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MONITORING WELL SAMPLING DATA <br /> 1 <br /> Project Name Stockton Maintenance Sta Project Number 58475-06-24K <br />' Well No MW-9 Date 05/27/04 <br /> Well Diameter 4 in Field Personnel JE/DW <br /> tCasing Length 78 04 feet Screened Casing Length NA <br /> LWell Elevation 20 80 feet above MSL <br /> 1 <br /> PURGE CHARACTERISTICS <br />' Water Depth Before Purging 5121 ft 2 in= 1632 Gal/ft 4 in = 6528 Gallft <br /> Calculated Water Column Volume 17 51 Gal Volumes Purged 3 0 <br />' Start Purging Time 0932 End Purging Time 0950 <br /> Total Time 18 min Flow Gauge to <br />' Total Volume Pumped 53 Gal Avg Flow Rate 2 9 gpm <br /> Water Depth After Purging feet Time <br /> SAMPLING 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 /> 0938 204 1103 765 18 <br /> 0944 203 1097 768 36 <br /> 0950 203 1064 770 53 <br /> lr--0955 Sample <br />' Comments Purge water clear,no odor <br /> Duplicate <br /> Turbidity= 39 ntu <br /> 1 <br />