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2010-04-20_REVISION - M1977300 (6)
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2010-04-20_REVISION - M1977300 (6)
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Last modified
8/24/2016 4:08:26 PM
Creation date
4/22/2010 2:12:58 PM
Metadata
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Template:
DRMS Permit Index
Permit No
M1977300
IBM Index Class Name
REVISION
Doc Date
4/20/2010
Doc Name
EPP- AR#1, Groundwater Quality
From
Whetstone Associates
To
DRMS
Type & Sequence
TR11
Media Type
D
Archive
No
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Environmental Protection Plan, Schwartzwalder Mine 9-6 <br />• The waste rock dumps do not appear to affect water quality in the alluvium, based on two decades of <br />monitoring results. However, recent water quality results indicate that water quality in alluvial well MW-0 <br />may be affected by other sources in the alluvium. Uranium concentrations in MW-0 peaked at 0.98 mg/L <br />in 2003 during surface reclamation operations, and have declined to their present levels of about 0.3 mg/L. <br />No consistent trend of increasing uranium concentrations has been observed in the well, and radium <br />concentrations are currently at the lowest concentrations observed in 10 years of monitoring. <br />0 <br />6 <br />• <br />• <br />Q0Q 50? 50? Q0Q <br />ZS 25 25 8 <br />r N M V <br />Total Dissolved Solids <br />(Parts Per Million) <br />? j <br />a? <br />oc / <br />km <br />o <br />Y <br />0 `ps?G a <br />\MW11/ \ <br />Ca 80 60 40 20 Na+K HC03+CO3 20 40 so so Cl <br />Calcium (Ca) Chloride (Cl) <br />CATIONS %megA ANIONS <br />Figure 9-1. Piper Diagram Showing Major Ion Composition of Groundwater Samples <br />(Averaged by Well) <br />4109C.100419 Whetstone Associates 6
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