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1 , <br /> MONITORING WELL SAMPLING DATA <br /> Project Name Shop 10 Maintenance Sta Project Number S8475-06-24A <br /> Well No MW-20 Date 7/8/02 <br /> Well Diameter 4 in Field Personnel JE/CK <br /> Casing Length 90 90 feet Screened Casing Length NA <br /> Well Elevation 22 52 feet above MSL <br /> PURGE CHARACTERISTICS <br /> Water Depth Before Purging 50 68 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 26 25 Gal Volumes Purged 3 0 <br /> Start Purging Time 1248 End Purging Time 1316 <br /> Total Time 28 min IFlow Gauge to <br /> Total Volume Pumped 79 Gal Avg Flow Rate 2 8 gpm <br /> Water Depth After Purging feet Time <br /> SAMPLING CHARACTIERISTICS <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 /> (°C) (umbos/cm) Purged <br /> 1257 229 420 780 26 <br /> ' 1306 21 5 422 799 52 <br /> 1316 214 425 805 79 <br /> 1325 Sample <br /> Comments Purge water clear <br /> Turbidity= - 005 ntu <br /> r <br />