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2 REMEDIAL ACTION PROCESS AND SYSTEM DESCRIPTION <br /> This section describes the proposed remedial strategy for this facility <br />' Proposed remedial activities address both hydrocarbon impacted <br /> groundwater and unsaturated soils <br /> 2.1 Process Criteria <br />' Information obtained during the site investigations and the pilot test has <br /> been used to propose remedial technologies for full scale site <br /> implementation Table 1 shows the process criteria proposed for the full <br /> scale system, based on-interpretation of pilot test results (Appendix A) <br /> Table 1 <br /> PROPOSED PROCESS CRITERIA <br /> i <br /> Process Treated Flow Rate Radius of <br /> Description Media Per Well Pressure Influence(ft) <br /> Air Sparging Groundwater 6 35 psig 30 <br /> Soil Venting Soil and Soil Vapor 25 55-in HZO vacuum 120 <br /> Vapor Treatment Soil Vapor 100(l) 5 psig NA <br /> (1) Total <br /> NA Not applicable <br /> 2.2 Process Description <br /> The proposed remedial system consists of air sparging, soil venting, and <br /> vapor process treatment The equipment in the remediation trailer used <br /> during the pilot test will be modified for use during full scale remediation <br /> Air will be injected at a depth of approximately 75 feet below ground <br /> surface (BGS) through air sparging wells Vacuum will be applied to the <br /> unsaturated zone through vent wells with 25 to 3 Q feet of screen in the <br /> vadose zone Some existing monitoring wells will also be used as soil <br /> venting wells Recovered vapors will be treated by carbon adsorption <br /> Drawing sheets showing the proposed remedial system are in Appendix B <br /> Final Remediation Plan <br /> Prepared for RAwBo BAKING COMPANY 3 Prepared by Burlington Environmental Inc <br /> E 112138211259971TESTEVAL DOC 212195 <br />