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MONITORING WELL SAMPLING DATA <br /> Project Name Stockton Yard Project Number S8100-06-62 <br /> ' Well No MW-11 Date 4-22-96 <br /> Well Diameter 4 in Field Personnel IM/BL <br /> ' Casing Length 79 5 feet Screened Casing Length <br /> Well Elevation feet MSL measured from <br /> ' PURGE CHARACTERISTICS <br /> ' Water Depth Before Pumping 60 71 ft 2 in = 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 12 3 Gal Volumes Purged 3 <br /> ' Start Pumping Time 1318 End Pumping Time 1334 <br /> Total Time 16 nun Flow Gauge 22355 to 22392 <br /> ' Total Volume Pumped 37 Gal Avg Flow Rate 2 3 gpm <br /> Water Depth After Pumping 61 77 feet Time 1334 <br /> SAMPLING CHARACTIERISTICS <br /> Sampling Method disposable bailer <br /> Laboratory Analysis TPHg, TPHd, BTEX, MTBE <br /> T W TEMPERATURE CONDUCTIVITY pH Gallons <br /> °F (umhos/cm) Purged <br /> 1326 782 1225 831 12 <br /> 1330 753 1157 776 24 <br /> 1334 744 1172 783 37 <br /> 1340 sample <br /> comments <br /> drawdown= 106 <br /> % recovery=60 85 ft=87% <br />