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1 <br /> MONITORING WELL SAMPLING MA'Y'A. <br /> �=PrqjectName STOCKTON YARD TProject Number 58100-06-62 <br />' Well No MW-1 Date 4/23/96 <br /> Well Diameter 4 in Field Personnel 1M/BL <br /> Casing Length 76 feet Screened Casing Length --- <br /> Well Elevation feet MSL measured from <br /> iPURGE CHARACTERISTICS <br />' Water Depth Before Pumping 60 98 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 9 8 Gal Volumes Purged <br /> Start Pumping Time 0924 End Pumping Time 0936 <br /> Total Time 12 min Flow Gauge 22594 to 22624 <br /> Total Volume Pumped 30 Gal Avg Flow Rate 2 5 gpm <br /> Water Depth After Pumping 6369 feet Time 0936 <br /> SAMPLING CHARACTERISTICS <br />' Sampling Method disposable bailer <br /> Laboratory Analysis TPHg, TPHd,BTEX,MTBE <br />' TIME TEMPERATURE CONDUCTIVITY pH Gallons <br /> (°F) (umnos/cm) Purged <br />' 0928 692 1146 713 10 <br /> 0932 697 1149 726 20 <br />' 0936 691 1183 701 30 <br />' 0942 sample <br />' comments <br /> Draw Down 2 71 ft <br />' o Recovery 80%=61 52' <br /> sample @ 61 51 ft= 80% Recovery <br />