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EXCELCHEM <br /> ENVIRONMENTAL LABS <br /> 500 Giuseppe Court, Suite 9 0 <br /> Roseville, CA 95678 <br /> Phone# (916) 773-3664 Fax# (916) 773-4784 <br /> QA/QC REPORT <br /> Attention TPHd Analyzed 06-27 -96 <br /> Matrix Water <br /> Project <br /> TPHd <br /> PPB <br /> Reporting L1mlt 50 <br /> QA/QC PARAMETER _ <br /> Matrix Blank ND <br /> PERCENT RECOVERIES <br /> Laboratory Control Spike 117% <br /> Laboratory Control Spike Duplicate 109% <br /> ppb=parts per billion=ug/L=microgram per Iger <br /> ND=Not detested. Compound(s)may be present at concentrations below the reporting lural. <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 3510,followed by modified EPA <br /> Method 8015 with direct sample injection into a GC equipped with an FID <br /> I <br /> 06-28-96 <br /> abo story Representative Date Reported <br /> 0 <br /> EXCELCHEM ENVIRONMENTAL LABS IS CERTIFIED BY THE STATE OF CALIFORNIA <br /> DEPARTMENT OF HEALTH SERVICES AS A HAZARDOUS WASTE TESTING LABORATORY <br /> (CertiRcskion No.1760) <br />