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MONITORING WELL SAMPLING DATA <br /> Protect Name Stockton Maintenance Sta. Protect Number 58475-06-24B <br />' Wel l No VW-1 Date 10/03/02 <br /> Well Diameter 4 in Field Personnel JE/CK <br />' Casing Length 66 71 feet Screened Casing Length NA <br /> Well Elevation 2198 feet above MSL <br /> PURGE CHARACTERISTICS <br /> Water Depth Before Purging 52 71 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 9 13 Gal Volumes Purged 3 1 <br />' Start Purging Time 1028 End Purging Time 1039 <br /> Total Time 11 min Flow Gauge to <br />' Total Volume Pumped 28 Gal Avg Flow Rate 2 5 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 />' <br /> TIME TEMPERATURE CONDUCTNITY pH Gallons <br /> °C (umhos/cm} Purged <br /> 1031 207 534 666 9 <br />' 1034 208 545 667 18 <br /> 1039 21 1 563 666 28 <br /> 1050 Sample <br /> Comments Purge water clear, strong hydrocarbon odor <br />' Turbidity= 70 ntu <br />