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Final. Remedial Plan 5 September 1992 <br /> 3788 Tracy Boulevard Rev. : D1 <br /> Tracy, California P1745R005.WP <br /> will be removed from the pit and stockpiled on the ground surface <br /> in a discrete pile. Excavation of sidewalls will continue until <br /> sampling indicates no greater than 100 ppm TOG, 10 ppm TPH-G, or ND <br />' ppm BTEX remains in the soil according to Table 2-1 of the Leaking <br /> Underground Fuel Tank (LUFT) manual. The excavated soil will be <br />' trucked offsite for disposal after laboratory analysis have been <br /> reviewed and disposal arrangements completed. <br />' B. Soil Underlying Oil-Storage Drums <br />' Area B, shown in Figure 3 , will be excavated to a depth <br /> of three feet or until no soil is encountered containing in excess <br />' of 100 ppm TOG, 10 ppm TPH-G or ND ppm BTEX. A sample will be <br /> taken for hydrocarbon analysis from the floor of this excavation, <br /> as well as from each sidewall. <br />' C. Underground Product Tanks <br /> Following removal of the two 10, 000-gallon fuel tanks and <br />' the associated piping, the pit will be over-excavated to remove <br /> contaminated soil. A standard of 10 ppm TPH-G, the Non Detect <br />' level for BTEX, and 100 ppm TOG will be used. The area outlined in <br /> Figure 3 indicates the area estimated to require excavation. <br /> During excavation, soil removed will be tested with a <br /> photoionization detector to determine the extent of the volatile <br /> concentrations. When the response of this instrument and field <br /> observations indicate the limit has been reached, samples will be <br /> Itaken from the side walls at 20-foot intervals at staggered <br /> heights. <br /> After the fuel pipelines are removed, the bottom of the <br />' trenches will be examined for evidence of hydrocarbon <br />