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.~- <br />- <br /> <br />STATE OF COLORADO <br />Roy homer, Governor <br />Pam Shwayder, Acting E><eMive Director <br />Dedinfed to pnNating and improving fire hr~Uh and environment of the peopk dGolorado <br />4300 Clrrny Geek Dr. S. Laboratory Building <br />Denver, Colorado 80222-1570 4210 E. 11th Avenue <br />Phone p03) 692-2000 (hrrver, Cobndo 80220-7716 <br />p03) 691 X700 <br />Crystal Gray June 22, 1995 <br />Adams County Parks Department <br />9755 Henderson Road <br />Brighton, CO 80601 <br />RE: Stormwater Permit Requirements for Mining Activities <br />ICalcevfc Gulch <br />M-95-033, Adams County <br />Dear Sir or Madam: <br />Of ~r0 <br />~,~ i <br />.r'.e <br />'revs' <br />Colondo Deparanenr <br />of Public Hnllh <br />and E+tvirotunrnt <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 under 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 />Back ound <br />In 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 stotmwater <br />from their facilities. <br />The stotmwater regulations apply to active and inactive mines, if runoff contacts overburden, raw <br />material, intermediate or futished 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 adn3inister this program in Colorado. The Division has issued a general <br />permit for Sand and Gravel Mining and Processing (and other nonmetallic minerals except fuel). <br />Application Requirement <br />An application form for the General Permit has been enclosed. Please complete an application for the <br />site and submit it [o 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 />