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~~ <br />~ ~ CDMG Permie No. M•99-00f <br />Page 1 <br />CERTIFICATION <br />AUTHORIZATION TO DISCHARGE UNDER THE <br />CDPS IND USTRLIl GENERAL PERMIT <br />FOR SAND AND GRAVEL MIYINGAND PROCESSWC GENERAL PERMIT <br />Category 07, Sub-category IA -General Permits, Sand and Gravel -Process Water & Stormwarer <br />SIC Code 1442, Sand and gravel mining, washing, crushing screening and stockpiling. <br />Current fee $321/year (effective July 1, 2003) <br />This permit speciftcally authorizes: <br />with the facility contact of.' <br />Lafarge West, Inc. <br />Todd Ohlheiser, Vice President <br />1590 W 1 Z's Avenue <br />Denver, CO 80204 <br />303.657.4118 Fax: 303.657.4339 <br />Phillip Courtney - 303.657.4118 <br />to discharge from facilities identified as the Duckworth Pit Projen, located in Secrton 16, T2N, R68W,' Weld County, as shown in <br />Figure 1 of the permit, from outfalls 001-002, as shown in Figure 2 of the permit and further idenrified and described in the following <br />table. <br />.. r_ <br />~. ~ ~. ~' <br />001 , .. ., ...., .. ~ ,,.~ . ~. <br />~ cri Y r`eatns.n ~~ <br />Discharge from settling basin prior to entering Idaho Creek _ <br />_ stii~ated oiv~2ar'~" ., <br />Avg. = 1 MGD <br />002 Discharge from settling basin prior to entering Lighthouse Cove pond. Avg. = 1 MGD <br />The discharges are to Idaho Creek and Lighthouse Cove Pond, Segment 11 of the Boulder Creek Sub-basin, South Platte River Basin, <br />found in the Classifications and Numeric Standards for the South Platte River Basin (5 CCR 1002-38), as amended January 30, 2002. <br />Segment 11 has been designated Use Protected and classified for the following uses: Recreation, Class 1 a; Aquatic Life, Class 2 <br />(Warm); Agriculture; Water Supply. <br />Antidegradation review does not apply to this permit because the receiving water is designated as Use Protected. <br />Salinity (TDS) monitoring of the discharge will not be required. <br />Phosphorus monitoring of the discharge wiR not be required, <br />Effluent limitations in Part LB.2. a. of the permit and monitoring requirements in 18.3, of the permit apply to this facility's process <br />water discharges. <br />Ai the time of application, the permittee certified that they had developed and implemented a Stormwater Management Plan (SWMP) for <br />this facility. As a condition of this permit, a copy of the SWMP must be provided to the Division upon request. <br />The permittee is encouraged to read the general rationale for an understanding of how this permit was developed and read the permit to <br />see what requirements exist. In the permit, effluent limitations and monitoring/reporting requirements are specified in Parts LB. and <br />L C; special notification requirements for ef}Iuent violations are addressed in Part ILA. <br />AI! correspondence relative to this facility should reference the specific facility number, COC-500466, <br />Effective September 2.2003 Expires September 30, 2007 <br />John K Nieland <br />August 25, 2003 <br />Permit#: (bi-ZU73•P41 Confidental?: tV <br />Class: ~ Type-Se <br />From: SDP q" <br />To: <br />Doc. Name: rfh7c ~a,,,.x. _ n ~ _ .. <br />Doc. Date (if no date stamp): (o ~ 3a_a <br />