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MONI'T'ORING WELL SAMPLING DATA. <br /> Protect Name Stockton Maintenance Sta Protect Number S8475-06-24C <br />' Well No MW-4 Date 12/11/02 <br /> Well Diameter 4 in Field Personnel JE/DW <br /> Casing Length 73 04 feet Screened Casing Length NA <br /> LWeil Elevation 2198 feet above MSL <br /> PURGE CHARACTERISTICS <br /> Water Depth Before Purging 52 61 ft 2 in= 1632 GaVft 4 in = 6528 Gal/ft <br />' Calculated Water Column Volume 13 4 Gal Volumes Purged 3 0 <br /> 1 Start Purging Time 1259 End Purging Time 1312 <br /> Total Time 13 mm Flow Gauge to <br />' Total Volume Pumped 40 Gal Avg Flow Rate 3 1 gpm <br /> Water Depth After Purging feet :::d Time <br /> SAMPLEgG CHARACTERISTICS <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 /> 1304 198 500 685 13 <br />' 1308 205 502 679 26 <br /> 1312 203 503 679 40 <br /> 1 <br /> 1320 Sample <br /> Comments Purge water clear,no odor <br />' Turbidity <br /> :30 ntu <br />