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1.2 Scope of Work <br /> The planned future activities at the site includes the following tasks be <br /> performed: <br /> • Mobilization of all necessary personnel, equipment, and supplies to perform <br /> the work. <br /> • Prior to excavation, Underground Service Alert (USA) will be contacted to <br /> locate underground and overhead utility lines including sewer, water, and <br /> electrical, and phone that may exist in the areas where excavation will occur. <br /> • Overexcavation and soil screening to determine vertical and lateral extent of <br /> the soil contamination. <br /> • Collection of soil samples. <br /> 1.3 Overexcavation and Field Screening <br /> Overexcavation of the UST site will be accomplished using a wheeled backhoe. <br /> All excavated soil will be placed on visquine and stored in a separate <br /> contaminated soil stockpile. The sides and bottom of the hole will be excavated <br /> at one (1) foot intervals. The in-place soil at the sides and bottom of the <br /> excavation will be field screened. Field screening will consist of both visual <br /> inspection and field screening techniques. A photoionization detector (PID) will <br /> be used as a semi-quantitative field screening method. During excavation soils <br /> that have a strong organic or chemical odor, are visibly stained, or display a high <br /> organic vapor reading on the PID (greater than 10 ppm) will be considered <br /> contaminated. Soils with these characteristics are most likely to be <br /> contaminated with hydrocarbons. Overexcavation will continue at one-foot <br /> intervals until no suspected contamination is present. Final determination of <br /> contamination will be based on sample analysis. <br /> 2of3 <br />