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MONITORING WELL SAMPLING DATA <br /> iProject Name Stockton Maintenance Sta Protect Number S8475-06-24F <br />' Well No MW-] Date 6/17/03 <br /> Well Diameter 4 in Field Personnel JE/DW <br /> I <br />' Casing Length 80 feet Screened Casing Length NA <br /> Well Elevation 22 06 feet above MSL <br />' PURGE CHARACTERISTICS <br /> Water Depth Before Purging 51 53 ft 2 in = 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 18 58 Gal Volumes Purged 3 0 <br />' Start Purging Time 1247 End Purging Time 1311 <br /> Total Time 24 min Flow Gauge to <br />' Total Volume Pumped 56 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 I CONDUCTIVITY pH Gallons <br /> (°C) (umhos/cm) Purged <br /> 1255 250 1053 504 19 <br />' 1303 232 I083 589 38 <br /> 1311 23 1 1073 5 76 56 <br /> 1315 Sample <br /> Comments Purge water clear,odor <br /> Turbidity= 36 ntu <br /> i <br />