Laserfiche WebLink
i <br /> r <br /> Notice of Environmental Corrective Action for Del Monte Foods :Site <br /> I <br /> In April of 2003 Del Monte Foods will begin remediation of impacted soil and <br /> groundwater originating from its facility at 110 Filbert Street in Stockton. Subsurface <br /> impacts were discovered at a former service station located on the southern portion of the <br /> Del Monte facility known as the Disco site. The Disco site was operated as a service ! <br /> station until the property was purchased by Del Monte in 1976. Del Monte never <br /> operated the service station. <br /> i <br /> Three 10,000 gallon underground storage tanks were discovered on the Disco site and <br /> removed in 1985. During the removal of the tanks, petroleum-related subsurface impacts <br /> were discoveredin the soil beneath the tanks. Del Monte investigated the extent of <br /> impacted soil and installed groundwater monitoring wells to investigate the extent of <br />!` impacts to groundwater. As. a result of this subsurface investigation, Del Monte <br /> developed a Corrective Action Plan for the site in January 2003. The Corrective Action <br /> Plan recommended construction of a soil vapor extraction and air sparging remediation <br /> system. In addition to targeting the source area, the plan also included installation of a <br /> line -of air sparging wells supplemented with ozone gas adjacent to Highway 4 to <br /> remediate the leading edge of the impacted area. <br /> The technologies Del Monte will implement in cleaning up the site are soil vapor <br /> extraction, air sparging and ozone-assisted air sparging. Soil vapor extraction works by i <br /> installing perforated wells below the ground surface but above groundwater that, by <br /> pulling a vacuum on the wells with a pump, draws vapors from the ground to the surface <br /> -for treatment. Airsparging works by installing perforated wells below <br /> groundwater and <br /> injecting air to cause vapor formation that is then captured by the soil vapor extraction <br /> wells. The ozone sparging wells are similar to air sparging wells except that ozone is <br /> added to the air to remove the impacts in place, thus not requiring a soil vapor extf'action <br /> component. <br /> The system is expected to start up in April 2003 and run for two to three years. No <br /> adverse effects or exposures to the public are anticipated as a result of construction or <br /> operation of this remediation system. Questions or concerns about the remediation <br /> program can be addressed to Mike Infuma with the San Joaquin County Environmental <br /> Health Department at (209) 468-3454. <br /> ILL COPY <br />