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Analytical results for the soil samples collected from the north and south pits are <br /> presented in Tables 2-1 and 2-2, respectively. Copies of laboratory reports and Chain-of-Custody <br /> records are included in Appendix B <br /> 2.1.3 North and South Pit Backfill <br /> Based upon confirmation sample results and discussions with the EHD, NORCAL and <br /> SSA personnel, the north and south pits were backfilled with Class II base rock and compacted. <br /> Prior to and during backfilling of the north pit, piping for a vapor extraction/reinjection soil <br /> remediation system was installed Details of the vapor extraction/reinjection soil remediation <br /> system are discussed in Section 3.2 <br /> 2.2 Investigation and Excavation at Fuel Dispenser Island <br /> 221 Investigation Activities <br /> At the request of NORCAL and SSA, MARK conducted further investigation of the <br /> extent of impacted soil from the area of the former diesel fuel dispenser island This <br /> investigation was conducted in June and July, 1993. In the first phase, soil samples were <br /> collected from 3 feet bgs at locations beneath the former dispenser island. Laboratory analysis <br /> of the soil samples confirmed the presence of petroleum hydrocarbons <br /> To delineate the lateral extent of impact around the dispenser island, limited excavations <br /> (approximately 5 ft x 5 ft x 8 ft deep) were dug and sampled Soil samples were analyzed by a <br /> mobile laboratory provided by Columbia Analytical Services Each sample was analyzed for <br /> TPH-d, TPH-g, and BTEX The analyses confirmed the lateral extent of impact, however, the <br /> vertical extent remained in question The excavated soil was placed in bins for subsequent <br /> disposal to a Class III landfill <br /> FASCLOSE 2 2-3 92-1177102 36 <br />