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MONITORING WELL SAMPLING DATA <br />' Protect Name Stockton Maintenance Sta Protect Number S8475-06-24B <br />' Welt No MW-4 Date 10/03/02 <br /> Well Diameter 4 in Field Personnel JE/CK <br />' Casing Length 73 04 feet Screened Casing Length NA <br /> Well Elevation 21 98 feet above MSL <br />' PURGE CHARACTERISTICS <br />' Water Depth Before Purging 52 71 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 13 27 Gal Volumes Purged 3 0 <br /> Start Purging Time 0932 End Purging Time 0948 <br /> Total Time 16 mm Flow Gauge to � <br />' Total Volume Pumped 40 Gal Avg Flow Rate 2 5 gpm <br /> Water Depth After Purging feet Time <br /> SAMPLING CHARACTERISTICS <br />' Purging Method Submersible Pump 11 Sampling Method Disposable Baiter <br /> Laboratory Analysis TPHg, TPHd, BTEX, 5 FOCs by EPA Test Method 8260 <br />' TIME TEMPERATURE CONDUCTIVITY pH Gallons <br /> °C (umhos/cm) Purged <br /> 0936 202 544 686 13 <br />' 0942 203 542 685 26 <br /> 0948 206 554 687 40 <br /> 0955 Sample <br /> Comments Purge water clear,no odor <br /> Turbidity= 75 ntu <br />