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Work Plan- Phase IIA ESA Page 3 <br /> Former Karlson Trucking Facility <br /> Project No. 191.2 <br /> September 22, 1998 <br /> A PID with a detector lamp capable of ionizing hydrocarbons with a first <br /> ionization potential of less than 10.7 eV may also be used to screen soil <br /> samples. <br /> 2.1.2 Soil Sampling and Analyses <br /> Each soil sample collected for possible analytical evaluation will be preserved <br /> for laboratory analysis as follows. Nitrile gloves will be worn during the <br /> entire sample collection process and changed between the collection of each <br /> sample. Aluminum foil will be placed over each end of the sample tube with <br /> care taken not to touch the portion of foil in contact with the soil or the end of <br /> the sample tube. Each tube will then be capped with plastic end caps and the <br /> ends taped with duct tape. On the duct tape and a sample label affixed to <br /> each tube, information about the sample will be recorded including date and <br /> time collected, sampling interval and the boring from which the sample was <br /> collected. Each sample will then be placed into an ice chest chilled to 4°C to <br /> await transport to the laboratory under chain of custody protocol. A chain of <br /> custody is a document describing each sample, who has custody of the <br /> samples at a given time and how each sample is to be analyzed. <br /> Soil samples will be shipped to Sherwood Labs (DHS #1400), of Hilmar, <br /> California, for analysis. Note that not all soil samples collected are likely to <br /> be submitted for laboratory analysis. Field observations, as recorded in the <br /> boring logs, and the purpose of the investigation will suggest which samples <br /> are appropriate for analysis. It is not anticipated that the soil samples will <br /> be analyzed unless groundwater samples contain detectable levels of <br /> petroleum hydrocarbons or other contaminants (see below) or field screening <br /> (measurable PID readings, odor or staining) suggest that additional samples <br /> should be tested. <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 <br /> drive point which is attached to the end of the Geo-Probe stem. This rod is <br /> driven four feet into groundwater and retracted to expose the stainless steel <br /> screen inside of the device. <br /> Groundwater samples will be obtained by oscillating a clean dedicated <br /> section of Teflon tubing inserted inside of the hollow stem of the Geo-Probe. <br /> This causes groundwater to rise to the surface. Samples will be collected in 1 <br /> liter amber glass bottles and 40 ml VOA vials preserved with Hydrochloric <br /> 2937 Veneman Avenue, Suite B240 Geo-Phase Environmental Inc. Phone: (209)569-0293 <br /> Modesto, Ca 95356 Fax: (209)569-0295 <br />