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a~ : d ~1 G <br />BBL <br />BLAStAND, BOl1CK & LEE, INC. <br />Bn glneers & Sc/en lls is <br />Transmitted Via U.S. Mail <br />Apri15, 2004 <br />RE~'^ <br />APR 0 6 ZUU4 <br />Mr. Michael Gantenbein <br />Quarry Manager <br />Holcim (US) Inc. <br />3500 Highway 120 <br />Florence, CO 81226 <br />Division of Minerals & GeolopY <br />Re: Holcim (IJS) Inc. Portland`,~Colorado Quarry Groundwater Monitoring Report <br />DMG Permit No. M-1977'344, Technical Revision o. 6 <br />BBL Project # 254.50.002 <br />Dear Larry: <br />Please find enclosed two copies of the Holcim (US) Inc. Groundwater Monitoring Report, which <br />summarizes analytical results for a groundwater sample collected at monitoring well MW-10 on <br />January 16, 2004. We will be sampling MW-10 for two more quarters, and will relay that data to <br />you to complete the requirements of Technical Revision No. 6. The next round of quarterly <br />groundwater sampling at MW-10 is scheduled for April, 2004. <br />Please contact me if you have any questions. <br />Sincerely, <br />BLASLAND, BOUCK & LEE, INC. <br />AI Notary, P. <br />Associate <br />Enc. <br />cc: Paul Detterline, Holcim (US), Inc. <br />14142 Denver West Parkway • Suite 350 • Golden, C0 80401-31 90 <br />Tel (303) 231-9115 • Fax (303) 237-9571 • www.bbl-inc.com • offices nationwide <br />1:\Holcim\GW' Monitoring Reports\Febmary 2004\101342186.doc <br />L,0 0 <br />