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MONITORING WELL SAMPLING DATA <br /> Protect Name Stockton Yard Project Number 58100-06-62 <br /> Well No MW- 7 Date 4-22-96 <br /> ' Well Diameter 4 in Field Personnel EWBL <br /> Castrig Length 756 feet Screened Casing Length <br /> ' Well Elevation feet MSL measured from <br /> ' PURGE CHARACTERISTICS <br /> Water Depth Before Pumping 60 74 ft 2 in = 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 9 7 Gal Volumes Purged 3 <br /> Start Pumping Time 1127 End Pumping Time 1149 <br /> ' Total Time 22 min Flow Gauge 22272 to 22302 <br /> ' Total Volume Pumped 30 Gal Avg Flow Rate 14 gpm <br /> Water Depth After Pumping 70 75:feet Time 1149 <br /> SAMPLING CHARACTERISTICS <br /> ' Sampling Method disposable baiter <br /> Laboratory Analysis TPHg, TPHd, BTEX, MTBE <br /> '1I TEMPERATURE CONDUCTNITY pH Gallons <br /> (°F) (umhos/cm) Purged <br /> 1130 760 1066 764 10 <br /> 1137 742 1031 749 20 <br /> 1149 744 1052 749 30 <br /> 1205 sample <br /> comments <br /> drawdown= 10 01 <br /> ' % recovery=62 66 ft=80% <br />