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PART I Page No. 12 Permit No.: CO-0038776 2. Stormwater Requirements a. Storrnwater Management Plan (continued) 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) Stormwater diversion: Describe how and where stormwater will be diverted away from material handling and storage areas to prevent stortnwater contamination. 2) Materials handling and spill prevention: Where materials can ' act stormwater runoffs ppractices that reduce the potential for contarninahon shall be described and implemented. For example, rnatenals should be stored and handled in covered areas to prevent contact with stormwater; chemicals should be stored within berms 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 revegetahon) methods. In each case where storrriwater 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 sepazahng mine drainage from stormwater, cleaning- oillwater separators and catch basins, etc.) as well as inspectingg 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 o eration. Good housekeeping requires 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) Spill Prevention and Response Procedures -Areas where potential spills can occur, and their accompanying drainage points, shall be identified clearly in the SWMP. Where appropriate, specifying 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 appropriate personnel. The necessary equipment to vnplement 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 responsrbtLry (who are involved in mining activiries that may rmpac[ stormwater runoff) of the components and goals of the S Education shall address topics such as spill response, good housekeeping and material management practices. The SWMP shall identify periodic dates for such instruction. Contractor or temporary personnel shall be uiformed of mine operations and control features in order to prevent stormwater pollution from occuning. g) Identification of Discharges other than Stormwater -The stormwater conveyance system on the site shall be evaluated for the presence of discharges other than stormwater. The SWMP shall include a description of the results of any evaluation for the presence of dischazges other than stormwater, the method used, the date of any evaluations and the on-site drainage points that were directly observed during the evaluation. A number of discharges other than stormwatet ma not require a CDPS Wastewater Dischazge permit and are considered Allowable Non-stormwater Dischazges. These aze listed at Part I)D.3, below. Any of these dischazges that exist at the site must be identified in the SWMP. v) Comprehensive Inspection The SWMP shall identify qualified persoanel that shall inspect designated equipment and mine areas at appropriate intervals specified in the plan, at least twice a yeaz (in the spring and fall). The operator shall keep a record of such inspections. This record shall be made available to the Division upon request and summarized in the Annual Report (see Part LE.I of the permit). vi) Consistencv with Other Plans S WMPs may reflect requirements for Spill Prevention Control and Countermeasure (SPCC) plans under section 311 of the CWA, or Best Management Practices (BMPs) Programs 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 ams, including the Mined Land Reclamation Plan. Appropriate portions of these other plans maybe incorporated in the by reference, as long as a complete SWMP can be reproduced and submitted to the requesting agency within the time frame specified in the request. Those portions of the referenced documents must be included in the submittal. The SWMP must also be readily available to anon-site inspector. The Stormwater Management Plan (SWMP) for West Elk Mine shall be developed to cover the inactive portions of the mine. The plan shall identify potential sources of pollution (including sediment) which may reasonably be expected to affect the quality of stormwater discharges associated with the inactive mining operation. In addition, the plan shall describe and ensure the implementation of best management practices (BMPs) which will be used to reduce the pollutants in stonnwater discharges associated with the inactive mining operation and to assure compliance with the temu and conditions of this pemut. Revised 4/I9/2004