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f f Mr. Michael Infurna <br /> iiivvv October 24, 2005 <br /> Page 4 <br /> Drilling Activities. BC will subcontract with a California-licensed well-drilling <br /> company to install the new extraction wells according to San Joaquin County <br /> protocols and California Well Standards. It is anticipated that the County <br /> inspectors will be present to observe and approve grouting. <br /> The boreholes for VEW-1 and VEW-2 will be advanced to a depth of 60 ft bgs, <br /> respectively. The total depth of the well will be determined in the field based <br /> upon the soil stratigraphy; however,it is anticipated that VEW-1 and VEW-2 will <br /> be completed to 60 ft bgs with 40 ft of 3-inch diameter screen. <br /> Soil samples will be collected in a split spoon sampler every 5 ft for lithology from <br /> the boring for VEW-2. Dry soil samples will be screened using a photoionization <br /> detector (PID) to determine the presence of any hydrocarbons. <br /> Sampling and Analytical Activities. Groundwater samples shall be collected <br /> from MW-1 prior to startup of the SVE and AS system and after completion of <br /> the pilot test. The samples will be prepared for shipment under proper chain-of- <br /> custody to a California-certified hazardous-materials laboratory for analysis. The <br /> groundwater samples will be analyzed for TPH-g, benzene, toluene, ethylbenzene, <br /> t and xylenes (BTEX), and fuel oxygenates using Environmental Protection Agency <br /> (EPA) Method 8260B under standard turn-around time schedule. This data will <br /> be reported using an electronic data delivery system compatible with the California <br /> Regional Water Quality Control Board (RWQCB) Database (GeoTracker) <br /> requirements. <br /> SVE System Installation. The SVE pilot test will be performed by installing a <br /> 4r catalytic oxidizer (cat-ox) soil vapor extraction blower and associated piping on <br /> Site. The cat-ox system will consist of a vapor/liquid separator, a blower, and a <br /> combustion chamber with catalyst. The cat-ox system will be trailer or skid <br /> #•3 mounted and will be transported to site as a complete unit. The water created <br /> from the vapor/liquid separator will be pumped into a 55-gallon drum for storage. <br /> AS System Installation. The AS pilot test will be performed by installing an air <br /> compressor and associated hoses on site. The air compressor will be used to <br /> provide air for a pipe in MW-1 that will release air into the groundwater. <br /> SVE and AS Pilot Test. The SVE and AS pilot tests will be completed as <br /> described in the air sparge and soil vapor extraction standard operating procedures <br /> provided in Appendix A. <br /> Health and Safety. All field work conducted will be done in compliance with the <br /> 1 Code of Federal Regulations (CFR) 1910.120. Appendix B presents the site <br /> specific health and safety plan for this site. <br /> P:\28000\128253-'i&T Trucking SVE\Work Plan sve 2.doc <br />