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GROUNDWATER TECHNOLOGY lr''C <br /> STANDARD OPERATING PROCEDURE NO 10 <br /> SAMPLING FOR VOLATILES IN WATER (DISSOLVED GASOLINE, SOLVENTS ETC ) <br /> Use only vials properly .fasned and oven dried (preoareo by the laboratory) <br /> 2 Use clean sampling equipment Scrub wetn Alconox or equivalent laboratory detergent <br /> and water followed by a thorough water rinse Complete with a distilled water rinse <br /> Sampling equipment which has come Into contact with liquid hydrocarbons {free <br /> product) should be regarded with suspicion Such equipment should have tubing and <br /> cables replaced and all resilient parts washed with laboratory detergent solution as <br /> Indicated above. Visible deposits may have to be removed with hexane Solvent <br /> washing should be followed by detergent washing, as indicated above <br /> This procedure Is valid for volatile organic analyses only For extractable organics (for <br /> example, pesticides or base neutrals for U S Environmental Protection Agency (EPA) <br /> Method 625 a final rinse with pesticide-grade Isopropyl alcohol), followed by overnight <br /> or oven drying well be necessary <br /> 3. Take duplicate samples Mark on forms as a single sample with two containers to avoid <br /> duplication of analyses ., <br /> 4 Take a site blank using distilled water or known uncontaminated source This sample <br /> will be run at the discretion of the project manager <br /> 5 Fill out labels and_forms_as_much_as_posslble�ahead-ofi time --Use=an=Indelible marker. <br /> 6. ' Preservativgs are required for some types of samples Use specially prepared vials <br /> marked as indicated below, or use the appropriate field procedure (SOP 12 for <br /> acidification). Make note on forms that samples were preserved. Always have extra <br /> vials In case of problems. Samples for volatile analyses should be acidified below pH 2. <br /> Eye protection, foot protection, and disposable vinyl gloves are required for handling. <br /> Samples designated for expedited service and analyzed within seven (7) days of <br /> sampling will be acceptable without preservation Glasses or goggles (not contact <br /> lenses) are necessary for protection of the eyes. Flush eyes with water for 15 minutes <br /> If contact occurs and seek medical attention Rinse off hands frequently with water <br /> during handling <br /> CONCOFLO SOP 121941 Pea*1 sf 2 <br /> `Jr � GROUNDWATER <br /> , <br /> s] I TECHNOLOGY. INC. <br />