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. 11 '5_ ,. Colorado Discharge Permit System Regulations CERTIFICATION under GENERAL PERMIT FOR COAL MINING FACILITIES (SIC NO: 1222) Category 07, Sub-category 5, General Permits, Current fee $7801year (CRS 25-8-502) Permit No. COG-850000 Facility No. COG-850028 Page la This certification specifically authorizes Terror Creek Company, to discharge from the Terror Creek Loadout, as described below and in accordance with the General Permit for Coal Mining Facilities (Surface Runoff). All correspondence relative to this facility should reference the specific facility number, COG-850028. Permittee Terror Creek Company 43440 Bowie Road Paonia, CO 81428 Facility Contact Kelly Fritzler 970-929-5855 Project Name, Activity and Location The Terror Creek Company processes (crushes and screens) and ships coal from nearby mines to speciality markets. Coal is not mined at this facility. Up to 500,000 tons of coal may be processed annually. Discharge is from surface water runoff. The facility is located in NW '/4 and SE 1/4 Section 15, T13S, R91W, in Delta County. Outfalls Outfalls Source Treatment Lat/Long 10-Yr, 24-Hr Capacity Receiving Stream Surface Runoff Sedimentation 38° 55.16' / 107° 32.37' 0 29 MG North Fork of the . 001 Gunnison River Surface Runoff Sedimentation 38° 55.08' / 107° 32.59' 0 12 MG North Fork of the . 002 Gunnison River Effluent Parameters The discharge is to the North Fork of the Gunnison River, within Segment 2 of the North Fork of the Gunnison River sub-basin, Gunnison River and Lower Dolores River Basin, found in the Classifications and Numeric Standards for the Gunnison River and Lower Dolores River Basin (Regulation No. 35; last update effective 7/1/07). Segment 2 is Undesignated, and is classified for the following beneficial uses: Aquatic Life, Class 1 Cold; Recreation Class E; Water Supply and Agriculture. Permit Limitations and Monitoring Requirements for Coal Preparation Plants and Associated Areas, Outfalls 001 and 002 Limitanotis Monitoring Sample Parameter 30-Day l 7-Day Daily Rationale r 4v tlv Aia Frequency 7jpe ----- ----- General Permit Requirements Flow, MGD Report NA Report Discharge Evaluation Continuous / Recorder Instantaneousz / In-situ' pH, s.u. N/A NA 6.5-9.0 Water Quality Standards 2 days /month Grab Oil and Grease, mg11 N/A NA 10 State Effluent Regulations 2 days /month Visual s ?--- Federal Effluent Limitation Guidelines- Total Suspended Solids, mg11 * 35 NA 70 Federal ELG 2 days / month Grab Settleable Solids, m111 * Report NA 0.5 Federal ELG 2 days / month Grab Site Specific Limitations- Total Dissolved Solids, mg/1 Report NA Report Salinity Regulations Quarterly 4 Grab Total Recoverable Iron, ug11 *** 1000 NA NA Water Quality Standards 2 days / month Grab 1 - 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. 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 3 - If a visual sheen is noticed, a grab sample must be taken and analyzed for oil and grease 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, the monitoring frequency shall be weekly. * Alternate Limitations may also apply. See Below. *** This limitation will apply and will substitute for the 30-day average total iron limit based upon the ELG, when a total recoverable iron standard is applicable to the stream segment. MODIFIED AND EFFECTIVE: JULY 10 2008 EXPIRES: JUNE 30, 2013