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MONI'T'ORING WELL SAMPLING DATA <br /> Protect Name Stockton Maintenance Sta Project Number 58475-06-24 <br /> Well No MW-2 Date 5/10/02 <br /> Well Diameter 4 in Field Personnel JE <br /> ICasing Length 79 7 feet Screened Casing Length <br /> Well Elevation feet MSL measured from <br /> PURGE CHARACTERISTICS <br /> Water Depth Before Purging 49 14 ft 2 in= 1632 GaUft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 19 94 Gal Volumes Purged 3 0 <br />' Start Purging Time 1156 End Purging Time 1212 <br /> Total Time 16 min Flow Gauge to <br />' Total Volume Pumped 60 Gal Avg Flow Rate 3 75 gpm <br /> Water Depth After Purging feet Time <br /> SAMPLING CHARACTERISTICS <br /> Purging Method Submersible Pump 11 Sampling Method Disposable Bailer <br /> Laboratory Analysis TPHg, TPHd, BTEX, 5 FOCs by EPA Test Method 82.60 <br /> I TIME TEMPERATURE CONDUCTIVITY pH Gallons <br /> (°C) (umhos/cm) Purged <br /> 1201 220 578 7 13 20 <br /> 1206 220 593 704 40 <br /> 1212 218 586 703 60 <br /> 1220 Sample <br /> Comments Purge water clear, strong odor <br /> Turbidity= -035 ntu <br /> I <br />