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MONITORING WELL, SAMPLING DATA <br />' Project Name Shop 10 Maintenance Sta Protect Number 58475-06-24B <br />' Well No MW-12 Date 10/02/02 <br /> Well Diameter 4 in Field Personnel JE/CK <br /> Casing Length 77 50 feet Screened Casing Length NA <br /> Well Elevation NA <br /> PURGE CHARACTERISTICS <br /> Water Depth Before Purging 5198 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 16 65 Gal Volumes Purged 3 0 <br />' Start Purging Time 0813 End Purging Time 0831 <br /> Total Time 18 min Flow Gauge to <br /> Total Volume Pumped 50 Gal Avg Flow Rate 2 8 gpm <br /> Water Depth After Purging feet Time <br /> SAMPLING CHARACTERISTICS <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 /> 0819 191 414 708 17 <br /> 0825 200 421 704 34 <br /> 0831 200 427 702 50 <br /> 0840 Sample <br /> Comments Purge water clear <br />' Turbidity=35 ntu <br /> 1 <br />