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1 <br /> and sampling form included in Appendix A The wells were allowed to recharge to at least 80% of <br /> their respective static water levels prior to sample collection The approximately 145 gallons of <br />' purged water was taken to Riverbank Oil Transfer under Uniform Hazardous Waste Manifest <br /> number 21150602 by American Valley Waste Oil, Inc A copy of the signed bill of lading is <br /> included in Appendix C <br />' The samples were recovered using clean, disposable bailers, and were then transferred unto 40-m1 <br /> VOA vials All samples were labeled, placed in an ice chest, chilled with ice to 41, C, and <br /> transported to Precision Enviro-tech Analytical Laboratory (an ELAP-certified laboratory in <br /> Stockton, California) for analysis using appropriate chain-of-custody procedures <br /> The results of all current and previous groundwater gaugings are sumrnanzed in Table 1 The <br /> average depth-to-water on November 19, 2001 was 12 67 feet below the top of the casing <br /> elevation of the three project monitoring wells At that time, the local direction of groundwater <br />' flow (utilizing elevation data from the monitoring wells) was calculated at approximately West <br /> 46 7° S along a gradient of 0 0051 foot/foot (equivalent to 5 1 feet of dip per 1000 feet of <br /> thorizontal distance) (see Figure 2) <br /> TABLE 1 <br /> HISTORICAL GROUNDWATER SOUNDING DATA <br />' Port of Stockton Former UST Site No 3, San Joaquin County <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 Casco <br /> M W 3-1 07/09/99 11 10 935 -1 75 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 16°degrees east <br /> ' @ 0 008ft/ft <br /> 05/17/00 1008 -073 East 22°degrees south <br /> @ 0 012ft/ft <br />' 09/14/00 1175 -240 South 6°degrees east <br /> @0 014f1/ft <br /> 02/14/01 1129 -194 South 22'degrees west <br /> ' @0 035ft/ft <br /> 5/17/01 1077 -142 North 17 3°degrees <br /> west @ 0 0028 ft/ft <br /> ' 08/22/01 1255 -320 West 32°degrees south <br /> @ 0 0044 ft/ft <br /> 11/19/01 1286 -351 West 46 7°degrees <br /> south P,0 0051 ft/ft <br /> 1 <br /> usr 11113 gtr9 doe 5 <br />