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1 <br /> PET(an F,,LAP-certified laboratory)for analysis using appropriate chain-of-custody procedures <br /> The results of all current and previous groundwater soundings are surimarmed in Table 1 The average <br /> depth-to-water on September 14, 2000 was 11 5 feet below the top of the casing elevation of the <br /> ' three project monitoring wells At that time, the local direction of groundwater flow (utrlizuig <br /> elevation data from the monitoring wells) was calculated at approximately South 60 East along a <br /> gradient of 0 014 foot/foot (equivalent to 14 feet of dip per 1000 feet of horizontal distance) (see <br /> Figure 2) <br /> TABLE 1 <br />' HISTORICAL GROUNDWATER SOUNDING DATA <br /> Port of Stockton Former UST Site No 3 San Joaqwn Co <br /> un <br /> well Date Depth To Casing-Top Water Table Avg.Flow Direction <br /> Number Sounded Water t Elevation t Elevsathou &Gradient t!k't <br /> MW3-1 07/09/99 1110 935 -175 East Northeast <br /> @ 0 004 ft/ft <br />' 10/22/99 1140 -205 North 40°degrees west <br /> @ 0 024ft/ft <br /> 02/08/00 1099 -164 North 160 degrees east <br /> @ 0 008f/ft <br />' 05/17/00 1008 -073 East 220 degrees south <br /> @ 0 01211/ft <br /> 09/14/00 1175 -240 South 6°degrees east <br /> 0 014ft/ft <br /> MW3-2 07/09/99 1089 922 -167 <br /> 10/22/99 1180 -258 <br />' 02/08/00 1089 -167 <br /> 05/17/00 967 -045 <br /> 09/14/00 1146 -224 <br />' MW3-3 07/09/99 1039 874 -165 <br /> 10/22/99 1088 -214 <br /> 02/08/00 1023 -149 <br /> 05/17/04 929 -055 <br /> 09/14/00 1 11 29 -255 <br /> Well Sampling and Monitoring Logs are included as.Appendix B <br /> 1 <br /> Groundwater Sampling and Analyses <br /> Groundwater samples collected from the monitoring wells on September 14, 2000 and analyzed for <br /> TPHg by EPA Modified Method 8015, aromatics benzene, toluene, ethylbenzene, and total xylenes <br />' (BTEC constituents by EPA Method 8260 No gasoline as free product was observed in any well <br /> The results of all current and previous groundwater sampling analyses are summarized in Table 2 PET <br /> laboratory reports dated September 14,2000 and chain-of-custody are included as Appendix B <br />