2012-07-11_PERMIT FILE - C1980006

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PARTI Page No. 8 Permit No. COG-850000 EFFLUENT LII~IITATIONS AND MONITORING REQUIREMENTS 2. Stormwater Management Plan (SWMP) (continued) 3) Stormwater Quality Controls Each mining site covered by this permit shall develop a description of s[ormwater quality controls appropria[e for that site, and implement such controls. The appropriazeness and priorities of convols in the plan shall reflect identified potential sources of pollutants at the 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 its implementation, maintenance, and revision. b. Materials Handline and Soill Prevention -Where materials can impact stormwater runoff, BMPs that reduce the potential for contamination shall be described. For example, materials should be scored and handled in covered areas whenever possible to prevent contact with stormwazer; fuels and other chemicals should be stored within berms or secondary contaitunent devices [o preven[ leaks and spills from entering s[ormwater runoff. c. Erosion and Sedimen[ Controls - Describe BMPs that will be used to reduce erosion and prevent sediment delivery to State waters. These should include structural (such as silt fences, sediment ponds, drop structures, check darns) and non-structural (such as mulching and revegetation) methods. Whenever a facility or a portion of a facility enters the Host-minine phase, it is likely that the overall configuration of the si[e will change considerably. Prior to the time when new vegetation becomes established, the surface areas will be subject to potentially significant erosion. The permittce will need to take adequate treasures in order to minimi~r this erosion as well as the erosion normally encountered during mining activities. d. Identification of Discharees other than Smrmwater -The stormwater conveyance system on the site shall be evaluated for the presence of discharges other than stormwater, such as mine drainage, spoil springs, sanitary waste, or process wa[er of any kind. The SWMP shall include a description of the results of any evaluation for the presence of discharges other than stormwater, the method used, the date of the evaluazion, and the on-site drainage points that were directly observed during the evaluation. b) Facility Inspections Qualified personnel identified by the operaor shall make a comprehensive inspection of their stotmwazer management system, az leas[ twice per year (ia the spring and falq, except as provided in paragraphs d and e, below. These comprehensive inspections must be documented and summarized in the Annual Report (see Part I.D.2. of the permit). I) Material handling areas, disturbed areas, areas used for material storage that are exposed to precipitation, and other potential sources of pollution identified in the SWMP in accordance with Part 1.B.2.a)1) of this permit shall be inspected for evidence of, or the potential for, pollutants entering the drainage system. Structural stormwater management measures, sediment and control measures, and other structural pollution prevention measures identified in the plan shall be observed to ensure that they are operating correctly. A visual inspection of equipmem needed to implement the plan, such as spill response equipment, shall be made. . 2) Based on the results of the inspection, the description of potential pollutant sources and pollution prevention measures identified in the plan shall be revised as appropriate within two weeks of such inspection. Such revisions shall provide for implementation of any changes to the plan in a timely manner, but in no case more than 90 days after the inspection.