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MONITORING WELL SAMPLING DATA <br />' Protect Name Stockton Maintenance Sta Protect Number 58475-06-24C <br />' Well No MW-9 Date 12/12/02 <br /> Well Diameter 4 in Field Personnel JE/DW <br /> ' Casing Length 78 04 feet Screened Casing Length NA <br /> [:Well Elevation 20 80 feet above MSL <br /> PURGE CHARACTERISTICS <br /> ' Water Depth Before Purging 51 41 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 17 38 Gal Volumes Purged 3 0 <br /> ' Start Purging Time 0846 End Purging Time 0902 <br /> Total Time 16 min Flow Gauge to <br /> ' Total Volume Pumped 53 Gal Avg Flow Rate 3 3 gpm <br /> Water Depth After Purging feet Time <br /> SAMPLING 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 /> (OC) (umhos/cm) Purged <br /> 0851 174 560 674 18 <br /> ' 0856 193 535 699 36 <br /> 0902 195 529 700 53 <br /> IL- <br /> 0910 Sample <br /> Comments Purge water clear, no odor <br /> ' Turbidity= 23 ntu <br /> • <br /> 1 <br />