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1 i <br /> MONITORING WELL. SAMPLING DATA <br /> Project Name Stockton Maintenance Sta Tp Number 58475-06-24D <br /> Well No MW-5 Date 3/18/03 <br /> Well Diameter 4 in Field Personnel JE/CK <br />' Casing Length 72 09 feet Screened Casing Length NA <br /> LWell Elevation 22 03 feet above MSL <br />' PURGE CHARACTERISTICS <br />' Water Depth Before Purging 51 54 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 13 41 Gal Volumes Purged 3 1 <br />' Start Purging Time 1152 End Purging Time 1207 <br /> Total Time 15 min Flow Gauge to <br /> ' Total Volume Pumped 41 Gal Avg Flow Rate 2 7 gpm <br /> Water Depth After Purging feet Time <br /> SAMIPLII`NG 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 /> —] <br /> °C (umbos/cm) Purged <br /> 1157 21 7 1062 729 14 <br /> ' 1202 222 1063 731 28 <br /> 1207 227 1065 724 41 <br /> 1215 Sample <br /> Comments Purge water clear, no odor <br /> Turbidity= 54 ntu <br />