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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 /> OA/OC REPORT <br /> Attention Mr John Bower BTEX Analyzed 07-15-96 <br /> SECOR Matrix Soil <br /> 1734 34th Street <br /> Sacramento, CA 95816 <br /> Project JoT10-002-01 <br /> Ethyl- Total <br /> Benzene Toluene benzene Xylenes <br /> PPM PPM PPM PPM <br /> Reporting Limit 0 005 0 005 0 005 0 005 <br /> QA/QC PARAMETER <br /> IMatrix Blank ND ND ND ND <br /> PERCENT RECOVERIES <br /> Matrix Spike 1100/0 111% 111% 115% <br />' Matrix Spike 108% 1090/0 1090/0 111% <br /> Duplicate <br /> I 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 /> All <br /> imitAll surrogate recoveries were within 30%of target values. <br /> I Spikes etc Splke Duplicates were each spiked with 250 ng$TEx standard <br /> ANALYTICAL PROCEDURES <br /> BTEX—Benzene,toluene ethylbenzene,and totet xylene isomers(BTEX)are measured by eximch n using EPA Method 5030 followed by analysts <br /> using EPA Method$020 which utilizes a gas chromatograph(GC)equipped with a photoionizatLon detector(PID) <br /> 07-25-96 <br /> 5atory resentative Date Reported <br /> I <br /> EXCELCHEM ENVIRONMENTAL LABS IS CERTIFIED BY THE STATE OF CALIFORNIA <br /> DEPARTMENT OF HEALTH sERVICEs AS A HATARDOVS WASTE TESTING LABORATORY <br /> (Certification Na 1760 2119) <br />