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COLORADO DEPARTMENT OF HE4LTH, Water Quality Control Division Rationale - Page 2. Permit No. COG-850025 III. RECEIVING STREAM: A. Identification, Classification and Standards 1. Identification: All discharges will go to an unnamed drainage ditch segment 4) that is tributary to the Colorado River, Lower Colorado River subbasin, Lower Colorado River Basin (Planning Region 11). 2. Classification: Segment 4 is classified for the following uses: Recreation, Class 2; Aquatic Life, Class 2 (Cold); Agriculture. 3. Numeric Standards: The standards which have been assigned in accordance with the above classifications can be found in 3.7.0 Classifications and Numeric Standards for the Lower Colorado River Basin (5 CCR 1002-8). It should be noted that this facility does not discharge pollutants which are limited by water quality standards with the exception of pH. B. Receiving Water Data 1. Stream Low Flow: Not applicable; effluent limitations are not flow based. IV. FACILITY DESCRIPITION: The Newcastle Energy Corporation Lacy Loadout facility is used for temporary storage of coal for loading onto railroad cars. The estimated lifetime at this facility is approximately 5 years. The loadout facility is associated with the Newcastle Energy Corporation Coal Ridge ;~1 Mine nearby, which is currently not producing, but the maximum production rate is up to 1,000,000 tons per year. There are no post-mining areas at this facility. There is no bath house or sanitary wastewater contributions at this facility. There is no bulk storage of diesel fuel, gasoline, solvents or other hazardous materials at the site. Land application of wastewater does not occur at this site. The facility is not located within one mile of a landfill or any other mine or mill tailings. 'At the loadout facility, only surface runoff water enters the containment pond. Since the containment pond has been designed to capture runoff water resulting from a 10-year, 24-hour event or less, it is anticipated that little flows will be discharged. If significant runoff water is collected, it will stand in the pond for at least 24 hours before being pumped into the drainage channel through discharge point 001. No chemicals are used for treatment in the pond.