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tb c4 r <br /> .CAMBRIA <br /> these tests were somewhat anomalous The pore pressure never <br /> stabilized in one test, so depth to water could not be determined <br /> Another test yielded a very shallow depth to water and was <br /> considered anomalous The other two tests yielded results <br /> suggesting groundwater is between 36 5 to 44 fbg These results <br /> are more reasonable based on information from SJCPHS/EHD <br /> staff regarding depth to groundwater in the area <br /> The moisture content of soil samples collected from boring SB-1 <br /> was also evaluated to determine the depth of first groundwater <br /> Groundwater was not observed in the soil samples until we <br /> reached the depth of 60 fbg Based on this data and the pore <br /> pressure dissipation tests it is not clear at what depth first <br /> groundwater occurs beneath the site However, our groundwater <br /> samples were collected at a depth of 67 fbg, so it is safe to say <br /> that first groundwater occurs at 67 fbg or shallower <br /> • Soil Types Soil types encountered in the borings were predominantly fine- <br /> grained soils (clay, silty clay, silt, clayey silt, sandy silt) with <br /> lesser amounts of course-grained soil (sand, silty sand, and <br /> gravelly sand The course-grained soil were found in SB-2 from <br /> two fbg to 10 fbg (this is probably fill material) and in SB-3 at <br /> 69 to 70 fbg Another soil type encountered was "stiff fine- <br /> grained" which is a CPT electronic logging category that does <br /> not translate directly the Unified Soil Classification System <br /> Chemical Analyses Groundwater and soil samples were analyzed for TPHg, BTEX, <br /> fuel oxygenates (including ethanol and methanol) and lead <br /> scavengers (1,2-dichloroethane [1,2-DCA], and ethylene <br /> dibromide [EDB]) One exception to this was the soil samples <br /> from boring SB-2 were inadvertently not analyzed for methanol <br /> and ethanol <br /> HYDROCARBON DISTRIBUTION IN SOIL <br /> Soil samples were collected from boring SB-1 at 10 5, 215, 30 5, 40 5, 50 5, and 70 fbg to assess <br /> . the vertical extent of gasoline constituents in the soil TPHg was detected in the 10 5, 215, and <br /> 1511 3 <br /> j � <br />