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MONI'T'ORING WELL SAMPLING DATA <br /> Protect Name Stockton Maintenance Sta Project Number 58475-06-24C <br />' Well No MW-7 Date 12/12/02 <br /> Well Diameter 4 in Field Personnel JE/DW <br /> Casing Length 74 61 feet Screened Casing Length NA <br /> Well Elevation 2175 feet above MSL <br /> PURGE CHARACTERISTICS <br /> Water Depth Before Purging 52 24 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 14 60 Gal I Volumes Purged 3 0 <br /> ' Start Purging Time 0819 End Purging Time 0833 <br /> Total Time 14 min Flow Gauge to <br /> ' Total Volume Pumped 44 Gal Avg Flow Rate 3 1 gpm <br /> Water Depth After Purging feet Time <br /> SAMPLING CHARACTIERISTICS <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 /> 0824 199 527 688 15 <br /> ' 0829 202 529 683 30 <br /> 0833 211 532 671 44 <br /> 0840 Sample <br /> Comments Purge water clear,no odor <br /> ' Turbidity= 70 ntu <br />