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Mr Michael Infurna <br /> July 14, 2005 <br /> Page 4 <br />' SCOPE OF WORK <br /> The scope of work for this site will be completed in accordance with Industry <br />' accepted standards and protocols, and BC Standard Operating Procedures <br /> provided in Appendix A (compact disk) <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 100 and <br /> 60 ft bgs, respectively The total depth of the well will be determined in the field <br /> based upon the soil stratigraphy, however, it is anticipated that VEW-1 will be <br /> completed to 100 ft bgs with 80 ft of 6-mch diameter screen, and VEW-2 will be <br />' 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 and newly installed VEW-1, prior to startup of the SVE and AS <br /> system and after completion of the pilot test The samples will be prepared for <br />' shipment under proper chain-of-custody to a California-certified hazardous- <br /> materials laboratory for analysis The groundwater samples will be analyzed for <br /> TPH-g, benzene, toluene, ethylbenzene, and xylenes (BTEX�, and fuel oxygenates <br />' using Environmental Protection Agency (EPA) Method 8260B under standard <br /> turn-around time schedule This data will be reported using an electronic data <br /> delivery system compatible with the California Regional Water Quality Control <br />' Board (RWQCB) Database (GeoTracker) requirements <br /> SVE System Installation. The SVE pilot test will be performed by installing a <br />' catalytic oxidizer (aat-ox) soil vapor extraction blower and associated piping on <br /> Site The cat-ox system will consist of a vapor/hquid separator, a blower, and a <br /> combustion chamber with catalyst The cat-ox system will be trailer or skid <br /> mounted and will be transported to site as a complete unit The water created <br /> from the vapor/hquid 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 which will release air into the groundwater <br />' P\28(1()0\128251- 1&1 1 rucking SVT\Wort.Plan SN e doc <br />