SITE INFORMATION AND CORRESPONDENCE

Home Browse Search

PUBLIC NOTICE Fact Sheet: January 3,2014 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 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 #17334 4501 North Pershing Avenue, Stockton,San Joaquin County, California GeoTracker Global ID # T0607700407 SJCEHD Case Number: 1233 PUBLIC COMMENT PERIOD: 60 Days-January 3, 2014 through March 3,2014 CASE SUMMARY: The SJCEHD,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. Natural attenuation has 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. 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 dissolved petroleum hydrocarbon plume is stable and defined, and meets the characteristics set in the LTCP. In addition, decay rate calculations indicate that concentrations will be below water quality objectives in approximately 10 years. • Exposure to petroleum vapors in indoor air is comparatively insignificant relative to exposures from small surface spills and fugitive vapor releases that typically occur at active fueling facilities. • Direct contact with impacted soil and inhalation of petroleum hydrocarbon vapors pose a low threat to human health, based on the thresholds listed in the LTCP. The SJCEHD concurs with the closure recommendation presented by 7-Eleven, Inc. and their environmental consultants. Per 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 when 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: hftp://geofracker.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 htto://www.sicehd.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. Vicki McCartney of the SJCEHD by March 6, 2014. Ms. McCartney can be reached at (209) 468-9852, via e-mail at vmccartnev@sicehd.com, or in writing at: 1868 East Hazelton Avenue, Stockton, California 95205.