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MONITORING WELL. SAMPLING DATA <br /> Protect Name Shop 10 Maintenance Sta Protect Number 58475-06-24B <br /> Well No MW-20 Date 9130/02 <br /> Well Diameter 4 in Field Personnel ,1E/CK <br /> I 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 52 54 ft —7 2 in = 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Colurin Volume 25 04 Gal Tyolumes Purged 3 0 <br /> I Start Purging Time 1410 End Purging Time 1505 <br /> Total Time 55 min Flow Gauge to <br /> Total Volume Pumped 76 Gal Avg Flow Rate 14 gpm <br /> Water Depth After Purging feet Time <br /> SAKPLING 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 CONDUCTWITY pH Gallons <br /> °C (umhos/cm) Purged <br /> 1427 220 374 703 25 <br /> 1444 212 394 696 50 <br /> 1505 210 397 698 76 <br /> 1 <br /> 1515 Sample <br /> 1 <br /> Comments Purge water clear <br /> I <br /> ' Turbidity= 16 ntu <br /> 1 <br />