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Organic Vapor Procedures <br /> Soil samples collected at 5-foot depth intervals during drilling will be analyzed in the field <br /> for ionizable organic compounds using a flame-ionization detector (FID) or a photo- <br /> ionization detector (PID) with a 10 2 eV lamp The test procedure will involve measuring <br /> approximately 30 grams from an undisturbed soil sample, placing this subsample in a <br /> ZiplockTm-type bag or in a clean glass ,lar, and sealing the lar with aluminum foil secured <br /> under a ring-type threaded lid The container will be warmed for approximately 20 minutes <br /> (in the sun), then the head-space within the container will be tested for total organic vapor, <br /> measured in parts per million as benzene (ppm, volume/volume) The instrument will be <br /> calibrated prior to drilling The results of the field testing will be noted on the boring logs <br /> FID/PID readings are useful for indicating relative levels of contamination, but cannot be <br /> used to evaluate hydrocarbon levels with the confidence of laboratory analyses <br /> Laboratory Procedures <br /> Selected soil samples will be analyzed for the presence of total petroleum hydrocarbons <br /> calculated as gasoline (TPH-g), benzene, toluene, ethylbenzene, xylenes (BTEX) and methyl <br /> tertiary-butyl ether (MtBE) using EPA Methods 8015 Modified and 8020, with MtBE <br /> confirmation of the highest detected MtBE concentration from each boring using <br /> . EPA Method 8260 1,2-dichloroethane (1,2-DCA), ethylene dibromide (EDB) and total lead <br /> will also be analyzed in the MtBE confirmation soil samples Groundwater monitoring well <br /> samples will be analyzed for the presence of TPH-g, BTEX, and for five oxygenates, 1,2- <br /> DCA and EDB using EPA Methods 8015 Modified, 8020 and 8260, respectively <br /> Soil Cuttings and Purge Water <br /> Soil cuttings generated during drilling operations will be temporarily stored on site and <br /> covered with plastic sheeting pending characterization and disposal A Califorma-certified <br /> disposal contractor will remove soil cuttings to an appropriate disposal facility Water <br /> generated during steam cleaning, development, and sampling of wells will be temporarily <br /> stored in DOT-approved 55-gallon drums pending transport by the disposal contractor to an <br /> appropriate disposal or treatment facility. <br /> 11.5ACRFPIICOMMONIrancfpl\Projects\Projects1911100511001021WorkPlan doc <br /> B - 2 <br />