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' Work Plan—Soil Boring AnPallation Page 3 <br /> 612 N.Buena Vista Ave. <br /> ' Project 480.2 <br /> February 7, 2005 <br /> 2.2 Soil Sampling and Analyses <br /> ' The soil sample collection procedure will be as follows. Upon retrieval, the soil <br /> samples will be described and log. The end of each plastic sample tube removed <br /> from the coring device and possibly submitted for laboratory analysis will be <br /> ' sealed with Teflon sheets, capped with plastic end caps, secured with tape, <br /> labeled and placed in a cooler at 4° Celsius. It is not expected that any soil <br /> ' samples will be submitted for laboratory analysis. The will, however be retained <br /> in Geo-Phase Environmental Inc.'s sample refrigerator pending the results of <br /> groundwater sample analysis. <br /> All sampling equipment will be thoroughly cleaned before and between uses. No <br /> soil cuttings will be generated during the Geo-Probe drilling process. <br /> ' 2.1.3 Groundwater Sample Collection & Analysis <br /> Groundwater samples will be collected using the Geo-Probe's groundwater <br /> ' sampling device. This consists of a four-foot long hollow rod fitted with a drive <br /> point, which is attached to the end of the Geo-Probe stem. This rod is driven up <br /> to four feet into groundwater and retracted to expose the stainless steel screen <br /> inside of the device. <br /> ' Groundwater samples will be obtained by oscillating a clean dedicated section of <br /> Teflon tubing fitted with a check valve inserted inside of the hollow stem of the <br /> Geo-Probe. This causes groundwater to rise to the surface. Samples will be <br /> ' collected in 1-liter amber glass bottles and 40-mm VOA vials. Each sample <br /> container will then be labeled and placed into an ice chest chilled to 4°C to await <br /> transport to the laboratory under chain of custody protocol. <br /> It is anticipated that three groundwater samples submitted for analysis as <br /> follows: <br /> ' • Totalg asoline range Petroleum Hydrocarbons (TPH-G) by EPA method <br /> ' 8015(m)/5030 <br /> • Total Benzene, Toluene, Ethylbenzene, and Xylene (BTEX) <br /> • 5 gasoline oxygenates including MTBE by EPA method 8260. <br /> Compound TPH BTEX MTBE 8260 <br /> Detection Limit 50 0.3 2.0 <br /> ' Units /L /L /L <br /> In addition, the content of chlorides and electrical conductivity will be measured <br /> to assess the salt content. <br /> 2937 Veneman Avenue, Suite B240 Geo-Phase Environmental Inc. Phone: (209)569-0293 <br /> Modesto, Ca 95356 Fax: (209)569-0295 <br />