2005-12-02_PERMIT FILE - C1981019

Home Browse Search

PART I Page 9 of 20 Permit No. COR-040000 C. STORMWATER MANAGEMENT PLAN -INACTIVE MINES (cont.) 3. stormwater Manaeement Controls -Identification of Sources and Best Manaeement-Practices The SWMP shall identify potential sources of pollutants at the site and assess the potential of these sources to contribute pollutanss to stormwater discharges associated with mining activities...: The SWMP must also describe appropriate Best Management practices (BMPs) to reduce the potential of [hese sources to contribute pollutants to stormwater discharges. The appropriateness and priorities of controls in [he plan shall reflect identified potential sources of pollutants at the mining site. The description of the BMPs shall include: a. stormwater Diversion: Describe how and where stormwater will be diverted away from potential pollutant sources to prevent stormwater coma.,,+n>r+on. b. Sediment and Erosion Prevention: Describe practices that will be used to reduce erosion aced prevent sediment delivery to State waters. These could include structural (such az silt fences, sediment ponds, drop structures, check dams) and non-stmctural (such az mulching and revegetarion) methods. 4. Comprehensive Inspection The SWMP shall identify qualified personnel that shall inspect designazed azeaz. Inspections required by this pan shall be conducted annually. Where annual inspections are impracticable, certification is required once every three years by a Registered Professional Engineer that the site is in compliance with the SWMP. 5. Additional SWMP Items for Sites Seekine Permit Termination t • Additional requiremrnss apply in the event that the permittee wishes to remediate the inactive mine si[e and terminate permit coverage. If the site is already wvered by this pcratit, the permittce shall notify [he Division az to the change in status. Notification shall be prior to the implementation of the remediation work, if possible. The SWMP must be amended to include the following items, prior to implementation of the remediation work, if possible: a. Documentation of Permission: The plan shall include documentation of permission from the land owner, if the remediation work is undertaken by someone other than the land owner. b. Photographs: The plan shall include photographs documenting the condition of the inactive mine site before any remedial action hazbccurred. For recently active mines, photographs of the active mining phase may be substituted. c. Description of Remedial Action: The plan shall describe [he remedial action tha[ will take place [o minimize or eliminate the water quality impacts from the mine wazte. The description shall include: - Remediation Goal Statement; - the characteristics of the mineralogic content of the mine-ware, and estimated volume of the waz[e; - description of any materials that will be mined into the mine wazte on site; and - estimazed surface area of the final site, and estimated angle of side slopes. d. Description of BMPs during Remediation Activities: The plan shall describe BMPs [hat will be implemrnted to reduce the potential of remediation activities to contribute pollutants to stormwater discharges. Activities that shall be addressed include vehicle maintenance; earth moving, material storage and spill prevention. e. Procedures for Disposal of Water Stored Within Mine Waste: The permi[tee must describe how any water • stored within the mine waste will be collected and/or routed to any storage or [reatment facilities. No discharge of this water shall be made to waters of the state, unless separate permit coverge is obtained. f. Description of Permanent BMPs, Final Site Stabilirrtion, and Ultimate Land Use: The plan shall include a description of the specific permanent meazures that will be installed or used at the mine-waste si[e. The description shall include any of the following if appropriate: specifications for capping or isolation of the