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rte: • • <br />STATE OF COLORADO <br />~ tt~, cov<,nor <br />Patti snMVyaa, noi~ E:ea.;K oireaor <br />Dedicated to prolectingand improving the heshh and errviranment olthr people o(Cokuado <br />X300 Geek Dr. S. Laboratory BuOding <br />Denier, orado 80222-1530 4210 E. 111h Avenue <br />Phone p03) 692-2000 Denier, Colorado 80220.3716 <br />(3031691 X700 <br />Crystal Gray June 22, 1995 <br />Adams County Pazks Department <br />9735 Henderson Road <br />Brighton, CO 80601 <br />RE: Stormwater Permit Requirements for Mining Activities <br />ICalcevic Gulch <br />M-95-033, Adams County <br />Deaz Sir or Madam: <br />oF~~O~ <br />ti~ f <br />M <br />•.__. <br />Colorado Depuunent <br />of PubGcHalth <br />and &lvimllmmt <br />We have received a copy of the reclamation permit application notice and/or an inspection report for <br />the site, from the Colorado Division of Minerals and Geology (formerly the Mined Land Reclamation <br />Division}. The Water Quality Control Division administers a stormwater program, designed to <br />control stormwater runoff from certain categories of industrial activity, including mining. Your <br />facility falls tinder one of these categories. Our records indicate that you have not applied for or <br />obtained a stormwater permit for the above-referenced mining operation. <br />Backeround <br />La 1987, the US Congress amended the Clean Water Act to expressly include stormwater discharges <br />from mining sites (and other industries) as requiring Clean Water Act controls. In 1990, EPA issued <br />regulations that require specific mining activities to obtain permits in order to discharge stormwater <br />from their facilities. <br />The stormwater regulations apply to active and inactive mines, if runoff contacts overburden, raw <br />material, intermediate or finished product, or waste products, and leaves the site. <br />The Water Quality Control Division of the Colorado Department of Public Health and Environment <br />has direction and authority to administer this program in Colorado. The Division has issued a general <br />permit for Sand and Gtavel Mining and Processing (and other nonmetallic minerals except fuel). <br />Aoolication Requirement <br />An application form for the General Permit has been enclosed. Please complete an application for the <br />site and submit it to our office by August 3, 1995. Note that the application must include notice of <br />preparation of a Stormwater Management Plan (SWMP), as described in Appendix A of the <br />application. (The plan itself does not need to be submitted.) <br />