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MONITORING WELL SAMPLING DATA <br /> t <br /> Protect Name Stockton Maintenance Sta Project Number 58475-06-24K <br />' Well No VW-2 Date 05/27/04 <br /> Well Diameter 4 in Field Personnel 7E/DW <br />' Casing Length 69 75 feet Screened Casing Length NA <br /> Well Elevation 22 18 feet above MSL <br /> PURGE CHARACTERISTICS <br />' Water Depth Before Purging 52 66 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 11 16 Gal Volumes Purged 3 0 <br />' Start Purging Time 1321 End Purging Time 1333 <br /> Total Time 12 nun Flow Gauge to <br />' Total Volume Pumped 34 Gal Avg Flow Rate 2 8 gpm <br /> Water Depth After Purging feet Time <br /> SAMPLING CHARACT]EPaSTICS <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 />' 1328 222 1011 741 11 <br /> 1329 214 1024 746 22 <br />' 1333 21 5 1013 751 34 <br />' 1335 Sample <br /> Comments Purge water clear,hydrocarbon odor <br /> Turbidity= 68 ntu <br />