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' MONITORING WELL SAMPLING DATA <br /> Project Name Stockton Yard Project Number S8100-06-62 <br /> ' Well No MW-12 Date 10/22/96 <br /> Well Diameter 4 in Field Personnel IMIRS <br /> Casing Length 80 feet Screened Casing Length <br /> Well Elevation feet MSL measured from <br /> I <br /> PURGE CHARACTERISTICS <br /> ' Water Depth Before Pumping 60 89 ft 2 in = 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 12 5 Gal Volumes Purged 3 <br /> Start Pumping Time 1 133 End Pumping Time 1143 <br /> ' Total Time 10 min Flow Gauge 27587 to 27625 <br /> Total Volume Pumped 38 Gal Avg Flow Rate 3 8 gpm <br /> Water Depth After Pumping 63 69 feet Time 1143 <br /> SAMPLING CHARACTERISTICS <br /> Sampling Method disposable bailer <br /> ' Laboratory Analysts TPHg, TPHd, BTEX, MTBE <br /> TIME TEMPERATURE CONDUCTIVITY pH Gallons <br /> (°C) (umhos/cm) Purged <br /> ' 1 136 202 934 68 13 <br /> 1139 202 968 68 26 <br /> ' 1143 203 969 68 38 <br /> ' 1150 sample <br /> ' comments <br /> drawdown=2 80 <br /> L/. recovery= 60 92=99% <br />