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0 <br /> CAMBRIA <br /> Site Investigation Five CPT borings (SB-7 through SB-11) are proposed as shown on <br /> Figure 2 A Cambria geologist will supervise the drilling, and encountered soils will be logged <br /> continuously using electronic CPT technology Groundwater samples will be collected from <br /> these borings at 60, 72, 82, and 95 fbg, which are the same depths where groundwater samples <br /> were collected from boring SB-4 <br /> Soil samples will be collected from boring SB-8 at 10-foot intervals down to 80 fbg to assess <br /> the lateral extent of petroleum hydrocarbons in soil northwest of the northern fuel dispenser <br /> Soil sampling will be terminated at 80 fbg since this it the depth where non-impacted soil was <br /> encountered in boring SB-4 If field evidence suggests petroleum hydrocarbons are present at <br /> 80 fbg or deeper, the boring will be drilled deeper and additional soil sampling will be <br /> performed <br /> A Cambria geologist will supervise the drilling and describe encountered soils using the Unified <br /> Soil Classification System and Munsell Soil Color Charts Soil samples will be collected at <br /> 10-foot intervals for soil description, possible chemical analysis, and organic vapor screening <br /> with a photo-ionization detector (PID) <br /> • Soil samples will be retained in stainless steel or brass sample tubes and will be covered on <br /> both ends with Teflon sheets and plastic end caps Soil samples will be labeled, entered onto a <br /> chain-of-custody record and placed into a cooler with ice for transport to a State of <br /> California certified laboratory for analyses <br /> The scope of work described in this work plan will be performed under the supervision of a <br /> registered geologist <br /> Groundwater Sampling Groundwater samples will be collected from the CPT borings using <br /> CPT groundwater sampling equipment The groundwater samples will be placed in approved <br /> groundwater sample containers and submitted to a State of California certified laboratory for <br /> analyses <br /> Chemical Analyses Groundwater samples and selected soil samples will be analyzed for <br /> TPH9, benzene, toluene, ethylbenzene, and xylenes by EPA Method 8020 Groundwater <br /> samples and selected soil samples will also be analyzed for MTBE, ethanol, tertiary amyl <br /> methyl ether, ethyl tertiary butyl ether, tertiary butyl alcohol, di-isopropyl ether, <br /> 1,2-dichloroethane, and ethylene dibromide by EPA Method 8260 <br /> 0797 <br />