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REP43750
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Last modified
8/25/2016 12:46:03 AM
Creation date
11/27/2007 9:59:52 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C1982056
IBM Index Class Name
Report
Doc Date
3/5/1997
Doc Name
1996 AHR (1 of 3)
Annual Report Year
1996
Permit Index Doc Type
HYDROLOGY REPORT
Media Type
D
Archive
No
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Figure 43, TDS concentrations at well 008-AV-2 appeaz to have stabilized somewhat during 1996. TCC will <br />continue to monitor the direction of this trend. <br />At well 009-5-10 (Table 20), new maximum SAR values were documented in both November 1995 and May <br />1996. A detectable concentration of nitrite was noted in May as well to establish a new maximum for this <br />parameter. All other measured parameters at well 009-5-10 returned values within the previously established <br />ranges throughout the monitoring year. At we11001-5-5 (Table 21), an elevated nitrate measurement was noted in <br />November 1995. In March, new maximum values for calcium, lab conductivity, hardness, TDS, and sulfate were <br />established along with a new minimum value for SAR. Elevated levels for lab conductivity, TDS, and sulfate <br />persisted into May with subsequent readings returning to more typical levels. With the exception of a new <br />maximum field conductivity reading recorded in October, 1995 at well 008-AV-2 (Table 22), all 1996 values <br />were documented to occur within previously established ranges at this site. Field parameter measurements at well <br />008-AV-1 (Table 23) remained within expected ranges throughout 1996. Wells FO-1 (Table 24) and FO-4 <br />(Table 25) both exhibit field conductivities notably higher than alluvial wells upstream and downstream of these <br />sites. Well FO-1 is characterized with calcium and sulfate as the dominant cation and anion respectively. Well <br />FO-4 exhibits sodium and sulfate as the dominant ions. <br />Fish Creek-Alluvial-Groundwater: During 1996, five Fish Creek alluvial wells (006-AY-l, 006-AZ-3, 006-AW- <br />• 2, 008-AU-3 and 008-AW-3) required monitoring for water levels and field parameters on a monthly basis, and <br />water quality sampling on a quarterly basis. Well 006-AW-2 was frozen in March -field parameters and a water <br />quality sample were not obtained. A bent casing at this well prevented the collection of field parameter data in <br />August and September. Repairs to the well were competed December 12, 1996 with sampling resuming on <br />December 16. Tables 26 through 30 provide summaries of the 1996 Water Year data collected at each site. <br />Tables 26a through 30a provide period of record statistical summaries of collected data at each site. Figures 48 <br />through 57 provide graphical representations of water levels and selected water quality parameters recorded at <br />each site. <br />Water levels at well 006-AY- 1, located on Fish Creek upstream of the Southwest Mining District and Mine 2, had <br />exhibited a relatively steady increase from approximately 1990 through 1994 (see Figure 48). During 1995 and <br />1996, water levels were more erratic with the recent trend having reversed. The maximum fluctuation in water <br />level at this site over the period of record is 7.Y to date. Well 006-AZ-3 is situated downstream of 006-AY-1 and <br />below the Fish Creek Borehole. Well 006-AZ-3 is monitored in conjunction with surface water site 307 and the <br />water level relationship is presented as Figure 50. Further downstream, well 006-AW-2 and surface water site <br />1002 are monitored and water levels are plotted as Figure 52. Again in 1996, the interrelationship between <br />alluvial groundwater and surface water is evident on these two plots. Well 008-AU-3 and surface water site 305 <br />monitor water levels upstream from the Fish Creek Tipple area with data presented on Figure 54. The furthest <br />downgradient Fish Creek alluvial monitoring well is 008-AW-3 (Figure 56) located near the Fish Creek Tipple. <br />No unusual water level fluctuations were noted at any of these sites during 1996. <br />7- <br />
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