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MONI'T'ORING WELL SAMPLING DATA <br /> Project Name Stockton Yard Project Number 58100-06-62 <br /> J J <br /> Well No MW-4 Date 7/1/96 <br /> Well Diameter 4 in Field Personnel IM/RS <br /> Casing Length 74 feet Screened Casing Length <br /> Well Elevation feet MSL measured from <br /> PURGE CHARACTERISTICS <br />' Water Depth Before Pumping 59 87 ft 2 in = 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 9 2 Gal Volumes Purged 3 <br /> Start Pumping Time 1106 End Pumping Time 1118 <br /> Total Time 12 min Flow Gauge 23780 to 23807 <br /> Total Volume Pumped 27 Gal Avg Flow Rate 2 3 gpm <br /> Water Depth After Pumping 66 94 feet Time 1119 <br /> SAMPLING CHARACTERISTICS <br /> Sampling Method disposable bailer <br /> Laboratory Analysis TPHg,TPHd,BTEX,MTBE <br /> TIME TEMPERATURE CONDUCTIVITY pH Gallons <br /> (°F} {umbos/cm} Purged <br /> 1111 763 554 684 9 <br /> 1115 742 594 658 18 <br /> 1118 730 570 706 27 <br /> 1 1130 sample <br /> comments <br /> drawdown=7 07 <br /> % recovery= <br /> 6128 =80 % <br />