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U U <br /> LINE * FRICKE <br /> ENGINEERS,HYDROGEOLOGISTS&APPLIED SCIENTISTS <br /> FIELD METHODS <br /> A ground-water sample was collected from well 19-B on August 10, 1995. Prior to any <br /> sampling activity, depth to ground water was measured in the Well using an electronic water-'level <br /> probe. This well is an active domestic well; pumping and purging of the wells contents was not <br /> needed because there was no stagnant water in the well. A clean, disposable Teflon bailer was <br /> used to collect a ground-water sample from the well., Field parameters (temperature, pH, and <br /> conductivity) were measured during sampling for documentationpurposes. <br /> Samples to be analyzed for total petroleum hydrocarbons as gasoline,(TPHg'), and for benzene, <br /> toluene, ethylbenzene, and total xylenes (BTEX-) were decanted into 40-milliliter volatile organic <br /> analysis (VOA) vials preserved with Hydrochloric acid (HCl)., Samples to be analyzed for TPH <br /> as diesel (TPHd) were decanted into Miter amber bottles preserved with HCl, <br /> Ground-water samples were analyzed by American Environmental Network ("AEN-"), of Pleasant <br /> Hill, California, a state-certified laboratory. Samples were analyzed for TPHg using EPA <br /> Method 5030 GCFID', for TPHd using EPA Method 3510 GCFID, and for BTEX using EPA <br /> Method 8020. The laboratory data report and chain-of-custody form are presented in this <br /> appendix. <br /> 29%R".CL0:Ip1,bab <br />