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The wells were allowed to recharge to at least 80% of their respective static water levels prior to <br /> sample collection The approximately 110 gallons of purged water was taken to Industrial Service <br /> Oil Co , Inc under bill-of-lading number 20958604 A copy of the bill-of-lading is included in <br /> Appendix C <br /> The samples were collected using clean, disposable bailers, and were then transferred into 40-m1 <br /> VOA vials All samples were labeled, placed in an ice chest, chilled with ice to 4° C, and <br /> transported to Precision Enviro-Tech Analytical Laboratory (PET), an ELAP-certified laboratory in <br /> Stockton, California, for analysts using appropriate chain-of-custody procedures <br /> 1 The results of all current and previous groundwater soundings are summarized in Table 1 The <br /> average depth-to-water on May 17, 2001 was 10 53 feet below the top of the casing elevation of <br /> the three project monitoring wells At that time, the local direction of groundwater flow <br />' (utilizing elevation data from the monitoring wells) was calculated at approximately North 17 30 <br /> West along a gradient of 0 0028 foot/foot (equivalent to 2 8 feet of dip per 1000 feet of <br /> horizontal distance) (see Figure 2) <br /> TABLE I <br /> HISTORICAL GROUNDWATER SOUNDING DATA <br /> Port of Stockton Former UST Site No 3, San Joa uin Count <br /> Well Date Depth To Casing-Top Water Table Avg Flow Direction <br /> Number Sounded Water(Ft) Elevation(Ft) Elevation(Ft) &Gradient(Ft(Ft) <br /> From Casing <br /> MW3-1 07/09/99 11 10 935 -1 75 East Northeast <br /> @ 0 004 ft/ft <br /> 10/22/99 1140 -2 05 North 400 degrees west <br /> @ 0 024ft/ft <br /> 02/08/00 1099 -1 64 North 160 degrees east <br /> @ 0 008ft/ft <br />' 05/17/00 1008 -0 73 East 22*degrees south <br /> @ 0 012ft/ft <br /> 09/14/00 11 75 -240 South 6°degrees east <br /> @0 014ft/ft <br /> 02/14/01 1 1 29 -1 94 South 220 degrees west <br /> @0 035ft/ft <br /> 5/17/01 1077 -1 42 North 17 30 degrees <br /> west @ 0 0028 ftlft <br /> MW3-2 07/09/99 1089 922 -1 67 <br /> 10/22/99 11 80 -2 58 <br /> 02/08/00 1089 -1 67 <br /> 05/17/00 967 -045 <br />' <br /> 09/14/00 1146 -224 <br /> 02/14/01 11 12 -1 90 <br /> 5/17/01 1068 -1 46 <br /> MW3-3 07/09/99 1039 874 -165 <br /> 10/22/99 1088 -2 14 <br /> . 02/08/00 1023 -149 <br /> 05/17/00 929 -055 <br /> 1151 SIIC3 g1r7 doe 5 <br /> 1 <br />