HYDRO26446 - Laserfiche WebLink

Home Browse Search

iiiiiiniiiuiiiiii ©0~ Twentymile Coal Company 29515 Routt County Road # 2~ October 29, 2001 Oak Creek, Colorado 80467 ~CF~ (970) 879-3800 QED Ms. Carla Lenkey Q Colorado Department of Public Health and Environment CT 31 ZOQ~ DeOnOverO, C080222 ~5gp South Permits and Enforcement f7ivlstcnofM~neralsaGeol / RE: PERMIT CO-0027154: 3rtl QUARTER/OCTOBER 2001 DMR SUBMITTAL oO~ Dear Ms. Lenkey: Please find enclosed the above referenced discharge monitoring report for the period August 1, 2001 through August 31, 2001. During this period, only ponds A (Ouffall 001), B (Outtall 003), D (Ouffall 005), and E (Ouffall 006) discharged to Foidel Creek. No permit excursions were noted for this period. Outtall 001 discharged only during the weeks of September 17~ and 24~", which allowed for two samples to be collected and analyzed this month at this point. Outfall 003 discharged only during the weeks of August 10'", 17'" and 24 '", which allowed for two samples to be collected and analyzed during this month. Please note that the DMR forms we received for Outfall 001A include an erroneous parameter listing of total recoverable manganese. This is not a required monitoring parameter under the permit, as such, a not applicable ("NA") symbol has been inserted into the data entry areas for this parameter. Quarterly Whole Effluent Toxicity (WET) tests were conducted the week of August 6, 2001 for Outtalls 001 and 005. Outfall 005 passed for both species, with "Concentrations with Statistically significant Difference in Lethality" reported at >100%. Outtall 001 was not chronically toxic to the survival of C. dubia, but did not pass with regards to the reproduction of Ceriodaphnia dubia, as well as to the growth and survival of fathead minnows. In an August 21, 2001 telephone conversation between Mr. Chris Gates and myself, CDHPE agreed not to require Colorado Yampa Coal Company (CYCC) to initiate either accelerated or PTIlTIE testing as a result of this WET test failure, since CDPHE was in the process of approving CYCC's request to discontinue chronic WET lesGng and substitute acute WET testing for Daphnia magna only. A copy of a CYCC letter to Mr. Gates (dated August 21, 2001), verifying the understanding of this conversation, is attached. Copies of the CDPS WET Tesl Report Forms for these tests are included with this submittal. Please note that the new DMR forms we received for reporting WET test results are missing one parameter, %Effect Startre 7 Day for Pimephalles Chronic TCP38, Code "P°. As such, we modified an existing DMR sheet to input this missing parameter. The modified sheet is attached to the DMR with the other WET test parameters. Outtalls 002, 004, 008, 007, and 009 did not discharge; and therefore had no chemical tests during this period. Outfall 020 has not been constructed yet; therefore there is no discharge to enable chemical testing to date. Points 010, 016 and 017 have been eliminated from this permit. In order to reduce the amount of paper work, the following certification will be substituted for the actual DMR forms to cover the outtalls, which did not discharge. 1 certify under penalty of law that I have personally examined and am familiar with the information submitted herein; and based on my inquiry of those individuals responsible for obtaining the information, I believe the submitted information is true, accurate, and complete. 1 am aware [hat there are significant penalties for submitting false information, including the possibility o/ /ine and imprisonment. See 18 U.S.C. § 1001 and 33 U.S.C. § 1319. (Penalties under these statutes may include fines up to $10,000 and/or maximum imprisonment of between 6 months and 5 years.) 6~K ~ iVi=s~/.U~ .~/7 C~~% Richard Mills, Environmenta a~ Date Please contact me at (970) 870-2750 for any further questions or additional information Twen ile Coal Company ,- G_ G/~/~E~ Brian A. Watterson, Environmental Geologist enclosures cc: DMG CWPS Permit No. CO-0027154 file