2014-12-24_REPORT - C1981008 - Laserfiche WebLink

Home Browse Search

().TRI -STATE GENERATION AND TRANSMISSION ASSOCIATION, INC. HEADQUARTERS: P.O. BOX 33695 DENVER, COLORADO 80233 -0695 303 - 452 -6111 December 19, 2014 Mr. Brock Bowles Division of Reclamation, Mining, & Safety Coal Program Support Staff 1313 Sherman Street, RM 215 Denver, Colorado 80203 RE: Annual Hydrology Report Western Fuels — Colorado, New Horizon Mine DRMS Mine Permit #C -1981 -008 Dear Mr. Bowles: RECEIVED DEC 2 4 2014 DMSION OF RECLAMATION MIN U AND SAFETY Enclosed is a copy of the Annual Hydrology Report for the 2014 Water Year (October 2013 — September 2014) for the Western Fuels — Colorado, A Limited Liability Company (Western Fuels — Colorado) New Horizon Mine. Tri-State Generation and Transmission Association, Inc. (Tri - State) is the parent to Western Fuels — Colorado. During the 2014 Water Year, the mine did not discharge through Outfalls 008, 009 and 012. Outfall 010 has not been constructed to date; therefore no data is included in this report. All NPDES outfalls, surface water, and groundwater wells have monitoring requirements identified by the Division of Reclamation, Mining and Safety (Division). The Colorado Discharge Permit System (CDPS) also has specific monitoring requirements and effluent limits for the NPDES outfalls. The required monitoring is outlined in the Approved Hydrological Monitoring Program, pages 2.04.7 -49 through 2.04.7 -50 of Permit #C- 1981 -008. During the 2014 Water Year, the facility conducted Whole Effluent Toxicity (WET) testing on the NPDES outfalls and no compliance issues were identified. The WET testing data is enclosed with this report, Appendix 3. The field data to support the Discharge Monitoring Reports (DMR) are provided in Appendix 1. The DMRs were previously submitted to the Division on a monthly basis and are incorporated by reference only. During the 2014 Water Year, three issues were identified and reported to the Water Quality Control Division (WQCD) and the Division: 1) an upset condition submitted February 27, 2014; 2) a lab error submitted March 27, 2014; and 3) a non - active mining discharge, i.e. effluent limits should not apply, submitted May 21, 2014. These issues were addressed further through correspondence with WQCD in July 2014, concluding with an email from Ms. Christy Pickens, WQCD, documenting the resolution. AN EQUAL OPPORTUNITY /AFFIRMATIVE ACTION EMPLOYER A Touchstone Energy' Cooperative CRAIG STATION ESCALANTE STATION NUCLA STATION P.O. BOX 1307 P.O. BOX 577 P.O. BOX 698 CRAIG, CO 81626 -1307 PREWITT, NM 87045 NUCLA, CO 81424 -0698 970 - 824 -4411 505- 972 -5200 970- 864 -7316