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2.2.1 Soil Sampling and Analysis <br /> During drilling, soil samples will be collected from each soil boring at 5-foot intervals using a <br /> modified California split-spoon sampler lined with brass sleeves. A field geologist will log all soil <br /> samples for hydrogeologic and lithologic characteristics according to the Unified Soil Classification <br /> System and screen each sample for any hydrocarbon vapors using an organic vapor monitor, <br /> equipped with a photoionization detector (PID). One of the soil borings will be continuously cored <br /> for detailed logging and soil sampling. Soil samples from the continuously cored soil boring will be <br /> collected by manually filling a brass sleeve with the cored soil. <br /> Based on field observations and measurements with the PID, 2 soil samples from each of the 6 soil <br /> borings will be selected for laboratory analysis Any sail sample with an organic vapor detection <br /> and/or observable contamination and the first deeper soil sample without a detection will be <br /> submitted to the laboratory for analysis. If observable contamination and/or organic vapors are <br /> detected in 1 or more soil samples from a given soil boring, the sample with the highest <br /> concentration of organic vapors and the first deeper soil sample without detection (or the soil <br /> sample from the capillary fringe if no deeper soil sample without detection exists) will be submitted <br /> for analysis. If organic vapors are not detected in any of the soil samples, 1 capillary fringe soil <br /> sample and 1 vadose zone soil sample will be submitted for analysis. Final soil sample selection <br /> will be reviewed with PHS/EHD, prior to laboratory submittal. <br /> Selected soil samples will be packaged in an iced cooler and transported under chain-of-custody <br /> documentation to a state of California-certified hazardous waste testing laboratory for analysis. <br /> Each of the soil samples will be analyzed on a standard turn-around time of 5 to 7 working days for <br /> TPH-as-diesel, TPH-as-gasoline, BTEX and methyl tertiary butyl ether (MTBE) by Modified EPA <br /> Methods 8015 and 8020. <br /> Two soil samples will also be analyzed for physical parameters. The physical parameters to be <br /> tested include permeability, porosity, dry bulk density, moisture and organic carbon. The samples <br /> to be analyzed for physical parameters will be selected in the field, based on soil types encountered <br /> and after consulting with PHS/EHD. <br /> 2.2.2 Groundwater-Grab„Sampling and Analysis <br /> At the top of the groundwater-bearing zone in each of the 6 sample locations, a push driven <br /> groundwater sampling device (Hydropunche or equivalent) will be used to collect a groundwater <br /> grab sample. <br /> 7 <br />