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PART Page No. Permit No. COG-SSOOOf _ B. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS 2. StormwaterManaeementPlan(SWMPI(continued) ~' c. Erosion and Sediment Controls -Describe BMPs that will be used to reduce erosion and prevent sediment delivery to State =- waters. These should include smctural (such as silt fences, sediment ponds, drop structures, check dams) and non- ~ structural (such as mulching and revegetation) methods. ' Whenever a facility or a portion of a facility enters the post-rninine phase, it is likely that the overall co~guration of the site will change considerably. Prior to the time when new vegetation becomes established, the surface azeas will be subject to potentially significant erosion. The petmittee will need to take adequate measures in order to minimize this erosion as well as the erosion normally encountered during mining activities. d. Identification of Dischazees other than Stotmwater -The stormwater conveyance system on the site shall be evaluated for the presence of dischazges other than stotmwater, such as mine drainage, spoil springs, sanitary waste, or process water o} any kind.. The SWMP shall include a description of the results of any evaluation for the presence of discharges other than stotmwater, the method used, the date of the evaluation, and the on-site drainage points that were directly observed doting the evaluation. b) Faciliri Inspections Qualified personnel identified by the operator shall make a comprehensive inspection of their stotmwater management system, at least twice per yeaz (in the spring and fall), except as provided in paragraphs d and a,below. These comprehensive inspections must be documented and st~**+**+ari~ed in the Annual Report (see Part I.D.2. of the permit). 1) Material handling azeas, disturbed azeas, azeas used for material storage that aze exposed to precipitation, and other potential sources of pollution identified in the SWMP in accordance with Part I.B.2.a)1) of this permit shall be inspected for evidence of, or the potential for, pollutants entering the drainage system. Structural stotmwater management measures, sediment and control measures, and other stmctural pollution prevention measures identified in the plan shall be observed to ensure that they aze operating correctly. A visual inspection of equipment 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 [Wanner, but in no case more than 90 days after the inspection. 3) A report ~+~**++*+ari~ing the scope of the inspection, personnel making the inspectioq the date(s) of the inspection, major observations relating to the implementation of the SWMP, and actions taken in accordance with pazagraph (b), above, shall be made and retained as part of the S WMP for at least three years. The report shall be signed in accordance with Part LD.7. of this permit. 4) Where semi-annual site inspections aze shown in the plan to be impractical for sites where an erttployee is not stationed or does not routinely visit the site, inspections as required in this part shall be conducted at appropriate intervals specified in the plan, but never less than once in two years. 5) Where semi-annual site inspections are shown in the plan to be impractical for inactive sites (sites where industrial activity is no longer conducted), site inspections required by this part shall be conducted at appropriate intervals specified in the plan, but, in no case less than once in three years. At lease one site inspection requred under this part shall be conducted before October 1, 1999, or the date two years after such site becomes inactive, whichever is eazlier. c) Additional SWMP Requirements 1) Signatory Requirements: A copy of the plan shall be signed in accordance with Part LD.7. and retained on site. 2) SWMP Review/Changes: Upon review of the S WMP, the Division may notify the permittee at any time that the plan does not meet one or more of the minimum requirements of this permit. After such notification, the permittee shall make changes to the plan and shall submit to the Division an update to the plan including the requested changes. Unless otherwise provided by the Division, the permittee shall have 30 days after such notification to both make the necessary changes to the plan and to implement them.