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MONITORING WELL SAMPLING DATA <br /> Project Name Stockton Maintenance Sta Project Dumber 58475-06-24F <br /> Well No MW-9 Date 6/17/03 <br /> Well Diameter 4 in Field Personnel JE/DW <br /> Casing Length 78 04 feet Screened Casing Length NA <br /> Well Elevation 20 80 feet above MSL <br /> PURGE CHARACTERISTICS <br /> Water Depth Before Purging 49 48 ft 2 to= 1632 Gallft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 18 64 Gal Volumes Purged 3 0 <br /> Start Purging Time 1002 End Purging Time 1022 <br /> Total Time 20 min Flow Gauge to <br />' Total Volume Pumped 56 Gal Avg Flow Rate 2 8 gpm <br /> Water Depth After Purging feet Time <br /> SAIVYPLIIIiG CHARACTERISTICS ' <br />' Purging Method Submersible Pump 11 Sampling Method Disposable Bailer <br /> Laboratory Analysis TPHg, TPHd, BTEX, 5 FOCs by EPA Test Method 8260 <br /> 1 TIME TEMPERATURE CONDUCTIVITY pH Gallons <br /> (°C) (umhos/cm) Purged <br /> 1008 217 1094 416 19 <br />' 1016 21 0 1098 421 38 <br /> 1022 209 1102 428 56 <br /> 1030 Sample <br /> Comments Purge water clear, no odor <br /> Turbidity= 23 ntu <br />