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CATZLLlTSIEVELpI�fi� N7'G©Rl'ORATION Date 12/1/97 <br /> WEST WEBER SITE,STOCKTON Setup time 1220 <br /> QUARTERLY GROUNDWATER SA114PLING Weather Clear <br /> • FIELD NOTES/ERM WEST 2996 00 Samplers DEM/C)H <br /> WELL # MW-1 <br /> HISTORIC CONCENTRATIONS <br /> Location Construction Depth 25 ft b s <br /> Construction 2 inch pvc/ Measured Depth 2129' <br /> tGroundwater Zone Purge Method Grundfos Pump (2") <br /> Screened Interval 4-24 ft bgs Pump Intake <br /> Sample Method Disposable Bailer Depth to Water 5 78' <br /> Sample Preservation Method Ice Height of Water Column 15 51' <br /> Volume of one casing 2 53 gallons <br /> Purge Start Date 12/1/97 <br /> Purge Start Time 1258 Purge calculations <br /> Discharge Rate -1 gpm 15 51 ft x 163 gals / ft x 3= <br /> Purge End Time 1307 7 58 gallons <br />' Time Gallons Temp°C pH EC Ns/cm Water clarity <br /> 1300 2 2296 783 746 Clear <br /> 1302 4 2336 798 742 Clear <br /> 1305 6 2667 809 718 Clear <br /> 1307 8 2372 812 699 Clear <br />' ANALYSES REQUIRED SAMPLE TIME CONTAINER TYPE FILTRATION? <br /> Fe+ 2 3 x 40 ml VOA HCL <br /> pH,Conductivity,Chloride 500 mI Poly <br />' Nitrate 500 ml Poly <br /> Dissolved Methane,Dissolved CO2 3 x 40 ml VOA <br /> BTEX,TrimethyIbenzene,TPHg 8 x 40 ml VOA HCL <br />' TPHd 2 x 1 Liter Amber Glass <br /> Dissolved Mn 500 ml Poly HNO3 In the Field <br /> FIELD OBSERVATIONS(Well condition,repairs needed) <br /> 1 <br />' PID reading when well cap opened NA Disposal method of purge water Drummed on site <br /> DO readings (mg/1) 212,1 46, 0 83,0 87 Decontamination procedure Alconox/DI Rinse <br />' Redox Measurement(mV) 350,349,345,345 <br /> Other notes Collected duplicates on all analyses except dissolved Mn(MW-1D at 1325) <br /> Si <br /> Sampler ature s - <br /> P Zm { <br />