SITE INFORMATION AND CORRESPONDENCE FILE 2

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,( S PUBLIC NOTICE Fact Sheet: March 28, 2014 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 SJCEHD's consideration to grant regulatory closure for the leaking underground storage tank (LUST) case at the subject site (Site). SUBJECT SITE: 7-11 Store #14117 2725 Country Club Boulevard,Stockton, San Joaquin County, California GeoTracker Global ID #T0607700458 SJCEHD Case Number: 1073 PUBLIC COMMENT PERIOD: 60 Days-March 28, 2014 through May 27, 2014 CASE SUMMARY: The SJCEHD, in cooperation with the responsible party (7-Eleven) and Stantec Consulting Corporation Inc. (Stantec), have evaluated soil and groundwater conditions, and health concerns at the Site that resulted from 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. Based on analysis of soil and groundwater samples collected between 1998 and 2003, it was estimated that approximately 74 gallons of total petroleum hydrocarbons as gasoline (TPHg) were potentially present in the soil and approximately two gallons of TPHg were potentially present in the groundwater prior to remedial activities.The dissolved hydrocarbon plume was limited in extent to the area immediately surrounding the southern portion of the 7-Eleven facility and significant contamination did not extend across Country Club Boulevard to the south. Remedial actions consisting of bi-weekly to monthly oxygen injections from April 2009 through March 2013 have reduced mass to very low concentrations in both the soil and groundwater. Based on the most recent soil and groundwater sampling data, it is unlikely that significant amounts of hydrocarbons remain present in soil, and less than 0.01 gallons of petroleum hydrocarbons remain dissolved in groundwater. In addition, any remaining mass present at the Site should continue to decrease without additional mitigation as the extent of the plume remains stable. Based on existing soil and groundwater data, the Site is eligible for case closure as detailed in the Low- Threat Underground Storage Tank Case Closure Policy (LTCP).The SJCEHD concurs with the closure recommendation presented by 7-Eleven, Inc.and Stantec. In accordance with the requirements of the LTCP, this fact sheet has been prepared to provide notification to the public of the pending case closure.The SJCEHD will consider any comments received during this time period while determining if the case should be closed or if site-specific conditions warrant otherwise. WHERE TO GET MORE INFORMATION Site information can be obtained from the GeoTracker website at: http://Qeotracker.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.sj_cehd.com. HOW TO PARTICIPATE Interested individuals have the opportunity to learn more about this case and its pending closure by submitting inquiries/comments to Ms. Angelica Sandoval Marin of the SJCEHD by May 27, 2014,who can be reached at (209) 468-2807,via e-mail at amarin@sicehd.com, or in writing at: 1868 East Hazelton Avenue, Stockton, California 95205.