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Date:9/18/97 <br /> Set up time:0900 <br /> 10 <br /> 'C Weather:Partly Cloudy <br /> Samplers:DEM/CJH <br /> F WELL # MW-4 <br /> HISTORIC CONCENTRATIONS: <br /> FLocation: <br /> Construction Depth: 15 ft.bgs. <br /> Construction:2 inch pvc/ <br /> Groundwater Zone: Measured Depth: 14.75' <br /> Purge Method:Grundfos Pump(2") <br /> Screened Interval: 10-15 ft.bgs. Pump Intake:—7.5' <br /> Sample Method: Disposable Bailer Depth to Water:5.01' <br /> R Sample Preservation Method:Ice Height of Water Column:9.74' <br /> Volume of one casing: 1.59 gallons <br /> Purge Start Date:9/18/97 <br /> Purge Start Time:0939 Purge calculations <br /> Discharge Rate: --1 gpm 9.74 ft.x.163 gals. / ft.x 3= <br /> Purge End Time:0945 4.76 gallons <br /> Time Gallons Temp.°C pH ECµs/cm Water clarity <br /> 9:41 2 25.91 8.65 381 Clear <br /> i <br /> `1 9:43 4 25.79 8.42 366 Clear <br /> 9:45 6 25.80 8.19 374 Clear <br /> F i <br /> L REQUIRED SAMPLE TIME CONTAINER,TYPE MTRATION? <br /> Fe+2 10:00 3 x 40 ml VOA <br /> PH,Conductivity,Chloride& poly <br /> Nitrate 500 ml Poly In the Lab <br /> Dissolved Methane,Dissolved CO2 3 x 40 mi VOA <br /> BTEX,Trimethylbenzene,TPHg 6 x 40 rnl VOA HCL <br /> TPHd 2 x 1 Liter Amber Glass <br /> Dissolved Mn 500 ml Poly In the Lab <br /> Heterotrophic Plate Count 125 ml Plastic Na Thiosulfate <br /> FIELD OBSERVATIONS(Well condition,repairs needed) <br /> F I <br /> PID reading when well cap opened:0.0 ppm Disposal method of purge water: Drummed on site. <br /> i <br /> D.O. reading(mg/1):5.44,7.73,5.31 Decontamination procedure:Alconox/DI Rinse <br /> Redox Measurement(mV): 159, 161,163 <br /> Other notes:Used voa vials that had contained HCI to collect samples p s for dissolved Methane and CO2,but triple <br /> rinsed containers prior to sampling. <br /> _ Sampler Signature(s) : �0 T <br /> 211 _ <br />