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16 <br /> MONITORING WELL SAMPLING DATA <br /> Project Name Stockton Yard Protect Number 58100-06-62 <br /> ' Well No MW-7 Date 7/1/96 <br /> Well Diameter 4 in Field Personnel IM/RS <br /> Casing Length 75 6 feet Screened Casing Length <br /> Well Elevation feet MSL measured from <br /> PURGE CHARACTERISTICS <br /> Water Depth Before Pumping 59 60 ft 2 in = 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 10 4 Gal Volumes Purged 3 <br /> Start Pumping Time 1303 End Pumping Time 1335 <br /> Total Time 32 min Flow Gauge 23870 to 23901 <br /> Total Volume Pumped 31 Gal Avg Flow Rate 0 97 gpm <br /> Water Depth After Pumping 6110 feet Time 1336 <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 /> 1307 763 634 6 14 10 <br /> 1312 733 661 573 20 <br /> 1 1335 760 689 590 31 <br /> 1345 sample <br /> comments dry after 21 gallons <br /> drawdown= 5 70 <br /> % recovery=60 50= 84% <br />