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1 <br /> MONITORING WELL SAMPLING DATA <br /> Protect Name Stockton Maintenance Sta Project Number S8475-06-24B <br />' Well No MW-7 Date 10/02/02 <br /> Well Diameter 4 in Field Personnel 3E/CK <br />' Casing Length 74 61 feet Screened Casing Length NA <br /> Well Elevation 21 75 feet above MSL <br />' PURGE CHARACTERISTICS <br /> Water Depth Before Purging 52 30 ft 2 in= 1632 GaVft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 14 56 Gal FVolumes Purged 3 0 <br /> Start Purging Time 1358 End Purging Time 1415 <br /> Total Time 17 min Flow Gauge to <br />' Total Volume Pumped 44 Gal Avg Flow Rate 2 6 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 8260 <br /> TIME TEMPERATURE CONDUCTIVITY pH Gallons <br /> °C (umhos/cm) Purged <br /> 1404 215 552 693 15 <br />' 1410 21 1 569 680 30 <br /> 1415 212 567 673 44 <br /> 1425 Sample <br /> Comments Purge water clear, no odor <br />' Turbidity=55 ntu <br /> • <br /> I <br />