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MONITORING WELL SAMPLING DATA <br /> Project Name Stockton Maintenance Sta Protect Number 58475-06-24B <br />' Well No MW-10 Date 10/03/02 <br /> Well Diameter 4 in Field Personnel JE/CK <br />' Casing Length 76 20 feet Screened Casing Length NA <br /> [:Well Elevation 21 79 feet above MSL <br /> PURGE CHARACTERISTICS <br />' Water Depth Before Purging 52 70 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 15 34 Gal Volumes Purged 3 1 <br />' Start Purging Time 0832 End Purging Time 0847 <br /> Total Time 15 min Flow Gauge to <br />' Total Volume Pumped 47 Gal Avg Flow Rate 3 1 gpm <br /> [WaterDepth After Purging feet Time <br /> SAPIPLI NG CHARACTERISTICS <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 CONDUCTIVITY pH Gallons <br /> °C (umhos/cm) Purged <br /> 0837 191 483 705 16 <br />' 0842 201 487 700 32 <br /> 0847 193 501 705 47 <br /> 0855 Sample <br /> Comments Clear <br />' Turbidity=21 ntu <br />