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MONITORING WELL SAMPLING DATA <br /> Project Name Stockton Maintenance Sta. Project Number 58475-06-24F <br /> Well No MW-11 Date 6/17/03 <br /> Well Diameter 4 in Field Personnel JE/DW <br /> Casing Length 78 feet Screened Casing Length NA <br /> Well Elevation 2149 feet above MSL <br /> PURGE CHARACTERISTICS <br /> Water Depth Before Purging 51 28 ft 2 in = 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 17 44 Gal I Volumes Purged 3 0 <br /> Start Purging Time 1128 End Purging Time 1149 <br /> Total Time 21 min Flow Gauge to <br /> Total Volume Pumped 53 Gal Avg Flow Rate 2 5 gpm <br /> Water Depth After Purging feet Time <br /> SAMPLING CHARACTERISTICS <br /> I 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 /> 1135 273 994 464 18 <br /> 1142 241 990 426 36 <br /> 1149 229 998 434 53 <br /> 1155 Sample <br /> Comments Purge water clear, no odor <br /> Turbidity=22 ntu <br />