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Former Shell Service Station <br /> 3011 West Benjamin Holt Drive <br /> Stockton,California <br /> The Former Shell service station located at 3011 West Benjamin Holt Drive in Stockton is an <br /> active environmental case with the Regional Water Quality Control Board-Central Valley <br /> Region(RWQCB). Currently the service station is closed. <br /> During October 1996 the underground fuel storage tanks and associated piping and dispensers <br /> were removed at the subject site. Gasoline constituents were discovered in the soil beneath the <br /> subject site at this time. Over the next ten years,several phases of investigation were performed <br /> at the site to determine the extent of gasoline constituents in the soil and groundwater beneath <br /> the subject site. Groundwater monitoring wells were installed and monitored on a quarterly <br /> basis as part of the investigative work. Periodic groundwater extraction events were performed <br /> as in interim-remedial approach to cleaning up groundwater beneath the subject site. <br /> The extent of the soil and groundwater plume beneath the site has been properly delineated and <br /> the remaining gasoline constituent concentrations in both soil and groundwater are low. These <br /> low residual concentrations have been evaluated and have been determined to not be a threat <br /> to human health nor to the waters of the state. Accordingly Shell has requested that the <br /> RWQCB evaluate the site for case closure. <br /> Anyone interested in obtaining more information regarding this site or to make comments <br /> regarding the case closure review should contact: <br /> James L.L.Barton,P.G. <br /> Engineering Geologist <br /> Regional Water Quality Control Board-Central Valley Region <br /> 11020 Sun Center Drive#200 <br /> Rancho Cordova,CA 95670-6114 <br /> Tel. (916)464-4615 <br /> Email: jbarton@waterboards.ca.gov <br />