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f s, <br /> n Y <br /> VA-0011 <br /> i I <br /> Problem Assessment Report December 5, 1989 <br /> USA Petroleum Station No. 65, Lodi, California AGS 87050-3 <br /> TABLE 8 <br /> GROUND-WATER ELEVATION DIFFERENCES <br /> IN MONITORING WELLS <br /> USA Station No. 65 <br /> 2500 West Lodi Avenue <br /> Lodi, California <br /> (Page 2 of 2) <br /> Monitoring Static Ground-water <br /> Well Top of Water Elevation <br /> Number Date Casing Level Below Sea Level <br /> j <br /> KW-7 03/31/89 37.88 43.95 6.07 <br /> 04/18/89 37.88 44 .02 6.14 <br /> gt S-1 04/18/89 37.56 42.87 5.23 <br /> , <br /> # S-2 04/18/89 37.76 43.17 5.41 <br /> Measurements in feet <br /> Static water level measured in feet belowtop of casing <br /> t Datum is sea level <br /> _ z <br /> l Evaluation of Aquifer Parameters <br /> Vic,, ! <br /> ° 1 <br /> f <br /> On March 31, 1989, we performed bailer tests in monitoring wells MW-1 through 1♦{1V-6 <br /> to obtain a preliminary estimate of the transmissivity and hydraulic conductivity of the <br /> w.►ier-bearing zone penetrated by the wells. Tl�e method of Skibiztke (1958) was used <br /> . during the tests. Approximately 5 gallons of water were bailed from each well, and the <br /> resulting drawdown and recovery limes were monitored by our field geologist. T}ie data <br /> t <br /> obtained from.each well are summarized in Tables 9 through 14, and indicate that the <br /> residual drawdown in the wells after bailing ranged.from 0.01 foot to 0.04 foot. Tile <br /> W <br /> s 32 <br /> F .. .. <br />