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MONITORING WELL, SAMPLING DATA <br /> Project Name Stockton Yard Project Number 58100-06-62 <br /> ' Well No MW-9 Date 4-22-96 <br /> Well Diameter 4 in Field Personnel IMBL <br /> Casing Length 79 feet Screened Casing Length <br /> Well Elevation feet MSL measured from <br /> PURGE CHARACTERISTICS <br /> Water Depth Before Pumping 59 99 ft 2 in = 1632 Gal/ft 4 in = 6528 Gal/ft <br /> ' Calculated Water Column Volume 12 4 Gal Volumes Purged 3 <br /> ' Start Pumping Time 0948 End Pumping Time 1005 <br /> Total Time 17 nun Flow Gauge 22190 to 22227 <br /> ' Total Volume Pumped 37 Gal Avg Flow Rate 2 2 gpm <br /> Water Depth After Pumping 63 61 feet Time 1005 <br /> SAMPL][NNG CHARACTERISTICS <br /> Sampling Method disposable bailer <br /> Laboratory Analysis TPHg, TPHd,BTEX, MTBE <br /> TIME TEMPERATURE CONDUCTIVITY pH Gallons <br /> (OF) (umhos/cm) Purged <br /> 0956 67 7 1196 Y 745 12 <br /> ' 1000 688 1204 748 24 <br /> 1005 679 1173 749 37 <br /> 1015 sample <br /> 1 <br /> comments slightly turbid <br /> 1 <br /> drawdown=362 <br /> ' % recovery=60 27 ft= 92% <br />