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MONITORING WELL SAMPLING DATA <br /> Project Name Stockton Maintenance Sta Project Number S8475-06-24B <br /> Well No MW-6 Date 10/02/02 <br /> Well Diameter 4 in Field Personnel JE/CK <br /> Casing Length 73 35 feet Screened Casing Length NA <br /> Well Elevation 21 41 feet above MSL <br /> PURGE CHARACTERISTICS <br /> Water Depth Before Purging 52 10 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 13 87Ga1 I Volumes Purged 3 0 <br /> Start Purging Time 1459 End Purging Time 1514 <br /> Total Time 15 min Flow Gauge to <br /> Total Volume Pumped 42 Gal Avg Flow Rate 2 8 gpm <br /> Water Depth After Purging feet Time <br /> SAIVIPLI[NG 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 FCONDUCTMTY pH Gallons <br /> CC (umhos/em) Purged <br /> 1504 219 500 666 14 <br /> 1 1509 216 508 669 28 <br /> 1514 21 5 516 671 42 <br /> 1525 Sample <br /> Comments Purge water turbid, slight odor <br /> Turbidity= 10 ntu <br />