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MONITORING WELL SAMPLING DATA <br /> ' Project Name Stockton Maintenance Sta Project Number 58475-06-24F <br /> ' Well No MW-5 Date 6/17/03 <br /> Well Diameter 4 in Field Personnel J-E/DW <br /> Casing Length 72 09 feet Screened Casing Length NA <br /> Well EIevation 22 03 feet above MSL <br /> PURGE CHARACTERISTICS <br />' Water Depth Before Purging 51 70 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 13 31 Gal Volumes Purged 3 0 <br />' Start Purging Time 1106 End Purging Time 1121 <br /> Total Time 15 min Flow Gauge to <br /> Total Volume Pumped 40 Gal Avg Flow Rate 2 7 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 /> (°C) (umhos/cm) Purged <br /> 1111 25 5 890 447 13 <br />' 1116 239 964 433 26 <br /> 1121 242 953 435 40 <br /> 1125 Sample <br /> Comments Purge water clear, no odor <br /> Duplicate sample collected <br /> Turbidity= 42 ntu <br /> 1 <br />