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MONITORING WELL SAMPLING DATA <br /> Project Name Stockton Maintenance Sta Protect Number 58475-06-24F <br /> I Well No MW-12 Date 6/17/03 <br /> Well Diameter 4 in Field Personnel JE/DW <br /> Casing Length 82 80 feet Screened Casing Length NA <br /> Well Elevation 22 82 feet above MSL <br /> PURGE CHARACTERISTICS <br /> Water Depth Before Purging 52 13 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 20 02 Gal Volumes Purged 3 0 <br /> Start Purging Time 0900 End Purging Time 0927 <br /> Total Time 27 mm Flow Gauge to <br /> Total Volume Pumped 61 Gal Avg Flow Rate 2 2 gpm <br /> Water Depth After Purging feet Time <br /> SAMPLING CHARACTERISTICS <br /> I 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 /> 0909 237 1040 547 20 <br /> I0918 209 1079 599 40 <br /> 0927 207 1093 5 81 61 <br /> 0935 Sample <br /> I <br /> Comments Purge water clear <br /> I <br /> Turbidity= 31 ntu <br /> I <br />