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BROWN & ROOT ENVIRONMENTAL <br /> GROUNDWATER SAMPLE COLLECTION RECORD <br /> Site Name E-Z Serve #100966 Job # MY47 <br /> Location 2537 Waterloo Road, Stockton, CA Date 9117196 <br /> Samplers R Roberts, V Millar Well ID MW-4 <br /> Weather Hot and sunny <br /> WATER COLUMN INFORMATION (ft } [1] <br /> a Depth to Water 5971 TOC Elevation 9592 <br /> b Total Well Depth 9013 Water Table Elevation 36 21 <br /> c Height of water column 3042 Well Diameter 4" <br /> d Well Casing Volume (gals) 20 <br /> e Well Screen Length 20 I[1] All datum are relative to a <br /> f TOTAL WELL VOLUME measurment point located on <br /> the TOC <br /> WELL PURGING DATA <br /> a Purge Method 2" Grundfros Redi-Flow submersible pump <br /> b Purge Vol (@ gal per well vol } 60 gal (3x well volume) <br /> c Field Water Quality Monitoring Equipment Accumet 1002 pH, Hanna H18733 cond meters <br /> d Pump Flow Rate (gpm) 3 5 <br /> e Method of Purge Water Disposal 17-H - 55 gallon drums <br /> I <br /> Volume Specific <br /> Removed(gal } Time T°c pH Conductance Description Odor Comments <br /> 7 1757 22 7 03 1 18 clear sit fuel-like <br /> 20 1802 22 7 13 1 13 clear sit fuel-like <br /> 30 1803 22 7 16 1 12 clear sit fuel-like <br /> 45 1807 22 7 18 1 11 clear sit fuel-like <br /> 55 1811 22 7 17 1 10 clear sit fuel-like <br /> 63 1813 22 7 17 1 1 10 clear sit fuel-like <br /> Sample 1823 <br /> SAMPLE COLLECTION METHOD <br /> Method Disposable Teflon Bailer <br /> Sample Containers 40 ml VOA vials <br /> Sample Preservation HCL and ICE to 4 degrees centigrade <br /> Analyses EPA Method 8020 + MTBE, EPA Method 8015 mod - TPHg <br /> Laboratory Centrum Analytical Laboratories, Inc located in Redlands, CA <br /> COMMENTS <br />