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specifications. A cure time of 7 working days was required for the concrete before placement of <br />10 the AST. Fuel lines from the new AST were connected to the day tanks in the generator room <br />of Building 330. The fuel lines leading from the AST to the building were placed in a concrete <br />secondary containment channel constructed by Geofon to allow for visual inspection for leaks. <br />Location and operation of the AST were approved by base fire department representatives. <br />Two 12,000 -gallon USTs were removed from Building 330 on 11 June 2001. Prior to <br />removal, Geofon rinsed and inerted the USTs and associated piping. Evergreen Environmental <br />transported the tank rinsate along with hazardous waste manifests to the Evergreen Oil Inc. <br />facility in Newark, California for recycling. Ecology Control Industry (ECI) transported the <br />tanks along with hazardous -waste manifests to their facility in Fontana, California. Copies of the <br />AdVIL hazardous waste manifests are included in Appendix A. The tank appurtenances and piping were <br />transported to Lovelace recycling facility in Lathrop, California for disposal. Concrete and <br />asphalt were taken to FTG Construction Materials, Inc., in Lodi for recycling. <br />On 11 July 2001, after the tanks had been removed, nine soil samples were collected; <br />three from beneath the pipeline and six from the stockpiled soil. Samples were not taken at this <br />time from beneath the tanks (i.e., the hold-down concrete slab) because of the unstable nature of <br />the excavation sidewalls. The excavation was backfilled using excavated material that was <br />certified clean and import Class II base material. Soil borings were drilled on 13 November <br />2001 and seven samples were taken from under the concrete pad on 13 and 14 November 2001. <br />Table 2 summarizes soil samples collected at the site. Figure 2 shows the site plan with sample <br />locations. <br />Information on the tanks including dimensions, date of removal, waste transporters and <br />disposal facilities, and regulatory personnel present during removal is summarized in Table 1. <br />4 <br />