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29 October 2003 <br /> AGE-NC Project No. 96-0235 <br /> Page 3 of 4 <br /> that approximately 340 cubic yards of contaminated soil will be excavated resulting in a total of up <br /> to 4 soil stockpile samples to be submitted for laboratory analysis.Disposition of excavated soil will <br /> be determined based on the results of the proposed soil stockpile sample analysis. Field procedures <br /> for collection of soil samples are presented in Section 5.2. <br /> The samples collected from the excavation area will be analyzed for: <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) and diesel (TPH-d) in <br /> accordance with EPA Method 8015 modified; and <br /> • Benzene, toluene, ethyl benzene and total xylenes (BTEX) and fuel additives including <br /> mehtyl tertiary-butyl ether (MTBE), ethyl tertiary-butyl ether (ETBE), di-isopropyl ether <br /> (DIPE), tertiary-amyl methyl ether (TAME), tertiary butanol (TBA), 1,2-dibromoethane <br /> (EDB) and 1,2-dichloroethane (1,2-DCA) in accordance with EPA Method 8260B. <br /> 4.0. REPORT PREPARATION <br /> Following completion of the overexcavation, a report will be prepared presenting the findings. In <br /> addition,quarterly ground water monitoring reports will include a description of work performed and <br /> the results of the groundwater sampling and analysis and include a section detailing operation and <br /> performance of the ground water extraction system. Conclusions and recommendations will also be <br /> included in the reports preparing the site for closure. The report will be in a format acceptable to <br /> CVRWQCB guidelines, and will be reviewed and signed by a California Registered Geologist. <br /> 5.0. FIELD PROCEDURES <br /> All field procedures will be overseen by an AGE representative under the supervision of a California <br /> Registered Geologist. Procedures for soil and ground water sampling and over-excavation are <br /> described below. <br /> 5.1. SOIL EXCAVATION <br /> Soil will be excavated using a backhoe or an excavator.Excavated soil will be field-screened for the <br /> presence of volatile organic compounds using an organic vapor meter (OVM). Based on OVM <br /> readings and field observations, excavated soil will be segregated into `clean' soil and petroleum <br /> hydrocarbon-impacted soil stockpiles; excavated soils with OVM readings above background air <br /> Advanced GeoEnvironmental.Inc. <br />