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MONITORING WELL SAMPLING DATA <br /> [Project Name Stockton Maintenance Sta Project Number S8475-06-24K <br />' Well No MW-1 Date 5/27/04 <br /> Well Diameter 4 in Field Personnel JE/DW <br /> Casing Length 80 feet Screened Casing Length NA <br /> Well Elevation 22 06 feet above MSL <br />' PURGE CHARACTERISTICS <br />' Water Depth Before Purging 52 29 ft 2 in = 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 18 09 Gal Volumes Purged 3 0 <br /> Start Purging Time 1151 End Purging Time 1213 <br /> Total Time 22 min Flow Gauge to <br />' Total Volume Pumped 54 Gal Avg Flow Rate 2 5 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 /> [::!!E TEMPERATURE CONDUCTIVITY pH Gallons <br /> °C (umhos/cm) Purged <br /> 1158 221 1153 758 18 <br /> ' 1205 220 1142 762 36 <br /> 1213 219 1146 769 54 <br /> ' 1215 Sample <br /> Comments Purge water clear, odor <br /> ' Turbidity= 67 ntu <br />