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MONITORING WELL SAMPLING DATA <br />' <br /> Project Name Stockton Maintenance Sta Project Number 58475-06-24K <br /> J J <br />' Well No MW-6 Date 05/27/04 <br /> Well Diameter 4 in Field Personnel JE/DW <br />' Casing Length 73 35 feet Screened Casing Length NA <br /> [—Weil Elevation 21 41 feet above MSL <br /> PURGE CHARACTERISTICS <br />' Water Depth Before Purging 51 75 ft 2 in = 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 14 10 Gal Volumes Purged 3 0 <br /> Start Purging Time 1127 End Purging Time 1147 <br /> Total Time 20 min Flow Gauge to <br /> Total Volume Pumped 43 Gal Avg Flow Rate 2 2 gpm <br /> Water Depth After Purging feet Time <br /> SAMPLING 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 />' 1134 222 1004 770 14 <br /> 1140 220 1029 774 28 <br /> 1147 22 1 1026 775 43 <br /> 1150 Sample <br /> Comments Purge water turbid, slight odor <br /> Turbidity= 43 ntu <br />