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ar mmmmAL L&OM&TORY lam) <br /> CWCZ UNG SAPUILUG P= VOLATXLES IN RATER (DISSOLVED GASOLINE, <br /> 1 OLVENTfi, LTC.). <br /> cop 10 <br /> 1. Vg* O'nly vials properly washed snd baked, available from <br /> �L'ar I-Cham. <br /> 2. Woo Chan sasnpl incl equipment. Scrub with Alconox or <br /> equivalent laboratory detergent and, voter followed by a <br /> Uorough mater sines. Complete With a disatilled water <br /> minae. <br /> Sampling equipment which has come into contact with liquid <br /> ,hydrocarbons (free product) should be regarded With suspi- <br /> cion. Such equipment should have tubing and cables rnnlaced <br /> and all resilient parts washed with laboratory det­ - -nt <br /> solution, as above. Visible deposits may have to ,ve removed <br /> with hexane. Solvent washing should be followed be <br /> detergent washing as above. <br /> This procedure is valid for volatile organics: analysis, <br /> - only. For extractable organica (for example, pesticides, or <br /> baste neutrals; for EPA method 625) a final tinge with <br /> pesticide grade isopropyl alcohol, followed by overnight or <br /> oven drying, will be necessary. <br /> 3. Take duplicate samples for GTEL. Mark on forms as a single <br /> sample with two containers to avoid duplication of analysis. <br /> .i. Take a site blank using distilled wuter or known uncontani- <br /> nated source.. This sample will be ;run at the discretion of <br /> the project managar. <br /> 5. Fill out labels and !forms as much as possible ahead of <br /> time. <br /> Use an indelible marker. <br /> Tr,u.. ....., t.. <br />