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Np FLOOD <br />~o <br />~~ <br />O David W. Lloyd, Executive Director <br />u~ <br />nivefd <br />July 21, 2004 <br />~~~~~~~~ <br />d~6 ~ 2 2004 <br />bfii'sifi8 6f MiBetals & Gealo~ <br />Board of Directors <br />Executive committee: Berhan Keffelew <br />Debra Vickrey ~ Colorado Division of Minerals and Geology <br />Chairperson <br />ArapahoeCOUnry - <br />"s <br />1313 Sherman Street <br />Susan Spence ~ RUOtri 21$ <br />Chairperson ProTem <br />Town of Superior o <br />~ Denver CO 80203 <br />, <br />Paul Danish ~ <br />e o Subject: Construction Materials Regular (112) Operation Reclamation Permit Application <br />Boulde <br />County <br />Cretohen cerveny Aggregate Industries - WCR, Inc., Hazeltine Mine <br />Treasurer m permit No. M-2004-031 <br />City of Wheat Ridge ~_ <br />Elaine Valente ~' <br />Member at large y Dear Berhan: <br />Atlams County w <br />Members: ¢ This letter is in response to your request for our comments concerning the above- <br />Carol Boigon <br />f D to referenced application. We appreciate the opportunity to review this application only as <br />City/County o <br />enver 3 <br />Steve Burkholder m it relates to the South Platte River. <br />City of Lakewootl N <br />Ncel Busck <br />City of Thornton <br />~ <br />a <br />We have the following comments to offer: <br />Natline Cantwell 8 <br />s <br />City of Aurora 1. According to the "Technical Review Guidelines for Gravel Mining Activities <br />Cheryl Cohen-Nader <br />ciry/ceunry of Denver <br />Within or Adjacent to 100-Year Floodplains" (Guidelines), the north boundary <br />Ken Fellman <br />Cit <br />f Arvatl of the mining pit qualifies as a Type A Lateral Berm. When a Type A lateral <br />y o <br />a <br />~ <br />berm is leR in its unprotected natural state, the Guidelines call for a minimum <br />Douglas Garrett " <br />City of Englewootl allowable top width of 2$0 feet. When properly protected according to Section <br />B. H. Hoffmaster <br />in <br />r <br />E ~ 2.j.3 of the Guidelines, the minimum allowable top width can be reduced to <br />ng <br />ee <br />Micnelle Lawrence LL <br />only 100 feet. The applicant needs to show the limits of the adjoining mine to <br />Jefferson County N the north and confirm that the Guideline's conditions for a Type A lateral berm <br />Kathleen MacKenzie <br />City/County of Denver fO <br />a <br />are being met. <br />w. Mike Maxwen <br />Douglas County o 2. At the time of this review, the Urban Drainage and Flood Control District <br />Bad Miller <br />City of Centennial x <br />w <br />(District) has not officially committed to a cooperative project to stabilize the <br />An Padon ~ adjoining riverbank as per the Guideline requirements. We have initiated <br />Engineer cooperative project discussions with the applicant due to their desire to mine <br />Karen S[uart <br />city/cnunry <br />~ within.400 feet of the riverbank. However, we cannot guarantee a riverbank <br />of Broomfield project until the applicant deeds a flowage and maintenance access easement <br />EIDra Wetlgeworth <br />Ciry/Counry of Denver <br />and our Board of Directors authorizes funds to assist with the bank stabilization. <br /> Therefore, since no riverbank project has been authorized as of this review <br /> request, we request the note "MINING LIMIT WITHOUT FURTHER <br />