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LFR Levine-Fricke Revrsed After sample collection using either rnethod, the vials will then be capped with no head space, labeled, and placed in an ice-chilled cooler, for transport to a CDHS-certtfied laboratory for analysis under standard chain-of-custody protocol Sample equipment will be washed with AIconox detergent solution and raised with distilled water between sampling locations to mmirLP cross contamination Soils cuttings (if any), decontamination fluids, and purged groundwater will be placed in California Department of Transportation-approved 55-gallon drums or large ?_[I-cubic-yard soil bins for temporary storage pending disposal (see Appendix C of the Draft RDFS Work Plan) 9.2.6 Vapor Sampling Vapor samples will be collected from soil vapor extraction or monitoring wells. VOC concentrations will be measured either in the field (with a PID) or in the laboratory, as discussed in Section 5 and Tables 1 and 2 of this Work Plan. 9.2.6.Y Vapor Field Screening Field screening samples will be collected from vapor monitoring wells and SVE wells during the pilot tests Samples will be collected in 1 later Tedlar bags for screenuig of total VOCs, percent oxygen, and percent carbon dioxide Samples will be collected using a vacuum pump connected to a vacuum chamber housing the Tedlar bag fhe Tedlar bag will be connected to the SVE well sampling port using inert Teflon tubing that passes through the wall of the vacuum chamber. To retrieve a vapor sample under vacuum, and to overcome the vacuum in the extraction or monitoring well, a small vacuum pump will be connected to the chamber and a vacuum will be applied When the vacuum in the chamber snatches or slightly exceeds the vacuum in the well, soil vapor will flow from the well into the Tedlar bag contained in the chamber Once filled, the Tedlar bag will be connected to the field instrument for measurement of the specific gas VOC monitoring will be performed with a field PID equipped with an 11.4 eV lamp Oxygen and carbon dioxide concentrations will be treasured using a Gaster oxygen and carbon dioxide meter. 9.2.6.2 Laboratory Sample Collection So$-vapor samples will be collected from the SVE wells using 1-liter Tedlar bags for subsequent TO-14 laboratory analysis, as required by this Work Plan. The frequency of sample collection usmg Tedlar bags will be conducted in accordance with Tables 1 and 2 of this Work Plan The sampling will be performed using the protocol identified in Section S 2 6 1 The Tedlar bags will be shipped to the laboratory under standard chain-of-custody procedures Samples will be analyzed for VOCs using EPA Method TO-14 by Air Toxics Laboratory, a California state-certified analytical laboratory (as described in age 32 +npSYEC6-Lodrrex-08123 doe[fr 02'120 d 8€T0t79t760ZT 01 9060 2S9 01S ANDD J 3NIA31 837 dd Lb 9T 20, 60 -inf