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MONITORING WELL SAMPLING DATA <br /> Project Name Stockton Maintenance Sta Project Number SS475- <br /> 06-24H <br /> Well No MW-8 Date 9/3/03 <br /> Well Diameter 4 in Field Personnel JE <br /> Casing Length 76 60 feet Screened Casing Length NA <br /> Well Elevation 21 96 feet above MSL <br /> PURGE CHARACTERISTICS <br /> Water Depth Before Purging 52 74 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 15 57 Gal TVolumes Purged 3 0 <br /> Start Purging Time 0806 End Purging Time 0826 <br /> Total Time 17 min Flow Gauge to <br /> Total Volume Pumped 47 Gal Avg Flow Rate 2 8 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 /> 0812 234 456 778 17 <br /> 0816 221 451 759 34 <br /> 0823 222 453 757 47 <br /> 0830 Sample <br /> Comments Purge water clear, no odor <br /> Turbidity=37 ntu <br /> I <br />