A release of gasoline on the order of 4,500 gallons occurred of the course of a week in April 2012 at this site, an active gas station/convenience store. CTA responded to the release one day after we were notified and conducted emergency response activities to determine where the free phase petroleum might be located with the intent to recover as much of the lost fuel as possible. Activities conducted included a survey of neighboring residential basements to monitor for gasoline vapors, drilling for soil sampling and monitoring well construction to facilitate groundwater sampling and monitoring.

CTA evaluated the information from the initial assessment/investigation work and recommended a remedial action to recover the fuel, a soil vapor extraction system. A pilot test was conducted in June 2012 to determine the effectiveness of the recommended remediation system. The pilot test was determined to be successful and a system was designed and installed in December 2012 and January 2013.