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MONITORING WELL SAMPLING DATA <br /> Project Name Stockton Yard Project Number S8100-06-62 <br /> 1 Well No MW-9 Date 10/22/96 <br /> Well Diameter 4 in Field Personnel IM/RS <br /> ' Casing Length 79 feet Screened Casing Length <br /> Well Elevation feet MSL measured from <br /> PURGE CHARACTERISTICS <br /> Water Depth Before Pumping 59 18 ft 2 in = 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 12 9 Gal Volumes Purged 3 <br /> ' Start Pumping Time 1005 End Pumping Time 1013 <br /> Total Time 8 min Flow Gauge 27488 to 27527 <br /> ' Total Volume Pumped 39 Gal Avg Flow Rate 4 9 gpm <br /> Water Depth After Pumping 6434 feet Time 1013 <br /> SAMPLING CHARACTERISTICS <br /> ' Sampling Method disposable bailer <br /> Laboratory Analysis TPHg, TPHd,BTEX, MTBE <br /> TIME TEMPERATURE CONDUCTIVITY pH Gallons <br /> (°C) (umhos/cm) Purged <br /> ' 1007 193 938 68 13 <br /> 1010 195 852 68 26 <br /> 1013 194 943 68 39 <br /> 1020 sample <br /> ' comments <br /> 1 drawdown— 5 16 <br /> recovery= 60 15 81 % <br />