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i BROWN & ROOT ENVIRONMENTAL <br /> GROUNDWATER SAMPLE COLLECTION RECORD <br /> Site Name E-Z Serve #100966 .lob # MY47 <br /> Location 2537 Waterloo Road, Stockton, CA Date 9117196 <br /> Samplers R Roberts, V Millar Well ID MW-2 <br /> Weather Hot and sunny <br /> WATER COLUMN INFORMATION (ft } [1] <br /> a Depth to Water 5984 TOC Elevation 9602 <br /> b Total Well Depth 9034 Water Table Elevation 36 18 <br /> c Height of water column 305 Well Diameter 4" <br /> d Well Casing Volume (gals) 20 <br /> e Well Screen Length 20 [1] All datum are relative to a <br /> f TOTAL WELL VOLUME measurment pant 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 coed meters <br /> d Pump Flow Rate (gpm) 3 <br /> e Method of Purge Water Disposal 17-H - 55 gallon drums <br /> Volume Specific <br /> Removed 1 al} Time T°c pH Conductance Description Odor Comments <br /> 4 1713 22 7 10 1 37 clear no <br /> 13 1715 22 7 12 1 35 clear no <br /> 22 1719 22 7 11 1 33 clear no <br /> 25 1721 22 7 15 1 33 clear no <br /> 43 1725 22 7 15 1 32 clear no <br /> 56 1729 22 7 15 1 32 clear no <br /> 67 1734 22 7 15 1 32 clear no <br /> Sample 1749 <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 />