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Title

Black Lake Grocery Groundwater Monitoring Results, October 2018 and June 2020: Data Summary Report

 
Publication number Date Published
21-03-018October 2021
VIEW NOW Black Lake Grocery Groundwater Monitoring Results, October 2018 and June 2020: Data Summary Report (Number of pages: 20) (Publication Size: 1492KB)




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Author(s) Carnes, J.
Description Groundwater samples for BTEX and TPH-G were collected in October 2018 and June 2020 from 5 monitoring wells at Black Lake Grocery in Thurston County.

Water quality results for groundwater sampling in 2018 and 2020 continue to confirm that the near-surface aquifer at Black Lake Grocery is contaminated across the site. Contaminant concentrations have decreased since 1995 but continue to exceed (not meet) established cleanup levels in 4 of the sampled wells.

BTEX and TPH-G concentrations decreased significantly after passing through the treatment wall, but the continued presence of high contaminant concentrations in wells on the downgradient side of the wall and near the shoreline suggests that petroleum constituents from the site may be migrating to Black Lake.
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Contact Jacob Carnes at 360-407-6764 or CARJ461@ecy.wa.gov
Keywords TPH, BTEX, groundwater toxics, Groundwater Plume, groundwater monitoring, PBT, transporation, toxics, toxics monitoring, ground water monitoring, groundwater, groundwater contamination, ground water, ground water contamination
WATERSHED Water Resource Inventory Area 23 Upper Chehalis
DATA Environmental Information Management (EIM) #PMART007

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