2001-12-11_PERMIT FILE - C1981014A (3)

Home Browse Search

PART I Page 7 of 20 Permit No. COR-040000 B. STORMWATER MANAGEMENT PLAN -ACTIVE MINES (cont.) • Factors to consider include the toxicity of the material; quantity of chemicals used; amount of material processed; [he 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 areaz [o prevent stormwater contamination. 2) Materials handling and spill prevention: Where materials can impact stormwater rtirtoff, practices that reduce the potential for contamination shall be described and implemented. For example, materials should be stored and handled in covered areaz 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 az silt fences, sediment ponds, drop structures, check dams) and non-stntctural (such az mulching and revegetation) methods. In each case where stormwater 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 stormwa[er mariagement devices (maintenance of dikes separating mine drainage from stormwater, cleaning oil/water separators and catch basins, etc.) az well az inspecting and testing of equipment • and systems to prevent conditions that could cause breakdowns or failures resulting in discharges of pollutanu to surface waters. d. Good Housekeeping -The SWMP shall identify good housekeeping procedure the[ 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 main[enance 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 cleazly in the SWMP. Where appropriate, specifying rttarerial 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 rite appropriate personnel. The necessary equipment to implement a clean-up shall be available [o personnel. f. Employee Education -The SWMP shall describe employee education programs to inform personnel at all levels of responsibility (who are involved in mining activities that may impact stormwater runoff) of the componen[s and goals of the SWMP. Education shall address topics such az 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 operations and control features in order to prevent stormwater pollution from occurring. - g. IdentiFcation oC Discharges other than Stormwater -The stormwater conveyance system on the si[e shall be evaluated for [he presence of discharges other than stormwa[er. The SWMP shall include a description of the results of any evaluation for the presence of discharges other than stormwater, dte method used, the dale of any evalua[ions and the on-site drainage points that were drrec[ly observed during the evaluation. • A number of discharges other than stormwater may not require a CDPS Wastewater Discharge permit and are considered Allowable Non-stormwater Discharges. These are listed at Part I.D.3, below. Any of these discharge that exis[ at the site must be identified in [he SWMP.