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8~~ LEE, INC. / <br />enplneers d sclensls ss <br />Transmitted Via U.S. Postal Service <br />RECEIVED <br />February 5, 2003 <br />FEB ~ 7: ~~1;3 `~ <br />Casey Cooley, Habitat Biologist <br />Colorado Division of Wildlife fJilrislon ~} Minerals and GeofoBY <br />Southeast Region <br />2126 N. Weber Street <br />Colorado Springs, Colomdo 80907 <br />~ f~r~ r~ <br />Re: Holcim (US) Inc. Relocation of Bear Creek, Florence, Colorado <br />Dear Mr. Cooley: <br />Following up on our telephone conversation on January 31st, please find enclosed Holcim's Wetland Mitigation <br />Conceptual Plan, prepared by BBL late last month. This conceptual plan is consistent with what we discussed, and <br />outlines the plan to create replacement wetlands on the east and west sides of Hazdscrabble Creek where it enters the <br />Arkansas River, upstream of the Holcim cement plant. This document was sent to the Army's Diana Humphreys at <br />the Corps office in Pueblo on January 28, 2003. <br />Holcim understands your concerns, as summarized in your September 25, 2002 letter to Mr. Harry Posey of the <br />Division of Minerals and Geology. As we discussed, our understanding of the hydrogeology in the Bear Creek area <br />is that once the azea is quarried and reclaimed, the current discharge of groundwater that now sustains the base flow <br />in lower Beaz Creek will likely be greatly diminished or cease entirely. Accordingly, reestablishing the pre-mining <br />Bear Creek wetlands/habitat is technically impracticable. The enclosed mitigation plan outlines Holcim's response <br />to this fact. You have stated your concern that, even with the creation of replacement wetland acreage, there may <br />still be a net loss in potential riparian habitat for certain species of concern. It may be possible that improvements <br />along the lower Hardscrabble Creek corridor could mitigate this to some extent, but I must defer that discussion to <br />other experts in my firm. <br />If you have any questions on the enclosure, or wish to discuss the issues further, please don't hesitate to contact me. <br />Sincerely, <br />BLASLAND, BOUCK & LEE, INC. <br />Al N , P.E <br />Vice Presiden <br />Enclosure <br />Cc (w/o enclosure): Michael Toelle, Holcim (US) <br />Larry Oehler, Division of Minerals and Geology !/ <br />Kris Hallinger, BBL <br />14142 Denver WesT Parkway • Suite 350 • Golden. C080401-3190 <br />Tel (303) 231-91 15 • fax (303) 237 -9571 • www.bbl-inc.com • offices nationwide <br />1:\Holcim\80232186.doc <br />