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ARCADIS <br /> 3.2.3.3 Sampling Collection Procedure <br /> Soil samples will be collected using hand-sampling equipment and/or a direct-push <br /> sampling rig. If hand-sampling equipment is used, upon recovery from the hand auger, <br /> retrieved soil samples will be collected in 1.5- to 2.5-inch-diameter, 6-inch-long brass <br /> or stainless steel tubes or glass jars (as appropriate for the analysis). <br /> If a direct-push sampling rig is used, 1.5-inch-diameter acetate sample tubes will be <br /> advanced beneath the subsurface inside a stainless steel sample probe. Upon recovery <br /> from the sample probe, retrieved soil samples will be cut to a desired length (6 to <br /> 8 inches). <br /> After recovery of the acetate, brass, or stainless steel tubes, the tubes will be capped on <br /> both ends with Teflon®and plastic caps, and labeled properly. After labeling, the soil <br /> samples will be sealed in plastic bags and placed in an ice-chilled cooler for <br /> transportation to the laboratory under proper chain-of-custody (COC) protocols. <br /> Total sample recovery is not always achieved, particularly in loose, gravely, or dry soil <br /> types, or in very stiff or very soft clays. A sufficient sample to conduct the analytical <br /> methods proposed at each location will be collected during fieldwork. <br /> 3.3 Field Quality Control Samples <br /> Equipment rinsate blanks, field blanks, and/or field duplicates are the field QC samples <br /> planned for this PEA. These types of samples are discussed below. <br /> 3.3.1 Equipment Rinsate Blanks <br /> An equipment rinsate blank is a sample that is prepared in the field by pouring <br /> laboratory-grade deionized or distilled water through and over cleaned sampling <br /> equipment. The water is then collected and analyzed as a sample. The equipment <br /> rinsate blank gives an indication of contamination from field procedures (e.g., <br /> improperly cleaned sampling equipment or cross-contamination). <br /> Equipment rinsate blanks will be collected at a minimum frequency of one per set of <br /> sampling equipment per field event during which non-dedicated sampling equipment is <br /> used. The equipment rinsate blanks will be submitted to the laboratory "blind" (i.e., <br /> given a fictitious identification number so that the laboratory will not recognize them as <br /> blanks). The equipment rinsate blanks will be analyzed by the same method, and for the <br /> same analytes, as the samples collected with the sampling equipment. The analytical <br /> goal for equipment rinsate blanks is to have no detectable analytes. <br /> Page 18 wp-PEA-Gordon-Jul10-RV009808.doc: <br />