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MONITORING WELL SAMPLING DATA <br /> Project Name Stockton Maintenance Sta Protect Number S8475-06-24I <br /> Well No MW-4 Date 11/19/03 <br /> Well Diameter 4 in Field Personnel JE/DW <br /> Casing Length 73 04 feet Screened Casing Length NA <br /> Well Elevation 2198 feet above MSL <br /> PURGE CHARACTERISTICS <br /> Water Depth Before Purging 53 83 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 12 54 Gal Volumes Purged 3 0 <br /> Start Purging Time 1102 End Purging Time 1118 <br /> Total Time 16 mm Flow Gauge to <br /> Total Volume Pumped 38 Gal Avg Flow Rate 2 4 gpm <br /> Water Depth After Purging feet Time <br /> SANTLING CEARACTERISTICS <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 /> 1108 208 936 745 13 <br /> 1113 21 1 950 758 26 <br /> 1118 203 954 752 38 <br /> 1120 Sample <br /> Comments Purge water clear, no odor <br /> Turbidity=32 ntu <br />