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EXCELCHEM <br /> . ENVIRONMENTAL LABS <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 Vic Cherven TPHd Analyzed 07-11-96 <br /> 1017 26th Street Matrix Water <br /> Sacramento, CA 95816 <br /> Project 96006/Valley Motors <br /> TPHd <br /> PPB <br /> Reporting Limit 50 <br /> QA/QC PARAMETER <br /> Matrix Blank ND <br /> PERCENT RECOVEREES <br /> Laboratory Control Spike 82% <br /> Laboratory Control Spike Duplicate 82% <br /> ppb=parts per billion=ug/L=microgram per liter <br /> 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(lugh boding points)are measured by extraction using EPA Method 3510,followed by modified EPA <br /> Method 8015 with direct sample infection into a GC equipped with an FID <br /> 07-19-96 <br /> Lab story Representative Date Reported <br /> EXCELCHEM ENVIRONMENTAL LABS IS CERTIFIED BY THE STATE OF CALIFORNIA <br /> DEPARTMENT OF HEALTH SERVICES AS A HAZARDOUS WASTETESIING LABORATORY <br /> (Certification No.1760 2114) <br />