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Work Plan—Soil Boring Installation Page 3 <br /> Malott's Honda Yamaha <br /> Project 328.2 <br /> August 27, 2001 <br /> Custody protocol. Chain of Custody (CofC) forms are documents used to track the handling <br /> of samples. All dates, times, persons and companies handling the samples were listed from <br /> the time the sample was collected to its ultimate disposal. <br /> All sampling equipment will be thoroughly steam cleaned before and between uses. No soil <br /> cuttings will be generated during the Geo-Probe drilling process. <br /> If no field evidence is found to suggest contamination is present, there will be no initial <br /> laboratory analysis of the soil samples. They will be held pending results of the groundwater <br /> analysis (see below). <br /> 2.1.3 Groundwater Sample Collection & Analysis <br /> Groundwater samples will be collected using the Geo-Probe's groundwater sampling device. <br /> This consists of a four-foot long hollow rod fitted with a drive point, which is attached to the <br /> end of the Geo-Probe stem. This rod is driven four feet into groundwater and retracted to <br /> expose the stainless steel screen inside of the device. <br /> Groundwater samples will be obtained by oscillating a clean dedicated section of Teflon <br /> tubing inserted inside of the hollow stem of the Geo-Probe. This causes groundwater to rise <br /> to the surface. Samples will be collected in 1-liter amber glass bottles and 40-mm VOA <br /> vials. Each sample container will then be labeled and placed into an ice chest chilled to 4°C <br /> to await transport to the laboratory under chain of custody protocol. <br /> It is anticipated that three groundwater samples submitted for analysis as follows: <br /> • Total Extractable Petroleum Hydrocarbons (TEPH) by EPA method 8015(m)/3510 <br /> (water) <br /> • Total gasoline range Petroleum Hydrocarbons (TPH-G) by EPA method <br /> 8015(m)/5030 <br /> • Total Benzene, Toluene, Ethylbenzene, and Xylene by EPA method 602 <br /> Compound TPH TEPH BTEX <br /> Detection Limit 50 50 0.3 <br /> Units L L L <br /> 2937 Veneman Avenue, Suite B240 Geo-Phase Environmental Inc. Phone: (209)569-0293 <br /> Modesto, Ca 95356 Fax: (209)569-0295 <br />