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ENVIRONMENTAL LABS <br /> 500 Giuseppe Court, Suite 9 w <br /> Roseville, CA 95678 <br /> Phone# (916) 773-3664 Fax# (916) 773-4784 <br /> QA/OC REPORT <br /> Attention Mr John Bowen Date Analyzed 12-20-95 <br /> SECOR Matrix Water <br /> 1734 34th Street <br /> Sacramento, CA 95816 <br /> Project N0005-001 <br /> Ethyl- Total <br /> Benzene Toluene benzene Xylenes <br /> PPB PPB PPB PPB <br /> Reporting Limit 05 05 05 0 5 <br /> QA/QC PARAMETER <br /> Matrix Blank ND ND ND ND <br /> PERCENT RECOVERIES <br /> Matrix Spike 101% 94% 94% 93% <br /> Matrix Spike 97% 90% 89% 88% <br /> Duplicate <br /> ppb = parts per billion = ug/L = microgram per liter <br /> ND = Not detected Compound(s) may be present at concentrations helow the reporting limit <br /> Ail surrogate recoveries were wrtb=30%of target values <br /> Spikes &Spice Duplicates were each spiked with 250 ng BTEX standard <br /> AIVAI.Y TICAL PROCEDURES <br /> E lEX-- Benzene toluene,ethylbenzent and total xylene isomers(BTFX)dr,- mtasurt-d b} extraction using LPA Method 5030 followed <br /> by analysts using EPA Method 602 which utilizes d gas chromatograph {GC tyutppcd with a phototont7ation detector (PID) <br /> 12-22-95 <br /> IC-ab ratory Representative Date Reported <br /> XCELCHEM ENVIRONMEN`A-—=-5 15-ER-�'_1 E` T`'=STATE 7)F=f L FORN n <br /> DEPARTMEN-CF HEALTH 5ERVICE5 tis A iAZ,+DCUS VAST=TESTING L BORA`3 <br /> �� cation Nz 75J <br />