U.S. EPA Contaminated Site Cleanup Information (CLU-IN)


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FINAL CAPITAL INDUSTRIES PLANT 4 INTERIM ACTION: STAGE 1 IN SITU CHEMICAL OXIDATION REPORT
Washington Department of Ecology, 278 pp, 2019

The work summarized in this ISCO report was part of an interim action pilot study to address chlorinated VOCs (PCE, TCE, and daughter products) in Site Unit 2 at Capital Industries Plant 4, located in Seattle, Washington. This report summarizes the field procedures and process and performance monitoring results for the Stage 1 ISCO injections performed for the pilot study. Potassium permanganate was injected directly into the subsurface to treat shallow soil and groundwater within the water table interval (0-20 ft bgs). The interim action objectives are tied to the remedial action objectives for the site, which include reducing CVOC concentrations in soil beneath CI Plant 4 to concentrations less than the site preliminary cleanup levels (PCULs) to decrease inhalation risks to acceptable levels; eliminating the potential for future risk to groundwater; and reducing concentrations of CVOCs in water table interval groundwater to concentrations less than the site PCULs. http://clients.aspectconsulting.com/W4/2019_ISCO_Report_reduced.pdf



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