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Californialtegional Water Quality Con�ol Board <br /> Central Valley Region <br /> Linda S.Adams Karl E.Longley,SCD,PE,Chair Arnold <br /> Secretaryfor Schwarzenegger <br /> Environmental Protection Sacramento Main Office Governor <br /> 11020 Sun Center Drive#200,Rancho Cordova,California 95670-6114 <br /> Phone(916)464-3291•FAX(916)464-4645 <br /> htto'//w ov waterboards.ca.gov/0431tralvallcY <br /> FACT SHEET March 2010 <br /> Environmental Activities in the Vicinity of <br /> East Louise Avenue and Cambridge Drive in <br /> Lathrop, California <br /> INTRODUCTION <br /> This fact sheet has been prepared to inform <br /> community members about environmental <br /> investigation and cleanup activities at the Circle K <br /> gasoline service station located at 16470 Cambridge <br /> Drive in Lathrop,California("the site"). <br /> Since 1998, ConocoPhillips (CP) has been performing <br /> investigation and cleanup of the site under the <br /> direction of the San Joaquin County Environmental <br /> Health Department(SJCEHD). Site <br /> SITE HISTORY <br /> During station operations, underground storage tank <br /> (UST) systems have been used to store gasoline. <br /> These UST systems have been regularly upgraded to <br /> meet environmental guidelines. In November 1997, <br /> during UST system removal and upgrade activities, <br /> approximately 1,241 tons of petroleum hydrocarbon- Aerial map ofthe site, located at the intersection of East <br /> impacted soil and 17,000 gallons of petroleum Louise Avenue and Cambridge Drive in Lathrop, California. <br /> hydrocarbon-impacted groundwater were removed <br /> from beneath the former USTs and from the new UST FOR MORE INFORMATION <br /> excavation. Groundwater samples collected at the This sheet is sent to advise you that the RWQCB is <br /> Commingled Site as recent as September 2009 have accepting public comment on planned remediation <br /> shown concentrations of petroleum components. No activities through 48 days past the mailing date of this <br /> public health risk has been identified and no sheet. If you have any questions, would like additional <br /> drinking water supplies have been affected by information,or would like to comment, please contact: <br /> releases at the site. <br /> James Barton,P.G. <br /> Since 1997, CP had managed ongoing environmental RWQCB-Central Valley Region <br /> activities in coordination with the adjacent property 11020 Sun Center Drive#200 <br /> owners and under the direction of the appropriate Rancho Cordova, CA 95670 <br /> government agencies. Ongoing activities include a (916)464-4615 <br /> network of 26 monitoring wells at and in the vicinity ibarton@waterboards.ca.gov <br /> of the site, all of which are currently being monitored <br /> on a semi-annual basis. Additionally, three soil vapor State Water Resources Control Board's <br /> extraction wells, four ozone sparge wells, and seven GeoTracker Database Website at: <br /> permanent shallow soil vapor sampling points have http://¢eotracker.swrcb.ca.gov <br /> been installed at the site. <br /> Under"TOOLS",select"Advanced Search". In the <br /> "Case ID/Global ID" box, enter: T0607700822 for <br /> site-specific information. <br />