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,.. r~'F,'~'~, <br />j LE SPY <br />C crpsus <br />'~ lfamps Yallsy <br />July 25, 1991 <br />Ms. Anne Ihlenfeldt <br />Colorado Department of Health <br />Attention: Permits and Enforcement <br />Water Quality Control Division <br />4210 East 11th Avenue <br />Denver, CO 80220 <br />Dear Ms. Ihlenfeldt: <br /> <br />Cyprus Yampa Vatley Coal Corporation <br />29587 Routt County Road #27 <br />Oak Creek, Cokxado 80x67 <br />303.879800 ' <br />fig; DiccharEg, Monitorin~Re~ort for NPDFS Permit CO-0042161 Fish Creek <br />~rehole <br />Enclosed please find the Dischazge Monitoring Report for the SECOND QUARTER of 1991 for <br />the above-referenced permit. Please note that an exccedence for TR Iron was rewrded, as the <br />Department had been informed by phone eazliec. Per my conversation with Ms. Nelson on 24 <br />July, those values for TSS and TR Iron normally based on the average of one sample/month are <br />based only on results from April and May, as the sample collected 25 June was somehow lost. <br />Due to the pumping system, another sample could not be collected until 1 July, the analysis for <br />which has been enclosed. TCC feels that this sample is representative of effluent quality during <br />the month of June, given the short time between collection of the lost sample and collection of <br />the sample 1 July. Attempts were made to collet a sample 29 June and 30 June, but the pumps <br />did not activate until the eazly morning of 1 July. TCC apologizes for this oversight, and steps <br />have been taken to prevent recurrence. <br />Also discussed with Ms. Nelson was the current status of the Pilot-test plant design proposal <br />responses solicited by TCC. As discussed previously, TCC solicited proposals in mid-June, but <br />received no response due to the requested tie frame. After contacting the Department to such <br />effect, TCC again solicited proposals in early July, with fmal responses received 15 July. <br />Due to the conjunction of greater than expected time frames requirements and the number of <br />questions left unanswered by the proposals, TCC wishes to have a second treatability study <br />conducted in order to identify the most efficient and cost effective treatment option. The time <br />frame of this study would be 1/4 to 1/3 of that required to perform the pilot plant testa nd the <br />results are projected to address more options than possible with a pilot facility. It is anticipated <br />that the treatability study could be completed by mid-October and would provide the information <br />necessary to discuss a subsequent course of action with the Department. <br />