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PARTI Page No. L Permit No. COG-850000 EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS , 2. Stormwater Management Plan (SWMP) A Stormwater Management Plan (SWMP) shall be developed for the portion of each facility covered by this section of the permit. 7, SWMP shall be prepared in accordance with good engineering practices. (A registered engineer need not complete the plan.) The plan shall identify potential sowces of pollution (including sediment), which may reasonably be expected to affect the quality of stormwater dischazges associated with the mining operation. In addition, the plan shall describe and etsswe the implementation ofbest management practices (BMPs), which will be used to reduce the pollutants in stonnwater 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 tequesl and review the plans, and to require additional measwes to prevent and control pollution, as needed The SWMP shall descnbe all areas that have not been previously permined, and which meet the definition of a stormwater dischazge in 40 CFR 122.26. Examples of such areas are roads and railroad lines used for transportation to and liom the si[e, outslopes of ponds, inactive loadovts, sites used for storage and maintenance of material handling equipment, and areas granted small area exemptions. a) SWMP Contents The SWMP shall include the following items, at a minimwn: 1) Site Map The plan shall provide a site map or maps, which indicate, at a minimum: - Mining site boundaries - Access and haul roads - Stonnwater outfalls and an outline of the drainage area of each stormwater outfall - An estimate of the dtrection of flow • - Materials handling aeeas - Each existing structwal control measwe to reduce pollutants in stonnwater runoff - Areas used for storage or disposal of overbwden, 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 contnbutes runoff to outfalls that are subject to effluent limitations guidelines. - Date the map was prepared 2) Description of Potential Pollutant Sowces/Material Inventory The plan shall provide a description of al) potential sources (activities and materials), which may reasonably be expected to add pollutants to stormwater discharges. Such sowces may include haul roads, equipment storage and maintenance areas, fuel storage areas, etc. in each case where stormwater pollution potential exists, appropriate preventive measwes must 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 implement such controls. The appropriateness and priorities of controls in the plan shall reflect identified potential sowces of pollutants at the si[e. The description of stormwaier quality controls shall address the following minimum components, including a schedule for implementing such controls: a. SWMP Administrator -The SWMP shall identify a specific individual or individuals within the mining organization who is responsible for developing the SWMP and assisting the mine operator in its implementation, maintenance, and revision. b. Materials ]3andline and Soi11 Prevention -Where materials can impact stormwater runoff; BMPs that reduce the pot for contamination shall be described. For example, materials should be stored and handled in covered areas whenever possible to prevent contact with stormwater; fuels and other chemicals should be stored within berms or secondary conlaitvnent devices to prevent leaks and spills from entering stormwater runoff.