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MONITORING WELL SAMPLING DATA <br /> Project Name Stockton Maintenance Sta <br /> J Project Number 58475-06-24H <br /> Well No MW-9 Date 913/03 <br /> Well Diameter 4 in Field Personnel JE <br /> Casing Length 78 04 feet Screened Casing Length NA <br /> Well Elevation 20 80 feet above MSL <br /> PURGE CIEIARACTERISTICS <br /> Water Depth Before Purging 51 80 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 17 12 Gal Volumes Purged 3 0 <br /> Start Purging Time 0932 End Purging Time 0950 <br /> Total Time 18 min Flow Gauge to <br /> Total Volume Pumped 52 Gal Avg Flow Rate 2 9 gpm <br /> Water Depth After Purging feet Time <br /> SAMT LING 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 /> 0938 21 6 452 761 19 <br /> 0944 212 454 747 38 <br /> 0950 210 452 748 52 <br /> 0955 Sample <br /> iComments Purge water clear, no odor <br /> 1 <br /> Turbidity= 31 ntu <br /> • <br /> I <br />