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i 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-1 <br /> Weather Hot and sunny <br /> WATER COLUMN INFORMATION (ft ) [11 <br /> a Depth to Water 5961 TOC Elevation 95 83 <br /> b Total Well Depth 9001 Water Table Elevation 3622 <br /> c Height of water column 304 Well Diameter 4" <br /> d Well Casing Volume (gals) 20 <br /> e Well Screen Length 20 [11 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 Redl-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 Gond meters <br /> d Pump Flow Rate 3 3 gpm <br /> e Method of Purge Water Disposal 17-H - 55 gallon drums <br /> i <br /> Volume Specific <br /> Removed( al ) Time TOc pH Conductance Description Odor Comments <br /> 15 1910 22 707 1 30 clear fuel-like <br /> 35 1915 22 7 20 1 29 clear fuel-like <br /> 45 1919 22 7 12 1 29 clear fuel-like <br /> 55 1922 22 7 12 1 29 clear fuel-like <br /> Sample 2001 <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 />