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FI <br /> ®� <br /> I <br /> GROUNDWATER <br /> I�!J❑� TECHNOLOGY, INC. 1401 Halyard Drive,Suite 140,West Sacramento CA 95691,(916)3724700 <br /> FAX(916)372$781 <br /> December 5, 1995 <br /> Mr Bob Vasquez <br /> The Southland Corporation <br /> 3146 Gold Camp Dnve, Suite 300 <br /> Rancho Cordova, California 95670 <br /> Subject Closure Report <br /> Southland Store No 20680 <br /> 9110 Thornton Road <br /> Stockton, California <br /> GTI Project No 02070-0133 <br /> Dear Mr Vasquez <br /> Groundwater Technology, Inc prepared this Closure Report to document historical and current soil and <br /> groundwater assessment and remediation, and to request site closure for The Southland Corporation <br /> (Southland) Store No 20680 located at 9110 Thornton Road in Stockton, California (Figures 1 and 2, <br /> iAttachment 1) This report was prepared in response to the May 18, 1995 Closure Review Meeting <br /> with the San Joaquin County Public Health Services Environmental Health Division (SJCPHS-EHS) and <br /> the California Regional Water Quality Control Board-Central Valley Region (CRWQCB-CVR), and <br /> subsequent June 22, 1995 correspondence from the SJCPHS-EHS requesting additional confirmation <br /> sampling <br /> This report augments previously submitted closure reports and information (Closure Report, <br /> Groundwater Technology, Inc , May 21, 1993, Addendum to Closure Report, Groundwater Technology, <br /> Inc , April 27, 1994, Response to Concems over Hydrocarbons Letter, Groundwater Technology, Inc , <br /> January 18, 1995, Technical Information to Support Closure Request, Groundwater Technoiogy,)nc , <br /> April 4, 1995) Information presented in this report is in accordance with the Addendum to Appendix <br /> to the Th-Regional Board Staff Recommendations for Preliminary lnveshgation and Evaluation of .w4" <br /> Si <br /> Underground Tank Sites relating to requests for site closure <br /> 10 BACKGROUND <br /> A precision underground storage tank (UST) test conducted on March 28, 198§49clicated a failuro of <br /> the unleaded fuel tank system at the site On April 2, 1986, the unleaded fMtank i3'nd the assoplAd <br /> dispensing system were shutdown Groundwater Technology was,pontracted by Southland in Apr` " <br /> 1986 to investigate the site's subsurface for evidence of petroleum hydrbcatbons The site assessment <br /> Cbaure2 rpgSTHL-0 l) <br /> 0ff?CL s lhrnughreu1 the t ', C unada and fh eruati <br />