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i MONITORING WELL SAMPLING DATA <br /> Project Name Stockton Maintenance Sta Project Number S8475-�06-24H <br /> Well No MW-7 Date 913/03 <br /> Well Diameter 4 in Field Personnel JE <br /> Casing Length 74 61 feet Screened Casing Length NA <br /> Well Elevation 21 75 feet above MSL <br /> FFPURGE CHARACTERISTICS <br /> Water Depth Before Purging 52 63 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 14 34 Gal Volumes Purged 3 1 <br /> Start Purging Time 0907 End Purging Time 0924 <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 /> 10 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 I CONDUCTIVITY pH Gallons <br /> °C (umbos/cm) Purged <br /> 0913 222 459 726 15 <br /> 0919 220 463 727 30 <br /> 0924 217 466 729 44 <br /> 0930 Sample <br /> Comments Purge water clear, no odor <br /> Duplicate Sample taken <br /> Turbidity= 70 ntu <br />