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24 July 2000 <br /> AGE-NC Project No 99-0654 <br /> Page 4 of 6 - <br /> AGE personnel Excavation samples were collected from the excavator bucket using a metric soil <br /> sampling hammer loaded with brass sleeves Stockpiled soil samples were collected by digging <br /> approximately I-foot into the soil and then using a metric soil sampling hammer and brass sleeves <br /> Upon collection,the exposed ends of the sample sleeve were covered with Teflon sheets, capped and <br /> sealed with tape Each sample sleeve was then labeled with a unique identification, the depth, time, <br /> date and sampler's initials Appropriately sealed and labeled samples were placed in a chilled <br /> container under ice and transported under chain-of-custody procedure to a DHS-certified laboratory <br /> Selected soil samples were analyzed by McCampbeIl Analytical, Inc a State of California <br /> Department of Health Services (DHS)-certified laboratory for the following constituents <br /> • TPH-g by EPA Method 8015 Modified, <br /> • BTEX by EPA Method 8020, and <br /> • Fuel oxygenates including MTBE, TBA, DIPE, ETBE and TAME by EPA Method 8260 <br /> Modified <br /> 3 3 DISPOSAL OF HYDROCARBON-IMPACTED SOIL <br /> On 03 May 2000, a total of approximately 325 cubic yards (467 tons) of soil were loaded, <br /> transported and disposed at Forward Landfill in Manteca Approximately 150 cubic yards were <br /> generated during removal of the USTs in October 1999 An additional 175 cubic yards were <br /> excavated during interim remediation procedures in April 2000 <br /> Soil disposal receipts from Forward Landfill are included as Appendix A <br /> 34 BACKFILLING OF EXCAVATION <br /> The excavation was backfilled using 5116-inch pea gravel after installing a twenty-thousand gallon <br /> UST <br /> 4.0. FINDINGS <br /> A discussion of laboratory results of soil samples collected during interim remediation procedures <br /> as well as an estimated total mass removed is detailed below <br />