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MONITORING WELL SAMPLING DATA <br /> rProtect Name Shop 10 Maintenance Sta Project Number 59475-06-24C <br />' Well No MW-13 Date 12/11/02 <br /> Well Diameter 4 in Field Personnel JE/DW <br />' Casing Length 86 70 feet Screened Casing Length NA <br /> Well Elevation 21 12 feet above MSL <br /> PURGE CHARACTERISTICS <br /> Water Depth Before Purging 52 51 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br />' Calculated Water Column Volume 22 31 Gal Volumes Purged 3 0 <br />' Start Purging Time 0845 End Purging Time 0906 <br /> Total Time 21 min Flow Gauge to <br />' Total Volume Pumped 67 Gal Avg Flow Rate 3 2 gpm <br /> Water Depth After Purging feet Time <br /> wSAM[PILING 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 CONDUCTNITY pH Gallons <br />' °C (umhos/cm) Purged <br /> 0852 196 452 684 23 <br />' 0859 205 462 674 45 <br /> 0906 209 464 676 67 <br /> -7 <br /> 0915 Sample <br /> Comments Clear, Slight odor <br /> ' Turbidity= 20 ntu <br /> • <br />