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Tracer Gas Passivated Stainless <br /> Input Port Steel Container <br /> Flow Vacuum Gauge <br /> Regulator <br /> Flow Meter Shroud <br /> In-Line <br /> Tracer Gas <br /> Detector <br /> Purge Port <br /> Tracer Gas Can ster <br /> ram_ <br /> 3-Way Valve r <br /> Flow Restrictor Tracer Gas Detector <br /> Vacuum Gauge <br /> Soil Gas Tubing Ground Surface <br /> Bentonite seal <br /> Soil Gas Probe <br /> Borehole <br /> Hydrated Bentonite Grout <br /> Sand <br /> =. Screen <br /> FROM ADVISORY,ACTIVE SOIL GAS INVESTIGATIONS(CALIFORNIA DEPARTMENT OF TOXIC SUBSTANCES CONTROL,JULY 2015), FIGURE C-2. <br /> Imahl <br /> ,.► CDIM ENGINEERING, INC. SOIL GAS SAMPLING TRAIN AND LEAK DETECTION FIGURE <br /> 45 POLK STREET,THIRD FLOOR <br /> .■ SAN FRANCISCO,CA 94102 2.2 <br /> WWW.CDIMENGINEERING.COM <br /> F ff G N E F re i e[ s PH: (415)498-0535 <br />