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<br /> <br />COLORADO DEPARTMENT OF HEALTH <br />Water Quality Control Division <br />Certification - Page 3 Permit No. COG-500136 <br />VI. DISCUSSION: <br />n <br />u <br />Applicable effluent limitations and monitoring requirements regarding <br />active mining outfalls are addressed in Part I.B.(1-4) of the general <br />permit. <br />Total dissolved solids monitoring of the discharge shall be required. <br />Total phosphorous monitoring shall not be required. See Part I.B.3 of the <br />general permit and Part V.A. of the rationale for more information. <br />The Permittee will be required to develop and implement a Storm Water <br />Management Plan (SWMP). The plan shall identify potential sources of <br />pollution (including sediment) which may reasonably be expected to be <br />affect the quality of stormwater discharges associated with the mining <br />activity. In addition, the plan shall describe and ensure implementation <br />of best management practices (BMPs) which will be used to reduce the <br />pollutants in stormwater discharges associated with mining activity. <br />Although some activities may already be in place, the SWMP will require <br />the Permittee to coordinate best management practices so the result is a <br />reduction or elimination of pollutants reaching state water from areas not <br />limited by effluent limitations. Significant changes in the permiccee's <br />mining or stormwater management practices may require coordination with <br />the Colorado Division of Minerals and Geology (CDMG) (formerly CMLRD) <br />regarding the facility's mining permit. For specifics of the Plan and <br />additional requirements, see Part I.C. of the general permit. <br />VII. SPECIFIC INFORMATION OF CONCERN TO THE PERMITTEE: <br />The permittee is encouraged to read the <br />understanding of how the general permit was <br />permit itself to see what requirements exist <br />monitoring requirements are specified in <br />notification requirements for effluent viola <br />II.A.3. <br />general rationale for an <br />developed and to read the <br />Effluent limitations and <br />Part I.B., and special <br />:ions are addressed in Part <br />Based on the above information, Delta Sand Gravel Company is certified to <br />discharge from the Pit ~/1 under the general permit for sand and gravel <br />mining and processing facilities, identified as Permit No. COG-500000. <br />All correspondence relative to this facility should reference the specific <br />facility permit No. COG-500136. <br />Completed By: Wes Canter (Science Applications International <br />Corporation) <br />9/4/92 <br />Reviewed By: <br />