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` Crx°Rsp COLORADO <br /> Department of Public <br /> Health b Environment <br /> Dedicated to protecting and improving the health and environment of the people of Colorado <br /> CERTIFICATION TO DISCHARGE UNDER CDPS GENERAL PERMIT COG500000 <br /> DISCHARGES ASSOCIATED WITH SAND Et GRAVEL MINING AND PROCESSING <br /> (and other Nonmetallic Minerals except fuel) <br /> Certification Number: COG501737 <br /> This Certification to Discharge specifically authorizes: <br /> Langston Concrete Inc <br /> to discharge from the facility identified as <br /> Florence Sand and Gravel Pit <br /> to: <br /> Coal Creek <br /> Facility Located at: , Florence, Fremont County, CO 81226 <br /> Center Point Latitude 38.3833, Longitude -105.116666 <br /> l(} urDisc <br /> Outfall(s)tai to Surface Discharge Outfail(s)Description Receiving Stream <br /> Water Lat, Long <br /> Outfall Number 38.3833, Stormwater discharge Coal Creek <br /> 001-A -105.116666 <br /> All discharges must comply with the lawful requirements of federal agencies, municipalities, counties, <br /> drainage districts and other local agencies regarding any discharges to storm drain systems, conveyances, or <br /> other water courses under their jurisdiction. <br /> Stormwater Monitoring Requirements <br /> Permit Limitations and/or Monitoring Requirements apply to outfall(s) 001A as outlined in the Permit in <br /> Part I.C.2 and Parts I.G through I.Q. <br /> On the effective date of this certification, the Florence Sand and Gravel Pit is subject to the monitoring <br /> requirements identified below at each discharge point of stormwater from the facility. <br /> A. Visual monitoring, Part 1.1.1 <br /> Per Part 1.1.1 of the permit, the permittee must collect a stormwater sample from each outfall (or a <br /> substantially identical outfall pursuant to Part I.H.1 of the permit) and conduct a visual assessment <br /> of each of these samples once each quarter for the entire permit term. <br /> B. WQBEL/Water Quality Standards, Part 1.1.4 <br /> Discharges authorized under this permit must be controlled as necessary to meet applicable water <br /> quality standards. <br /> Page 1 of 2 <br /> CDPHE <br /> 4300 Cherry Creek Drive S., Denver, CO 80246-1530 P 303-692-2000 www.colorado.gov/cdphe/wqcd <br /> * B, <br /> John W. Hickenlooper, Governor ( Larry Wolk, MD,MSPH, Executive Director and Chief Medical Officer CO Q <br />