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Permittee <br />Kerr Coal Company <br />PO BOX 459 <br />Florence, CO 81226 <br />Outfalls <br />Outfalls <br />This certification specifically authorizes Kerr Coal Company, to discharge from the Marr Mine Loadout, <br />as described below and in accordance with the General Permit for Coal Mining Facilities (Surface Runoff). <br />All correspondence relative to this facility should reference the specific facility number, COG - 850036. <br />Source <br />Colorado Discharge Permit System Regulations <br />CERTIFICATION <br />under <br />GENERAL PERMIT FOR COAL MINING FACILITIES (SIC NO: 1222) <br />Category 07, Sub- category 5, General Permits, Current fee $780, /year (CRS 25 -8 -502) <br />Treatment Lat/Long <br />Facility Contact <br />George Patterson <br />719- 784 -6395 <br />001 Surface Runoff Sedimentation 40° 43' / 106° 17' 0.154 MG Illinois River <br />Permit No. COG - 850000 <br />Facility No. COG - 850036 <br />Page la <br />Project Name, Activity and Location <br />The Marr Mine Loadout is a reclaimed coal mine loadout site under post mining conditions. Discharge is from surface water runoff. <br />The facility is located in SW % Section 28, and SE' /a Section 29, T9N, R79W, in Jackson County. <br />10 -Yr, 24 -Hr Receiving Stream <br />Capacity <br />Effluent Parameters <br />The discharge is to the Illinois River, within Segment 4 of the North Platte River Sub - basin, Upper Colorado River and North Platte River <br />Basin, found in the Classifications and Numeric Standards for the Upper Colorado River and North Platte River Basin (Regulation No. 33; <br />last update effective 3/1/08). Segment 4 is Undesignated, and is classified for the following beneficial uses: Aquatic Life, Class 1 Cold; <br />Recreation Class la; Water Supply; and Agriculture. <br />Permit Limitations and Monitoring Requirements for Post Mining, Outfall 001 <br />Parameter <br />Flow, MGD <br />pH, s.u. <br />Total Suspended Solids, mg /1 <br />Oil and Grease, mg/I <br />Settleable Solids, m1/1* <br />ISSUED: JUNE 24, 2008 <br />Limitations <br />30 -Day 7 -Day Daily Rationale <br />Avg. Avg. Max. <br />General Permit Requirements <br />Report NA Report <br />N/A NA 6.5 -9.0 <br />30 45 NA <br />N/A NA 10 <br />Federal Effluent Limitation Guidelines <br />Report NA 0.5 Federal ELG <br />Discharge Evaluation <br />Water Quality Standards <br />State Effluent Regulations <br />State Effluent Regulations <br />Monitoring <br />Frequency ' <br />Continuous / <br />Instantaneous` <br />2 days /month <br />2 days /month <br />2 days /month <br />2 days /month Grab <br />Sample <br />Type <br />Recorder / <br />In- situ 2 <br />Grab <br />Grab <br />Visual 3 <br />I — For a minor facility, as determined by the EPA NPDES Permit Rating Worksheet, all weekly monitoring requirements shall be changed to 2 days per month <br />2 — If power is not available, flow may be measured on an instantaneous basis Major facilities shall monitor flow weekly, minor facilities 2 days / month <br />3 — If a visual sheen is noticed, a grab sample must be taken and analyzed for oil and grease <br />4 — Quarterly monitoring shall be prescribed if the limitation is based upon discharge to the Colorado River Basin If the limitation is based upon agricultural protection, <br />the monitoring frequency shall be weekly <br />* Alternate Limitations may also apply See Below <br />EFFECTIVE: JULY 1, 2008 EXPIRES: JUNE 30, 2013 <br />