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EXC E LC H E M <br /> ENVIRONMENTAL LABS <br /> • 500 Giuseppe Court, Suite 9 <br /> Roseville, CA 95678 <br /> Phone# (916) 773-3664 Fax# (916) 773-4784 <br /> QA/ C REPORT <br /> Attention Vic Cherven BTEX Analyzed 07-11,12-96 <br /> Upgradient Environmental Matrix Soil <br /> 1017 26th Street <br /> Sac, CA 95816 <br /> Project# 96006 <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 BIank ND ND ND ND <br /> PERCENT RECOVERIES <br /> Matrix Spike 106% 106% 106% 109% <br /> Matrix Spike 103% 102% 100% 100% <br /> Duplicate <br /> ppm=parts per million=mg/Kg=milligram per lalogram .' <br /> ND =Not detected Compound(s)may be present at concentrations below the reporting limit. <br /> All surrogate recoveries were within 30%of target values. <br /> Spikes&Spine Duplicates were each spiked with 250 ag BTEX 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 utslizes a gas chromatograph(GC)equipped with a photoiomzation detector(PID) <br /> 07-15-96 <br /> La&katory Representative Date Reported <br /> • <br /> EXCELCHEM ENVIRONMENTAL LABS 1S CERTIFIED BYTHE STATE OF CALIFORNIA <br /> DEPARTMENTOF HEALTH SERVICES ASA HAZARDOUS WASTE TESTING LABORATORY <br /> (Catficabon No 1760) <br />