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MONITORING WELL SAMPLING DATA <br /> Protect Name STOCKTON YARD Project Number S8100-06-62 <br /> Well No MW-5 Date 4/22/96 <br /> ' Well Diameter 4 in Field Personnel IM/BL <br /> CasingLength 745 feet Screened Casing Length 15 <br /> Well Elevation feet MSL measured from <br /> ' PURGE CHARACTERISTICS <br /> Water Depth Before Pumping 6103 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 88 Gal Volumes Purged 3 <br /> Start Pumping Time 1547 End Pumping Time 1649 <br /> ' Total Time 62 min Flow Gauge 22518 to 22545 <br /> ' Total Volume Pumped 27 Gal Avg Flow Rate 0 4 gpm <br /> Water Depth After Pumping 70 90 feet Time 1649 <br /> SAMPLING CHARACTERISTICS <br /> Sampling Method 2"disposable bailer <br /> Laboratory Analysis TPHg,TPHd, BTEX,MTBE <br /> TIME TEMPERATURE CONDUCTNITY pH Gallons <br /> (°F) (umhos/cm) Purged <br /> 1602 733 696 807 9 <br /> 1619 725 842 882 17 <br /> 1649 729 881 869 27 <br /> 1 <br /> ' 1710 Sample <br /> ' comments Pumped dry three Mmes <br /> Draw Down 9 87' <br /> ' %Recovery 63 00 ft <br /> Sample @ 62 98 ft= 80%Recovery <br /> t <br />