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During the pilot study (Phase II) , ground water samples will be collected <br /> from neutron probe monitoring tubes MT-1 , MT-3, and MT-5. These samples <br /> will be collected at the beginning, middle, and end of the pilot study <br /> activities. A ground water sample will also be collected from MW-206 (an <br /> existing extraction well that will be used for both the pilot and full- <br /> scale systems) at end of the pilot study activities. Filtered and <br /> unfiltered ground water samples will be analyzed for arsenic, copper, <br /> hexavalent chromium, and total chromium. Field measurements of pH, <br /> temperature, total dissolved solids, and specific conductance will also be <br /> recorded for each ground water sample. <br /> During operation of the full-scale flushing system (Phase IV) , ground <br /> water samples will be collected from the neutron probe monitoring tubes, <br /> two existing piezometers, and the extraction wells (MW-206, MW-214 and EW- <br /> 2) on a quarterly basis. The filtered and unfiltered groundwater samples <br /> will be analyzed for arsenic, copper, hexavalent chromium, total chromium, <br /> and total dissolved solids. Field measurements of pH, temperature, total <br /> dissolved solids, and specific conductance will also be recorded for each <br /> ground water sample. <br /> Hargis and Associates, Inc. (Hargis) is currently monitoring water levels <br /> and collecting ground water samples from monitoring wells and piezometers <br /> at MCTC' s facility. MCTC and Black & Veatch will continue to receive the <br /> Hargis results throughout all four phases of the flushing project. These <br /> results will provide additional data concerning contaminant concentrations <br /> in the vicinity of the retort pit. <br /> 3.2.3 Lysimeter Sampling <br /> During the Phase II pilot study activities, pore water samples will be <br /> collected from L-242,243,244. One sample will be collected at the <br /> beginning and end of the pilot study. The concurrent lysimeter sampling <br /> by Kleinfelder may be substituted for• either pilot study sampling event, <br /> if Kleinfelder' s sampling schedule coincides within two weeks of the pilot <br /> study lysimeter sampling. <br /> During the Phase IV full-scale flushing system operation, Kleinfelder will <br /> continue to collect pore water samples from all the operational lysimeters <br /> (L-242,243,244, L-246,247,248, L-301,302, and L-303,304) located in the <br /> vicinity of the retort pit area. Lysimeter samples will be collected <br /> quarterly and will be submitted for arsenic, copper, hexavalent chromium, <br /> and total chromium analysis. <br /> 3.3 SAMPLE MANAGEMENT <br /> 3.3.1 Sample Packaging and Shipment <br /> Immediately after water and soil samples are obtained, the sample label <br /> will be completed with the sample date, sample number, sampler's initials, <br /> and analyses to be performed. The sample date, sample number and <br /> sampler' s name will be filled in on the sample seal and the seal affixed <br /> on the sample container so that it covers the container cap. The sample <br /> will be preserved as required and placed in a shipping container or a <br /> cooler with ice to keep the sample cool (4°C). <br /> 11654.652 3-4 <br />