Laserfiche WebLink
CATELLUS DEVELOPMENT CORPORATION Date 5/7/97 <br /> WEST WEBER SITE,STOCKTON Setup time 1100 <br /> QUARTERLY GROUNDWATER SAMPLING Weather Clear,Windy <br /> FIELD NOTES I ERM WEST 299600 Samplers DEM/CJH <br /> ' WELL # MW-5A <br /> HISTORIC CONCENTRATIONS <br /> ' Location Construction Depth 18 ft bgs <br /> Construction 4 inch pvc/ Measured Depth 17 69 <br /> ' Groundwater Zone Purge Method Grundfos Pump (2 ) <br /> Screened Interval 8-18 ft bgs Pump Intake —9' <br /> ' Sample Method Disposable Bailer Depth to Water 4 34 <br /> Sample Preservation Method Ice Height of Water Column 13 35 <br /> Volume of one casing 8 72 gallons <br /> ' Purge Start Date 5/7/97 <br /> Purge Start Time 1105 Purge calculations <br /> Discharge Rate —1 gpm 13 35 ft x 653 gals / ft x 3= <br /> ' Purge End Time 1134 2615 gallons <br /> Time Gallons Temp°C pH EC}is/cm Water clarity <br /> 1112 7 2192 675 2170 Clear <br /> 1119 14 2193 674 2093 Clear <br /> 1126 21 2197 673 2054 Clear <br /> 1134 28 2195 674 1983 Clear <br />' <br /> ANALYSES REQUIRED SAMPLE TIME CONTAINER TYPE FILTRATION7 <br /> Fe+2 1145 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,Trimethylbenzene,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 010 mg/1 Decontamination procedure Alconox/DI Rinse <br /> Redox Measurement 118 mV <br /> Other notes <br /> Sampler Signature(s) / <br /> 1 <br />