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MONITORING WIELL, SAMPLING DATA <br />' Protect Name Stockton Maintenance Sta Protect Number 58475-06-24D <br /> Well No MW-4 Date 3/18/03 <br /> Well Diameter 4 in Field Personnel JE/CK <br />' Casing Length 73 04 feet Screened Casing Length NA <br /> Well Elevation 2198 feet above MSL <br />' PURGE CHARACTERISTICS <br /> Water Depth Before Purging 51 54 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 14 03 Gal =Volumes Purged 3 0 <br />' Start Purging Time 1251 End Purging Time 1306 <br /> Total Time 15 min Flow Gauge to <br />' Total Volume Pumped 43 Gal Avg Flow Rate 2 8 gpm <br /> Water Depth After Purging feet Time <br /> SANIPLING CIIARACITERISTICS <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 I CONDUCTIVITY pH Gallons <br /> °C (umhos/cm) Purged <br /> 1256 213 1082 732 13 <br />' 1301 210 1100 741 26 <br /> 1306 21 1 1119 737 43 <br /> E::1315 Sample <br /> Comments Purge water clear,no odor <br /> Turbidity= 37 ntu <br /> 1 <br />