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6. ..,.. Preservatives are required for some types of samples. Use <br /> Specially prepared vials from G1'L, marked As indicated <br /> below, or use the appropriate field procedure (50P 12 for <br /> acidification). Make note on forms that samples were <br /> Preserved. Always have extra vials in case of problems. <br /> For samples from dissolved gasoline sites or other samples <br /> shoudl be ied <br /> keepwthem11 2upright.ilfEye acid. <br /> Protection, and disposable vinyl Else <br /> Y protection, foot <br /> handling. Samples designated forexpeditedsere rvicedand <br /> r <br /> analyzed within seven (7) days of sampling will be accept- <br /> able without Preservation. <br /> Acid causes burns. Glasses oro <br /> necessary for protection of thegeges. (not contacts) are <br /> water for 15 minutes if contact occurs andWashseekswith medical <br /> handling- <br /> fresh <br /> attention. Rinse off hands frequently with water during <br /> For sampling chlorinated drinking water supplies for <br /> chlorinated volatiles, res samples shall be <br /> sodium thiosulfate. with <br /> Use vials labeled "preserved <br /> ONTAINSdTHYOSULFATE,,. <br /> No particular cautions are necessary. <br /> 7, : Fill vial to overflowing with wate3_, avoiding turbulence and <br /> bubbling as much as possible. Water should stand above lip <br /> of vial. <br /> 8. Carefully but quickly slipca <br /> the teflon disc from ca not by <br /> vial. Avoid dropping <br /> contact with vial, p y of inverting cap until in <br /> water, Disc should have teflon face toward the <br /> Also avoid touching white teflon face with dirty <br /> fingers. <br /> 9. Tighten cap securely, invert vial and tap against hand to <br /> see that there are no bubbles inside. <br /> 10. Label vial using indelible ink as follows: <br /> a) Sample I.D. No, (and "Groundwater Technolo <br /> not on preprinted label). gY" if <br /> b) Job I.D, No. <br /> c) Date and Time. <br /> d) Type of analysis requested. <br /> e) Your name. <br /> 3 <br /> âť‘GROUNDWATER <br /> _J <br /> TECHNOLOGY,INC. <br /> CONSULTING GNOf/NOWATEAGEoLOGISTS <br />