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it' Permit No. COG-500000 Facility No. COG-500394 CDMG Permit No. M-99-120 Page I " CERTIFICATION A UTHORIZATION TO DISCHARGE UNDER THE CDPS INDUSTRIAL GENERAL PERMIT FOR SAND AND GRA VEL MINING AND PROCESSING GENERAL PERMIT Category 07, Sub-category IA - General Permits, Sand and Gravel- Process Water & Storm water SIC Code 1442, Sand and gravel mining, washing, crushing screening and stockpiling. Currentfee $193/year (effective Julyl, 2002) 'E,his permit specifically authorizes: L. G. Everist, Inc. II R. A. Everist, President . 7321 E. 88th Avenue, Suite 200 Henderson, CO 80640 (303)+287-4656 FAX: (303)+289-1348 ,I with the facility contact of Lynn Mayer, Regulatory Manager (303)+ 287-4656 to discharge from facilities identified as the Ft. Lupton Sand and Gravel Mine, located in the S ~ of the NW ~ of Section 30, T2N, R67W, Weld County, as shown in Figure I of the permit, from outfall 001, as shown in Figure 2 of the permit and further identified and described in the fJllowing table. II Outfall 001 I Description and Treatment Discharge jT.om the settling basin prior to entering the South Platte River. Estimated Flow Rate Avg. = 2.6 MGD II T/:le discharge is to the South Platte River, Segment I of the Middle South Platte River Sub-basin, South Platte River Basin, found in the '[assi(ications and Numeric Standards for the South Platte River Basin (5 CCR 1002-38), effective January 30, 2002. Segment I has been designated Use Protected and classifiedfor the following uses: Recreation, Class fa; Aquatic Life, Class 2 (Warm); Agriculture. Salinity (TDS) monitoring of the discharge will not be required. Phosphorus monitoring of the discharge will not be required. Antidegradation review does not app~v to this permit. At the time of application, the permittee certified that they had developed and implemented a Storm water Management Plan (SWMP) for this fafility. As a condition of this permit, a copy of the SWMP must be provided to the Division upon request. ~ I T~e permittee is encouraged to read the general rationale for an understanding of how this permit was developed and read the permit to see what requirements exist. In the permit, effluent limitations and monitoring/reporting requirements are specified in Parts I.B. and I. C; special notification requirements for effluent violations are addressed in Part II.A. All correspondence relative to this facility should reference the specific facility number, COG-500394. 'I Effective OCTOB ER 1, 2002 Expires SEPTEMBER 30. 2007 Karen Young November II, 2002 II This facility permit contains 25 pages.