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22 February 2008 <br /> AGE-NC Project No. 07-1586 <br /> Page 3 of 4 <br /> of porous concrete. Proposed probe boring locations are illustrated on Figure 2. <br /> Each boring shall be advanced to a depth of approximately 2.5 feet bsg. Soil samples will be <br /> collected from 1-foot and 2.5-feet bsg in each boring. Field procedures for advancement of probe <br /> borings and collection of soil samples are presented in Sections 4.1 and 4.2. <br /> Selected soil samples will be submitted for laboratory analysis. Selected samples will be analyzed <br /> by a State of California Department of Public Health(CDPH)-certified laboratory for one or more <br /> the following constituents: <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) and motor oil (TPH-mo) in <br /> accordance with EPA Method 8015M; <br /> • Volatile organic compounds,including benzene,toluene,ethylbenzene and xylenes(BTEX), <br /> and methyl tertiary-butyl ether(MTBE) in accordance with EPA Method 826013; and <br /> • CAM 17 Metals in accordance with EPA Method 6010B. <br /> Samples will be analyzed using a 5-day turn-around time.Laboratory reports for soil analyses,testing <br /> methods, laboratory quality assurance/quality control reports, and sample chain-of-custody <br /> documentation will be presented in a report with findings and recommendations. <br /> 3.3. REPORT PREPARATION <br /> Upon completion of field work and receipt of final laboratory analyses, 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 may be included in the report. <br /> 4.0. FIELD PROCEDURES <br /> All field procedures will be overseen by an AGE representative under the direction of a California <br /> Professional Geologist. Procedures for the advancement of borings, soil sampling, equipment <br /> decontamination and sample shipment are outlined below. <br /> 4.1. PROBE BORING ADVANCEMENT <br /> Probe borings will be advanced using a van-mounted Geoprobe 5400 direct-push probing unit <br /> Advanced GeoEnvironmental,Inc. <br />