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MONI'T'ORING WELL SAMPLING DATA <br />' Project Name Stockton Maintenance Sta Project Number S8475-06-24 <br /> Well No MW-7 Date 5/10/02 <br /> Well Diameter 4 in Field Personnel JE <br /> Casing Length 74 61 feet Screened Casing Length <br /> I Well Elevation feet MSL measured from <br />' PURGE CHARACTERISTICS <br /> Water Depth Before Purging 48 66 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 16 94 Gal Volumes Purged 3 0 <br /> Start Purging Time 1002 End Purging Time 1016 <br /> Total Time 14 min Flow Gauge to <br />' Total Volume Pumped 51 Gal Avg Flow Rate 3 6 gpm <br /> Water Depth After Purging feet Time <br /> SANIiPL)<IVG CHARACTERISTICS <br /> Purging Method Submersible Pump 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 /> 1007 205 676 707 17 <br /> 1012 204 689 707 34 <br /> 1016 209 691 706 51 <br /> 1025 Sample <br /> Comments Purge water clear, no odor <br /> Turbidity=-006 ntu <br /> 1 <br />