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Figures—Soil Gas Probe Emplacement Methods <br /> Figure 1 Perma ent/SemLpermanent Gas Figure 2—Multi-depth Gas Probe <br /> Probe Construction Diagram Construction Diagram <br /> Fill to theFill to the <br /> Hydrated surface <br /> surface granular <br /> bentonite <br /> Approx.1-ft in Dry Approx.1-ft in <br /> thickness granular thickness <br /> 4}* bentonite <br /> . . . . . . . . . . . . <br /> Approx.t-ft in Approx <br /> Probe tip thickness <br /> thickness <br /> : iii:':':. Sand '.'.'.'.:.:.;. <br /> pack . . . . . . . <br /> Temporary Gas <br /> Probe Method <br /> To Surface Fill to <br /> approx.1-ft <br /> Sample below sand <br /> tube pack <br /> Drive <br /> rod <br /> Vapor <br /> inlet <br /> Drive <br /> tip iiiiii <br /> • •y tirM1}+ Ain <br /> thickness s <br /> Approx.1-ft in <br /> thickness <br /> 01/28/2003 -24- <br />