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ii <br /> a <br /> GT ENVIROA7MENTAY. LABORATORY (GTEL) <br /> STANDARD OPERATING PROCEDURE <br /> i CONCERNING SAMPLING FOR VOLATILES IN WATER (DISSOLVED GASOLINE, <br /> SOLVENTS, ETC.). <br /> SOP 10 ° <br /> Use only vials <br /> GTFL or I-Chem. <br /> Properly washed and baked, available from <br /> a' <br /> h <br /> 2. Use Glean sampling equipment. <br /> equivalent laboratory detergent Scrub with Alco and water followed or a <br /> thorough water rinse. and <br /> with a distilled water <br /> E <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 rcplabed <br /> Ft and all resilient parts washed with laboratory detergent <br /> solution, above. Visible deposits may have to be removed 4 <br /> _ <br /> with hexane. Solvent washing should he follow <br /> detexgent washing as above. ed be <br /> This procedure is valid for volatile organics analysis <br /> only. For extractable or anics y <br /> base neutrals for EPA method 625}farf3nampleP pesticides, or <br /> pesticide grade iso xo rinse with <br /> w <br /> P PYl alcohol, followed by overnight or <br /> x oven drying, wyll be necessary. 3 <br /> 3. Take duplicate samples for GTEL. Mark on forms as a single <br /> sample with two containers to avoid duplication of analysis. <br /> r 4 <br /> 4. Take a site blank using distilled _ ! <br /> hated `source; ; <br /> This sample will hewrunratrtheod3scretionmof <br /> the project manager, <br /> 5. Fill out labels and for <br /> time, ms as much as possible ahead of <br /> Ilse an indelible marker. <br /> t <br /> Mai <br /> r <br />