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Permit No. COG-50000 <br />Facility No. COG-500430 <br />CDMG No. MJ8-051 <br />Page 1 <br />AMENDMENT NO. 1 TO CERTIFICATION <br />AUTHORIZATION TO DISCHARGE (/R'DER THE <br />CDPS INDUSTRIAL GENERAL PF.RtYtIT <br />FOR SAND AND GRAVEL M eNING AND PROCESS eNG GENERAL PERMIT <br />Category 2i, Sub-category 1 -General Permits, Amendments to Sand and Grave! -Process Water & Stornwater <br />SIC Code 1442, Snnd and gravel mining, washing, crushing screening and stockpiling. <br />Arnendment fee of S80 = 25% ofAnnual fee (effective Julyl, 2003) <br />This permit specifzca[ly authorizes, Lafarge West Inc. <br />Ian Smith, Dir. of Operations <br />1590 West 12th Ave <br />Det+ver, Colorado 80204 <br />(303) 65 7-4000 1~'ac (303) 6.57-4339 <br />with the Facility contact of.~ Phillip J Courtney <br />(303) 657-4118 Fax (303) 659-4339 <br />to dischargefrom facilities identifzed as [l+e Ffowe Pit, located in the 1V4V'/,, Section 3, S %, Section 9, T2S, R67W, Adams county, as shown in fi~nrre 1 <br />ofthe permit, fr'an Discharge Point(s) identified as 001 and 002, as shown in figure 2 ofthepermit and fizrther identifzed and described in this ruble. <br />Discharge <br />Point <br />~ Description and treatment Estimated ' <br />Flow Rate <br />001 Discharge from the settling basin before entering the South Platte River. Avg. = 6.0 MGD <br />002 Discharge franc the settling basin before entering the South Platte River. Avg. = 6.0 tYIGD <br />003 Discharge from the settling basin before entering the Fulton Ditch, tributary to the South <br />Platte River Avg. = ti.0 zLIGD <br />Tne dischargec~irom iiuifailc OOi-002 are to SeS~rnent IS ofthe Unoer South Platte River Szib-basin, found in thz Ctassiizcafions and ivumeric <br />Standm~ds for the South Platte River Basin Regulation 38 (5 CCR 100248); last update effective January 30, 2002. This segment has been classified <br />for the following uses: Recreation, Class /a; Aquatic Life, Class l (Warm); Agriculture; Alater Supply. <br />The dischargefrom Outfal1003 is to Segment IOc ofthe Upper South Platte RiverSub-basin, found in the Classikcatians and tVumeric Standardr7or <br />the South Platte Rz'ver Basin Regulation 38 (5 CCR 1002-38); Inst update effective January 30, 2002. This segment has been designated Use <br />Protected and is classified for thefo !lowing uses: Recreation, Class la; Agzzatic Lije, Class 2 (Warm); Agriculture. <br />Satinity (TUS) monitoring of the discharge will trot be required. <br />Phosphorus monitoring ajthe discharge will not be required. <br />Antidegradation review does not apply to this permit. <br />At U+e time ojapplication, the permittee certified that they had developed and implemented a StormwaterManagement Plan (SWiYIP) forthisjaci[tty. <br />Ian Smith signed this certifzcation on October 10, 2002. As a condition of this permit, a copy of the SWMP must be provided to the Division upon <br />request. <br />Tlzis certiftcntion has beetz atneteded to reflect the addition of Outfalt 003. <br />The permittee is encouraged to read the general rationalefor an understanding of how this permit was developed and read the permit to see what <br />requirements have changed since the last renewal. In the permit, effluent limitations are spec ed in Pmts LB. and LC and monitoring/reporting <br />requirerents are specified in Part LD; special notification requirements for effluent violations are addressed in Part ILA. <br />A[I correspondence relative to this facility should reference the specificfacility number, COG-500430. <br />Amended by John K. rVielard <br />April 5, 2004 <br />AMENDED AND EFFECTIVE: APRIL 16, 2004 EXPIRES: SEPTEMBER 30. 2007. <br />This facility permit contains 26 pnges. <br />