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3.2 PROCEDURE <br /> This section describes the procedures for collection, labeling, handling, <br /> tracking and field quality assurance for soil samples collected using <br /> hollow-stem augers. <br /> 3.2.1 Soil Samples <br /> Soil borings will be drilled using a truck-mounted hollow-stem auger. <br /> Continuous soil samples will be collected from the surface of the until <br /> groundwater is intercepted. Soil samples will be collected at intervals <br /> two-and-one-half-feet deep, using an 18-inch long by 2-inch diameter <br /> split-spoon sampler lined with three 6-inch stainless steel or brass <br /> sample tubes. The split-spoon sampler will be driven ahead to the <br /> hollow-stem auger to collect soil samples. <br /> Soil borings will be drilled with hollow-stem augers and sampled at the <br /> intervals specified in the workplans. Sampling shall be done in <br /> advance of the lead auger to minimize potential cross-contamination. <br /> Samples for laboratory analysis shall be taken with a California-modi- <br /> fied sampler or continuous soil samplers with inner liners. If the Cali- <br /> fornia-modified sampler is used, it shall be driven using a 140-pound <br /> hammer with a 30-inch drop. Standard blow counts shall be recorded <br /> for driving the sampler 6 and 12 inches (ASTM Method D 1586). <br /> Upon retrieval of the sampler, the liners shall be removed from the <br /> sampler and placed on a flat surface for evaluation. The top and bot- <br /> tom of the core and sampled interval will be marked on the liners. <br /> The ends of each liner containing soil to be submitted for analysis shall <br /> be covered with Teflon film before being covered with plastic caps. <br /> Each submitted sample will be labeled with the boring number, bottom <br /> depth of liner, date and time of sampling, the individual performing <br /> the sampling, and job number. Figure 1 is an example of a typical sam- <br /> ple label. The labeled liners shall be placed in self-sealing plastic bags in <br /> a cooler with ice or frozen ice packs for storage until they are delivered <br /> to the analytical laboratory. <br /> The remainder of the sample shall be classified using visual manual <br /> methods (ASTM D-2488-84). The logged sample shall be discarded for <br /> subsequent disposal. <br /> A boring log will be completed for each borehole using a form similar <br /> to the sample drilling log form shown in Figure 2. The field notebook <br /> and/or data collection forms will contain the following information: <br /> • Project name and number. <br /> • Drilling company name. <br /> 3-2 <br />