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3.0 SITE CHARACTERIZATION INVESTIGATION To achieve the current site characterization investigation objectives, the following scope of work was conducted 1 Permitting and Mobilization 2 Preparation of Workplan and Health and Safety Plan 3 Field Investigation 4 Laboratory Analysis 5 Investigation Derived Waste Disposal 6 Investigative Report Preparation 31 Permitting and Mobilization A drilling permit for soil borings and groundwater monitoring wells was procured from the PHSEHD (Appendix I) Underground Service Alert was notified of the subsurface investigation at least 48 hours prior to initiation of the investigation Appendix I contains copies of the PHSEHD drilling permits,City of Lodi permits, and related PHSEHD correspondence 3.2 Preparation of Workplan and Health and Safety.Plan � A workplan was prepared that included the project objectives, scope of work, soil and groundwater boring and sampling procedures,analytical methods,and schedule The work plan was submitted to PHSEHD on April 11,2003 A site specific Health and Safety Plan was prepared in accordance with 29 Code of Federal Regulations 1910 120 The Health and Safety Plan procedures for work to be performed at the site,chemical hazard information, site safety officers, and a preferred medical emergency location 3.3 Field Investigation The field drilling portion of the investigation was conducted during August and September, 2003 The workplan had been approved for the drilling and sampling of 3 soil borings and the drilling, sampling, and completion of 7 monitoring wells However, conditions encountered required the expansion of the soil boring phase of the investigation as directed by PHSEHD staff to a total of 8 exploratory soil borings, and three additional groundwater monitoring wells Details of the investigation are provided in the following sections 01 Mmn1D\Envwonmenta[Tamw'fexaw\Repods`SAR1203 wpd Page 12