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well purging. Measurements will be taken and recoided at approx- <br /> imately every five gallons. If anyof the three field parameters <br /> has not stabilized;by the time the 4-6 casing volumes has been <br /> M purged, additional well water will be pumped until the parameters <br /> have 'stabilized. (but-no more than 10 casing volumes) . "Stabs- <br /> ' - lized" is defined as a reading within 10 percent of a previous <br /> - reading. <br /> f. All purge water will be contained in 55-gallon drums that are <br /> labeled with well number, date, contents, and facility name. <br /> ! After the well has been purged of the required volume of water, <br /> the pump will be removed. A Teflon sampling bailer will be used <br /> f to collect .four separate . samples for presample field parameter <br /> measurements, to ensure parameter stability. <br /> B-6-4 Well Sampling <br /> s .. All samples will be collected with a <br /> Teflon bailer <br /> cleaned as <br /> `r . discussed in Section B.6. 1 . . The bailer will be operated by hand <br /> ' <br /> on, a new, 1/4-inch polypropylene rope. The sampling personnel <br /> will 'wear. clean latex surgical gloves during sampling operations <br /> and while: handling sample .bottles. <br /> F <br /> ' The collected groundwater samples will be emptied from the bailer <br /> with a' bottom-emptying device directly into the sample bottles. <br /> The ,samples will be .collected in two 40-ml glass VOA vials with <br /> c Teflon-lined septum caps. The sample bottles will contain hydro- <br /> chloric acid as a preservative, .unless the sample i to be used. <br /> to test for halogenated compounds, in which case the sample will <br /> - � `be unpreserved .- -The- samples samples will. be-contained-in- the- vials- free- - -r• - <br /> of: h.eadspace .(i.e. , no air bubbles` in the vial). <br /> The vials containing the samples will be labeled. with the well <br /> number, date, location, sampler's initials, and preservative in f <br /> indelible ink, and the sample labels will be. covered with clear <br /> t waterproof .tape: The vials will be placed in an iced cooler for L <br /> e42/71050/7-90/apb B=6 <br /> L-: <br />