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19 April 1999 AGE-NC Project No. 98-0472 Page 3 of 4 EPA Method 8260; and • Total lead in accordance with EPA Method 6010. The laboratory report (AAL Batch No. 98-1217-016, KIFF Analytical Report No. 12944 and Precision Enviro-Tech Sample I.D.PE4068)and chains-of-custody forms are presented in Appendix F. 2.3. BACKFILLING OF EXCAVATION On 16 December 1998 and 02 February 1999, the UST cavity was partially backfilled utilizing approximately 175 tons of 5/16-inch pea gravel. Delivery receipts for pea gravel to the site are included as Appendix G. On 02 and 03 February-1999, soil stockpiled on the south portion of the site was re-utilized to completely backfill the former UST cavity. Backfill material achieved approximately 90 percent compaction utilizing a compaction wheel. 2.4. UNDERGROUND STORAGE TANK DISPOSITION TRACKING RECORD In accordance with PHS-EHD guidelines,the UST Disposition Tracking Record is included with Appendix H. 3.0. RESULTS OF LABORATORY ANALYSIS A total of fifteen soil samples were submitted to a state-certified laboratory for analysis of TPH-g, BTEX,fuel oxygenates and total lead. Utilizing EPA Method 8015M, TPH-g was detected in soil samples collected beneath the eastem-most tank(UST No. 2)from the south-end at a concentration of 7,200 milligrams per kilogram(mg/kg); TPH-g was detected in stockpiled soil at concentrations ranging as high as 230 mg/kg; TPH-g was detected beneath dispensers and product piping at concentrations ranging as high as 100 mg/kg. Utilizing EPA Method 8020,BTEX constituents were detected in soil samples collected beneath the south-end of UST No.2,from dispensers 3,4,5,6 and from stockpiled soil at concentrations ranging as high as 520 mg/kg. Utilizing EPA method 8260, fuel oxygenates were detected from the south-end of UST No. 2, from Advanced GwEuvironmental,Inc.