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CAMBRIA <br /> 120 feet below grade (fbg), or until drilling refusal is encountered In general, groundwater <br /> sampling depths will be determined in the field based on the soil types encountered We will <br /> target coarse-grained soil zones for groundwater sampling If no coarse-grained zones are <br /> encountered we will attempt to collect groundwater samples at 10-foot intervals <br /> Soil samples will be collected from CPT-5 at approximately 110 and 120 fbg Groundwater <br /> samples will be collected in coarse-grained soils found between 100 and 120 fbg <br /> Soil samples from CPT-6 will be collected at 10 fbg to rule out any offsite shallow source <br /> No additional soil samples will be collected from CPT-6 as the intent of this boring is to <br /> evaluate deep groundwater conditions And any impacted soil at depth is likely due to <br /> impacted groundwater moving through the soil Groundwater samples will be collected from <br /> CPT-6 at approximately 60, 75, 80, 92 fbg at a minimum Additional groundwater samples <br /> will be collected in coarse-grained soils found between 100 and 120 fbg <br /> Soil samples will be collected in boring CPT-7 at depths of 10, 50, 70, and 100 fbg <br /> Groundwater samples will be collected at approximately 60, 75, 80, 92 fbg at a minimum <br /> Additional groundwater samples will be collected in coarse-grained soils found between 100 <br /> and 120 fbg <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 as <br /> described above for soil description, possible chemical analysis, and organic vapor screening <br /> with a photo-ionization detector Soil samples will be retained in stainless steel or brass <br /> sample tubes and will be covered on both ends with Teflon sheets and plastic end caps Soil <br /> samples will be labeled, entered onto a chain-of custody record and placed into a cooler with <br /> ice for transport to a State of California certified laboratory for analyses <br /> I <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 /> • <br /> 1399 3 <br />