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MONTT'ORING WELL SAMPLING DATA <br /> Protect Name Shop 10 Maintenance Sta Protect Number S8475-06-24H <br /> Well No MW-20 Date 9/2/03 <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 52 82 ft -F 2 in = 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 24 84 Gal Volumes Purged 3 0 <br /> Start Purging Time 1027 End Purging Time 1114 <br /> Total Time 47 min Flow Gauge to <br /> Total Volume Pumped 75 Gal Avg Flow Rate 1 6 gpm <br /> Water Depth After Purging feet Time <br /> • SAMPLING CHARACTERISTICS <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 /> aC (umhos/cm) Purged <br /> 1043 235 341 743 25 <br /> 1059 234 335 736 50 <br /> 1114 224 337 749 75 <br /> 1120 Sample <br /> Comments Purge water clear <br /> Duplicate sample collected <br /> Turbidity= 18 ntu <br />