2008-02-27_PERMIT FILE - M2008012

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part I Page 9 of ?2 permit No. COR-040000 C. STORMWATER MANAGEMENT PLAN - INACTIVE MII~TES (s°at.) 2. ~itc Mau Each plan shall provide a generalized site map or maps which indicate arty of the following which may Ise applicable: mining/milling sits boundaries and access and haul roads; equipment storage, fueling and amimenance areas; - materials handling areas; - areas used for storage of overmrrden, materials. soils, tailings or wastes; - areas used for outdoor ctming, heap leach pads, storage or disposal of materials; - location of mice drainage or any other process water; - tailings Piles and ponds; - an estimate of the diroction(s) of surface flow; to each outfall; - stormwatar outfalls and an approximate outline of the areas draining - esristing stnrcdsral control to reduce pollutants in stomtwater runoff; . cgs, , wedauds and other surface waters; and -all areas of soil disturbance. 3. ,Sato ter Mg>,a+-emeat Controls Ideo-HtHicatton of Sources and Best MaRg+~~t racticea Each mining site certified under by this Permit shall develop a description of stormwaier quality controls appropriate for that site, and implement such controls. The appropriateness and priorities of controls in the plan shall reflect identified potential sources of polhttants at the mining site. The description of storma+ater quality controls shall address the following mininarm including a schedule for implementing such controls. Fornewly-c«tified facilities, if existing contr°ls are inadequate to achieve the geaeial objective of controlling pollutants is stormwater discharges associated with industrial activity, any schedule to implement additional controls to meet this objective shall not exceed fi0 days from when tin; facility begins operations, or fmm when the general permit certification is issued, ~vhiehever is htter, unless Permission for a later deadlare is obtained from the Division. New controls that will rephtce or modify ezistiog controls that are already adequately addressing a poUwtant spruce are not repaired to meet this schedule (e.g., rephuti~ a ootwrol with a less resoiuce- intensive practice). a. SWMP Administrator -The SWMP shall identify a specific individual or individuals within the mining organization who is responsible for developing the SWiV>p aml assisting the mine operator in its ionplemeatation, maintenance, and • revision. The activities and responsibilities of the administrator shall address all aspects of the facility's SWMP. b. Identffical4osr of Potential PMintant Sources and Best Management Pradices -The SVUMP small identify potenial sources of pollutants at the site, and assess the potential of these sources to oontn'brrte polhrtaats to stormwa~r discharges associated arith mining activities. The SWMP must also desenbe appropriate Best Management Practices (BMPs) to reduce the potential of these sources to centnbute pollutants to stormwater discharges. At a minirraum, each of the following small be evaluated for the reasonable potential for conhtbuting pollutants to runoff: . outdoor storage of chemicals or equipmenfi - on-site waste disposal practicxs; - overburden, raw material, intermediate products, byproducts, finished Products or waste prodtrces; and - disturbed areas Factors to consider include the toxicity of the material; quantity of chemicals used; the likelihood of contact with stormwater, and history of significant drainage, leaks or spilht of tosdc or hazardous polhrtants. The description of the BMPs shall include: 1) Storntwater Diversion: Describe how and where stortrnvater will be diverted away from potential pollutant sources m prevent stormwater contamination 2) Sediment sad Erosion Prevention: Descnbe practices that will be used to reduce erostoa and P sedmsent delivery to State waters. These could include strucuual (such as silt fences, sediment ponds. drop structures, check dams) and non-structural (such as mulching and revegetation) nxthods.