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MONITORING WELL SAMPLING DATA <br /> iProject Name Stockton Maintenance Sta Project Number 58475-06-24 <br />' Well No MW-1 Date 5/10/02 <br /> Well Diameter 4 in Field Personnel JE <br /> I <br />' Casing Length 80 feet Screened Casing Length <br /> Well Elevation feet MSL treasured from <br />' PURGE CHARACTERISTICS <br /> Water Depth Before Purging 48 90 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 20 30 Gal Tvolumes Purged 3 0 <br /> Start Purging Time 0911 End Purging Time 0926 <br />' Total Time 15 min Flow Gauge to <br />' Total Volume Pumped 61 Gal Avg Flow Rate 4 0 gpm <br /> Water Depth After Purging feet Time <br /> SAMPLING CkIARACTERISTICS <br /> Purging Method Submersible Pump 11 Sampling Method Disposable Bailer <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 /> 0916 192 626 707 20 <br />' 0921 207 633 708 40 <br /> 0926 193 636 7 13 61 <br /> i <br /> 0935 Sample <br /> Comments Purge water clear, odor <br /> i <br /> Turbidity= -012 ntu <br />