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MONITORING WELL SAMPLING DATA <br /> Project Name Stockton Yard Project Number S8100-06-62 <br /> ' Well No MW-12 Date 4-22-96 <br /> Well Diameter 4 m Field Personnel IMJBL <br /> ' Casing Length 80 feet Screened Casing Length <br /> Well Elevation feet MSL measured from <br /> ' PURGE CHARACTERISTICS <br /> ' Water Depth Before Pumping 61 62 ft 2 in = 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 12 Gal I Volumes Purged 3 <br /> ' Start Pumping Time 1232 End Pumping Time 1247 <br /> Total Time 15 mm Flow Gauge 22310 to 22346 <br /> Total Volume Pumped 36 Gal Avg Flow Rate 2 4 gpm <br /> Water Depth After Pumping 63 03 feet Time 1247 <br /> SAI PLE14G CHARACTERISTICS <br /> Sampling Method disposable bailer <br /> Laboratory Analysis TPHg, TPHd, BTEX, MTBE <br /> TIME TEMPERATURECONDUCTIVITY pH TGallons <br /> (OF) (umhoslcm) Purged <br /> 1237 741 1424 743 12 <br /> ' 1242 746 1420 741 24 <br /> 1247 738 1455 738 36 <br /> 1255 sample <br /> comments <br /> drawdown= 1 41 <br /> % recovery= <br /> 6166 ft=97% <br />