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T i _ Site Closure Report } <br /> i March 27, 1992 <br /> Paye _ 3- <br /> cuttings. Three soil samples per boring (a total of six samples) <br /> were collected at depths between 15 feet and total depth for <br /> laboratory analyses. The laboratory analyses of. the _soil -samples <br /> �. indicated no evidence of TPH-G or BTEX atflaborato= detection <br /> k i <br /> limits . Condor concluded that the gasoline contamination was y <br /> probably limited to near the west end ofthe location of the .i <br /> former tank. We recommended that the west end of the tank site I <br /> be over-excavated to remove the remaining.. contamination (Problem <br /> :i <br /> Assessment Report - 1/29/92, and Letter Afdendum - 2/14/92, 11273 <br /> E. Ada Avenue, prepared by Condor Earth`Technologies, Inc. ) j <br /> x <br /> 3.0 OVER-EXCAVATION <br /> On March. 10, 1992, Jim Thorpe•_Oil Inc . , began-the excavation <br /> f �. procedures . James Wack of Condor was on site to supervise the <br /> excavation and collect soil ,samples. -Linda Turkatte of the San <br /> Joaquin County Environmental Health Department was on site to <br /> observe the .soil sampling. Contamination. limits were monitored <br /> visually, and with a .Flame Ionization Detector (FID) during <br /> excavation. The results -of field monitoring were later confirmed <br /> -by laboratory analysis of soil samples. _ <br /> 3.1 Excavation Procedures <br /> The walls of the tank site were extended outward = <br /> I <br /> approximately 2 feet. The floor was excavated to a depth of <br /> approximately 17 feet below the ground surface. The _soil wa <br /> F � 1 <br /> I - CONDOR E <br />