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15 September 2003 <br />AGE-NC Project No. 03-1064 <br />Page 4 of 6 <br />the septic system leach fields; one soil boring will be advanced within a debris pile at the rear of the <br />property; and one soil boring will be advanced at the 2509 building. The proposed probe boring <br />locations may be modified due to field conditions. <br />The proposed probe boring locations are illustrated in Figure 2. Field procedures for advancement <br />of probe borings and collection of soil samples are presented in Sections 4.1 and 4.2. <br />Selected soil samples from each probe boring will be submitted for laboratory analysis. The selected <br />soil samples will be analyzed by a State of California Department of Health Services (DHS)-certified <br />laboratory for one or more the following constituents: <br />Total petroleum hydrocarbons quantified as gasoline (TPH-g) and diesel (TPH-d) in <br />accordance with EPA Method 5030/8015M; <br />Volatile organic compounds, including benzene, toluene, ethylbenzene and xylenes (BTEX), <br />and the fuel additives tertiary butanol (TBA), di-isopropyl ether (DIPE), ethyl tert-butyl ether <br />(ETBE), tert-amyl methyl ether (TAME), methyl tertiary- butyl ether (MTBE), <br />1,2-dichloroethane (1,2-DCA) and 1,2-dibromoethane (EDB) in accordance with EPA <br />Method 8260B; <br />Soil pH in accordance with EPA Method 9040; and <br />Cam 17 metals in accordance with EPA Method 6010. <br />Laboratory reports for soil analyses, testing methods, laboratory quality assurance/quality control <br />(QA/QC) reports, and sample chain of custody documentation will be presented in a report with <br />findings and recommendations. <br />3.4. REPORT PREPARATION <br />Upon completion of field work and receipt of final laboratory analysis, a report will be prepared <br />presenting the findings of the investigation. The report will include a description of the work <br />performed and results of the sampling and analysis. Conclusions, applicable recommendations, and <br />maps will be included in the report. <br />4.0. FIELD PROCEDURES <br />All field procedures will be overseen by an AGE representative under the supervision of a California <br />Registered Geologist. Procedures for the advancement of borings, soil sampling, .ground water <br />sampling, equipment decontamination and sample shipment are outlined below. <br />Advanced GeoEnvironmental, Inc.