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�i 2.0 Objectives and Scope <br /> 2.1 Objectives <br /> This field effort, referred to as a supplemental soil investigation, is designed to achieve the <br /> following objective: <br /> • Further characterize the extent and nature of MGP and underground tank <br /> residues in identified source areas for the purpose of providing information <br /> needed to develop and evaluate potential remedial alternatives. <br /> 2.2 Scope of Work <br /> Data needed in the evaluation of potential treatment and disposal options are listed in <br /> Table 2-1. <br /> To satisfy the above objective, soil borings will be drilled using the Geoprobe System, soil <br /> and residue samples will be collected and analyzed, and visual observations will be noted. <br /> Three soil borings are planned near each of the four identified source areas (Figure 2-1). In <br /> addition, five soil borings will be drilled near locations where elevated levels of PNAs and <br /> petroleum hydrocarbons were previously detected and four borings will be drilled in formerly <br /> unsampled areas. Four samples will be collected from each boring for screening analysis in <br /> the field utilizing test kits. Additional borings may be drilled based on visual observations <br /> and field test kit results. Based on screening results, some samples will also be sent to the <br /> laboratory for focused analyses. Residue samples will be collected from source areas 2 and 3 <br /> for laboratory analysis. <br /> Soil investigation field activities will include the following: <br /> • Drilling of Soil Borings <br /> • Soil Sampling <br /> • Residue Sampling <br /> Field Analytical Measurements <br /> • Laboratory Analytical Measurements <br /> Drilling of Soil Borings: Twenty-one soil borings will be drilled to a depth of <br /> approximately 25 feet bgs using Geoprobe® equipment. A continuous acetate core will be <br /> obtained from each boring for the purpose of geologically logging each boring and for <br /> obtaining samples for analysis. A boring log will be developed for each boring noting <br /> occurrences of oily, tarry and discolored soils. Additional soil borings may be drilled if visual <br /> SF010030B82.DOC 2-1 <br />