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iii iiiiuiiiiiu iii <br />999 <br />C c~RUs <br />~ Yampa Valley <br />Cyprus Yampa Valley Coal Corporation <br />29567 Routt County Road #27 <br />Oak Creek, Colorado 80467 <br />303-879-3800 <br />August 13, 1993 <br />RECEl1>C_[; <br />AUG 17 1993 <br />DlVlslon QI A941Qi diS 6 ,ark ~y) <br />Kent Gorham <br />Reclamation Specialist <br />Division of Minerals and Geology <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />Re: Implementation of Pond A Plan for Abatement: Notice of Violation tJC-93-080: <br />Permit C-81-071. Mines 1, 2, and Eckman Park <br />Dear Mr. Gorham: <br />This letter is to confirm to the Division that the required implementation of the referenced <br />plan for abatement of NOV # C-93-080 was initiated at 0915 hours on August 11. <br />Implementation steps taken at that time were to maintain the two orifices of the third row <br />which are presently open, and to open the sluice-gate to further dewater Pond A . <br />Dewatering will occur to a point which will allow the removal of the two remaining plugs <br />in the third row of riser orifices along with any further maintenance of the two orifices <br />currently unplugged. A full suite NPDES sample was collected immediately after opening <br />the sluice-gate, and there were no visual indications of a possible water quality concern. <br />The dewatering activity associated with the sluicegate will be monitored with normal <br />sampling to allow for representative water quality data to be obtained. Once the plugs <br />have been removed, CYCC will close the sluice-gate and will not utilize the gate in the <br />future unless required. Removal of additional riser orifice plugs should address the issues <br />associated with the referenced NOV. Implementation of the revised plan has commenced <br />within the timeframes stipulated by the referenced NOV. <br />Should you have any questions or comments, please contact me at your convenience. <br />Sincerely, <br />~~~%~~`~ <br />Marcus A. Middleton <br />Environmental Specialist <br />