SITE INFORMATION AND CORRESPONDENCE

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PUBLIC NOTICE Fact Sheet: September 23, 2013 Case Closure for Leaking Underground Storage Tank(UST) Site 7-Eleven Inc. on behalf of the San Joaquin County Environmental Health Department (SJCEHD), invites public comment regarding the intent of the SJCEHD to grant regulatory closure for the leaking underground storage tank (LUST)case at the below subject site (Site). SUBJECT SITE: 7-11 Store#20632 4627 DaVinci Drive, Stockton, San Joaquin County, California GeoTracker Global ID#T0607700798 SJCEHD Case Number: 1074 PUBLIC COMMENT PERIOD: 60 Days—September 23, 2013 through November 22, 2013 CASE SUMMARY: SJCEHD and the Central Valley Regional Water Quality Control Board (RWQCB), in cooperation with the property owners and responsible party (7-Eleven) and their environmental consultants have evaluated soil and groundwater conditions, and health concerns at the Site resulting from historical unauthorized releases of gasoline from underground storage tank (UST) systems formerly utilized for fueling operations at the Site prior to the 1998 UST system upgrade. Soil and groundwater investigations were conducted from 1997 to 2013. Gasoline hydrocarbons were detected in on-Site soil and groundwater. Limited over-excavation was conducted in October 1998 during the UST replacement (approximately 967 tons of impacted soil was removed). During this time, dewatering of the UST basin was used as temporary remediation, and a total of 92,000 gallons of groundwater was pumped and removed from the Site. Remedial actions of spot excavation of the former UST and dispenser area, dewatering of the former UST basin, and natural attenuation have reduced mass to very low concentrations in both the soil and groundwater. Remaining mass present at the Site should continue to decrease without additional mitigation as the extent of the plume remains stable. The SJCEHD submitted a Closure Summary to 7-Eleven in June 2013 following concurrence from the RWQCB. After receipt of notification that all case closure activities are completed, the SJCEHD intends to issue a No Further Action Required letter for the Site. WHERE TO GET MORE INFORMATION Site information can be obtained from the GeoTracker web site at: http://geotracker.waterboards.ca.-gov/. Upon written request, the Site case file is available for review at the SJCEHD office located at 1868 East Hazelton Avenue, Stockton, California 95205. An SJCEHD file review request form can be obtained from the SJCEHD website at http://www.sbcehd.com. HOW TO PARTICIPATE Interested individuals have the opportunity to learn more about this case and its pending closure by submitting inquiries/comments to Mr. Harlin Knoll of the SJCEHD by November 22, 2013. Mr. Knoll can be reached at (209) 468-3442, via e-mail at HKnoll(cDsicehd.com, or in writing at: 1868 East Hazelton Avenue, Stockton, California 95205.