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MONITORING WELL SAMPLING DATA <br /> Protect Name Shop 10 Maintenance Sta Protect Number 58475-06-24D <br />' Well No MW-20 Date 3/17/03 <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 51 30 ft 2 in = 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 25 85 Gal Volumes Purged 3 0 <br />' Start Purging Time 1102 End Purging Time 1153 <br /> Total Time 51 min Flow Gauge to <br />' Total Volume Pumped 77 Gal Avg Flow Rate 1 5 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 TEMPERA!n CONDUCTIVITY pH Gallons <br /> (°C) (umhos/cm) Purged <br /> 1119 206 682 787 25 <br /> 1136 208 691 785 50 <br /> 1153 212 699 788 77 <br /> 1155 Sample <br /> Comments Purge water clear <br /> Turbidity= 12 ntu <br />