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t:• � .F qtr •; .r. g � -.x:�� ,,� r-� ,y "3;.-n-f,.. ... ��.� ,',',,��- <br /> -r'pPo.c-3. �� :;w•} ; -C}'-. '�k. r�[.� � � W -r rx 1•1 _ - {v i _ gn <br /> .,, GT MmiRommENTAL LABORATORY (GTEL) <br /> STANDARD OPERATING PROCEDURE <br /> CONCFRNxNG SAMPLING FOR VOLATILE IN WATER (DISSOLVED GASOLINE, <br /> I SOLVENTS, ETC.) . __....___ <br /> SOP 10 <br /> f 1. Use only vials proYnrly washed and baked, available from <br /> GTEL or !-Chem. <br /> 2. Use clean sampling equipment. Scrub with Alconox or <br /> equivalent laboratory dAtergent and water followed by a <br /> thorough water rinse. Complete with a distilled water <br /> � ri�sse. <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 525) a final rinse with <br /> pesticide grade isopropyl alcohol, followed by overnight or <br /> s <br /> oven drying, will be necessary. <br /> 3. Fake 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 /> F hated source. This sample will be run at the discretion of <br /> the project manager. <br /> T 5. Fill out labels and forms as much as possible ahead of <br /> time. Use an indelible marker. <br /> — (',kill'\IiStiaiF:H <br /> Tt::� 11,06 1�ti <br />