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Statewide Excavation TL 392-0001-15 <br /> June 24 , 1992 Page 2 <br /> ' INSPECTION AND SAMPLING PROCEDURES <br /> The UST was removed on June 9, 1992 . Depth to the bottom of <br /> the UST was measured and recorded after removal. The length and <br /> diameter of the UST was measured and recorded. In addition, the <br /> UST was inspected for holes, rust, and other physical evidence that <br /> ' would suggest the potential for leakage. Finally, the UST <br /> excavation was inspected for the presence of petroleum product <br /> odor, soil discoloration, and groundwater. The excavation for the <br /> UST was approximately 172 feet east of Industrial Way and 12 feet <br /> south of the northern fence line. <br /> Three soil samples were collected from the excavation by Mr. <br /> Ken Jones Twinin ' s staff aff geologist, after removal of the USTs on <br /> June 9 , 1992 . The soil samples were collected from a depth of <br /> approximately eleven feet below site grade. Location and depth of <br />' the soil samples were specified by Mr. William R. Snavely, San <br /> Joaquin county Health Department on-site representative. The soil <br /> samples were collected after a backhoe bucket removed soil from the <br /> excavation. To obtain a soil sample from the backhoe bucket, a <br /> clean brass sleeve was pushed into the soil . After collection of <br /> soil, the ends of the brass sleeve was covered with Teflon® tape <br /> and fitted with plastic caps. The brass sleeve was then labeled, <br /> placed into a plastic bag, and immediately placed on blue ice for <br /> shipment to Twining' s state certified laboratory. <br /> Groundwater was observed to be seeping into the bottom of the <br />' excavation after removal of the tank. At the direction of Mr. <br /> Fresrm Modesto Vftaft BakwO M <br />