Laserfiche WebLink
r <br /> GT ENVIROKKENTAL LM)ORATORX (GTEL) <br /> STANDARD OPE JMKG )PROCEDURE <br /> C4?-MKING sAmPLING FOR VOLATILES IN STATER (DISSOLVED GASOLINE, <br /> EOLMENTS, LTC.) . <br /> SOP Jill <br /> 1. Use only vials properly washed and bakid, available from <br /> GTEL or I-chem. <br /> 2. use clean sampling equipment. Scrub with Alconox or <br /> equivalent laboratory detergent and water followed by a <br /> thorough water rinse. Complete with a distilled water <br /> rinse. <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 replaced <br /> and all resilient parts washed with laboratory detergent <br /> solution., as above. Visible deposits may have to be 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 organics (for example, pesticides, or <br /> base neutrals for EPA method 625) a final rinse 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 /> ,.. 4. Take a site blank using distilled water or known uncantami- <br /> hated source. This sample will be run at the discretion of <br /> the project manager. <br /> �. 5. Fill out labels and forms as much as passible ahead of <br /> im <br /> time. Use an indelible marker. <br /> St:i N�uLu,1 Inc <br /> ova <br /> I�FfP�dR <br />