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CATELLII5 DEVELOPMENT CORPORATION Date 5/6/97 <br /> WEST WEBER SITE,STOCKTON Setup time 1240 <br /> QUARTERLY GROUNDWATER SAMPLING Weather Clear,Windy <br /> FIELD NOTES/ERM WEST 2996 Dia Samplers DEM/CJH <br /> ' WELL # MW-3 <br /> HISTORIC CONCENTRATIONS <br /> Location Construction Depth 25 ft bgs <br /> Construction 2 inch pvc/ Measured Depth 19 43' <br /> Groundwater Zone Purge Method Grundfos Pump (2") <br /> Screened Interval 4-24 ft bgs Pump Intake —10' <br /> Sample Method Disposable Bailer Depth to Water 5 21' <br /> Sample Preservation Method Ice Height of Water Column 14 22 <br /> Volume of one casing 2 32 gallons <br /> Purge Start Date 5/6/97 <br /> Purge Start Time 1322 Purge calculations <br /> Discharge Rate —1 gpm 14 22 ft x 163 gals / ft x 3= <br /> Purge End Time 1333 6 95 gallons <br /> Time Gallons Temp°C pH EC gs/cm Water clarity <br /> 1326 3 2020 651 1307 Orange <br /> 1329 6 2033 653 1074 Clear <br /> 1332 9 2038 653 1056 Clear <br /> ANALYSES REQUIRED SAMPLE TIME CONTAINER TYPE FILTRATION? <br /> Fe+2 1355 2 x 40 ml VOA HCL <br />' pH,Conductivity,Chloride 500 ml Poly <br /> Nitrate 500 ml Poly H2SO4 In the Field <br /> Dissolved Methane,Dissolved CO2 2 x 40 ml VOA <br /> BTEX,Tnmethylbenzene,TPHg 4 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 /> PID reading when well cap opened 0 0 ppm Disposal method of purge water Drummed on site <br /> Dissolved Oxygen reading 0 16 mg/l Decontamination procedure Alconox/DI Rinse <br /> Redox Measurement -46 mV <br /> Other notes <br /> Sampler Signature(s) <br /> C <br />