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I� r- <br /> Mr. Michael Infurna <br /> October 24, 2005 <br /> Page 2 <br /> I + <br /> In air sparging, pressurized air is injected into the saturated water-bearing zone of <br /> an aquifer. Air sparging as a site remediation technology serves to volatilize <br /> contaminants from the liquid to vapor phase, and provide oxygen (0� for biologic <br /> activity and microorganism growth. The purpose of this pilot test is to determine <br /> the ROI for AS and the concentration of O2 in groundwater in surrounding wells. <br /> PHASE I <br /> E The purpose of the new extraction well VEW-1 will be to extract petroleum <br /> E hydrocarbons from the soil and groundwater in the source area of the <br /> hj { groundwater plume, thereby reducing constituent mass. The purpose of the new <br /> �� extraction well VEW-2 will be to determine the ROI from VEW-1. The results <br /> will be used in the design of an interim remediation measure, as part of a final <br /> L remediation plan. <br /> To accomplish these objectives, the following tasks will be completed: <br /> I, <br /> • advance an 8-inch diameter hollow stem auger boring for VEW-1 to a depth <br /> f� of approximately 60 feet (ft) below ground surface {bgs), approximately <br /> 1 10 ft east of MW-1 as shown on Figure 2; <br /> • advance an 8-inch diameter hollow stem auger boring for VEW-2 to a depth <br /> of 60 ft bgs,approximately 20 ft southeast of VEW-1 as shown on <br /> Figure 2; <br /> place a 3-inch diameter schedule 40 polyvinyl chloride (PVC) casing with <br /> 0.020-inch slot screen in each borehole with construction details as shown in <br /> Table 1; <br /> * place cuttings into Department of Transportation (DOT) approved 55-gallon <br /> drums or a lined roll-off container, <br /> • survey the well locations using a licensed land surveyor; and <br /> • characterize and coordinate disposal of investigation derived waste. <br /> E <br /> G <br /> P:\28000\128253-T&T Trucking SVE\Work Plan sve 2.doc <br />