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used to collect samples. The flat bottom of the scoop will be pressed against the bank-and <br /> the water will flow with little disturbance into the scoop. Samples collected with a dipper <br /> or scoop will be transferred into the appropriate sample containers. Spring (or surface <br /> water) samples will be filtered as required. <br /> Leachate Sampling <br /> If leachate sampling and analysis is required, samples will be collected after purging <br /> approximately one casing volume using a Teflon bailer. Leachate samples will be filtered <br /> as required and transferred into the appropriate containers. <br /> Lysimeter Sampling <br /> If lysimeter sampling and analysis is required, a vacuum will be applied to the lysimeters <br /> only if an electrical conductivity monitor indicates that the soil-moisture content and soil <br /> suction are'adequate for attempting to collect a sample. Vacuum and pressure will be <br /> alternately applied to the lysimeters over a 72-hour period to achieve the sample volumes <br /> required for analysis. If sufficient sample volume is not obtained within 72 hours, the <br /> lysimeter will be recorded as dry for monitoring period and suction will be reapplied <br /> during the next monitoring event. <br /> SAMPLE PRESERVATION AND HANDLING <br /> The following section specifies sample containers, preservation methods, and sample <br /> handling procedures. <br /> Sample Containers and Preservation <br /> Sample containers vary with each type of analytical parameter. Container types and <br /> materials will be selected to be nonreactive with the particular analytical parameter tested. <br /> Specific sample volume, container types, and preservation requirements are presented in <br /> Table A-1. <br /> Sample Handling <br /> Sample containers will be labeled immediately following collection. Samples will be kept <br /> cool with cold packs until received by the laboratory. Cold packs will be replaced each <br /> day to maintain refrigeration. At the time of sampling, each sample will be logged on a <br /> Sampling and Analysis Chain-of-Custody Record (see Figure A-3) that will accompany <br /> the sample to the laboratory. <br /> The sampling team transfers the samples from the site to Columbia Analytical Services' <br /> SAGpp,093M390040.6e1-93 Ifc:3 A-5 Rev.0 November 12.1993 <br />