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3.3 Sampling Technique <br /> 3.3.1 Potential Soil Sampling <br /> Although the proposed monitor well site is approximately 100 feet from the former gasoline tank <br /> location and no hydrocarbon presence is anticipated in the soil column, each soil sample will be <br /> screened for the presence of hydrocarbon vapor using an Organic Vapor Analyzer (OVA) or a <br /> Photo Ionization Detector (PID) Should above background hydrocarbon levels be found in the <br />' soil samples, those samples will be analyzed for BTEX and TPH-G. <br /> If soil samples are collected for analysis, the metal sleeves used to collect the soil samples will <br />' be capped with Teflon lined plastic end caps secured with tape The sleeves will be labeled and <br /> placed into zxplock plastic bags for temporary storage in a cooler pending transport to the <br /> laboratory <br />' 3.3.2 Groundwater Samples <br />' Groundwater sampling of MW-4 will be conducted and reported as part of the existing quarterly <br /> monitoring program Before sampling, the groundwater elevation will be measured and recorded <br /> and the well will be purged of three to five casing volumes in order to obtain a representative <br />' groundwater sample As a routine part of the monitoring program, the groundwater physical <br /> parameters of temperature, electrical conductivity and pH will be measured and recorded. <br />'• The samples will be collected using a teflon bailer equipped with a thin nylon line. Groundwater <br /> collected in the bailer will be poured into the sample containers to minimize aeration of the <br />' sample. Containers will be completely filled and then tightly capped The sample containers <br /> will then be labeled, sealed into individual ziplock baggies, and placed into an insulated cooler <br /> with ice <br />' 3.4 Equipment Decontamination <br /> ' All non-disposable equipment used will be decontaminated prior to sampling and between sample <br /> points A solution of tap water and a laboratory grade cleaning detergent will be used to clean <br /> the equipment and delomzed water of known quality will be used for rinsing <br /> ' 3.5 Sample Storage and Shipping <br /> P g <br /> ' Immediately after collection, labeling and logging, the groundwater samples will be placed in <br /> an insulated chest along with sealed bags of ice for temporary storage in the field and subsequent <br /> transportation to the laboratory The samples will be transported to the laboratory by WESTON <br /> ' personnel <br /> ' RKSNMCMAWK PLN 6 OW1N2 <br />