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21 July 1999 AGE-NC Project No. 99-0604 Page 3 of 6 • TPH-d (diesel) and TPH-mo (motor oil) in accordance with EPA Method 8015 Modified; • Benzene, toluene, ethylbenzene and xylenes in accordance with EPA Method 8020; • Selected CAM 17 metals(cadmium,chromium,lead,nickel and copper)in accordance with EPA Methods 200.7 and 200.9; • Hexavalent chromium in accordance with EPA Method 31213; • pH in accordance with EPA Method 150.1; • Volatile organics in accordance with EPA Method 8260; and • Semi-Volatile organics in accordance with EPA Method 8270. Laboratory reports for ground water analyses, testing methods, laboratory quality assurance/quality control (QA/QC)reports, and sample chain of custody documentation will be presented in a report with the findings and recommendations. 2.4. MONITORING WELL SAMPLE COLLECTION Ground water samples will be collected from the existing monitoring wells and submitted for laboratory analysis. Ground water samples will be analyzed for TPH-g,BTEX and metals following the methods presented in Section 3.3. Additionally, monitoring activities will include recording depth to ground water measurements. Ground water sample collection procedures are described in Section 3.4. 2.5. REPORT PREPARATION Upon completion of field work and receipt of the final laboratory results, a report will be prepared presenting the findings of the investigation. The report will include a description of the work performed and results of the sampling and analysis. Conclusions and applicable recommendations will be included in the report. The report will be in a format acceptable to the PHS-EHD and the CVRWQCB, and will be reviewed and signed by a California Registered Geologist. 3.0. FIELD PROCEDURES All field procedures will be overseen by an AGE representative working under the supervision of a California Registered Geologist. Procedures for soil sampling,ground water sampling, equipment Advanced GeoEnironmental,Inc.