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e 17 September 1999 AGE-NC Project No. 99-0637 Page 2 of 3 Samples collected from beneath the diesel UST were analyzed for: • Total petroleum hydrocarbons quantified as dies2l (TPH-d) in accordance with EPA Method 8015 modified; and • Volatile aromatic compounds: benzene, toluene, ethylbenzene and xylenes (BTEX) with methyl tertiary-butyl ether (MTBE) in accordance with EPA Method 8020; Samples collected beneath both gasoline USTs were analyzed for: • Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA Method 5030/ 8015 Modified; • Volatile aromatic compounds (BTEX) with MTBE in accordance with EPA Method 8020; • Fuel oxygenates: di-isopropyl ether (DIPS), ethyl tertiary-butyl ether (ETBE), MTBE, tertiary-amyl methyl ether(TAME) and tertiary butyl alcohol (TBA) in accordance with EPA Method 8260; Samples collected beneath the leaded gasoline UST were also analyzed for: • Total lead in accordance with EPA Method 60 0. Soil stockpile samples were analyzed for all the above described constituents. LABORATORY RESULTS OF SOIL SAMPLES TPH-g was detected in composite stockpile samples SP1-SP2 and SP3-SP4 at concentrations of 2.1 milligrams per kilogram (mg/kg or parts per million, pm) and 4.8 ppm, respectively. TPH-d was detected in samples SP 1-SP2, SP3-SP4 and SP5-SP6 at concentrations of 4.9 ppm, 8.3 pprn and 40 ppm respectively. Xylenes were detected in sample SP3-SP4 at a concentration of 0.096 ppm. Other petroleum hydrocarbons and oxygenates were not detected in the soil stockpile samples. i MTBE was detected by EPA Method 8020 in sample T lA at a concentration of 0.097 ppm. MTBE was detected by EPA Method 8260 in samples TK2A and TK3B at concentrations of 0.32 ppm and 0.0071 ppm, respectively. Other oxygenates and petroleum hydrocarbons were not detected in the samples collected from beneath the USTs. Total lead was detected in each of the six samples anal zed at concentrations ranging from 3.4 ppm to 6.1 ppm. Analytical results of samples are summarized on Table 1: The laboratory report (MAI sample I.D. 16748 through 16757) and chain-of-custody forms are attached. AdrQnced CeoEnvironmcntal,Inc.