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TABLE 4 <br /> ANALYTICAL RESULTS: GROUND WATER <br /> Village West Marina-Stockton,San Joaquin County <br /> Results reported in ug1E <br /> Momtaring <br /> ejl]Yuher SampItng Date TRPN PH g $enzene TOluerke >thyl Xy]enes <br /> yr Sample. . . <br /> lerszezae': <br /> MW-4 06/20/94 ND ND ND ND ND ND <br /> 09/19/94 ND ND ND ND ND ND <br /> - 12/15/94 ND ND ND ND ND ND <br /> 07/07/95 NA ND ND ND ND ND <br /> 10/18/95 NA ND ND ND ND ND <br /> MW-5 06/20/94 ND ND ND ND ND ND <br /> 09/19/94 ND ND ND ND ND ND <br /> 12/15/94 ND ND ND ND ND ND <br /> 07/07/95 NA ND ND ND ND ND <br /> 10/18/95 NA ND ND ND ND ND <br /> MW-6 06/20/94 ND 3700 200 44 41 150 <br /> 09/19/94 ND 2000 100 ND 90 125 <br /> �.z>1 12/15/94 ND 3470 96 7 21 147 <br /> 07/07/95 NA 1250 199 10 76 77 <br /> 10/18/95 NA 900 90 20 40 130 <br /> MW-7 07/07/95 ND ND ND ND ND ND <br /> 10/18/95 NA ND ND ND ND ND <br /> MW-8 07/07/95 ND ND ND ND ND ND <br /> 10/18/95 NA ND 0.4 ND ND 0.6 <br /> Slough SW-A 01/13/95 ND ND ND ND ND ND <br /> f='7 Laboratory 06/20/94 50 50 0.3 0.3 0.3 0.3 <br /> Reporting Limit 09/19/94 50 1 3 3 3 3 <br /> 12/15/94 50 50 0.3 0.3 0.3 0.3 <br /> 01/13/95 50 50 0.3 0.3 0.3 0.3 <br /> -1 07/17/95 50 50 0.3 0.3 0.3 0.3 <br /> 10/24/95 NA 50 0.3 0.3 0.3 0.3 <br /> ND: Not detected above the laboratory reporting limit <br /> - NA: Not analyzed <br /> { MCLs in ugll:benzene=l;toluene=150;ethylbenzene=700;total xylenes—1750 <br /> Taste&Odor Thresholds in ggle: toluene=42;ethylbenzene=29;xylenes=17 <br /> SUNMARY AND COMMENTS <br /> On October 18, 1995, the average depth to the water table underlying the project area was 15.63 <br /> 1 feet. Using the three-point method, the calculated local direction of ground-water flow on that <br /> date was approximately S87°E, a shift of 16° to the south since July 7 when the calculated now <br /> direction was N77°E. Overall, the flow direction has remained easterly. The gradient has <br /> steepened slightly from 0.009 foot/foot to 0.014 foot/foot between July 7 and October 18. <br /> Ground-water samples collected from the five wells were received at Sherwood Labs on October <br /> 19, 1995. The analytical results revealed continuing nondetectable concentrations of TRH-g and <br /> : j <br /> W.W.Irwin,Inc. <br /> Project No. 330!6.06 <br /> - October 1995 11 <br /> •1 <br />