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MONITORING WELL SAMPLING DATA <br /> Protect Name Stockton Maintenance Sta Project Number 58475-06-24B <br />' Well No MW-5 Date 10/03/02 <br /> Well Diameter 4 in Field Personnel JE/CK <br />' Casing Length 72 09 feet Screened Casing Length NA <br /> Well Elevation 22 03 feet above MSL <br />' PURGE CHARACTERISTICS <br />' Water Depth Before Purging 52 71 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 12 65 Gal --7Volumes Purged 3 0 <br /> Start Purging Time 0903 End Purging Time 0921 <br /> Total Time 18 min Flow Gauge to <br />' Tota1 Volume Pumped 38 Gal Avg Flow Rate 2 1 gpm <br /> Water Depth After Purging feet Time <br /> SAMPL111'IG 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 /> 0909 199 492 689 13 <br />' 0915 208 528 686 26 <br /> 0921 208 528 681 38 <br /> 0930 Sample <br /> Comments Purge water clear,no odor <br /> 1 <br />' Turbidity= 18 ntu <br />