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a 03: 5 'P.CC OAKLAND 8810197TWP CON-2 The soil and ground-water sampling program will provide baseline chemical analysis data for samples of upper subsoils and ground water at the site. - A range of possible chemical contaminants will be analyzed including those chemicals which Indy Electronics indicates are or may be used in its manufacturing process at the site, as well as other chemicals which are judged to have a significant possibility of occurrence at the site based on local land use practice. The study will also establish the depth and hydraulic gradient of the ground-water table. Six (5) soil borings will be drilled at strategic locations on the site and then coverted to permanent ground-water monitoring wells. Each borehole will be drilled using hollow-stem auger to a depth of at least 10 feet below first ground-water encountered at each location, and soil samples will be taken at closely-spaced intervals for geologic identification of subsurface soil stratigraphy and for use in the chemical analysis program. Based upon the presently available information it is assumed that these boreholes will extend no deeper than 25 to 35 feet. However, if deeper drilling should be necessary based on the specific ground-water conditions encountered, then drilling would continue to greater depths. The approximate locations selected for these six permanent monitoring wells and the site-specific features which influenced these selections are shown In Figure 1. The locations include: MW-1: the south side of the main plant adjacent to the solder-dipping facility; MW-2: the south side of the main plant adjacent to the tin-plating facility; MW-3: adjacent to the south side of the waste chemical storage area; MW-4: vicinity of the acid waste/recovery system;