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�i EXCELCHEM <br /> I ENVIRONMENTAL LABS <br /> 500 Giuseppe Court, Suite 9 <br /> Roseville, CA 95678 <br /> Phone#: (916) 773-3664 Fax#: (916) 773-4784 <br /> E QA/QC REPORT <br /> , <br /> - Attention: Mr. John Bower BTEX Analyzed : 07-27-96 <br /> SECOR Matrix: Soil <br /> 1734 34th Street <br /> Sacramento, CA 95816 <br /> Project: Jo710-001-01 <br /> Ethyl- Total <br /> Benzene Toluene benzene Xylenes <br /> I PPM PPM PPM PPM <br /> Pwporting Limit: 0.005 0.005 0.005 0.005 <br /> >, QA/QC PAF AMRTFR <br /> Matrix Blank ND ND ND ND <br /> PERCENT RECOVERIES <br /> II Matrix Spike 103% 102% 101% 101% <br /> Matrix Spike 106% 105% 103% 104% <br /> Duplicate - <br /> ppm a parts per ffMon Q mg/Kg=milligram per kilogram <br /> ND =Not detected. ConVound(s)may be present at oomentrations below the reporting limit <br /> All sorroffate recoveries were wlddn 30%of target values. <br /> SpUm&Spike Duplicates were each spiked with 250 ng BTEX standard. <br /> iANALYTICAL PROCEDURES <br /> BTEX—Benzene,toluene,cthylbavine,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 /> e <br /> 07-30-96 <br /> torypresentative Date Reported <br /> I <br /> RCC ELCHEM ENVIRONMENTAL LABS ISCFRTIFiED BY THE STATE OF CALFORNIA <br /> 4 r DEPARTMENT OF HEALTH SERVICES AS A MZARDOLIS WASTE TESTING IABORATORY <br /> t (CMrfie tion N%1760,2119) - ,- <br />