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Pnxr~t ' Page NaA Permit No. COG-850000 B. EFFLUENT LIMITATIONS AND MONITORING REQUIItEMENTS 2. Stormwater Manaeement Plan (SWMP) A Stormwater Management Plan (S WMP) shall be developed for the portion of each facility covered by this section of the permit. i SWMP shall be prepazed in accordance with good engineering practices. (A registered engineer need not complete the plan.) The plan shall identify potrntial sources of pollution (including sediment), which may reasonably be expected to affect the quality of stotmwater dischazges associated with the mining operation. In addition, the plan shall descnbe and ensure the imptementation of best management practices (BMPs), which will be used to reduce the pollutants in stormwater discharges, associated with mining activity. Mining operations must implement the provisions of the SWMP required under this part as a condition of this permit. The Division reserves the right to request and review the plans, and to require additional measures to prevent and control pollution, as needed. The SWMP shall descnbe all azeas that have not been previously permitted, and which meet the definition of a stormwater discharge in 40 CFR 122.26. Examples of such azeas are roads and railroad lines used for transportation to and from the site, outslopes of ponds, inactive loadouts, sites used for storage and maintenance of material handling equipment, and azeas granted small azea exemptions. a) SWMP Contents The SWMP shall include the following items, at a minimum: 1) Site Map The plan shall provide a site trap or maps, which indicate, at a minimum: - Mining site boundaries - Access and haul roads - Stormwater ouffalls and an outline of the drainage azea of each stormwater ouffall - An estimate of the direction of flow - Materials handling azeas - Each existing stmcnrral control meastue to reduce pollutants in stotmwater runoff - Areas used for storage or disposal of overburden, materials, soils or wastes, including tailings piles o: ponds - Areas used for mineral milling and processing - Springs, streams, wetlands and other surface waters - Location of mine drainage or any other process water dischazge points - boundary of azea that contnbutes runoff to ouffalls that aze subject to effluent limitations guidelines. - Date the map was prepazed 2) Description of Potential Pollutant Sottrces/Material Inventory The plan shall provide a description of all potential sources (activities and materials), which may reasonably be expected to add pollutants to storntwater dischazges. Such sources may include haul roads, equipment storage and maintenance areas, fuel storage azeas, etc. In each case where stotmwater pollution potential exists, appropriate preventive measures tmtst be taken and documented. 3) Stormwater Quality Controls Each mining site covered by this permit shall develop a description of stormwater quality controls appropriate for that site, and it~tlemrnt such controls. The appropriateness and priorities of controls in the plan shall reflect identified potential sources of pollutants at the site. The description of stormwater quality controls shall address the following minimum coatponents, including a schedule for implementing such controls: a. SWMP Administrator - The S WMP shall identify a specific individual or individuals within the training organization who is responsible for developing the SWMP and assisting the thine operator in its implementation, maintenance, and revision. b. Materials Handline and Snill Prevention -Where materials can impact stormwater runoff, BMPs that reduce the poten^'t for contamination shall be descnbed. For example, materials should be stored and handled in covered azeas whew possible to prevent contact with stormwater; fuels and other chemicals should be stored within berms or secondary containment devices to prevent leaks and spills from entering stormwater runoff. .rt,.