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REP07464
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REP07464
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Last modified
8/24/2016 11:37:39 PM
Creation date
11/26/2007 11:37:15 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981044
IBM Index Class Name
Report
Doc Date
6/24/1994
Doc Name
1993 AHR Text & Appendices
From
CYPRUS EMPIRE CORP
To
DMG
Permit Index Doc Type
Hydrology Report 1993
Media Type
D
Archive
No
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are plotted in Figure 22. A piezometric map for the Williams <br />• Fork Alluvium (October, 1993) is presented in Figure 23. The <br />data indicates no impact on alluvial water levels related to <br />mining. <br />FATSR QQALITY <br />Summaries of the water quality data for the alluvial wells are <br />presented in Tables 23 and 28. A plot of field electric <br />conductivity versus time is presented in Figure 24. There is <br />no conclusive evidence of seasonal variation of water quality <br />in the alluvium. The field conductivity of Well AVF-5 was <br />above normal in late 1983 and early 1984. The laboratory <br />measurements did not show the same high levels during that <br />period. Only Well AVF-3 is showing an upward trend in <br />• dissolved solids. There is also a correlative increase in <br />calcium, magnesium, sulfate and chlorides. The source of this <br />change is not known. However, it is unlikely due to mine <br />discharge because its location and the dissimilar chemical <br />composition of mine discharge. Also, it is unlikely due to the <br />waste water lagoon because the conductivities in the well <br />exceed the levels-measured in waste water. <br />BIIRFACS 1fATSR lSONITORINf3 <br />There are two rivers in the vicinity of the mine site. The <br />major river., the Yampa, flows in a southeasterly direction <br />across the mine site. The Yampa River drains most of the <br />• northeast corner of Colorado and part of south-central <br />G <br />
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