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L Sparger Analytical Laboratory Division <br /> Mobile Laboratory Division <br /> Technology, Inc. Scientific Division <br /> With Automation in Mina <br /> EPA Method 7420 <br /> Lead <br /> MS / MSD Recoveries <br /> ' Attention: Mr. Charles Metzinger Date Sampled: Apr 14, 1998 <br /> EMCON Date Received: Apr 14, 1998 <br /> ' 1433 North Market Blvd. Date Analyzed: Apr 21, 1998 <br /> Sacramento, CA 95834 Invoice# : 9349APR98 <br /> Project#: 20939-011-001 Project Name: San Joaquin Cty-DAW <br /> ' Client ID: MS/MSD LAB ID: 9349-001A <br /> ' Matrix: Water Dilution 1 1 <br /> Units: (mg/1) <br /> ' Sample Spike MS % MSD % % <br /> Analyte Conc. Conc. MS Recovery MSD Recovery RSD <br /> ' Lead ND 10.0 9.19 91.9% 9.11 91.1% 0.87°/% <br /> ppm=parts per million=hi=milligram per liter <br /> NO=Not Detected Compound(s)may be present at concentrations below the beeptich limit. <br /> Apr 22, 1998 <br /> 4fteosa, Inorganics Supervisor Date Reported <br /> ' SPARGER TECHNOLOGY ANALYTICAL LABORATORY,INC.IS CERTIFIED BY THE ST TE OF CALIFORNIA <br /> DEPARTMENT OF HEALTH SERVICES AS A HAZARDOUS WASTE TESTING LABORATORY <br /> (Certification No.1614) <br /> 1 <br /> 7420msw <br /> 1 3050 Fite Circle, Suite 112 • Sacramento, California 95827 9 (916) 362-8947 • FAX (916) 362-0947 <br />