Laserfiche WebLink
GT ENVIRONMENTAL LABORATORY (GTEL) <br /> STANDARD OPERATING PROCEDURE , <br /> CONCERNING SAMPLING FOR ,VOLATILES IN WATER (DISSOLVED GASOLINE; <br /> SOLVENTS, ETC. ) . R' <br /> SOP 10 <br /> 1 . Use only vials properly washed and baked, 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 ha's 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 laboratory1detergent .e <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 uncontami�- . <br /> nated source. This sample will be run at the discretion of <br /> the project manager. <br /> 5 . Fill out labels and forms as much as possible ahead of <br /> time. Use an indelible marker. <br /> • i K� <br /> ;F <br /> i <br />