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BTUEC is required to monitor two mine water discharge locations. These locations are <br />the No. 5 Mine Sump (NPDES #003) and the 7-North Angle Sump (NPDES #024). Both <br />sites are required to be monitored weekly for flow and semi-monthly and quarterly for <br />NPDES water quality parameters (field parameters and TDS, Fe and Mn). The NPDES <br />discharge points were monitored as required with the full NPDES parameters monitored <br />in February, April, August and November. All of the required monitoring was performed <br />in the 2007 reporting year. All of the samples met applicable water quality standards. <br />BTUEC is required to monitor two surface water locations along the Williams Fork. <br />These locations are WF-1 and WF-2. The two sites require a monthly measurement of <br />flow and analysis of field parameters (temperature, conductivity, pH and TSS) and a <br />quarterly analysis for NPDES water quality parameters (field parameters and TDS, Fe <br />and Mn). The two Williams Fork surface water monitoring locations were monitored <br />monthly, as required, with the full water quality parameters monitored in February, April, <br />August and November. All of the required monitoring was performed in the 2007 <br />reporting year. All of the samples met applicable water quality standards. <br />BTUEC is required to monitor one spoil spring location. This location is the No. 1 Strip <br />Pit. This site is an NPDES discharge point (NPDES #022), as it flows directly into the <br />Williams Fork River. The No. 1 Strip Pit spring requires weekly measurements of flow <br />level and semi-monthly and quarterly analysis of field and NPDES water quality <br />parameters (field parameters and TDS, Fe and Mn). All of the required monitoring was <br />performed in the 2007 reporting year. All of the samples met applicable water quality <br />standards. <br />BTUEC is required to submit quarterly Discharge Monitoring Reports (DMR's) to the <br />Colorado Department of Public Health and Environment's Water Quality Control <br />Division and the Division. These reports were submitted as required (received on 20 <br />April 2007-1Q07, 30 July 2007-2Q07, 30 October 2007-3Q07 and 29 January 2008- <br />4Q09). All of the discharges were in compliance for the reporting period. <br />Although not included in the 2007 AHR, there are 24 ponds, sediment ponds or sediment <br />traps at the Eagle Mine Complex that require quarterly inspection. These ponds are 5-P5, <br />5-P6, 5-P7, HR-P1A, HR-P1B, 5-Pl, 5-P2, 5-P3, 5A-PI, SH-P1, SH-P2, 9-P5, 9-P6, 9- <br />P7, 9-P8, 9A-P1, 9A-P2, 9A-P3, 9A-P4, 9-P1, 9-P2, 9-P3, 9-P4 and the Wastewater <br />Treatment Pond. These ponds were inspected as required and the reports were forwarded <br />to the Division for review (5 April 2007-1Q07, 21 June 2007-2Q07, 15 October 2007- <br />3Q07 and 16 January 2008-4Q07). All of the ponds were reported to be in good <br />condition with only minor maintenance (including rodent control) being required. <br />The 2007 Annual Hydrology Report for the Eagle Mine Complex presented all of the <br />required information in a clear, concise manner. No exceedences of any NPDES or water <br />quality standards were noted in the information presented in the report. All necessary <br />documents and reports were submitted in a timely fashion. The Division does not have <br />any further questions or comments regarding the 2007 AHR.