2012-06-08_PERMIT FILE - C2009087A (2)

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PART I Page No. 12 Permit No.: CO0048275 - the location of impervious structures (e.g. parking lots, roofs, etc.) iv. Stormwater Management Controls Peabody Energy shall develop a description of stormwater quality controls appropriate for that site, aid implement such controls. The appropriateness and priorities of controls in the plan shall reflect identified potential sources of pollutants at the mining site. The description of stormwater 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 itsimplementation, maintenance, and revision. The activities and responsibilities of the administrator shall address all aspects of the facility's SWMP. b) Identification of Potential Pollutant Sources and Best Management Practices - The SWMP shall identify potential sources of pollutants at the site, and assess the potential of these sources to contribute pollutants to stormwater discharges associated with mining activities. The SWMP must also describe appropriate Best Management Practices (BMPs) to reduce the potential of these sources to contribute pollutants to stormwater discharges. At a minimum, each of the following shall be evaluated for the reasonable potential for contributing pollutants to runoff. - loading and unloading operations; - outdoor storage of chemicals or equipment; - outdoor milling or processing activities; - historic mine drainage; - tailings ponds; - crushing facilities or significant dust and particulate generating activities; practices; and - stockpiles of overburden, raw material, intermediate products, byproducts, finished products or waste products. 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 hazardous 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 stormwater contamination. 2) Materials handling and spill prevention: Where materials can impact stormwater runoff, practices that reduce the potential for contamination 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 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 structural (such as silt fences, sediment ponds, drop structures, check dams) and non - structural (such as mulching and revegetation) methods. In each case where stormwater pollution potential exists, appropriate preventive measures must be identified and implemented. Preventive Maintenance - The SWMP shall identify a preventive maintenance program. This program shall involve maintenance.of stormwater management devices (maintenance of dikes separating mine drainage from stormwater, cleaning oil/water separators and catch basins, etc.) as well as inspecting and testing of equipment and systems to prevent conditions that could cause breakdowns or fail uresresulting 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 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.