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l <br /> AVERAGED SOIL <br /> GAS CONCENTRATION <br /> NO VADOSE CONCENTRATIONS IN LEACHATE <br /> ZONE ACTION ARE GREATER THAN THE NO VADOSE <br /> GROUNDWATER STANDARD? NO ZONE ACTION <br /> 1 A,2A <br /> NO NO <br /> YES <br /> ARE <br /> CONCENTRATIONS IN <br /> A GROUNDWATER MIXING WILL VADOSE ZONE <br /> CELL GREATER GROUNDWATER CONTAMINATION <br /> THAN THE GROUNDWATER CONCENTRATIONS AT SIGNIFICANTLY <br /> STANDARD OR DOES THE THE SITE ARE GREATER EXTEND <br /> TEFA INDICATE THAT THAN THE GROUNDWATER <br /> VADOSE ZONE ACTION ANO GROUNDWATER YES---*- REMEDIATION OR <br /> SHOULD BE STANDARD? DOES THE TEFA <br /> IMPLEMENTED? INDICATE THATA <br /> VADOSE ZONE ACTION <br /> 1113, 113, IC BE TAKEN? <br /> 1A, 1B, IF,2A THROUGH 2F <br /> YES YES <br /> IMPLEMENT SVE <br /> FIGURE 2-6 <br /> CONCEPTUAL TEFA <br /> NOTE: THE BOLD TEXT REFERS TO SPECIFIC ELEMENTS DECISION LOGIC FOR <br /> OF THE PROCESS TO DETERMINE IF THE VADOSE SVE SYSTEM IMPLEMENTATION <br /> ZONE CLEANUP GOAL IS ACHIEVED(SEE SECTION 2.3.2). VOC FEASIBILITY STUDY <br /> McCLELLAN AIR FORCE BASE <br /> SACRAMENTO,CALIFORNIA <br /> VOCFS206.FH8(FREEHAND 8.0)12199 "H2MHILL <br />