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4. Stormwater Management Controls <br />Each mining operation certified under by this permit shall develop a description of stormwater <br />quality contra/s appropriate for that site, and implement such controls. 77ee appropriateness and <br />priorities of controls in the plan shall reflect idenlrJted potential sources ojpoUutants at the <br />mining sites Tire description of stormwater quality controls shall address the jollowing minimum <br />rnmponents, including a schedule jar implementing such contra/s: <br />a. SWMP Administrator -The SWMP shall identify a specific individual or individuals within the <br />mining organization who is responsible for developing the SWMP and assisting the mine operator <br />in its implementation, maintenance, and revision. The activities and responsibilities of the <br />administrator should address all aspects of the facility `s SWMP. <br />b. Idennjieation of Potential Pollutant Sources and Best Management Practices -The SWMP <br />shall identify potential sources of pollutants at the site, and assess the potential ojthese souuces to <br />contribute pollutants to starmwater discharges associated with mining activities 77te SWMP must <br />also describe appropriate Best Management Practices (BMPs) to reduce the potential of these <br />sources to contribute pollutants to stormwater disckarges At a minimum, each ojthe jollowing <br />shall be evaluated for the reasonable potential for contributing pollutants to runoJ)i <br />-loading and unloading operations; <br />-outdoor storage of chemicals or equipment; <br />-outdoor milling or processing activities; <br />-historic mine drainage; <br />- tailings ponds; <br />- crushing facilities or significant dust and particulate generating activities; <br />- on-site waste disposal practices; and <br />- stockpAes ojoverburden, raw material, intermediate products, byproducts, finished products or <br />waste products <br />Factors to consider include the toxicity ofthe material; quantity of chemicals used; amount of <br />material processed; the likelihood of contact with sformwater; and history of significant drainage, <br />leaks or spills of toxic or hazardous pollutants. <br />The description of the BMPs steal/ iaclude: <br />I) Stormwater diversion: Describe how and where stormwate- will be diverted away from material <br />handling and storage areas to prevent stormwater contamination. <br />2) Materials handling and spill prevention: Where materials can impact stormwater runoff, <br />practices that reduce the potential for contamination steal/ be described and intplementeQ For <br />example, materials should be stared and handled in covered areas to prevent contact with <br />stormwater, chemicals should be stored within berms or secondary containment devices to prevent <br />leaks and spills from entering stormwater runoff. <br />3) Sediment and erosion prevention: Describe practices that will be used to reduce erosion and <br />prevent sediment delivery to State waters These could include structural (such as silt fences, <br />sediment ponds, drop structures, check dams) and non-structural (such as mulching and <br />revegctation) methods <br />In each case where stormwater pollution potential exists, appropriate preventive measures must <br />be identified and implemenleQ <br />7:V~1'vies~SwmpVStmmwater Mgt Tenn HASIC FORM <br />Revised April S, 1999 <br />