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Iento819 Striker Avenue Suite 8 <br /> Sequoia SacramcA9 <br /> (916)9z1-96009600 <br /> FAX(916)921-0100 <br /> Analytical www sequoialabs com <br /> SECOR International-Rancho Cordova Project Arco 6020,Manteca,CA <br /> Project Number N/A Reported <br /> 3017 Kilgore Road,Suite 100 Pro] <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 02/16/01 12 59 <br /> Volatile Oxygenate Compounds by EPA Method 8260A - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC P_PD <br /> Analyte Result limit Units Level Result %RFC Limits RPD Lmut Notes <br /> Watch 1020041 -EPA 5030B {MeOHJ <br /> lank(1020041-BLKI) Prepared&Analyzed 02/05/01 <br /> Tert-butyl alcohol ND 100 mg/kg <br /> ethyl cert-butyl ether ND 0 100 <br /> i-isopropyl ether ND 0 100 <br /> Ethyl tert-butyl ether ND 0 100 <br /> FIert-amyl methyl ether ND 0 100 " <br /> thanol ND 150 <br /> 1 2 Dichloroethane ND 0100 <br /> Ethylene dibromide ND 0 100 <br /> urrogate 1 2-DCA-d4 247 250 988 60-140 <br /> LCS(1020041-BS1) Prepared&Analyzed 02/05/01 <br /> Imterl-butyl ether 2 58 0 100 mg/kg 250 103 60-140 <br /> t ate 12 DCA d4 255 250 102 60-140 <br /> Matrix Spike(1020041-MSI) Source S102065-02 Prepared&Analyzed 02/05/01 <br /> 11methyl tert-butyl ether 2 52 0 100 mg/kg 250 ND 101 60-140 <br /> Surrogate 12-DCA-d4 2 43 1150 972 60-140 <br /> Matrix Spike Dup(1020041-MSD1) Source S102065-02 Prepared&Analyzed 02/05/01 <br /> Methyl tert butyl ether 2 53 0 100 mg/kg 250 ND 101 60-140 0 396 25 <br /> Surrogate 1 2-DCA d4 145 250 980 60-140 <br /> Batch 1020089-EPA 5030B McOH <br /> Blank(1020089-BLKI) Prepared 02/08/01 Analyzed 02/09/01 <br /> fMert-butyl alcohol ND 100 mg/kg <br /> ethyl ten butyl ether ND 0 100 <br /> Di-isopropyl ether ND 0 100 <br /> Ethyl tert-butyl ethei ND 0 100 <br /> Ter(-amyl methyl ether ND 0 100 <br /> )Ethanol ND 150 " <br /> 1 2 Dichloroethane ND 0 100 <br /> IEthylene dibromide ND 0 100 " <br /> Surrogate 12-DCA-d4 2 44 250 976 60-140 <br /> I <br /> ata Analytical- Sacramento "ie results in this report apply to the samples analyzed in accordance with the chain of <br />' custody document This analytical report must he reproduced in its enitrety <br />' ,p 19 of 21 <br />