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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. Vic Chernen Date Analyzed 11-28-95 <br /> UPGRADIENT Matrix: Sall <br /> 3369 Kimberly Road <br /> Cameron Park, CA 95682 <br /> Project 95044 / J&L Market <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 99% 96% 95% 95% <br /> Matrix Spike 108% 106% 104% 106% <br /> Duplicate <br /> 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 surrogate recmertes were within 30%of target value& <br /> Sptkes&Spike Duphcates ware each spdwd with 250 ng BTEX standard <br /> ANALYTICAL PROCEDURES <br /> BTEX—Benzene,toluene,ethylbenzene,and total xylene isomers(BTEX)are measured by extraction using EPA Method 5030 Followed <br /> by analysis using EPA Method 8020 which utilizes a gas chromatograph (GC) equipped wrath a pholoiomzatton detector(PID) <br /> 12-04-95 <br /> bo <br /> atorylZepresentative Date Reported <br /> IS <br /> EXCEL-CHEM ENVIRONMENTAL LASS IS CERTIFIED BY THE STATE OF CALIFORNIA <br /> DEPARTMENT OF HFALTH SERVICES AS A HAZARDOUS WASTE TESTING LABORATORY <br /> (Certification No 1760) <br />