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Date:9/19/97 <br /> Set up time:0950 <br /> Weather:Clear <br /> �f Samplers:DEM/CJH <br /> WELL # MW-1 <br /> HISTORIC CONCENTRATIONS: <br /> Location: Construction Depth:25 ft.bgs. <br /> Construction:2 inch pvc/ Measured Depth:21.40' <br /> Groundwater Zone: Purge Method:Grundfos Pump(2") <br /> Screened Interval:4-24 ft.bgs. Pump Intake: -9' <br /> Sample Method:Disposable Bailer Depth to Water:6.06' <br /> Sample Preservation Method:Ice Height of Water Column: 15.34' <br /> Volume of one casing:2.50 gallons <br /> Purge Start Date:9/19/97 <br /> Purge Start Time: 1002 Purge calculations <br /> Discharge Rate: --1 gpm 15.34 ft.x.163 gals. / ft.x 3 <br /> e <br /> Purge End Time: 7.50 gallons <br /> Time Gallons Temp.°C pH ECµs/cm Water clarity <br /> 10:04 2 26.15 7.55 425 Turbid <br /> 10:07 4 25.58 8.28 435 Turbid <br /> 10:11 6 25.61 8.60 440 Turbid <br /> 10:13 8 25.36 8.72 440 Clear <br /> ANALYSES REQUIRED SAMPLE TIME CONTAINER TYPE FILTRATION? <br /> Fe+2 10:30 3 x 40 ml VOA <br /> pH,Conductivity,Chloride& <br /> Nitrate 500 ml Poly In the Lab I <br /> Dissolved Methane,Dissolved CO2 3 x 40 ml VOA <br /> BTEX,Trimethylbenzene,TPHg 6 x 40 ml VOA HCL <br /> TPHd 2 x 1 Liter Amber Glass <br /> Dissolved Mn 500 ml Poly In the Lab 3 <br /> FIELD OBSERVATIONS(Well condition,repairs needed) <br /> PID reading when well cap opened:0.0 ppm Disposal method of purge water:Drummed on site. <br /> D.O. reading(mg/1): 1.65, 1.12,1.79, 1.98 Decontamination procedure:Alconox/DI Rinse <br /> I <br /> Redox Measurement(mV):-44,-10,9,20 Other notes:After pumping 5 gallons well had drawn down enough to lower pump 2.5'to get flow again. <br /> Sampler Signature(s) : 0 J <br />