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<br />1 <br /> <br />1 <br />1 <br /> <br />t <br /> <br />1 <br />1 <br /> <br /> <br />Minrec, Inc. - North Thompson Creek Mine <br />Stormwater Management Plan <br />Page 3 <br />Vegetation will be the primary sediment control feature for <br />the; 1) No. 1 Mine Portal Area; 2) The Fan Area and; 3) <br />sediment pond outslopes. If rills occur on the sites, they <br />will be repaired. Vegetation will be reseeded and mulched if <br />necessary. <br />A vegetation survey of the reclaimed mine sites was performed <br />during July 1992. The survey shows that the disturbed areas <br />at the mine site have been vegetated and stabilized. <br />Calculations presented in Minrec's Division of Minerals b <br />Geology Permit document (C-81-025), demonstrate that run-off <br />from the reclaimed areas does not contribute additional <br />suspended solids above natural conditions. Therefore, <br />sedimentation control in the form of the sediment ponds is no <br />longer required. The only pond that may be reclaimed in the <br />near future is sediment pond P-3. Both sediment pond P-9 and <br />the Refuse Pond will be left in place for many years. <br />If sediment pond P-3 is reclaimed, then vegetation will be the <br />primary sediment control feature for the No. 3 Mine Site and <br />the Tank Area. Both of these areas were included in the <br />vegetation study explained above, so the vegetation on the two <br />areas is adequate to control erosion. <br />5. Comprehensive Insnection <br />SWMP Administrator: The individuals within the mining <br />organization responsible for developing the SWMP and <br />implementation of the plan are Jim Stover and L. Rirt Jewkes <br />with J. E. Stover & Associates, 2768 Compass Drive, STE 101, <br />Grand Junction, CO, 81506, phone 245-4101. <br />' One of the individuals identified above will inspect the <br />stormwater management controls at least once each year. The <br />inspection will note the condition of the pond, ditches and <br />berms, the vegetation on the site and specifically the <br />vegetation at the No. 1 Mine portal area, fan site, sediment <br />pond outslopes, No. 3 Mine Site and tank area. <br />' A written report or form will be kept at the mine office to <br />document the comprehensive inspections. <br /> <br /> <br />1 <br />1 <br />