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i 30 November 1998 AGE-NC Project No. 98-0520 ' Page 3 of 9 Selected soil samples will be analyzed by a California Department of Health Services (DHS)- certified laboratory for the following constituents: ' TPH-mo by EPA Method 8015.Modified/5030; • TPH-g by EPA Method 8015 Modified/5030; ' Benzene, toluene, ethylbenzene, and total xylenes (BTEX) by EPA Method 8020; and • Fuel oxygenates including methyl tertiary-butyl ether (MTBE), tertiary-butyl alcohol (TBA), di-isopropyl ether (DIPS), ethyl tertiary-butyl ether (ETBE) and tertiary-amyl methyl ether (TAME) by EPA Method 8260. ' Selected soil samples collected in the vicinity of the former waste oil UST will be analyzed for the following additional constituent: ' Halogenated volatile organic compounds by EPA Method 8010. Laboratory reports for soil analyses, testing methods, laboratory quality assurance/quality control (QA/QC) reports, and sample chain of custody documentation will be presented in a report with findings and recommendations. 1 2.3. IN-SITU GROUND WATER SAMPLE COLLECTION AND ANALYSIS . Dunn the soil assessment activities.grab round water samples will be collected and analyzed from g , g g p Y each of the soil probe borings (Figure 2). In-situ ground water sample collection procedures are ' presented in Section 3.3. Selected groundwater samples will be analyzed by a DHS-certified laboratory for the following constituents: • TPH-mo by EPA Method 8015 Modified/5030; • TPH-g by EPA Method 8015 Modified/5030; • BTEX by EPA Method 8020; •' Oxygenating compounds including MTBE, TBA,DIPS, ETBE, and TAME by EPA Method 8260; and ' Halogenated volatile organic compounds by EPA Method 8010. ' Advanced GeoEnvironmental,Inc.