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I I 7 i 2.0 Scope of Work 1 The scope of work for the investigation was resented in IT's workplan dated January 21, 2002 p g P p az"Y ' which was approved for implementation by Caltrans (IT, 2001a) The following scope of work was conducted 1 Permitting and Mobilization 2 Preparation of Workplan and Health and Safety Plan (HSP) 3 Field Investigation 4 Laboratory Analyses 5 Investigation-Denved Waste Disposal 6 Site Investigation Report Preparation 2.1 Permitting and Mobilization A drilling permit was obtained from the San Joaquin County Environmental Health Department A standard Caltrans encroachment permit was obtained from the appropriate office prior to any work conducted at the site Underground Service Alert (USA) was notified of the subsurface investigation at least 48 hours prior to initiation of the investigation (USA Ticket No 42539) Martha Adams and Skye Hatten of IT and Saiyed Ali of Caltrans attended a pre-work site visit on January 22, 2002 Items discussed and reviewed during the meeting included the scope of work, the site visit checklist, and the project schedule A field reconnaissance of the project area was also conducted and the proposed boring location was marked for USA identification ' 2.2 Preparation of Workplan and HSP P A workplan was prepared that included the project objectives, scope of work, groundwater boring and sampling procedures, analytical methods and schedule The workplan was reviewed and approved by Caltrans prior to the fieldwork A site-specific HSP (IT, 2001b) was prepared for the site in general accordance with 29 CFR 1910 120 and Title 8, California Code of Regulations, Section 5192 The HSP included safety procedures for work to be performed at the site, chemical hazard information, site safety officers, and a preferred medical emergency location Inb—bon redm kvy IISACRFPYICOMMONLgwDPLM2ivRnPJa1e3WW772ae dx 41"2 2'