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2. Stormwater Requirements a. Stormwater Manaeement Plan (continued) PART [ Page No. 12 Permit No.: CO-0038776 Factors to consider include the toxicity of the material; quantity of chemicals used; amount of material processed; the likelihood of contact with stormwater; and history of significant drainage, leaks or spills of toxic or hazazdous pollutants. The description of the BMPs shall include: 1) Stotmwater diversion: Describe how and where stotmwater will be diverted away from material handling and storage aeeas to prevent stormwater contamination. 2) Materials handling and spill prevention: Where materials can ' act stormwater runoff, practices that reduce the potential for contamtnanon shall be described and implemented. For example, materials should be stored and handled in covered areas to prevent contact with stormwater; chemicals should be stored within beans or secondary containment devices to prevent leaks and spills from entering stormwater runoff. 3) Sediment and' erosion prevention: Describe practices that will be used to reduce erosion and prevent sediment delivery to State waters. These could include stmctural (such as silt fences, sediment ponds, drop stmctures, check dams) and non-structural (such as mulching and revegetation) methods. In each case where stotmwater pollution potential exists, appropriate preventive measures must be identified and implemented. c) Preventive Maintenance -The SWMP shall identify a preventive maintenance program. This program shall involve maintenance of stormwater management devices (maintenance of dikes sepazatmg mine drainage from stormwater, cleaning- oiUwater separators and catch basins, etc.) as well as inspecting and testing of equipment and systems to prevent conditions that could cause breakdowns or failures resulting in discharges of pollutants to surface waters. d) Good Housekeeping -The SWMP shall identify good housekeeping procedures that will be followed by the mining operation. Good housekeeping requees the maintenance of a clean, orderly facility. This part of the SWMP shall address cleaning and maintenance schedules, trash disposal and collection practices, grounds maintenance, etc. e) Splll Prevention and Response Procedures -Areas where potential spills can occur, and their accompanying drainage points, shall be identified clearly in the SWMP. Where appropriate, spectfying material handling procedures and storage requirements in the plan shall be considered. Procedures for cleaning up spills shall be identified in the plan and made available to the appropnate personnel. The necessary equipment to mtplement a clean-up shall be available to personnel. f) Employee Education -The SWMP shall describe employee education programs to inform personnel at all levels of responstbiLttyy (who aze involved in mining activities that ma impact storrttwater runoff) of the components and goals of the SWMP. Education shall address toptcs such as spill response, good housekeeping and material mansgement practices. The SWMP shall identify periodic dates for such insttuction. Contractor or temporary personnel shall be utformed of mine operations and control features in order to prevent stormwater pollution from occumng. g) Idenfification of Dischazgges other than Storrnwater -The stormwater conveyance system on the site shall be evaluated for flte presence of dischazges other than stormwater. The SWMP shall include a description of the resuls of any evaluation for the presence of dischazgges other than stormwater, the method used, the date of any evaluations and the on-site drainage points that were duectly observed during the evaluation, A number of dischazges other than stormwater ma not require a CDPS Wastewater Dischazge permit and are considered Allowable Non-stormwater Dischazges. These aze hsfed at Part I)D.3, below. Any of these discharges that exist at the site must be identified in the SWMP. v) Cot~rehensive Inspection The SWMP shall identify qualified personnel that shall inspect designated equipment and mine aeeas at appro riate intervals specified in the plan, at least twice a yeaz (in the spring and fall). The operator shall keep a record otpsuch inspections. Thts record shall be made available to the Division upon request and summar;~ed in the Annual Report (see Part LE.1 of the pemtit). vi) Consistencv with Other Plans SWMPs may reflect requirements for S ill Prevention Control and Countermeasure SPCC) plans under section 311 of the CWA, or Best Management Practices ~BMPs) Progams otherwise required by a C PS permit, and may incorporate any part of such plans into the SWMP by reference. The SWMP ma rely upon information developed for other similar pollution control pro~ggrrams, including the Mined Land Reclamation Plan. Appropriate portions of these other plays maybe incorporated in the SWMP by reference, as long as a complete SWMP can be reproduced and submitted to the requeshno agency within the time frame specified in the request. Those portions of the referenced documents must be included in the submrrtal. The SWMP must also be readily avaiIable to an on-stte inspector. The Stormwater Management Plan (SWMP) for West Elk Mine shall be developed to cover the inactive pportions of the mine. The plan shall tdentrfy potential sources of pollution (including sediment) which may reasonably be expected to affect the quality of stormwater dischazges associated wrth the inactive mining operation. In addition, the plan shall descnbe and ensure the implementation of best management practices (BMPs) which will be used to reduce the po lutants in siormwater discharges assoctated with the inactive rmntng operation and to assure compliance with the terms and conditions of this permit. Revised 4/I9l2009