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MONITORING WELL SAMPLING DATA <br /> Project Name Stockton Yard Project Number S8100-06-62 <br /> ' Well No MW-12 Date 711196 <br /> Well Diameter 4 in Field Personnel IM/RS <br /> ' Casing Length 80 feet Screened Casing Length <br /> Well Elevation feet MSL measured from <br /> PURGE CHARACTERISTICS <br /> Water Depth Before Pumping 60 51 ft 2 in = 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 12 7 Gal Volumes Purged 3 <br /> ' Start Pumping Time 0849 End Pumping Time 0905 <br /> Total Time 16 min Flow Gauge 23610 to 23648 <br /> 1 Total Volume Pumped 38 Gal Avg Flow Rate 2 4 gpm <br /> Water Depth After Pumping 62 89 feet Time 0907 <br /> SAMPLING CHARACTERISTICS <br /> ' Sampling Method disposable bailer <br /> Laboratory Analysis TPHg, TPHd, BTEX, MTBE <br /> TIME TEMPERATURE CONDUCTIVITY pH Gallons <br /> (°F) I (uinhos/cm) Purged <br /> 0853 726 809 894 13 <br /> 0859 698 731 835 26 <br /> 0905 691 741 829 38 <br /> ' 0915 sample <br /> ' comments <br /> drawdown=2 3 8 <br /> %recovery=60 82= 87% <br />