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8. Colowyo continues to sample all discharges from sediment control ponds with <br />manual dewatering devices to ensure compliance with the effluent standazds in the <br />current General Permit No. COG-850017. Colowyo samples these dischazges at the <br />monitoring frequency specified in Permit No. COG-850017, Part I, B. 3. a., <br />regazdless of whether the dischazge is continuous or intermittent. Colowyo is <br />committed to conduct sampling at the frequencies specified in the draft Permit No. <br />CO-0045161 upon its issuance. <br />9. Clarification is required from the CDMG as to the intent of their comment in this <br />pazagraph. Colowyo operates sediment control ponds which aze designed to "settle" <br />out solids before dischazging the cleaz water to waters of the State. Colowyo's <br />regulated ponds aze not "erosion" control reservoirs' as the CDMG implies in their <br />comment. <br />Please refer to the GENERAL COMMENTS section of the letter for a discussion of <br />the present and future operation of Colowyo's sediment control ponds. The CDMG <br />has copies of all of Colowyo's hydrological modeling and the CDMG is encouraged <br />to review each modeling effort. Colowyo would be pleased to review pond <br />hydrology/sedimentology models with the CDMG. <br />Colowyo believes it has been and will continue to be in compliance with all <br />applicable Federal and State laws and regulations regazding the design, construction, <br />and maintenance of sediment control ponds. All pond designs have been reviewed <br />and approved by the CDMG prior to construction. We believe that with Colowyo's <br />past 19 yeaz commitment to meeting compliance requirements imposed by all <br />regulatory agencies and the frequency of the CDMG inspections, it is unlikely that <br />Colowyo could have designed, constructed, maintained, and operated a sediment <br />control pond out of the scope of the specific applicable regulations. <br />Colowyo believes it does dewater its sediment control ponds in accordance with <br />"applicable State laws," which we interpret to mean our current General Permit No. <br />COG-850017. Similarly, Colowyo is committed to continue to operate in accordance <br />with "applicable State laws" when the new Permit No. CO-0045161 is issued. <br />10. Colowyo assumes the WQCD would inform the CDMG of proposed changes to <br />Colowyo' s dischazge permit, and has no objection to such communication. <br />11. Please refer to the GENERAL COMMENTS section of the letter for a discussion of <br />the present and future operation of Colowyo's sediment control ponds. The CDMG <br />has copies of all of Colowyo's hydrological modeling and the CDMG is encouraged <br />9 <br />