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AGE Standard Operating r ocedures AdvancedGeo <br />Geoprobe Soil Borings <br /> Environmental <br />Page 2 of 6 <br />the soil borings. Several borings maybe required surrounding any the proposed boring <br />locations to determine the lateral extent of soil and groundwater contamination. <br />LABORATORY ANALYSIS <br />Selected soil samples will be analyzed selectively by a California Department of Public <br />Health (CDPH)-certified laboratory for some of the following constituents: <br />TPH-ALL in accordance with EPA Method 8015 Modified. <br />Volatile organic compounds: benzene, toluene, ethylbenzene, and xylenes (BTEX) <br />and fuel oxygenates MTBE, di-isopropyl ether (DIPE), ethyl tertiary-butyl ether <br />(ETBE), tertiary-amyl methyl ether (TAME), and tertiary butanol (TBA) and lead- <br />based fuel scavengers ethylene dibromide (EDB) and 1,2-dichloroethane (1,2- <br />DCA) in accordance with EPA Method 8260B. <br />Laboratory reports for soil sample, groundwater and soil-vapor analyses, testing methods, <br />laboratory quality assurance/quality control (QA/QC) reports, and sample chain-of- <br />custody documentation will be presented in a report with the findings and <br />recommendations. <br />FIELD PROCEDURES <br />All field procedures will be overseen by an AGE representative under the supervision of <br />a California Professional Geologist. Procedures for advancing soil probe borings, <br />collection and analysis of soil and groundwater samples, boring abandonment, equipment <br />decontamination and sample handling are presented below. <br />SOIL PROBE BORING ADVANCEMENT <br />Proposed soil borings will be advanced using a truck mounted AMS Powerprobe 9600 or <br />Geoprobe 5400 direct-push probing unit equipped with 1.25-inch probing rods. The <br />Powerprobe or other probe advances soil probe borings using a hydraulic hammer to <br />drive soil and groundwater sampling tools to specified depths.