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rAA <br /> EXCELCHEM <br /> t�. ENVIRONMENTAL LABS <br /> s:, <br /> t' 500 Giuseppe Court, Suite 9 <br /> a <br /> ! Roseville, CA 95678 <br /> Phone#: (916) 773-3664 Fax#: (916) 773-4784 <br /> 1;1 OA/OC REPORT <br /> Attention: Mr. Noel Lerner Date Analyzed: 01-06-97 <br /> Helmick&Lerner, Inc. Matrix: Soil <br /> 1620 Executive Court <br /> Sacramento, CA 95864 <br /> Project: 00811/Stockton Unified School District <br /> TPHd <br /> PPM <br /> Reporting Limit: _ 1.0 <br /> QA/QC PARAMETER T <br /> Matrix Blank ND <br /> PERCENT RECOVERIES <br /> Matrix Spike 89% <br /> Matrix Spike Duplicate 84% <br /> ppm=parts per million=mg/Kg=milligram per kilogram <br /> ?1 ND=Not detected. Compound(s)may be present at concentrations below the reporting limit. <br /> Spikes&Spike Duplicates were each spiked with 5000 ug of diesel standard. <br /> ANALYTICAL PROCEDURES <br /> - TPHd--Total petroleum hydrocarbons as diesel(high boiling points)are measured by extraction using EPA Method 3550,followed by modified EPA <br /> Method 8015,with direct sample injection into a CTC equipped with an FID. <br /> 3 <br /> -:1 <br /> 'd <br /> 01-07-97 <br /> Lab atory Representative Date Reported <br /> EXCELCI TEM ENVIRONMENTAL LABS IS CERTIFIED BY THE STATE OF CALIFORNIA <br /> _ DEPARTMENT OF HEALTH SERVICES AS A HAZARDOUS WASTE TESTING LABORATORY <br /> (Certification No.1760,2119) <br />