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2019-05-03_HYDROLOGY - M1977344
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2019-05-03_HYDROLOGY - M1977344
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Last modified
1/5/2025 5:09:14 AM
Creation date
5/6/2019 3:31:59 PM
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DRMS Permit Index
Permit No
M1977344
IBM Index Class Name
Hydrology
Doc Date
5/3/2019
Doc Name
Groundwater Monitoring Report
From
Arcadis US
To
DRMS
Type & Sequence
TR6
Annual Report Year
2019
Email Name
TC1
Media Type
D
Archive
No
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2019 GROUNDWATER MONITORING REPORT <br /> 1 discernible impact from the CKD disposal area. The K:Na ratios have stabilized or are declining <br /> in the last few years. <br /> ' • Total Dissolved Solids: TDS concentrations in MW-7 are generally decreasing through time <br /> (Figure 4). The concentrations of TDS and sulfate are generally stable in MW-12 and MW-13. All <br /> TDS concentrations remain below their respective NPLs. <br /> ' • Sulfate: Sulfate concentrations show a similar trend as TDS (Figure 5). MW-7 concentrations are <br /> generally decreasing through time and are generally stable in MW-12 and MW-13. All <br /> concentrations remain below their respective NPLs. <br /> • Manganese: Manganese concentrations in MW-7, MW-12, and MW-13 have decreased over <br /> time and have stabilized in the last 3 to 5 years (Figure 6). Manganese concentrations remain <br /> well below the respective NPLs at MW-7 and MW-13 <br /> • Total Iron: Total iron concentrations have exhibited considerable fluctuations at all three wells <br /> since monitoring for this parameter began in 2003 (Figure 7). Because total iron concentrations <br /> are strongly correlated to the amount of suspended solids contained in a groundwater sample, it <br /> is not surprising to observe these fluctuations in concentrations as small differences in how a <br /> sample was collected could impact the suspended solids concentration in that sample. <br /> • Dissolved Iron: Dissolved iron has stabilized at all three wells (Figure 8) and concentrations in <br /> 1 MW-13 have remained below the DRMS issued NPL since 2009. <br /> • The concentrations of analytes found in monitoring well MW-12, which is considered the <br /> background well, from the March 2018 sampling event(Table 2 and Figures 3,4,5, 6, and 8) <br /> remain generally higher than the wells installed downgradient of the CKD. As previously <br /> mentioned, the total iron concentrations (Figure 7) have been relatively unstable in all three wells <br /> over the years, though the average concentration is highest at MW-12. <br /> ' arcadis com <br />
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