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CAMBRIA <br /> the HSA borings are described on the exploratory boring logs <br /> presented in Appendix B, and the CPT log for CPT-1 is included <br /> in Appendix C Soil samples were collected at five-foot <br /> intervals in these borings for soil description, potential chemical <br /> analysis, and headspace analysis Soil samples from the HSA <br /> borings were screened for the presence of organic vapors using a <br /> photo-ionization detector (PID) The PID readings are recorded <br /> on the boring logs <br /> Groundwater Sampling Cambria collected a groundwater sample from boring CPT-2 <br /> using Hydropunch groundwater sampling equipment, exposing <br /> screen from 88 to 92 fbg Wells MW-5, MW-6, and MW-8 are <br /> sampled quarterly, and the results are submitted quarterly under <br /> tieparate cover <br /> Soil Analyses Selected soil samples were analyzed for TPHg by EPA Method <br /> 8015 Modified or EPA Method 8260B and benzene, toluene, <br /> • ethylbenzene, xylenes (BTEX), and MTBE by EPA Method <br /> 8020 or EPA Method 8260B <br /> Groundwater Analyses The groundwater sample from boring CPT-2 was analyzed for <br /> TPHg, BTEX, MTBE, tertiary butyl alcohol (TBA), di-isopropyl <br /> ether (DIPE), ethyl tertiary butyl ether (ETBE), tertiary amyl <br /> methyl ether (TAME), ethylene dibromide (EDB) and <br /> 1,2-dichloroethane (1,2-DCA), ethanol, and methanol by EPA <br /> Method 8260B <br /> Sediment Lithology Soil encountered while drilling consisted of alternating layers of <br /> silts (ML), silty sands (SM), and sands (SP) to the total explored <br /> depth of 100 06 fbg (Appendices B and C) <br /> Soil Disposal Approximately four tons of soil were generated during field <br /> activities, stored onsite, and covered with plastic sheeting The <br /> soil stockpile was sampled and profiled for disposal <br /> (Appendix D) On May 25, 2001, Manley and Sons Trucking <br /> Inc of Sacramento, California transported the soil to Allied <br /> 1346 4 <br />