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Sparge, ,. Mobile <br /> Laboratory Division <br /> Mobile Laboratory Division <br /> Technology, Inc. Scientific Division <br /> With Automotion in Mind <br /> Metal (EPA Method 7421 ) <br /> MS / MSD Recoveries <br /> Attention: Mr. John Lynch Date Sampled: Oct. 28, 1993 <br /> Wright Environmental Services Date Received: Oct. 28, 1993 <br /> 1961 Hill View Way Date Analyzed: Nov. 1, 1993 <br /> Tracy, CA 95376 <br /> Project #: 4040-T Project Name: Tracy Auto Stereo <br /> Client ID: MS/MSD LAB ID: ST93-11-001 MS <br /> ST93-11-001 MSD <br /> Matrix: Soil Dilution: <br /> Sample Spike MS % MSD % % <br /> Element Conc. Conc. MS Recovery MSD Recovery RSD <br /> Lead (Pb) 4.8 5.0 5.4 MI 5.4 MI MI <br /> ppm=parte Per million — mgXg — milligram per Kilogram <br /> ND =Not Detected. Compound(s)may be present at concentrations below the detection limit. <br /> MI = Matrix Interference <br /> Nov 1, 1993 <br /> R. L.James, Principal Chemist Date Reported <br /> SPARGER TECHNOLOGY ANALYTICAL LABORATORY,INC.IS CERTIFIED BY THE STATE OF CALIFORNIA <br /> DEPARTMENT OF HEALTH SERVICES AS A HAZARDOUS WASTE TESTING LABORATORY <br /> i <br /> (Certification No.18161 <br /> 3050 Fite Circle. Suite 112 9 Sacramento, California 95827 9 (916) 362-8947 • FAX(916) 362-0947 <br />