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MONITORING WELL SAMPLING DATA <br />' Protect Name Stockton Maintenance Sta Protect Number 58475-06-24C <br />' Well No MW-2 Date 12/12/02 <br /> Well Diameter 4 in Field Personnel JE/DW <br />' Casing Length 79 7 feet Screened Casing Length NA <br /> Well Elevation 21 98 feet above MSL <br />' PURGE CHARACTERISTICS <br /> Water Depth Before Purging 52 73 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 17 60 Gal Volumes Purged 3 0 <br />' Start Purging Time 1033 End Purging Time 1051 <br /> Total Time 18 min Flow Gauge to <br />' Total Volume Pumped 53 Gal Avg Flow Rate 2 9 gpm <br /> Water Depth After Purging feet Time <br /> SAMPLING CHARACTERISTICS <br />' Purging Method Submersible Pump 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 /> 1039 198 455 676 18 <br /> 1045 207 468 664 36 <br /> 1051 206 446 668 53 <br /> 1100 Sample <br /> Comments Purge water clear, strong odor <br /> F� <br />' Turbidity= 10 ntu <br /> 1 <br />