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fF <br /> ' GROUNDWATER TECHNOLOGY LABORATORY (GTI,) <br /> STANDARD OPERATING PROCEDURE <br /> CONCERNING SAMPLING FOR VOLATILES IN WATER (DISSOLVED <br /> SOLVENTS, ETC. ) , GASOLINE, <br /> SOP 10 <br /> 1. Use only vialsr <br /> p openly washed and baked, available from GTL <br /> or Pierce Chemical. <br /> 2. Use clean sampling equipment.ng a q pmen <br /> t. Scrub with Alconox or <br /> thorough water rinse. Complete with a distilled water <br /> equivalent laboratory detergent and water followed by a <br /> rinse. <br /> Sampling equipment which has come into contact with liquid <br /> F hydrocarbons (free <br /> # � � cion. Sueh equipmeapitosho Zdshavedtbereganded with suspi- <br /> r and all resilient cables replaced <br /> parts washed with laboratory <br /> n solution, as above. detergent <br /> Vi <br /> with hexane, breath methanol deposits may have to be removed <br /> }~ fumes. Solvent washing should <br /> be followed be detergent washing as above. <br /> hThis procedure is valid for volatile or ' <br /> ysis <br /> only. For extractable organics (for examples pesticides, .or , <br /> a base neutrals for EPA method 625) a final rinse with F <br /> pesticide grade isopropyl alcohol, followed by owit h <br /> oven drying, will be necessary. Overnight or <br /> - Take duplicate samples for GTL. single <br /> sample with two containers to avo'Mark on forms as a a <br /> ad � <br /> duplication of analysis <br /> 4• Take a site. blank using distilled water or known uriconta <br /> i � nated source. This s r m - <br /> ample will be run at the discretion, of <br /> the project manager. <br /> 5.. <br /> Fall;.out labels and forms as much as f <br /> Possible b e ahead <br /> time. Use an indelible. laundry marker Qoraa1Space pdnf <br /> � Q <br /> 1 <br /> s <br /> fw <br /> '-00 � <br /> GROUNDWATER <br /> DOW <br /> TECHNOLOGY,INC. <br /> CONSULTING GROUNDWATER GEOLOGISTS t <br /> S <br />