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05/06/99 THU 16:34 FAX 303 7820390 CDPHEi1VgCD 1J004 <br /> From the stormwater general permit for discharges associated with Metal Mining Operations and <br /> Mine-waste Remediation, COR-040000: <br /> S. Additional SWMP Items for Sites Seeking PeaWt Terminah'on <br /> Additional requirements apply in the event that the permittee wishes to remediate the inactive mine site <br /> and terminate permit coverage. If the site is already covered by this permit,the permittee shall notify the <br /> Division as to the change in status. Notification shall be prior to the implementation of the remediation <br /> work, if possible. The SWMP must be amended to include the following items, prior to implementation <br /> of the remediation work, if possible: <br /> a. Documentation of Permission The plan shall include documentation of permission from the land <br /> owner, if the remediation work is undertaken by someone other than the land owner. <br /> b. Photographs: The plan shall include photographs documenting the condition of the inactive mine site <br /> before any remedial action has occurred. For recently active mines,photographs of the active mining <br /> phase may be substituted. <br /> c. Description of Remedial Action: The plan shall describe the remedial action that will take place to <br /> minimize or eliminate the water quality impacts from the mine waste. The description shall include: <br /> - Remediation Goal Statement; <br /> - the characteristics of the m ineralogic content of the mine-waste, and estimated volume of the waste, <br /> - description of any materials that will be mixed into the mine waste on site: and <br /> - estimated surface area of the final site,and estimated angle of side slopes. <br /> d. Description of BMPs during Remediation Activities: The plan shall describe BNiPs that will be <br /> implemented to reduce the potential of remediation activities to contribute pollutants to stormwater <br /> discharges. Activities that shall be addressed include vehicle maintenance,earth moving,material <br /> storage and spill prevention. <br /> e. Procedures for Disposal of Water Stored Within Mine Waste: The permittee must describe how <br /> any water stored within the mine waste will be collected and/or routed to any storage or treatment <br /> facilities. No discharge of this water shall be made to waters of the state.unless separate permit <br /> coverage is obtained. <br /> f. Description of Permanent BMPs,Final Site Stabilization,and Ultimate Land Use: The plan shall <br /> include a description of the specific permanent measures that will be installed or used at the mine- <br /> waste site. The description shall include any of the following if appropriate: specifications for capping <br /> or isolation of the mine waste,method and type of revegetation,and other permanent BMPs. The plan <br /> shall also include a description of the ultimate land use after remediation is complete. <br />