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CAMBRIA <br /> Number of Borings Three well borings and six CPT borings were drilled during this <br /> investigation One of the borings (SB-17) could not be drilled <br /> due to the presence of underground utility lines in the vicinity of <br /> the proposed boring location We attempted to relocate the <br /> boring while staying within the constraints of the encroachment <br /> permit work area but could not find a suitable location to drill <br /> The well boring specifications are described in Table 1 and <br /> locations are shown on Figure 2 All three well borings were <br /> converted to groundwater monitoring wells <br /> Boring Depths Well borings 5-1-85, and 5-3-84 were drilled to 85 feet below <br /> grade(fbg) Well boring S-4-83 was drilled to 83 5 fbg All six <br /> CPT borings were drilled to 100 fbg <br /> Groundwater Depths During drilling activities groundwater was first encountered in <br /> the well borings at depths of approximately 55 to 65 fbg <br /> Soil Types Encountered Soil types encountered while drilling the well borings consisted <br /> primarily of clayey silt, sandy silt, silt, silty sand, sand, sandy <br /> gravel, and silty gravelly sand to the total explored depth of 85 <br /> fbg (Appendix B) Soil types encountered in the CPT borings <br /> are described on the CPT logs (Appendix B) <br /> Chemical Analyses Soil and groundwater samples from the well borings and CPT <br /> borings were analyzed for total petroleum hydrocarbons as <br /> gasoline (TPHg), benzene, toluene, ethylbenzene, and xylenes <br /> (BTEX), fuel oxygenates (methyl tertiary butyl ether [MTBE], <br /> tertiary butyl alcohol, di-isopropyl ether [DIPE], ethyl tertiary <br /> butyl ether, tertiary amyl methyl ether, methanol, and ethanol), <br /> and lead scavengers (1,2-dichloroethane [1,2-DCA], and <br /> 1,2-dibromoethane [EDB]) by EPA Method 8260B <br /> Groundwater samples from the pre-existing wells were analyzed <br /> for TPHg, BTEX,and MTBE by EPA Method 8260B <br /> Soil Disposal• Approximately 11 12 tons of soil was generated during field <br /> activities, stored onsite in a 20-yard soil bin The soil stockpile <br /> . was sampled and profiled for disposal (Appendix C) On <br /> 0 797 3 <br />