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7~ <br />COLORADO YAMPA <br />COAL COMPANY <br />A Cyprus Amax Company <br />June 23, 1998 <br />iiiiiuiiiiiii <br />Colorado a atnpa ses _ _ __-~ .ty G~ <br />29515 Routt County Road #27 <br />Oak Creek, Colorado 80467 <br />(970) 879-3800 <br />Ms. Carla Lenkey RECEIVED <br />Colorado Department of Public Health and Environment <br />Water Quality Control Division -Permits and Enforcement 'JUN 2 5 1998 <br />4300 Cherry Creek Drive South <br />Denver, CO 80222-1530 Division of Minerals 8 Geology <br />RE: PERMIT CO-0027154: MAY 1998 DMR SUBMITTAL <br />Dear Ms. Lenkey: <br />Please find enclosed the above referenced discharge monitoring report for the period of May 1, 1998 through <br />May 31, 1998. No permit limitation exceedences occurred during the quarter. <br />Outfalls 001 and 005 both had in-house WET tests conducted in the month of May. Because of the extra visits <br />to these sites, more field parameters are figured into the statistic reported on the DMRs. <br />Outfall 002 did not flow during the second half of May. Outfall 006 only discharged on the 11th of May during this <br />reporting period. Outfall 007 only discharged in the middle of the month, but the required WET tests were able <br />to be performed during this time period. ~~ <br />Outfalls 001, 005, and 007 are being tested for Hardness in addition to the required parameters. TCC is conducting <br />some internal sampling to further explain some issues that have previously been in question with the NPDES <br />requirements. A copy of these results is included in the submittal. <br />Outfalls 004 and 008 did not discharge during this period. Outfall 020 has not been constructed yet; therefore, <br />there is no discharge to enable chemical or toxicological testing [o date. <br />Please contact me a[ (970) 879-3800, ext. 2805 for any further questions or additional information. <br />Colorado Y a Coal om an ~` <br />P~~ P Y j...-. _ <br />,Z'Y <br />GL ~~ <br />Ste anie 5. Carter <br />nvironmental Specialist <br />enclosures <br />cc: DMG <br />CWPS Permit No. CO-0027154 file <br />