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PART I Page 7 of 20 Permit No. COR-040000 B. STORMWATER MANAGEMENT PLAN -ACTIVE MINES (contJ 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 haurdous pollutants. The description of the BMPs shall include: 1) Stotmwater diversion: Describe how and where stormwa[er will be diverted away from material handling and storage aeeas to prevent stormwater contaminazion. 2) Materials handling and spill prevention: Where rr[azerials can impact stormwa[er runoff, practices that reduce the potential for wntamina[ion 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 [o reduce erosion and prevent sediment delivery to.State wazers. These could include structwal (such as silt fences, sediment ponds, drop structures, check dams) and non-structural (such as mulching and revege[ation) methods. In each case where stormwater pollution potential exists, appropriate preventive measwes must be identified and implemented. c. Preventive Maintenance -The SWMP shall idrntify a prevrntive maintenance program. This program shall involve maintenance of stormwazet management devices (maintenance of dikes sepazazing mine drainage from stormwater, cleaning oil/water sepazazors and catch basins, etc.) as well as inspecting and testing of equipment and systems to prevrnt wnditioas that could muse breakdowns or failwes resulting in discharges of pollutants to surface waters. d. Good Housekeeping -The SWMP shall idrntify good housekeeping procedures that will be followed by the mining operation. Good housekeeping requires the maintenance of a clean, orderly facility. This pan 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 occw, and their accompanying drainage points, shall be identified clearly in the SWMP. Where appropriate, specifying material handling procedures and storage requirements in [he plan shall be considered. Procedures for cleaning up spills shall be identified in the plan and made. available [o the appmpriaze personnel. The necessary equipment to implement a clean-up shall be available [o persomel. f. Employee Education -The SWMP shall describe employee education programs to inform personnel at all levels of responsibility (who are involved in mining activities thaz may impact stotmwater runoff) of the componenu and goals of the SWMP. 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 informed of mine operazions and convol featwes in order to prevent stormwater pollution from occurring. g. Identification of Discharges other than Stormwater -The stormwater conveyance system on the site shall be evaluated for the presence of discharges other than s[ormwater. 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 [he evaluation. A number of discharges odter than stormwazer may not require a CDPS Wastewater Discharge permit and aze considered Allowable Non-stormwater Dischazges. These are listed at Pan I.D.3, below. Any of these discharges that exist at [he site must be identified in the SWMP.