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I <br /> TABLE 5 <br /> SUMMARY OF GROUNDWATER SAMPLE ANALYSES <br /> (/um) <br /> Well No Date GW TPH as Benzene Toluene Ethyl Xylene <br /> Depth# Gas benzene y <br /> MW-1 3-17-93 6814 ND ND ND ND ND <br /> 6-28-93 6622 ND ND ND ND ND <br /> 10-18-93 67.51 ND ND ND ND ND <br /> 1-14-94 6518 ND ND ND ND ND <br /> 4-15-94 6325 ND ND ND ND ND <br /> MW-2 3-17-93 6722 ND 37 ND ND 11 <br /> I 6-28-93 6474 ND ND ND ND ND <br /> 10-18-93 6606 ND ND ND ND ND <br />' 1-14-94 6368 ND ND ND ND ND <br /> 4-15-94 6174 ND ND ND ND ND <br /> MW-3 3-17-93 6749 ND ND ND ND ND <br />' 6-28-93 6496 ND ND ND ND ND <br /> 10-18-93 6616 ND ND ND ND ND <br /> 1-14-94 63.94 ND 13 21 ND 11 <br /> 1-14-94* 6394 ND ND ND ND ND <br /> 4-15-94 6210 ND ND ND ND ND <br /> pfX= parts per bIIffion <br /> •Reanalyzed water sample,sample was reanalyzed after laboratory bolding tune has expired <br /> t Meastirements m feet <br />� October 1993 and January 1994, groundwater rose approximately 2 5 feet in all wells The <br /> gradient was calculated to be 0 00032 ft/ft, oriented due east <br /> Initially, benzene, toluene and xylenes were detected in MW-3 'These results were <br /> determined to be questionable by GeoAudrt and the sample (MW-3/1-14-94)was reanalyzed <br />' Upon reanalysis, no petroleum hydrocarbons were detected in the sample However, the <br /> sample was reanalyzed after the holding time has expired <br />' 3.4.4 Groundwater Sampling, April 1994 <br /> On April 15 1994, personnel from GeoAudit performed the final quarterly monitoring at the <br /> site Groundwater was highest in MW-2 and the flow direction was to the northwest The <br /> calculated gradient is 0 00042 ft/ft oriented N 570 W The flow direction has shown <br /> considerable past variations, shifting from south-southwest to northwest. No petroleum <br /> hydrocarbons were detected in any of the wells <br /> o.obpl A.&s.moix.t— <br /> ►Gd.a1awl6u4� <br />