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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 /> ' QA/QC REPORT <br /> Attention: Mr. Patrick Fischer Date Analyzed: 11-01-96 <br /> ESPANA GEOTECHNICAL Matrix: Soil <br /> 502 Giuseppe Court, Suite 11 <br /> Roseville, CA 95678 <br /> Project : El 69-1/Lodi Rail/Multimodal Station <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 /> Matrix Blank ND ND ND ND <br /> PERCENT RECOVERIES <br /> Matrix Spike 102% 125% 108% 118% <br /> Matrix Spike 101% 128% 109% 120% <br /> Duplicate <br /> ppm=parts per million-mg.Kg-milligram per kilogram <br /> ND -Not detected. Compound(s)may be present at con"niration_c below the reporting limit. <br /> All surrogate recorerles were within 30%oT target values" <br /> Spikes&Spike Duplicates were each spiked with 250 ng BTEC standard. <br /> ANALYTICAL PROCEDURES <br /> BTEx--Benzene..toluene,ethylbenzene,and total xylene isomers(BTEX)are measured by extraction using EPA Method 5030 followed by analysis <br /> using EPA Method 8020 which utilizes a gas chromatograph(GC)equipped with a photoionization detector(PID). <br /> s;:&. - 11-11-96 <br /> b ratory Representative Date Reported <br /> FXCELCHEM ENVIR0NNJE\1rAL LABS 1S CERTIFIED BY T'rIE STATE OF CALIFORNIA <br /> DEPARTMENU OF HEALTH SERVICES ASA HAZAR DCMS u'ASfE TESITNO LABOPAT TRY <br /> tCerti6ca6on No.1760) <br /> f <br />