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®If3JUM�25 '96 �11=25AM�SMITH�ENVIRONMENTRL TECH CORP~� P.14 <br /> u� <br /> Son Cis Sampling— PR stein Operation <br /> Y <br /> . Ssurrtpling . <br /> 1, Gontpect the outer end of the tubing to the Silicone <br /> Tubing adapter and vacuum hose tar other Sampling <br /> appaotus). ' <br /> Z. kliow the appropriate sampling procedure for collecting <br /> a soil gas!ample'(f igu f e 1). <br /> Rim,oval mm <br /> I- Myer Collecting a sample.disconnect the tubing from the <br /> VACUUM hose or sampling system. • <br /> F. Pull up`rmly on the tubing until it releases from the ; <br /> adapl$r'at this botk n of the hole. (Taped tvWrig requires <br /> a,stron,ger pull.) <br /> 3. Rernowe the tubing from the probe rvd9. Dispose of a <br /> polyeO%yleAe tubing or decontaminate Teflon tufting os <br /> protocol dictates. <br /> 4. Retrieve the probe rods from the ground and recover the <br /> expendable paint hoiderwith the attached PRT,aditptett ftute t, raking a soil gas <br /> sample for direct Iftled1W roes a <br /> $: tnrpect the l -rind at r}u�lease of the PRT aClapt�r to ve+IfY GC with zhe PRT sy;mm. <br /> that proper sealing was achieved during sampling. The <br /> 9-ring should be cpmpremed. This seal can be tested by <br /> tapping the open mad of the point holder applying <br /> vacuum to the PtiT&&pw. <br /> S. Prepare for the next sample. <br />