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19 November 2002 <br /> AGE-NC Project No. 99-0581 <br /> Page 3 of 4 <br /> ANALYTICAL METHODS <br /> Soil samples were transported under chain-of-custody to Cal Tech Environmental Laboratories <br /> (CTEL), a California Department of Health Services-certified laboratory. Selected samples from <br /> borings P1, P2, P3 and P6 were analyzed for: <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) and motor oil (TPH-mo) in <br /> accordance with EPA Method 8015M; and <br /> • Benzene,toluene,ethylbenzene and xylenes(BTEX)and methyl tertiary-butyl ether(MTBE) <br /> in accordance with EPS Method 8021. <br /> In addition, the samples from borings P3 and P6 were analyzed for: <br /> • Volatile organic compounds,BTEX and MTBE in accordance with EPA Method 8260; and <br /> • CAM 17 Metals in accordance with EPA Method 6010Bn471. <br /> Samples from borings P4 and P5 Were analyzed only for TPH-g and TPH-mo in accordance with <br /> EPA Method 8015M. <br /> FINDINGS <br /> Field observations did not detect the presence of volatile organic compounds (utilizing the OVM) <br /> above background levels or petroleum hydrocarbon-like odor in the soil samples collected. <br /> Analytical results of eight soil samples selected for analysis detected TPH-mo in soil samples <br /> collected from borings P 1,P2 and P4,at a maximum concentration of 1,200 milligrams per kilogram <br /> (mg/kg)in sample P1-10, and TPH-g at a concentration of 1.7 mg/kg in soil sample P4-10. <br /> CAM 17 metals barium,vanadium and zinc were detected in soil samples collected from borings P3 <br /> and P6 at maximum concentrations of 200 mg/kg(P6-10),34 mg/kg(P3-10)and 130 mg/kg(P3-10), <br /> respectively. However, the concentrations fell within the range of background concentrations for <br /> these metals in California soils and well below the total threshold limit concentrations(TTLC) for <br /> hazardous waste established by California. <br /> No other target analytes were detected at or above laboratory detection levels in the analyzed soil <br /> samples. The analytical results are summarized in Tables 1 and 2. Copies of the laboratory reports <br /> (CTL Project No. CT214-0210058 and CT214-0210149), quality assurance and quality control <br /> (QA/QC)report and chain-of-custody forms are included in Appendix A. <br /> Advanced GcoEnvironmmntal.Inc <br />