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MONITORING WELL SAMPLING DATA <br /> ' Pect Name Stockton Maintenance Sta Project Number 58475-06-24J <br /> ' Well No MW-7 Date 03/24/04 <br /> Well Diameter 4 in Field Personnel JE/LF <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 5127 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 15 24 Gal Volumes Purged 3 0 <br />' Start Purging Time 1006 End Purging Time 1026 <br /> Total Time 20 min Flow Gauge to <br /> Total Volume Pumped 46 Gal Avg Flow Rate 2 3 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 />' 10I3 214 935 731 15 <br /> 1020 212 935 737 30 <br />' 1026 209 934 735 46 <br />' 1030 Sample <br /> Comments Purge water clear, no odor <br />' Turbidity=29 ntu <br />