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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/QC REPORT <br /> Attention: Mr. Vic Chernen Date Analyzed 11-16-95 <br /> UPGRADIENT Matrix Soil <br /> 3369 Kimberly Road <br /> Cameron Park, CA 95628 <br /> Project : 95026 / 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 84% 85% 83% 84% <br /> Matrix Spike 87% 89% 88% 89% <br /> Duplicate <br /> ppm = parts per million = mg/Kg = milligram per kilogram <br /> ND = blot detected Compound(s)may be present at concentrations below the reporting limit <br /> All surrogate recoveries were within 30%of target values. <br /> Spikes&Spike Duplicates were each spiked with 250 ng BTIEX standard. <br /> ANALYTICAL PROCEDURES <br /> B1EX—Benzene,toluene,ethylbenzene,and total xylene isomers($TEX)are measured by extraction using EPA Method 5030 followed <br /> by analysts using EPA Method 8020 which utilizes a gas chromatograph (GC) equipped with a phototonzzatton detector(PID) <br /> 11-16-95 <br /> b atory Representative Date Reported <br /> EXCELCHEM ENVIRONMENTAL.LABS t5 CERTIFIED BY TwE STATE OF CALIFORNIA <br /> DEPARTMENT OF HEALTH SERVICES AS A HAZARDOUS VVASTE TESTING LABORATORY <br /> (Certification No 1760) <br />