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MONITORING WELL SAMPLING DATA <br /> r <br /> t Name Stockton Yard Project Number 58100-06-1 I B <br /> o MW-7 Date 02/06/96 <br /> iameter 4 in Field Personnel IM/DW/BL <br /> Casing Length 75 60 feet Screened Casing Length 15 ft <br /> ' Well Elevation feet MSL measured from <br /> ' PURGE CI-dARACTERISTICS <br />' Water Depth Before Pumping 62 55 ft 2 in= 1632 Ga!/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 8 Gal Volumes Purged 3 <br /> Start Pumping rime 1150 End Pumping Time 1208 <br /> notal rinse 18 min Flow Gauge 20514 to 20538 <br /> Iota] Volume Pumped 22 Gal Avg Flow Rate 1 5 gpm <br />' Water Depth After Pumping 65 59 feet Tune 1215 <br /> SAMPLING CIIARAC <br /> TERISTICS <br /> Sampling Method Disposable Bailer <br /> Laboratory Analysts TPHg/BTEX/MT BE/TPHd <br />' TIME TEMPERATURE CONDUCTIVITY ;'PH '`'�i Gallons <br /> k <br /> Purged <br /> 1155 726 675 610 8 <br /> 1205 71 5 505 599 16 <br /> 1213 725 457 6 18 24 <br /> comments Water is clear, slight odor, well pumped dry after 10 gallons <br /> 1 62 55 a 1340= 100% recovery <br /> I <br />