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t.ur nc--wtA-uv r dX • Jl3J r tSdUJ'?IU Jail iu LUi i it : of h'. U2 <br />Permit Number COor-S0ooo0, <br />Facility Number COG401527 <br />Modification 'No, I <br />Colorado Discharge Permit System Regulations Page l <br />MINOR A10DIFI'CA-TION TO CERTIFICA27OAr <br />: under <br />DI.SirHARGESAS,S'OCL4 EDWIMSAN,;DAND <br />G VELMININGr1NDPRf3CF„SSINGLtt'EJQATIONS <br />(A" OTHER NONWTALLXCMINERALSkkCEPT FUEL) <br />Category 07, Subcategory ]A, C[u-rent Onnual fee $270 (CAS 25-8-S02) (SIC 1442) <br />Division Initiated Modification = No Fee <br />This certification specifically authorizes Lafarge West, Inc. to discharge, in accordance with the <br />General Permit for Sand and Gravel Mining and Processing operations (and other nonmetallic minerals excerpt fuel), <br />All correspondence relative to Us facility should reference the specific facility number, COG-501527, <br />permittee contact <br />Lafarge West, Inc. Meghan McDonald, Director of Environment <br />10170'Cf'tnli Ranch Way, Suite 200 phone: 303-657-4000 <br />Westminster, CO 80021 Facility Contact: Corey Hansen, EavironmenW Manager <br />Email: g-orey.hansen@lafargee-na_com <br />mod jcatiorr No. I <br />The certification has been modified to remove the site specific parameters that were added to the certification, After review of the, <br />application and the location of the facility; there is no known groundwater contamination in the area. The table for Effluent <br />Limitations and Monitoring Requirements has been updated. , <br />,Project Name, Activity and Location <br />Lafarge Iverson Facility - The facility is located at 501 I F. Street in Greeley (Weld County), Colorado 80631i Latitude: 400' <br />26'27.45" north, longitude: 104°45'33.25" west Sand and.grag l mining takes place at this facility, however material is uaxtsported <br />from this facility and transported via conveyor belt to the Lafar a 35 plant- Ground water is discharged from this site. <br />001A The discharge of groundwater after treatment with sediment and erosion controls <br />prior to entering the Cache La poudre River: Avg.= 5 MOD <br />002A The discharge of groundwater after treatment with sediment and erosion controls <br />prior to entering the Cackle La poudre Rivera Avg.= 5 MGD <br />Effluent Parameters <br />The discharges go to the Cache La Poudre River, which is within Segment 12 of the Cache La Poudre River Sub-basin, South Platte <br />River Basin, found in the Cl ssificat- end umeric Standards" for th South Platte Rive Basin (Regulation No. 38; last update <br />effective November 30, 2010). Segment 12 is undesignated and is classified for the following <br />(Warm); Recreation, Class E; said Agriculture. beneficial uses: Aquatic Life, Class 2 <br />and <br /> <br /> <br />Flow, MGD <br />DH. su. <br />Report <br />7?17ary Dail i <br />Wis.. n ' Xativnnle <br />wF 5 r•...,a <br />---_-General )?eemft 1te?ulrements <br />NA Report Discharge Evaluation t <br />NA 6.5-9.0 WQS/IMDL/303(d) 2 <br />A via, 0H? rtaaaa aotlaS to l 30 45 <br />State Effluent Re <br />1f power is notavailabla, flow maybe measured on an instantaneous balls, Fscitiry sball monitor <br />J If a visual sheen is nogccd a <br />grab lamptc mus[ Dc taken and analyzed for ail and grease <br />MODIFIl?1a ANb EFFECTZ?rE: DECEMBER 20'2010 <br />E7?')<i2AT N: N'N1: 30 0.13