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MONITORING WELL SAMPLING DATA <br /> Protect Name Stockton Maintenance Sta Project Number 58475-06-24C <br /> Well No VW-1 Date 12/12/02 <br /> Well Diameter 4 in Field Personnel JE/DW <br />' Casing Length 66 71 feet Screened Casing Length NA <br /> Well Elevation 21 98 feet above MSL <br />' PURGE CHARACTERISTICS <br /> Water Depth Before Purging 52 60 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 9 21 Gal Volumes Purged 3 0 <br /> Start Purging Time 0943 End Purging Time 0954 <br /> Total Time 11 min Flow Gauge to <br />' Total Volume Pumped 28 Gal Avg Flow Rate 2 5 gpm <br /> LWaterDepth After Purging feet Time <br /> SAWLING CE ARACTIERISTICS <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 /> 0947 201 492 668 9 <br />' 0950 203 511 664 18 <br /> 0954 204 512 665 28 <br /> 1005 Sample <br /> Comments Purge water clear, strong hydrocarbon odor <br /> [Turbidity= 97 ntu <br /> J <br />