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1 Mr Michael Infurna <br /> July 14, 2005 <br /> ' Page 3 <br />' Table 1 Well Construction Details <br /> Borehole Total Well Total Screen Interval Casing <br />' Depth Depth (0 020 slotted, Diameter <br /> Well ID ft b s ft b s ft b s Sch 40 PVC <br /> VEW-1 100 100 20-100 6-inch <br /> VEW-2 60 60 20-60 3-inch <br /> The location of VEW-1 is in the center of the hydrocarbon impacts, at the <br />' southern end of the former 4,000 gallon gasoline underground storage tank (UST) <br /> as shown on Figure 2 Well VEW-1 will be installed below the groundwater <br /> surface and extend to the top of a thick clay layer at approximately 100 ft bgs <br />' This well construction will allow future use as both a groundwater extraction well <br /> as well as a soil vapor extraction well <br />' The location of VEW-2 is located to be on the edge of the hydrocarbon impacts in <br /> soil as determined by the location of soil boring 137,which contained elevated <br /> concentrations of hydrocarbons <br /> Phase II <br /> An SVE pilot test will be conducted on VEW-1 The vacuum pressure in VEW-2, <br />' which will be located approximately 20 ft southeast of VEW-1, will be used to <br /> determine the radius of influence of VEW-1 The vacuum in the well, recorded in <br /> inches of mercury (in Hg),will be recorded throughout the pilot test <br />' An AS pilot test will be conducted on MWA A pipe with 2 ft of well screen will <br /> be placed in the monitoring well approximately 10 ft below the water level The <br /> pipe will be attached to an air compressor and air will be infected into the water <br /> During the AS pilot test the pressure in well VEW-1 will be recorded along with <br /> dissolved oxygen <br /> 1 The results of these tests will be used to estimate the effectiveness of these <br /> technologies as well as model a capture zone The pilot test will consist of <br />' operating the SVE system independently for an eight-hour period, operating the <br /> AS system for an eight-hour period, and operating the combined system for 10 <br /> days followed by shut down of the system to determine rebound effects <br />' Groundwater samples will be collected prior to starting the test and following <br /> shutdown of the system from wells VEW-1 and MW-1 <br /> 1 <br /> J <br /> 13\29000\128253- 1&I 1 rucking SV].AWort.Plan u c doc <br />