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PART I Page No. 7 Permit No. COG-850000 B. EFFLUENT LAZI'I'ATIONS AND MONITORING REQUIRIII~NTS 2. Stormwater Manaeement Plan (SWMP) A Stotmwazer Management Plan (SWMP) shall be developed for the portion of each facility coveted by this section of the permit. The SWMP shall be prepared in at:cordance with good engineering practices. (The plan need not be completed by a registered engineer.) The plan shall identify potential sources of pollution (including sediment) which may reasonably be expected to affec[ the quality of stormwater discharges associated with the mining operatio¢. !n addition, the plan shall describe and ensure the implementation of best tttanagement practices (BMPs) which will be used to reduce the pollutants in stormwater discharges associazed with mi¢i¢g activity. Hitting 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 addiuottal measures to prevent and co¢trol pollution, as needed. The SWMP shall describe all areal that have not been previously permit[ed, and which meet the definition of a stormwater discharge in 40 CFR 122.26. Examples of such areas are roads and railroad lines used for transporta[ion to and from the si[e, outslopes of ponds, inactive loadouts, si[es used for storage and main[enance of material handling equipment, and areas granted small area exemp[ions. a) SWMP Contents The SWMP shall include ttte following items, at a minimum: 1) Si[e Map The plan shall provide a site trap or traps which indicate, at a minimum: - Mining site boundaries - Access and haul roads - Stotmwater outfalls and an outline of the drainage area of each stormwater outfall - An es[imate of the direction of flow - Materials handling areas - Farh existing strucrural control measure to reduce pollutants in stotmwa[er runoff - Areas used for storage or disposal of overburden, materials, soils or wastes, including tailings piles or ponds - Areas used for mineral milling and processing - Springs, streams, wetlands and other surface waters - Location of mine drainage or any other process water discharge points - boundary of area that con[ributes runoff to outfalls tha[ are subject to effluent limitations guideline. - Date the map was prepared 2) Description of Potential Pollutan[ Sources/Material Inventory The plan shall provide a description of all potential sources (activities and tnazerialsl which tray reasonably be ezpeaed to add pollutants to stormwater dischaz'ges. Such sources may include haul roads, equipment storage and maintenance areas, fuel storage areas, etc. In each case where stotmwater pollution potential exists, appropriaze preventive measures mttst be taken and documented.