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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 <br /> CDPS GENERAL PERMIT COG500000 <br /> DISCHARGES ASSOCIATED WITH SAND ri GRAVEL MINING AND PROCESSING <br /> (and other Nonmetallic Minerals except fuel) <br /> Certification Number: COG500444 <br /> This Certification to Discharge specifically authorizes: <br /> Elam Construction Inc <br /> to discharge from the facility identified as <br /> Delta Paving Pit <br /> to: <br /> Gunnison River <br /> Facility Located at: 8020 State Highway 65, Delta, Delta County, CO 81416 <br /> Center Point Latitude 38.767789, Longitude -107.996553 <br /> Defined Discharge Outfall(s) <br /> Outfall(s) to Surface Lat, Long Discharge Outfall(s) Description Receiving Stream MGD <br /> Water <br /> Outfall Number 38.769701, Process water discharge to drainage Gunnison River 0.58 <br /> 001-A -107.998348 ditch to the Gunnison River <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 /> Permit Limitations and Monitoring Requirements apply to outfall 001A as outlined in the Permit in Parts <br /> I.C.1, I.D, and I.E. <br /> Crushed Stone and Construction Sand and Gravel Facilities (SIC Code 1442) <br /> Permitted Feature ID: 001A <br /> Permitted Feature Type: External Outfall <br /> Limit Set: 2 <br /> DMR Reporting Frequency: Monthly <br /> Discharge Limitations <br /> Maximum Concentrations Monitoring Sample <br /> Parameter Units 30-Day 7-Day 2 Year Frequency Type <br /> Average Average Daily Max' Average <br /> Flow', MGD 0.58 NA Report NA Instantaneous, In-situ' <br /> 50050 Monthly <br /> pH, (Minimum- <br /> Maximum) s.u. NA NA 6.5-9.0 NA 2x/month Grab <br /> 00400 <br /> Total Suspended <br /> Solids, mg/l 30 45 NA NA 2x/month Grab <br /> 00530 <br /> Oil and Grease Visual NA NA NA NA 2x/month Visual2 <br /> 84066 <br /> Page 1 of 2 <br /> 4300 Cherry Creek Drive S., Denver, CO 80246-1530 P 303-692-2000 www.cotorado.gov/cdphe/wgc(i �_ <br /> John W. Hickenlooper, Governor I Larry Wolk,MD,MSPH, Executive Director and Chief Medical Officer ( • <br />