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MONITORING WELL SAMPLING DATA <br /> ' Project Name Stockton Maintenance Sta. Project Number 58475-06-24D <br />' Well No VW-1 Date 3/18/03 <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 51 57 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 9 88Ga1 Volumes Purged 3 0 <br /> Start Purging Time 1417 End Purging Time 1432 <br /> Total Time 15 min Flow Gauge to <br /> Total Volume Pumped 30 Gal Avg Flow Rate 2 0 gpm <br /> Water Depth After Purging feet Time <br /> SAMPLING CIIARACTERISTICS <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) (urmhos/cm) Purged <br /> 1422 21 1 1139 703 10 <br /> 1427 211 1131 707 20 <br /> 1432 208 1137 7 10 30 <br /> 1440 Sample <br /> Comments Purge water clear, strong hydrocarbon odor <br /> Turbidity— 89 n t u <br />