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MONITORING WELL SAMPLING DATA <br /> JFPr7ojectName Stockton Maintenance Sta Project Number 58475-06-24C <br /> ' Well No MW-6 Date 12/12/02 <br /> Well Diameter 4 in Field Personnel JE/DW <br /> Casing Length 73 35 feet Screened Casing Length NA <br /> Well Elevation 2141 feet above MSL <br /> ' PURGE CHARACTERISTICS <br /> ' Water Depth Before Purging 51 91 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 13 99 Gal Volumes Purged 3 0 <br /> ' Start Purging Time 1005 End Purging Time 1016 <br /> Total Time I I min Flow Gauge to <br /> ' Total Volume Pumped 42 Gal Avg Flow Rate 3 8 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 (umbos/cm) Purged <br /> 1010 203 461 665 14 <br /> ' 1015 205 475 661 28 <br /> 1016 21 1 480 668 42 <br /> 1 y <br /> 1025 Sample <br /> Comments Purge water turbid, slight odor <br /> ' Turbidity= 12 ntu <br /> 1 <br />