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Mr Michael J. Infurna Jr. P.G., S.R.E.H.S. February 14, 2006 Page 2 work plan with a site-specific Health and Safety Plan (HASP), a completed boring permit application, a completed Master File Record (MFR), permit and review fees, and a summary report. FIELD INVESTIGATION As required by the SJCEHD and compliant with Occupational Health and Safety Administration (OSHA) guidelines (29 CFR 1910.120) and with California Occupational Health and Safety Administration (Cal-OSHA) guidelines (CCR Title 8, Section 5192), SECOR prepared a site-specific HASP. SECOR completed the HASP with appropriate field personnel and site-specific safety information. Field staff reviewed the HASP before beginning field operations at the Site and had a copy of the HASP with them as they did the field work. Prior to the commencement of field activities, SECOR submitted to SJCEHD the required work plan, HASP, permit applications and forms, boring permit and MFR fees, and a proposed schedule. SJCEHD approved the work plan and issued boring permit SR # 0045181. A copy of the soil boring permit is included in Attachment 1. Also prior to field activities, the Site was marked for utility clearance and SECOR contacted Underground Service Alert (USA) to mark various agency sub-surface utilities (Reference Number 473230). On December 19, 2005, SECOR field staff mobilized to the Site to complete the scope of work. During advancement of the first soil boring, the impact sampler broke while staff attempted to collect the two-foot sample in the first boring. SJCEHD staff indicated that they would return the following day to observe the backfill of the hand-augered borings. On December 20, 2005, SECOR field staff remobilized to the Site and hand augered four soil borings (SB-1 through SB-4) at the locations shown on Figure 3. The locations of the borings were based on information from the PG&E yard manager (Mr. Mike Renwig) on the locations of the former con-vault and the locations of the former fill ends and fuel dispensing area. Borings SB-1 through SB-4 were hand augered to depths of approximately 3.3 to 3.5 feet below ground surface (bgs). The proposed depth of 5 feet bgs was not achieved in any of the borings due to refusal on what appeared to be a hard pan layer approximately 3.3 to 3.5 feet bgs beneath the former con-vault location. Borings SB-1A and SB-113 were step-out borings used to evaluate the refusal of the hand auger. Four discrete in-place soil samples (SB-1@2', SB-2@2', SB-3@2', and SB-4@2') were collected from the borings with a clean impact sampler at depths of two feet bgs. Deeper samples were not collected. The soil samples were collected with a decontaminated _ impact sampler in new brass sample sleeves and were field-screened for volatile organic compounds using a calibrated photo-ionization detector (PID). The samples sleeves were immediately covered with Teflon sheets and plastic end caps, labeled, recorded on a chain- I:\PG&E\report\Final Phase 11 report.doc