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C A M B R 8 A Mr Michael Infurna • June 22, 2005 Site Safety Plan Cambria will prepare a site safety plan for field work Utility Clearance Cambria will mark proposed drilling location, and the location will be cleared through Underground Service Alert pnor to drilling Site Investigation One exploratory soil boring (CPT-8) is proposed at the location shown on Figure 2 This boring will be advanced using a CPT rig Note that this boring was originally proposed as a hollow-stem auger boring named SB-6 While the name and drilling method have been changed, the location remains the same as previously proposed Boring CPT-8 will be located downgradient of the former waste oil UST and will be advanced to approximately 50 fbg to log soil types Cambria will collect a water sample at first-encountered groundwater and will target coarse-grained zones for deeper groundwater sampling Based on boring logs for SB-2 and CPT-6, we anticipate collecting deeper water samples at approximately 35 and 45 fbg A Cambria geologist will supervise the drilling, and soil lithology will be logged continuously using electronic CPT technology Groundwater samples will be collected with CPT sampling equipment and transferred into plastic bottles containing mine acid preservative (for metals analyses) and into glass amber bottles with no preservative (for polychlorinated biphenyls [PCBs], naphthalene, and creosote) Cambria will field-filter the samples for dissolved metals • analyses prior to transferring them into the preserved plastic bottles Groundwater samples will be labeled, entered onto a chain-of-custody record, and placed into a cooler with ice for transport to a State of California certified laboratory for analyses No soil samples will be retained for chemical analyses as this area has been adequately characterized by previous soil borings Chemical Analyses Groundwater samples from the boring will be analyzed for dissolved metals (cadmium, chromium, lead, nickel, and zinc) by EPA Method 6010B, for PCBs by EPA Method 8082, and for naphthalene and creosote by EPA Method 8270C Report Preparation Following receipt of laboratory analytical results, Cambria will prepare a written report which will include field procedures, analytical results, a boring log, and conclusions Cambria will perform the scope of work described in this work plan under the supervision of a professional geologist or engineer SCHEDULE . Cambria will begin work upon written approval of this work plan by SJCEHD and receipt of an appropriate drilling permit 4