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MONITORING WELL SAMPLING DATA <br /> Protect Name Shop 10 Maintenance Sta Project Number 58475-06-24J <br /> Well No MW-12 Date 03/23/04 <br />' Well Diameter 4 in <br /> Feld Personnel JE/LF <br />' Casing Length 77 50 feet Screened Casing Length NA <br /> Well Elevation NA <br />' PURGE CHARACTERISTICS <br />' Water Depth Before Purging 5103 ft 2 in = 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 17 28 Gal Volumes Purged 3 0 <br />' Start Purging Time 1203 End Purging Time 1226 <br /> Total Time 23 min Flow Gauge to <br /> Total Volume Pumped 52 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 CONDUCTIVITY pH Gallons <br /> (QC) (umhos/cm) Purged <br /> 1211 212 597 8 13 17 <br /> 1219 214 612 782 34 <br /> 1226 212 641 779 52 <br /> L71230 Sample <br /> 1 <br /> Comments Purge water clear <br />' Turbidity= 21 ntu <br /> 1 <br />