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STATE OF COLORADO <br />John W. Hickenlooper, Governor <br />Larry Wolk, MD, MSPH <br />Executive Director and Chief Medical Officer <br />Dedicated to protecting and improving the health and environment of the people of Colorado <br />4300 Cherry Creek Dr. S. <br />Denver, Colorado 80246 -1530 <br />Phone (303) 692 -2000 <br />Located in Glendale, Colorado <br />www.colorado.gov/cdphe <br />Jean M Cowman, Operator <br />Cowman Jean <br />1065 S Woodland Ave Ste 1 <br />Woodland Park, CO 80863 <br />DATE; October 21, 2013 <br />Laboratory Services Division <br />8100 Lowry Blvd. <br />Denver, Colorado 80230 -6928 <br />(303) 692 -3090 <br />MEMO RE: Certification, Colorado Discharge Permit System <br />General Permit No. COR340000, Certification Number: COR341720 <br />Cowman Jean - Agnus Dei lode claim <br />of . coto <br />0 <br />* 1876 <br />Colorado Department <br />of public Health <br />and Environment <br />DIVISION CONTACTS <br />Lori Mulsoff Environmental Protection Specialist 303 - 692 -3549 <br />Karen Harford, Admin, at 303 - 691 -4019 Loretta Houk Admin 303 - 692 -3531 Debbie Jessop Tech IV 303 - 692 -3590 <br />ATTACHMENTS: <br />Certification <br />General Permit Sand & Gravel Mining and Processing <br />Annual Report <br />Blank Discharge Monitoring Report (DMR) Form <br />The Water Quality Control Division (the Division) has reviewed the application submitted for the Agnus Dei lode claim (the <br />facility) and determined that it qualifies for coverage under the CDPS General Permit for Stormwater Discharges Associated with <br />Sand & Gravel Mining and Processing (the stormwater permit). <br />DISCHARGE SPECIFIC INFORMATION <br />The discharge is to Fountain Creek within Segment 01a of the Fountain Creek Sub - basin, Arkansas River Basin, found in <br />the Classifications and Numeric Standards for the Arkansas River Basin (Regulation No. 32) (COARFO01a). Segment 01a <br />is Reviewable, and is classified for the following beneficial uses: Aquatic Life, Class 1 Cold; Recreation Class E; Water <br />Supply; and Agriculture. <br />BASIS FOR STORMWATER DISCHARGE MONITORING <br />The Division has determined that the practice -based effluent limits (i.e., SWMP and BMP requirements) in the <br />stormwater discharge permit are adequate to protect all water quality standards and meet any TMDL requirements <br />applicable to stormwater discharges from this facility. <br />However, as allowed by the stormwater discharge permit, the Division requires that the permittee sample stormwater <br />discharges from the industrial activities conducted at the facility to: 1) measure the effectiveness of the BMPs <br />implemented at the facility with respect to removing pollutants from the discharge or meeting any applicable TMDL <br />requirements and, 2) establish whether additional BMPs are required for any other pollutants for which the receiving <br />water is impaired. The enclosed permit certification provides the sampling parameters for stormwater discharges from <br />the facility. <br />If information becomes available that indicates the stormwater discharge permit does not protect all water quality <br />standards or meet applicable TMDL requirements, the Division may require an individual or alternate general permit <br />