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EXCELCHEM <br /> ENVIRONMENTAL LABS <br /> am . <br /> 500 Giuseppe Court, Suite 9 <br /> Roseville, CA 95678 <br /> Phone#: (916) 773-3664 Fax#: (916) 773-4784 <br /> OA/OC REPORT <br /> Attention: Mr. Noel Lerner Date Analyzed: 09-22-97 <br /> Helmick&Lerner, Inc. Matrix: Water <br /> 1620 Executive Court <br /> Sacramento, CA 95864 <br /> Project: 00815/Stockton Unified <br /> LCS/LCSD RECOVERIES Unit=mg\L <br /> EPA Spike LCS% LCSD% % <br /> Element Method Conc. Recovery Recovery RPD <br /> Cr 7190 1 127% 134% 5% <br /> Samples were eulacted using Title 22,WET. <br /> ppm=parts per million=mg/L=milligrams per liter. <br /> ND =Not detected. Compound(s)may be present at concentrations below the reporting limit. <br /> 09-24-97 <br /> r ory Rep ative Date Reported <br /> EXCELCHEM ENVIRONMENTAL LABS IS CERTIFIED BY THE STATE OF CALIFORNIA <br /> DEPARTMENT OF HEALTH SERVICES AS A HAZARDOUS WASTE TESTING LABORATORY <br /> (Cerdfintlon No.2119) <br /> 2 <br />