Beech Street Cleanup

Herrera is completing site cleanup and groundwater monitoring at a former asphalt batch plant in Eastern Washington to obtain No Further Action status from the Pollution Liability and Insurance Agency (PLIA). The work is being completed for a confidential client to address historical releases of diesel fuel and gasoline from underground storage tanks (USTs) originally installed in 1968. Herrera completed a Remedial Investigation, oversaw UST decommissioning and soil remediation work, installed a network of groundwater monitoring wells, and treated groundwater in the source area to increase oxygen levels and accelerate biodegradation of residual petroleum hydrocarbons.