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EXCELCHdill <br />ENVIRONMENTAL LABS <br />500 Giuseppe Court, Suite 9 <br />Roseville, CA 95678 <br />Phone#: (916) 773-3664 Fax#: (916) 773-4784 <br />()A./QC REPORT <br />Attention: Mr. Noel Lerner Date Analyzed: 01-03-97 <br />I� Helmick & Lerner, Inc. Matrix: Soil <br />1620 Executive Court <br />Sacramento, CA 95864 <br />Project: 00811/Stockton Unified School District <br />Lead <br />PPM <br />I' Reporting Limit: 2.5 <br />QA./QC PARAMETER <br />Matrix Blank ND <br />PERCENT RECOVERIES <br />I' Matrix Spike 91% <br />Matrix Spike Duplicate 97% <br />Laboratory Control Spike 95% <br />Laboratory Control Spike Duplicate 88% <br />ppm = parts per million = mg/Kg = milligram per kilogram <br />ND = Not detected. Compound(s) may be present at concentrations below the reporting limit. <br />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 Representative Date Reported <br />EYCELCHEM ENVIRONMENTAL LABS IS CERTIFIED BY THE STATE OF CALIFORNIA <br />DEPARTMENT OF HEALTH SERVICES AS A HAZARDOUS WASTE TESTING LABORATORY <br />(C.rtifitdion No. 1760, 2119) <br />