Allen, Holcim (US) Inc. <br />Rashila Tong, Holcim (US) Inc. <br />RECEIVED / <br />NOV 21 2004 ./ <br />Division ~f Minerals and Ceelo9y <br />14142 Denver West Parkway • Suite 350 • Golden. CO 80401-3190 <br />Tel (303) 231-91 15 • Fax (303) 231-9571 • www.bbl-inc.com • offices nationwide <br />1:\Holcim\GW Monitoring ReportsWovember 2004~Covcr Letter.doc <br />