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Probe Rod <br />Tubing <br />PRT Adapter <br />0-Ring <br />PRT Expendable <br />Point Holder <br />0-Ring <br />Expendable <br />Drive Point <br />A cross section of probe rods driven to <br />depth and then retracted to allow for <br />soil gas sampling. The PRT adapter <br />and tubing are now fed through the <br />rods and rotated to form a vacuum- <br />tight connection at the point holder. <br />The result is a continuous run of <br />tubing from the sample level to the <br />surface. <br />WallaceKuhl <br />ASSOCIATES <br />TEMPORARY SOIL GAS SAMPLING PROBE (TYPICAL) <br />ELLIS SUBDIVISION <br />Tracy, California <br />FIGURE 4 <br />DRAWN BY RWO <br />CHECKED BY MAT <br />PROJECT MGR KMB <br />DATE 08/18 <br />WKA NO. 12002.03