8.d) Zavoral Mine Wetlands 2013 Annual report-WCDASHINGTON
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ON SERVATION
I S T B.".- I C T
MEMORANDUM
TO: Kristina Handt, Administrator, City of Scandia
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O A K D A L E, MN 5 5 1 28
651-275-1136
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D. O R G
FROM: Jed Chesnut, Wetland/Natural Resource Specialist
DATE: January 8, 2014
RE: Zavoral Mining and Reclamation Project — Annual Wetland Boundary Monitoring
Report
As per the contract (13-01) between the Washington Conservation District (WCD) and the City of Scandia,
WCD staff reviewed hydrologic monitoring data pertaining to Technical Service 2 of Exhibit B. The on-site
review of the wetland boundaries did not occur during 2013 since mining activities did not commence until
after the growing season ended.
Hydrologic monitoring data were provided to the WCD by the City's consulting hydrogeologist (LBG, inc).
The attached map from LBG shows the locations of the wells. Groundwater elevations were relatively
constant in each well during the monitoring period. Fluctuations in groundwater elevation were within about
one foot, which would be consistent with natural variations of wetland hydrology, assuming the elevations in
the wells can be reasonably extrapolated to the seepage discharge at the wetlands.
The groundwater elevation data as presented by LGB do not appear to indicate detrimental effects to the
seepage wetlands located east of the active mining area. However, given the short duration of active mining
during the monitoring period, any potential effect to the seepage wetlands may not yet be apparent.
Supervisors: Louise Smallidge - Bob Rosenquist o George Weyer o John Rheinberger - Jim Levitt