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r7~ Facitiry No. COWSUOaao <br />- ~ ~ ~JG ~ - ~ ~/ CDMG Permit Na. M-99-005 <br />p Page 1 <br />^~ CERTIFICATION ` a ~ ~~- a3 <br />AUTHORIZATION TO DISCHARGE UNDER THE <br />CDPS INDUSTRIAL GENERAL PERMIT <br />FOR SAND AND GRAVEL MININGAND PROCESSING GENERAL PERMIT <br />Category 07, Sub-category IA -General Permits, Sand and Gravel -Process Water &Stormwater <br />SIC Code 1442, Sand and grave[ mining, washing, crushing screening and stockpiling. <br />Current jee $321/year (efective July 1, 2003) <br />Thispermit spec~cally authorizes: Lafarge West, Inc. ~f ° ~~ ~~ <br />Todd Ohlheiser, Vice President "" ~~ <br />1590 W 12`" Avenue ~ ~ ~u~t,it-t, / <br />Denver, CO 80104 r _ _ ~" <br />303.657.4118 Fax: 303.657.4339 <br />with the facility contact of.' Phillip Courtney- 303.657.4118 <br />to discharge from facilities identified as the Duckworth Pit Project, located in Section 16, T2N, R68W,' Weld Counry, as shown in <br />Figure 1 of the permit, from outfalls 001-002, as shown in Figure 2 of the permit and further identified and described in the following <br />table. <br /> <br />y~;,k:0utf _ ,. <br />001 .... ,.n <br />:~; ,~'~, "" ' ~ -a,p ... ti6sr ` ` deatmentr~' : ' ' ~° '°s <br />Discharge from settling basin prior to entering Idaho Creek <br />~sttinated _ -Xar " <br />Avg. = I MGD <br />001 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 classed for the following uses: Recreation, Class 1a; Aquatic Life, Class Z <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 nor be required. <br />Phosphorus monitoring of the discharge will not be required. <br />Ej~luent limitations in Part LB.Z. a. of the permit and monitoring requirements in LB.3. of the permit apply to this f aciliry's process <br />water discharges. <br />At the time of application, the permrtree certified that they had developed and implemented a Stormwater Management Plan (SA'MP) for <br />this,`aciliry. As a condition ofrhis permit, a copy of the SWMP must be provided to the Division upon request. <br />The permittee is encouraged to read the genera! rationale for an understanding of how [his permit was developed and read the permit u: <br />see what requirements exist. In the permit, ef}iuent limitations and monitoring/reporting requirements are specified in Parts I.B. and <br />I. C; special notification requirements for effluent violarions are addressed in Part ILA. <br />All correspondence relative to this facility should reference the specific facility number, COG-500466. <br />Effective Seatember 2, 2003 Expires September 30. 2007 <br />John K. Nielar_ <br />Augtcst25, 200 <br />