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1 <br /> S E C 0 R <br /> ATTACHMENT 2 <br /> FIELD AND LABORATORY PROCEDURES <br /> HydroPunch® Groundwater Sampling <br /> Subsurface stratigraphy will be characterized using a cone penetrometer system to target sample <br /> depths before HydroPunch® borings are advanced and groundwater samples are collected. To <br /> prevent potential leakage of non-target zone groundwater into the sample apparatus, 0-rings or <br /> Teflon® tape will be installed at all drive rod joints and other connection points on the sample <br /> apparatus. After the sampler is driven to the desired depth, but before the sampler is retracted to <br /> expose the screen, a water level meter will be used to check for the presence of non-target zone <br /> water in the drive rods and sampler. The HydroPunchO sampler will be retracted only enough to <br /> allow water to enter the screen. In no case will the sampler be retracted such that the screen is open <br /> across multiple water bearing zones. The HydropunchO, rods, and any other reusable sample <br /> collection equipment will be decontaminated prior to use at other target depths. <br /> Laboratory Procedures <br /> Selected soil samples from the Geoprobe® assessment, hydropunch grab groundwater samples, and <br /> groundwater samples from the wells installed within the deeper water-bearing zone (if installed) will <br /> be analyzed for the presence of TPHd by EPA Method 8015M; and TPHg, BTEX, fuel oxygenates <br /> (MtBE, TAME, DIPS, EtBE, TBA, ethanol), 1,2-DCA, and EDB using EPA Method 82608 (single <br /> run). <br /> Soil Cuttings and Rinsate/Purge Water Disposal <br /> Soil cuttings, rinsate water generated during steam cleaning of equipment, and purge water from the <br /> development of the wells will temporarily be stored in DOT-approved, 55-gallon steel drums pending <br /> characterization by Filter Recycling Services, ConocoPhiflips' waste disposal contractor. Once <br /> approved, FRS will transport the drums containing soil cuttings and rinsate/purge water to their <br /> facility for treatment/recycling. Soil cuttings and rinsate/purge water will be temporarily stored on-site <br /> for approximately 4 to 8 weeks. <br />