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

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California Regional Water Quality Control Board, Los Angeles Region. 1676 pp, 2018

This report documents remediation and restoration activities for Cluster 6 of the former Kast Property, which is now the Carousel housing tract in Carson, California. Remedial activities included excavation and off-site disposal of petroleum hydrocarbon-impacted soil to a depth of 5 ft bgs at five residential properties and further excavation to a maximum depth of 10 ft at two targeted locations; installation of optional sub-slab depressurization (SSD) systems at six properties; soil vapor extraction (SVE)/bioventing well and piping installation at six properties; and SVE header piping and well installation within Ravenna and Panama Avenues. Site preparation activities began on October 30, 2017, and restoration activities were generally complete by March 26, 2018. About 5,770 tons of impacted soil were excavated from the Cluster 6 properties and transported either as nonhazardous waste for disposal in the Chiquita Canyon Landfill in Castaic, California, or to the Soil Safe treatment facility in Adelanto, California, for thermal treatment and recycling. Following soil excavation and backfill activities, the SSD systems and SVE/bioventing wells and piping were installed. An additional ~792 tons of soil were excavated from the SVE header piping trenches within Ravenna and Panama Avenues and transported off site for disposal as nonhazardous waste. See this report and other technical information on this project at http://geotracker.waterboards.ca.gov/profile_report?global_id=T10000000228.

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