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' Sample Preservation and Handling <br /> The following section specifics sample containers, preservation methods, and <br /> sample handling procedures <br /> ' Sample Containers and Preservation <br /> Sample containers vary with each type of analytical parameter Container types <br /> and materials will be selected to be non-reactive with the particular analytical <br /> parameter tested <br /> ' Sample Handling <br /> Sample containers will be labeled immediately following collection Samples will be <br /> ' kept cold (4°C) with cold packs until received by the laboratory Cold packs will be <br /> replaced each day to maintain refrigeration At the time of sampling, each sample <br /> will be logged on a Sampling and Analysis Chain-of-Custody Record (see Figure 6) <br /> that will accompany the sample to the laboratory Temperature of sample will be <br /> recorded at time of receipt by the laboratory <br /> Samples will be transferred from the site to a state-certified laboratory by the <br /> sampling team Sample shipments from DK Barber PE & Associates to <br /> laboratories performing the selected analyses routinely occur within 24 hours of <br /> sample receipt The laboratory manager will check the holding times for requested <br /> analyses so that they are not exceeded Soil sample for hydrocarbons shall be <br /> handled in accordance with the California State Water Resources Control Board <br /> LUFT Field Manual, 1989 Revision, Appendix C (LUFT Field Manual) incorporated <br /> with the following <br /> ' Care should be taken throughout to avoid contamination of both the inside and <br /> outside of the cylinder and its contents <br /> Sample homogenization should not be performed on samples intended for volatile <br /> and semi-volatile organic analysis since the mechanical action of mixing exposes a <br /> larger surface area of the contaminated soils and other solids in the samples to the <br /> ' air, thus increasing the total amount of volatilization <br /> Samples should be kept cold (4°C) at the laboratory until they are analyzed <br /> Holding time should not exceed 14 days from the time of collection If necessary, <br /> cold soil cores should be removed from the cylinders by spot heating the cylinder <br /> and immediately extruding the sample (or a portion of it) A portion of the cold <br /> C - 9 <br /> r <br />