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Page A-18 <br />TABLE 8 <br />Historical and <br />Descriptive Summary of <br />Surface Water Monitoring <br />Sites, Seneca Iz-W Mine <br />Site Number <br />Date Established/ <br />(Computer ID) <br />Location <br />Instrumentation <br />Periods of Operation <br />Comments, Etc. <br />SW-S2W-CGI <br />South (015) tributary of <br />1979; crest stage gage <br />06/79-11/83 <br />Discontinued in 1986. Resumed monitoring <br />(WSSCl) <br />Sage Creek at 7,160 ft. <br />(Q --VA) <br />05-11/84;03-11/85 <br />in 1997. Relocated appx. 500 ft. above <br />elevation (5N88W14DDC) <br />03-05/86;07/97-10/98 <br />old site due to access problem. Discontinued <br />in 1998 upon construction of Pond 015 <br />SW-S2W-CG2 <br />Mid -watering Trough <br />1979; crest stage gage <br />08/80-11/82 <br />Data limited. Discontinued in 1982 due to <br />(WSWTC2) <br />Gulch at 6,980 ft. <br />(Q=BSS) <br />change in mine plan. <br />elevation (5N88W20DAD) <br />SW-S2W-FG1 <br />Mouth of Hubberson Gulch <br />1979; flume gage, <br />07/79 -present <br />Continuous discharge data (except in winter) <br />(WSHF1) <br />at 6,795 ft. elevation <br />2.5 -ft throat width <br />(5N88W16BCD) <br />Parshall flume w/ <br />continuous level <br />recorder. (Q7 -VA) <br />SW-S2W-FG2 <br />Lower Watering Trough <br />1979; flume gage, <br />08/80-11/85 <br />Site is upstream of mining, <br />(WSWTF2) <br />Gulch at 6,920 ft. <br />0.75 -ft throat width <br />04/87-10/93 <br />Monitoring discontinued 10/93 <br />elevation (5N88W20ACD) <br />Parshall flume w/ <br />continuous level <br />recorder. (Q --VA) <br />SW-S2W-FG3 <br />Middle of reach on Sage <br />1981; flume gage <br />04/81-09/83 <br />U.S. Geological Survey discontinued monitoring <br />(YSSF1) <br />Creek at 7,220 ft. <br />2.5 -ft throat width in <br />at site in 1983. <br />elevation (5N87Wl8CDD) <br />Parshall flume with <br />continuous recorder <br />(Q VA) <br />SW-S2W-FG4 <br />Lower Sage Creek at <br />1990; flume gage <br />09/90 -present <br />New site installed late summer 1990 <br />(WSSF3) <br />6,860 £t. elevation <br />3.0 -ft throat width <br />Continuous discharge data (except in winter). <br />(5N87W11ACC) <br />Parshall flume w/ <br />continuous recorder <br />(Q=VA) <br />SW-S2W-FG5 <br />Upper Sage Creek at <br />1990; flume gage 2.5 -ft <br />09/90 -present <br />New site installed late summer 1990 <br />(YSSF3) <br />7,385 ft elevation <br />throat width Parshall <br />Continuous discharge data (except in winter). <br />(5N87W30BB) <br />flume with continuous <br />Yoast Mine site <br />recorder (Q7 -VA) <br />S-1 <br />Tributary to <br />-/none associated <br />1979, 1983 <br />Flow and water quality of spring fed creek are <br />(WSPG1) <br />Sage Creek <br />Q=B&S <br />1986-2004 <br />monitored immediately upstream of unregistered <br />(5N88W14CBH) <br />stock pond. Discontinued 2005. <br />7,425 ft. <br />S-5 <br />Tributary to Hubberson <br />-/none associated <br />1979, 1983 <br />Flow sampled immediately upstream from where <br />(WSPGS) <br />Creek (5N88W22,A,CB) <br />Q --8&S <br />1986-2003 <br />road crosses creek. Discontinued 2004. <br />7,225 ft. <br />Page A-18 <br />