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404 N Wiget Lane <br /> 4 Sequoia Walnut Creek CA 94598 <br /> (925)988-9600 <br /> Analytical <br /> FAX(925)988-9673 <br /> 7ttler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite 7 Project Number Unocal# 1205 Reported <br /> DuWin CA,94568 Project Manager Deanna L Harding 16-Nov-99 17 21 <br /> Volatile Organic Compounds by EPA Method 8260A - Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lurut Units Level Result %REC Lmuts RPD Limit Notes <br /> Batch 9KO2012 Prepares! 02-Nov-99 Using EPA 5030B [Pffl <br /> Blank(9K02012-BLK2) <br /> tert-Butyl alcohol ND 100 ug/l <br /> ?vlethyl tert-butyl ether ND 20 " <br /> Di isopropy 1 ether ND 20 " <br /> Ethyl tert-hutvl ether ND 20 <br /> tart-AmA methvl ether ND 20 <br /> Surrogate Dibroanoj7uorowelhane 630 500 116 50-150 <br /> Surrogate 1 2-Drchloroethane-d4 61 0 500 132 30-150 <br /> LCS(9K020l2-BS2) <br /> %lethvl tert but,,]ether 41 7 20 ug/l 500 934 70-130 <br /> %wrot,ate Drh,o»ra/luo,ornerhnn. 61 0 51)0 122 50-1.30 <br /> talc I2-Drchlaroethrwe-dl 600 500 110 X0150 <br /> t rn Spike (9KR2012-MSI) Sf UML W910421-02 <br /> Nlethvl tort hut%I ether 646 2(1 u1,1 500 ND 129 60 150 <br /> Surrugale Drhrurnufluummerhane 610 5110 132 _ )fx/50 <br /> Swrognlc 12-Drchlaroelhnlae-d4 640 500 128 )11-150 <br /> M ttnx Spike Dup (91(020t2-NISD1) Souris, W910421-02 <br /> %leth%l tell-hut%I ether 686 20 U61 500 ND 137 60 t 50 601 2� <br /> %wrogale Drbromofluuronralhom 63f) 5011 126 X0-150 -----_� <br /> Barra%afe 1 2-Drchtwoelhane d-1 6.511 5011 130 50-1.)0 <br /> I <br /> Scduoirl AnaNtieal -Walnut Creck Ihereurlrrfn liar rtporlrrpplylotJre unnplet emaly_edlnircorrluncelVrllrllar clrnnof <br /> uw(mIy drxurnent Ilex urralyncal apart numt be reprrxlnced rrr rlr enarert <br /> -It <br /> A �n tine a eev I-I jw t Mary* p rgt. 7 Lit 8 <br />