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REP10179
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REP10179
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Entry Properties
Last modified
8/24/2016 11:39:37 PM
Creation date
11/27/2007 12:20:41 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1982056
IBM Index Class Name
Report
Doc Date
5/5/1995
Doc Name
1994 AHR (1 of 2)
From
Twentymile Coal Company
To
DMG
Annual Report Year
1994
Permit Index Doc Type
HYDROLOGY REPORT
Media Type
D
Archive
No
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through 19a provide period of record statistical summaries of collected data at each site. Figures 29 through <br />38 provide graphical representations of water levels and selected water quality parameters recorded at each <br />site. <br />Water levels at well 006-AY-1, located on Fish Creek upstream of the Southwest Mining District and Mine <br />2, have exhibited a relatively steady increase since approximately 1990 (see Figure 29). During 1994 this <br />trend was noted to continue. We11006-AZ-3 is situated downstream of 006-AY-1 and below the Fish Creek <br />Borehole. Well 006-AZ-3 is monitored in conjunction with surface water site 307 and the water level <br />relationship is presented as Figure 31. Further downstream, well 006-AW-2 and surface water site 1002 <br />aze monitored and water levels are plotted as Figure 33. Again, the interrelationship between alluvial <br />groundwater and surface water is evident. Well008-AU-3 and surface water site 305 monitor water levels <br />upstream from the Fish Creek Tipple area with data presented on Figure 35. The furthest downgradient Fish <br />Creek alluvial monitoring welt is 008-AW-3 located near the Fish Creek Tipple. No unusuai water level <br />fluctuations were noted at any of these sites during 1994 with the exception of the elevation trend mentioned <br />for 006-AY-1. <br />Field parameter measurements obtained in 1994 remained within previously established ranges with the <br />following exceptions. Anew maximum field temperature reading was recorded at well 006-AY-1 in August. <br />New minimum pH and new maximum conductivity values were recorded at well 006-AW-2 in April and <br />May respectively. Lastly, a new maximum field temperature was recorded at well 008-AW-1 in August. <br />Field conductivities and TDS values are observed in general to increase in the downstream direction along <br />Fish Creek. The highest levels are noted to occur in association with wells 006-AW-2 and 008-AW-3. The <br />Fish Creek Borehole impacts as measured at well 006-AZ-3 appear moderate relative to the additional <br />increases downstream. <br />Other monitored water quality parameters returned values typically within previously established ranges <br />during 1994. Exceptions include a new minimum dissolved sodium concentration recorded at well 006-AY-1 <br />in May; new maximum alkalinity, hardness, and bicarbonate values recorded at well 00(rAZ-3 in March <br />and an additional elevated hardness value recorded for this site in Auguste new maximum lab conductivity, <br />TDS, and dissolved sodium values recorded at well 006-AW-2 in May; and new maximum nitrate and <br />nitrate/nitrite values recorded at well 008-AW-3 in March. <br />Trout Creek Alluvial Groundwater During 1994, one Trout Creek alluvial monitoring weU (008-AT-1) <br />required monitoring for water levels and field parameters on a monthly basis, and water quality sampling <br />on a quarterly basis. Monitoring of this site was initiated in January and all monitoring requirements were <br />met at this site: Table 20 provides a summary of the 1994 Water Yeaz data collected. Figures 39 and 40 <br />provide graphical representations of water level and field conductivity information to date. <br />Well008-AT-1 is monitored in conjunction with surface water site 1005. Figtue 39 depicts the water level <br /> <br />-6- <br />
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