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F lig YEM 1 � ' WOSS ASSOCL4IES Mr.John Randall 4 September 1, 1989 Prior to sampling,each sampled well was purged dry after evacuating 0.5 to 9 gallons of water with steam-cicaned PVC bailers, and sampled after water levels recovered to about 80 percent of initial static water levels. Each ground water sample was collected with a steam- cleaned Teflon bailer and decanted into a 40 ml glass volatile organic analysis vial(VOA)wit'i a Teflon septum, pscserved with sodium bisulfate, sealed within a plastic guard bottle and refrigerated for transport to Superior Analytical Laboratory,Inc,of San Francisco,California. The water sample collection records and chain of custody forms are included as Attachments A and B, respectively. A bailer blank and a travel blank were shipped with the ground water samples. 'file bailer blank was prepared by pouring distilled water into a steam-cleaned Teflon sampling bailer prior to sample collection. The water was then decanted from the bailer into a 40 ml VOA,preserved,refrigerated and transported tothe laboratory with the ground water samples. A trave? blank of certified organic-free distilled water, supplied by the laboratory, accompanied the samples to provide assurance that contamination was not introduced during sample bottle transport or sample storage. GROUND WATER GRADIENT Water levels for all monitoring wells were measured on June 27, 1989, Ground water elevations ars presented in Table 1,and ground water elevation contours are plotted on Figure 2. The ground water gradient shown on Figure 2 suggests northeasterly ground water flow. Monitoring wells MW-1, MW-3, MW-6 and MW-7 were dry so the ground water elevation in these wells was below the total depth of each respective well.