SITE INFORMATION AND CORRESPONDENCE FILE 2

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V � PUBLIC NOTICE Fact Sheet Pending Case Closure for Leaking Underground Storage Tank Site Conestoga-Rovers &Associates, 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: Site Name: Shell-Branded Service Station GeoTracker Global ID No. T0607700305 Site Address: 620 West Charter Way SJCEHD Site Code: 1058124 PUBLIC COMMENT PERIOD: 60 Days—January 10—March 9, 2014 CASE SUMMARY: The SJCEHD, in cooperation with the property owner, 620 West Charter Way LLC, the responsible party, Equilon Enterprises LLC dba Shell Oil Products US (Shell), and the environmental consultant, Conestoga-Rovers & Associates, have evaluated soil and groundwater conditions, and health concerns at the subject Site resulting from historical unauthorized releases of gasoline from an underground storage tank (UST) system and from fueling operations. From 1989 through October 2012, soil and groundwater samples were collected at the Site in order to evaluate the extent of petroleum hydrocarbon-related impacts from the UST system. In November 1989, the UST system, consisting of two 10,000-gallon and one 8,000-gallon gasoline USTs and associated piping were removed and replaced. One 550-gallon waste oil UST was also removed. During these activities, approximately 1,100 cubic yards of impacted soil removed from the Site. In 1990, a free product skimming system was installed and approximately 180 gallons was skimmed from the wells. From 1992 through 1996, a Soil Vapor Extraction (SVE) system operated. During this period, the system removed over 17,000 pounds of petroleum hydrocarbons from the subsurface. Impacted soil does not extend off-site; impacted groundwater extends at least 50 feet off-site toward the east, but is decreasing in size and mass. The mass of gasoline-related impacts have decreased significantly because of cleanup activities performed by Shell, as well as natural processes that continue to break down the chemicals in soil and groundwater. Impacted groundwater is predicted to achieve water quality objectives in approximately sixty-one years. On the basis of groundwater monitoring and previous and current investigations, the SJCEHD concluded that the Site status is protective of the environment and of human health for current and future Site use and for adjacent off-site areas. After receipt of notification that all case closure activities have been completed, the SJCEHD intends to issue a No Further Action Required letter for the subject Site. WHERE TO GET MORE INFORMATION Site information can be obtained from the GeoTracker website 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