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. 12 March 1999 AGE-NC Project No 97-0333 Page 4 of 6 • Approximately 5 to 10 feet east of product piping sample P6, • Approximately 25 to 35 feet west of product piping sample P5, • Approximately 5 to 10 feet west of product piping sample P4 , • Approximately 5 to 10 feet southwest of UST sample T2-E, • Approximately 5 to 10 feet northeast of UST sample T2-W, • Approximately I5 to 25 feet southwest of UST sample TI-W, and • Approximately 5 to 10 feet northeast of product piping sample P2 Initially, each probe boring will be advanced to 25 feet bsg, total depths of probe borings will be based on field observations and field screening using an organic vapor monitor (OVM) However, AGE will be prepared to advance borings to maximum depths of 50 feet bsg Soil samples will be collected from each boring at five-foot intervals beginning at 5 feet bsg to the total depth Field procedures for advancement of borings and collection of soil/ground water samples are presented in Section 4 1 At least two soil samples and one grab ground water sample from each boring will be submitted for laboratory analysis Selected soil and ground water samples will be analyzed by a State of California Department of Health Services (DHS)-certified laboratory for the following constituents • TPH-g in accordance with EPA Method 8015 Modified/5030, • BTEX and MTBE in accordance with EPA Method 8020, and • Fuel oxygenates including MTBE, tertiary-butyl alcohol (TBA), di-isopropyl ether (DIPS), ethyl tertiary-butyl ether(ETBE) and tertiary-amyl methyl ether(TAME) by EPA Method 8260 Laboratory reports for soil analyses, testing methods, laboratory quality assui ance/quality control (QA/QC) reports, and sample chain of custody documentation will be presented in a report with findings and recommendations 3 3 REPORT PREPARATION Upon completion of field work and receipt of final laboratory analysis, a report will be prepared . presenting the findings of the investigation The report will include a deSLnption of the work performed and results of the sampling and analysis Conclusions and applicable recommendations Adtianrrd GeoEn%iron mental Inc