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MONITORING WELL SAMPLING DATA <br />' Protect Naive Stockton Maintenance Sta. Protect Number 58475-06-24F <br />' Well No MW-4 Date 6/17103 <br /> Well Diameter 4 in Field Personnel JE/DW <br />' Casing Length 73 04 feet Screened Casing Length NA <br /> Well Elevation 21 98 feet above MSL <br />' PURGE CHARACTERISTICS <br />' Water Depth Before Purging 51 72 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 13 91 Gal Volumes Purged 3 0 <br />' Start Purging Time 1157 End Purging Time 1214 <br /> Total Time 17 min Flow Gauge to <br />' Total Volume Pumped 42 Gal Avg Flow Rate 2 5 gpm <br /> Water Depth After Purging feet TTime <br /> SAMPLING CELU ACTIERISTICS <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 I CONDUCTIVITY pH Gallons <br /> (°C) (umhos/cm) Purged <br /> 1203 230 1015 445 14 <br />' 1209 225 1017 468 28 <br /> 12I4 223 1032 6 16 42 <br /> 1220 Sample <br /> Comments Purge water clear,no odor <br /> Turbidity=42 ntu <br /> r <br />