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lM <br /> EXCELCHEM <br /> ENVIRONMENTAL LABS <br /> 500 Giuseppe Court, Suite 9 ° <br /> I Roseville, CA 95678 <br /> 1 Phone#: (916) 773-3664 Fax#: (916) 773-4784 <br /> i <br /> OA/OC REPORT <br /> i <br /> Attention: Mr. Noel Lerner Date Analyzed: 01-03-97 <br /> Helmick&Lerner, Inc. Matrix: Soil <br /> 1620 Executive Court <br /> Sacramento, CA 95864 <br /> k' Project: 00811/Stockton Unified School District <br /> i- <br /> Lead <br /> PPM <br /> Reporting Limit: 2.5 <br /> QA/QC PARAMETER <br /> Matrix Blank ND <br /> PERCENT RECOVERIES <br /> Matrix Spike 91% <br /> Matrix Spike Duplicate 97% <br /> - Laboratory Control Spike 95% <br /> .i <br /> Laboratory Control Spike Duplicate 88% <br /> ?A ppm=parts per million=mg/Kg=milligram per kilogram <br /> N13=Not detected Compound(s)may be present at concentrations below the reporting linlit. <br /> I ANALYTICAL PROCEDURES <br /> Lead--is measured by digestion using EPA Method 3050,followed by EPA Method 7420. <br /> 01-07-97 <br /> La 'ora ry Repre entative Date Reported <br /> i' <br /> EXCELCHEM ENVIRONMENTAL.LABS IS CERTIFIED BY THE STATE OF CALIFORNIA <br /> DEPARTMENT OF HEALTH SERVICES AS A KAZARDOUS WASTE TESTING LABORATORY <br /> (C�rliGualion No.1760,2119) <br />