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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 /> QA/OC REPORT <br /> Attention Mr Matt Taylor BTEX Analyzed 02-05-96 <br /> WALLACE-KUHL& ASSOCIATES Matrix Water <br /> 30501ndustnal Blvd <br /> West Sacramento CA 95691 <br /> Project 293803 <br /> Ethyl- Total <br /> Benzene Toluene benzene Xylenes <br /> PPB PPB PPB PPB <br /> Re ortina Ltrrut 05 05 05 05 <br /> QA/QC PARAMETER <br /> . Matrix Blank ND ND ND ND <br /> PERCENT RECOVERIES <br /> Matrix Spike 88% 88% 89% 89% <br /> Matrix Spike 104% 1047c 104% 106% <br /> Duplicate <br /> ppb=parts per billion=ugJL=microgram per Iter <br /> ND =Not dercc.Ied Compoundfs)may be present at concentrations below the reporting limit <br /> All surrogate recorenes were within 30%r of target values <br /> Spikes&Spike Duplicates were each spiked with 250 ng BTEC standard <br /> ANALYTICAL PROCEDURES <br /> BTEX-Benzene toluene erhl lbenzene and total xviene tsomers I BTEC)are measured hr extraction using EP4 Method X010 foilowCd by analysts <br /> using EPA Method 602 which uuitzes t gas chromatomph IC30 equipped with a phimionimtion detector SPU:)) <br /> D, cz�u 02-12-96 <br /> abotly <br /> totRep entative Date Reported <br /> 1 <br /> E`CCELCHEM FNViRONMENTAL LABS 5 CLRTIFIED 61 THE STATE OF L 1LIFORNIA <br /> DEPARTMENT OF HEALTH IzERVICES AS A HAZARDOUS WASTE TESTING LABORATORY <br /> {C.ertlfrcavon No 17601 <br />