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Annual Hydrology Report <br />Information Fact Sheet <br />Mine Name Eagle 5 & 9 Mine <br />Reference Map(s) Map 11 (ground water & surface waterj, Map 26 (NPDES <br /> Points) <br />Hydrology Monitoring Data submitted in the AHR include pie:zometric maps, <br />Requirements (Surface statement concerning observed inflows from the floor in <br />Water and Ground the active sections of the mine, plots of water levels and <br />water) water quality trends <br />Locations of Monitoring Ground water; Trout Creek Sandstone (2 wells), Middle <br /> Sandstone (6 wells), Twenty Mile Sandstone (3 wells), <br /> Alluvial Wells (AVF 3 wells, YAW 5 wells), water level <br /> measurements & quality analysis (see Table 1 & 3A) <br /> Surface water; Williams Fork River is ronitored for flow <br /> and water quality (Table 2). Surface sites Y-1, Y-2 and Y- <br /> 3 are monitored for water quality pararneters. NPDES <br /> Discharge Points; 18 NPDES Discharge: Points are <br /> monitored. Flow rates and water quality are measured at <br /> four sites; No. 5 Mine (003), No. 1 Strip Pit (022), Sewage <br /> (023) and 7 North Angle Well (024). <br />Frequency of See Tables 1-10 <br />Monitoring <br />Parameters Monitored See Tables 4-10 <br />NPDES Location & CO-0034142- Outfalls 003, 004, 009, Ol:l, 012, 015, 017, <br />Name 022, 023, and 024 discharge to the Williams Fork River. <br /> Outfalls 013, 014, 016, 018, 019, 020, and 021 discharge to <br /> the Yampa River. Three outfalls require acute and <br /> chronic testing; 003 (No. 6 Mine to Williams Fork River), <br /> 022 (spoil spring water and seeps to Williams Fork River), <br /> 023 (waste water treatment pond) and t)24 (discharges <br /> mine water from the No. 5 and No. 6 Mines). <br />List of Effluent Limits See NPDES Permit <br />