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CANIBRIA <br /> fractional organic carbon content These results will be <br /> submitted under separate cover <br /> Groundwater Analyses Groundwater samples were analyzed for TPHg, BTEX, <br /> MTBE, tertiary amyl methyl ether (TAME), tertiary butyl <br /> alcohol (TBA), di-isopropyl ether (D1PE), ethyl tertiary butyl <br /> ether (ETBE), MTBE, and 1,2-dibromoethane (EDB) and <br /> 1,2-dicholorehtane (1,2-DCA) by EPA Method 8260B <br /> Soil and Water Disposal One drum of soil cuttings and five drums of rinsate water were <br /> generated during field activities and temporarily stored onsite <br /> The soil was sampled and profiled for disposal On May 2, <br /> 2000, Phillip Services, Inc of Benicia, California transported <br /> the drums to Crosby and Overton's Long Beach, California <br /> facility for treatment and disposal <br /> Groundwater Flow Direction Cambria evaluated historical water-level measurement data <br /> and prepared a rose diagram (Figure 3) Groundwater flow is <br /> primarily to the northeast and east The rose diagram <br /> represents our approximation of the local regional <br /> groundwater flow direction based on available data from 1996 <br /> through the first quarter of 2000 Onsite groundwater flow <br /> direction is consistently a radial pattern, away from a mound <br /> with well MW-2 at the center of the mound This radial flow <br /> pattern could not be depicted on the rose diagram Therefore, <br /> we used the outlying wells at this site to determine <br /> groundwater flow direction for each monitoring event, and <br /> thus created the rose diagram <br /> HYDROCARBON DISTRIBUTION IN SOIL <br /> TPHg was detected in soil from borings CPT-1, CPT-3, and CPT-4 at concentrations ranging <br /> from 1 28 to 356 parts per million (ppm) The highest concentration was detected at 73 fbg <br /> in boring CPT-4 Benzene was detected in soil from all of the borings at concentrations <br /> ranging from 0 00564 to 0 219 ppm MTBE was not reported by EPA Method 8020 in soil <br /> from any of the borings Soil chemical analytical data are summarized in Table 2 and <br /> presented on Figure 4 Laboratory analytical data are presented in Appendix C <br /> 0778 4 <br />