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. MONITORING WELL SAMPLING DATA <br /> Protect Name Stockton Maintenance Sta Project Number 58475-06-24H <br /> Well No MW-4 Date 913/03 <br /> Well Diameter 4 in Field Personnel 1E <br /> Casing Length 73 04 feet Screened Casing Length NA <br /> LWell Elevation 21 98 feet above MSL <br /> PURGE CHARACTERISTICS <br /> [FWaterth Before Purging 53 02 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 13 06 Gal --7Volumes Purged 3 1 <br /> Start Purging Time 1107 End Purging Time 1124 <br /> Total Time 17 mm Flow Gauge to <br /> Total Volume Pumped 40 Gal Avg Flow Rate 2 4 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 /> 1113 230 431 739 14 <br /> 1119 222 428 741 28 <br /> I 1124 21 8 427 757 40 <br /> 1 <br /> 1130 Sample <br /> Comments Purge water clear, no odor <br /> Turbidity=37 ntu <br />