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<br />LEONARD RICE ENGINEERS, INC. <br />2000 CLAY STREET, SUITE 300 DENVER, COLORADO 8021 1-51 1 9 <br />(303) X55-9589 • (800) 453-9589 1 FAx (303) 455-01 15 <br />November 15, Zoos RECEIVE® <br />NOV 1 6 2005 <br />Tom Schreiner ~ <br />Division of Minerals and Geology <br />State of Colorado Division of Minerals and Geology <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />RE: Appendix B -Blasting Vibration Analysis - DMG Application M-2004-067 <br />Dear Mr. Schreiner: <br />GREG ROUSH <br />GREGG TEN EYOK <br />LESLIE BOTHAM <br />JON FORD <br />ERIN WILSON <br />ED ARMBRUSTER <br />Enclosed are two copies of the final Appendix B (Vibration Study of the Black Hawk/Central City <br />Sanitation District Wastewater Treatment Plant and Silver Dollar Metropolitan District Light <br />Facility) for the report, Blast Vibration Analysis of Proposed MMRR Quarry on the Black <br />Hawk/Central City Wastewater Treatment Plant and Silver Dollar Metropolitan District Facilities <br />that was submitted to your office on November 10, 2005. These should replace the Appendix found <br />in that report. Please contact me if you have any questions. <br />Very truly yours, <br />LEONARD RICE ENGINEERS, INC. <br />~~~~~ <br />J eph J. Bernosky, .E. <br />Project Manager <br />Enc. <br />Cc w/enc: Paul Gesso <br />Banks and Gesso, LLC <br />720 Kipling Street, Suite 117 <br />Lakewood, CO 80215 <br />WATER RIGHTS i GROUND WATER 1 PERMITTING 4 WATER SUPPLY PLANNING A C <br />