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Mr Michael Infurna July 21,2006 Page 3 During the AS pilot test the applied pressure and flow rate into MW-1,and water level and dissolved oxygen readings from surrounding wells were recorded The AS pilot test was conducted for seven hours after allowing the subsurface conditions to return to equilibrium overnight following the SVE test Following the operation of the AS system, the SVE system was started and the combined AS/SVE system was operated from May 4, 2006 through May 16,2006 During the combined AS/SVE system test, the SVE vacuum, flow rate,and influent VOC concentrations were recorded, as well as the AS pressure, flow rate, and depth to groundwater, dissolved oxygen,and pressure in surrounding wells Total VOCs were monitored in the field using a photoionizanon detector (PID) Flow-rate data for the SVE system was collected using a pitot tube and a magnehehc differential pressure gauge The air flow rate for the AS system was regulated using a flow meter To evaluate the concentration of hydrocarbons within the soil vapor,vapor samples were collected in 3-titer Tedlar bags or summa canisters from a sample port located in the piping for the SVE influent These vapor samples were collected at the following frequencies • Immediately after startup of the SVE pilot test • Prior to shutdown of the SVE pilot test • On Day 6 of the combined AS/SVE pilot test • On Day 10 of the combined AS/SVE pilot test,prior to system shutdown The vapor samples were submitted for analysis of VOCs using EPA Method TO-15 to Air Toxics Inc , an EPA-certified analytical laboratory located in Folsom,California A chain-of-custody form was used to record possession of the samples from time of collection to arrival at the laboratory Chain-of-custody forms and vapor analytical results are included in Attachment C P\28000\126253-T&I 1ruclarig SVF\Documents\SVE Report aznwdoc