SITE INFORMATION AND CORRESPONDENCE

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19449 Riverside Drive,Suite 230,Sonoma,California 95476 Telephone: (707)935-4850 Fax: (707)935-6649 www.CRAworld.com CONESTOGA—ROVERS &ASSOCIATES 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: Former Shell Service Station GeoTracker Global ID No.T0607700721 Site Address:1267 Country Club Boulevard SJCEHD Site Code:505602 PUBLIC COMMENT PERIOD: 60 Days—August 29,2014—October 29,2014 CASE SUMMARY: The SJCEHD,in cooperation with the responsible parties(Gary C.Escabar Trust and Equilon Enterprises LLC dba Shell Oil Products US(Shell)),and the environmental consultant,Conestoga-Rovers&Associates(CRA),have evaluated soil and groundwater conditions,and health hazards at the subject Site resulting from historical unauthorized releases of gasoline from an underground storage tank(UST)system and fueling operations. Shell ceased operation of the serviced station in 1974 during which time the UST system,consisting of one 8,000-gallon, two 3,000-gallon,and one 2,000-gallon USTs,and all associated dispensers and product piping,were removed from the Site. One 280-gallon waste oil UST was also removed. The tank removals were not overseen by SJCEHD. Since then the Site has been used for non-service station commercial-type uses. From July 1995 through November 2010,soil,groundwater,and soil gas samples were collected at the Site to evaluate the extent of petroleum hydrocarbon-related impacts from the former UST system. Impacted soil does not extend off-site;the plume of impacted groundwater associated with the Site remains mainly confined to the Site and is decreasing in size and mass. The mass of gasoline-related impacts has decreased significantly over time because of natural attenuation processes that continue to break down the chemicals of concern in soil and groundwater. Impacted groundwater is predicted to achieve water quality objectives in approximately forty years. CRA estimated that approximately 87.75 pounds of gasoline constituents remain in soil and approximately 3.5 pounds of gasoline constituents remain in groundwater beneath the Site. CRA has reviewed and evaluated groundwater monitoring and other data for this Site and has concluded there is no longer a significant threat to human health or the environment. The SJCEHD has 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 anticipates issuing a No Further Action Required letter for the subject Site,provided that no compelling reason to keep the Site active arises during the public comment participation period. 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 Hazelton Avenue,Stockton,California 95205. An SJCEHD file review request form can be obtained from the SJCEHD website at http://www,sjcehd.com. HOW TO PARTICIPATE Interested individuals have the opportunity to learn more about this case and voice concerns regarding its pending closure by submitting comments to Ms.Angelica Sandoval Marin of SJCEHD by October 29,2014. Ms.Sandoval Marin can be reached at (209)468-2807,via e-mail at amarin@sjcehd.com,or in writing at 1868 East Hazelton Avenue,Stockton,California 95205. Egoai Employment Opp nity Employe Worldwide Engineering,Environmental,Construction,and IT services