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COLORADO DEPARTMENT OF PUBLlC HEALTH AND ENV/RONMENT, Wader Quality Control Division Rationale-Page 12, Permit No. CO-0032638 2. Conpliance Schedules: All information and written reports required by the following compliance schedules should be directed to the Permits Section for Etna/ review unless otherwise stated. a. Sediment Control Plata - In accordance with 40 CFR Part 434.82, the permdttee must submit aaste-specific Sediment Control Plan to the permitting authoriy that is designed to prevent an increase in the average annual sediment yield from pre-mined, undisturbed conditions, for Outfalls 004A, and 007A. The Sediment Control Plan must 6e approved by the permitting authority and be incorporated into the permit ns an effluent limitation. The Sediment Control Plan must identify best management practices (BMPs) and also must describe design specifications, construction specifications, maintenance schedules, criteria for inspection, as well as expected performance and longevity of the best management practices. Using watershed models, the operator must demonstrate that implementation of the Sediment Control Plan will result in average annum sediment yields that will not be greater than the sediment yield levels from pre-mined, undisturbed conditions. The operator must use the same watershed model that was, or will be, used to acquire the SMCRA perml[. The operator must design, implement, and maintain BMPs in the manner specified in the Sediment Control Plan. Code Event Description PermifCitation Due Dare' -"- Submit Plan Submit the Sediment Control Plan for approval, including 73305 of Action documentation of the sediment yield from pre-mining, Part LA. S. /2/0!/07 undisturbed conditimts. E. Waste Minimizatiott/Po[lution Prevention Waste minimization and pollution prevention are two terms that are becoming increasingly more common in industry today. Waste minimization includes reducing the a.mouztt of waste at the sottrce through changes in industrial processes, and reuse and recycling of wastes for the original or some other purpose (such as materials recovery or energy production). Pollution prevention goes hand-in-hand with waste minfmtzation. Ifthe waste is eliminated at thefront afthe line, it will riot have to be Created at the end of the line. The direct benefits to the industry are often significant, both in terms of increased profet and in public relations. This program can affect all areas of process and waste control with which an industry deals. E/imination or reduction of a wastewaterpollutant can also restdt in a reduction in an airpollutant or a reduction in the amount ofhazardous materials that must be handled or disposed. This discharge permit does not specifically dictate waste minimization conditions at this time. The Division does strongly encourage the permittee to continue working in developing and implementing a waste minimization plan. Several industries have already developed plans and found that implementation resulted in substantial savings. Both the Colorado Department of Public Health and Environment and the F.nvtronmental Protection Agency (EPA) have information and resources available. For more in-depth information, please contact these agencies. Andrew J. Neuhan February 13, 2007 VII. REFERENCES A. "Basic Standards and Methodologies for Surface Wader'; Regulation No. 31, Colorado Water Quality Control Commission, effective December 31, 2005. B. "Classifications and Nmneric Standards for Upper Colorado River Basin and North Platte River (Planning Region 12)'; Regulation No. 33, Colorado Water Quality Control Commission, effective March 4, 2007. C. "Colorado Discharge Permit System Regulations", Regulation No. 61, Colorado Water Quality Control Commission, effective November 3Q 2006. D. "Regulations for Effluent Limitations ", Regulation No. 62, Colorado Water Quality Control Commission, effective December 30, 1998. E. "Colorado River Salinity Standards ", Regulation No. 39, Colorado Water Quality Control Commission, effective August 30, 1997.