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666 <br />III IIIIIIIIIIIII III <br />000 <br />Twentymile Coal Company <br />29515 Routt County Road # 27 <br />Oak Creek, Colorado 80467 <br />(970)879-3800 <br />October 30, 2001 <br />Ms. Coda Lenkey <br />Colorado Department of Public Health and Environment <br />Water Quality Control Division -Permits and Enforcement <br />4300 Cherry Creek Drive South <br />Denver, CO 80222-1530 <br />o~RFc~~~Fp <br />o;~,s. 3 <br />neja/S4 <br />G~~i <br />SUBJECT: PERMIT NOS: CO-0036684: CO-0027154: CO-0042161- 3RD QUARTER 2001 DMR SUBMITTALS <br />Dear Ms. Lenkey: <br />Enclosed are copies of DMRS for the subject permits. The following letter reiterates items discussed during our telephone <br />conversation of this day. <br />• Mr. Rick Mills, our Environmental Manager, and Gary Buchan, our Engineering Manager, were physically unavailable <br />to sign our DMRS for this period, which should have been mailed by Monday October 29th. On Tuesday, October 30, <br />Mr. Mill was available to sign these DMRS. I will forward the DMRS, via next day mail, which should have them <br />arriving to you sooner than had we used U.S. Postal on the 29th. <br />• During the 3rtl quarter, Outfall 001 X (Permit CO-36684) was inadvertently analyzed for the more stringent chronic <br />WET testing for two species this quarter, as opposed to newly required acute WET testing for one species. Future <br />quarterly samples will be analyzed for acute WET testing, as outlined in the revised CDPS that went into effect in <br />August 2001. TCC is hoping that this error will not be considered a deficiency, since the test ran was more sVingent <br />and still passed. <br />• Under DMR Permit CO-0042161, Outtall 001 X, page 1 second row, there is a listed limitation: "100.0001 MN Value", <br />for the WET test: "%Eflect Statre 7 Day, CHR CERIODAPHNIA TCP38 S 0 0". The value we reported for this <br />category is 75 %. In talking with our lab and reviewing the permit requirements, this WET test passed. The <br />100.0001 MN Value listed in the DMR may be in error, and as such, TCC did not record this as an exceedence on the <br />DMR. <br />Thank you for your time and input on these items. If you have any questions, please wntact me directly at (970) 870-2750. <br />Twenntymile Coal Compan~ <br />/ ( ~~ <br />Brian Watterson <br />Environmental Geologist <br />Enclosures <br />cc: DMG <br />