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� _ �R w Date 12/17/96 <br /> a,� <br /> Setup time 08 05 <br /> c�b EQa3 $ pc \ 6 %� ��3SgQ 2gE S' 2 ^aa�ai <br /> Weather Fogg' <br /> t WU" x •00 A Samplers DEM/CJH <br /> WELL # MW-4 <br /> HISTORIC CONCENTRATIONS <br /> Location Construction Depth 15 ft bgs <br /> Construction 2 inch pvc/ Measured Depth 14 72' <br /> Groundwater Zone Pump Intake <br />' Screened Interval 10-15 ft bgs <br />' Purge Setting Discharge / Refill Depth to Water 4 74' <br /> Sample Setting Discharge Height of Water Column 9 98 <br /> Volume of one casing 163 gallons <br /> Packer Pressure <br /> Purge Start Time 08 51 Purge calculations <br /> Discharge Rate 1 gpm 9,98 ft x 163 gals / ft x 3 = <br /> Purge End Time 08 57 4 48 gallons <br /> Time Gallons Temp°F pH EC Water clarity <br /> 853 2 565 785 850 Clear <br /> 855 4 599 792 860 Clear <br /> 857 6 603 772 840 Clear <br /> ANALYSES REQUIRED SAMPLE TIME CONTAINER TYPE FILTRATION? <br />' See MW-1 9 20 <br /> and <br />' Heterotrophic Plate Count 125 ml Poly Na Thiosulfate <br />' FIELD OBSERVATIONS(Well condition,repairs needed) <br /> 1 <br /> PID reading when well cap opened 0 0 ppm Disposal method of purge water Drummed on site <br /> Dissolved Oxygen reading 185 mg/l Decontamination procedure Alconox/DI Rinse <br /> Redox Measurement 132 mV <br />' Other notes <br /> Sampler Signature(s) <br />