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EXCELCHEM <br /> ENVIRONMENTAL LABS <br /> • 500 Giuseppe Court, Suite 9 <br /> Roseville, CA 95678 14 <br /> Phone# (916) 773-3664 Fax# (916) 773-4784 <br /> QA/4C REPORT <br /> Attention: Vic Chernen Date Analyzed 11-29-95 <br /> UPGRADIENT Matrix Water <br /> 3369 Kimberly Road <br /> Cameron Park, CA 45682 <br /> Project 95044 / J&L Market <br /> Ethyl- Total <br /> Benzene Toluene benzene Xylenes <br /> PPB PPB PPB PPB <br /> Reporting Limit 05 0.5 0.5 05 <br /> QA/QC PARAMETER <br />• Matrix Blank ND ND ND ND <br /> PERCENT RECOVERIES <br /> Matrix Spike 98% 95% 95% 94% <br /> Matrix Spike 105% 102% 101% 102% <br /> Duplicate <br /> ppb = parts per billion = ug/L = microgram per liter <br /> ND = Not detected Compound(s)may be present at concentrations below the reporting limit <br /> All surrogate racoverres were within 30%of target values <br /> Spikes&Spske Duplicates were each spiked with 250 ng BTEX standard. <br /> ANALYTICAL PROCEDURES <br /> fn'FX--Benzene,toluene,ethylbenzene,and total xylene isomers(BTEX)are measured by extraction using EPA Method 5030 followed <br /> by analysis using EPA Method 602 which utilizes a gas chromatograph (GC)equipped with a phototonLzatton detector(PID) <br /> 10-27-95 <br /> �Jratory Representative Date Reported <br /> ExCELCHEM ENVIRONMENTAL LABS IS CERTIFIED B,THE STATE OF CAtJFORNIA <br /> DEPART MENT OF HEALTH SERVICES AS A HAZARDOUS WASTE TF-STING tABORATGRv <br /> (Certification No 1760) <br />