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WISet <br /> ane <br /> Sequoia 40"N .CA `598 - <br /> Walnut Deck.CA 94598 <br /> 4 (925)988-9600 <br /> TQ4D- Analytical FAX(925)988-9673 <br /> Gettler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite J Project Number- Unocal#4409 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 17-Jan-00 09 02 <br /> Volatile Organic Compounds by EPA Method 8260A - Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lrmtt Units Level Result %REC Lututs RPD Lizmt Notes <br /> Batch OA11011. Prepared 07-Jan-00 Usmg EPA 5030B TPM <br /> Blank(OA11011-BLKI) <br /> Ethanol ND 500 ug/1 <br /> tert-Butyl alcohol ND 100 <br /> Methyl tort-butyl ether ND 20 " <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tort-butyl ether ND 20 " <br /> 1,2-Dichloroethane ND 20 " <br /> tent-Amyl methyl ether ND 20 " <br /> Ethvlene dibromide ND 20 <br /> Surrogate Dibromofluorornerhane 540 500 108 50-150 <br /> Surrogaie 1 1 Dichloroethane-0 S20 SO 0 104 50-150 <br /> LCS(OAI 1011-BSI) - <br /> Methyl tent-butyl ether 409 20 ug/I 500 81 8 70-130 <br /> Surrogate Dtbromofluoromethane 470 Soo 940 50-150 <br /> Surrogate 11 Dichloroethane-d4 450 Soo 900 50-150 <br /> LCS Dup (OA1101I-BSD1) <br /> Methyl tert-butyl ether 397 20 ug/1 500 794 70-130 299 200 <br /> Surrogate Dibrornofluoromethane 430 Soo 86.0 50-150 <br /> Surrogate 1 1-Dichloroethane-d4 410 SO 0 820 so-Iso <br /> Matnx Spike(OA11011-MSI) Source W001025-06 <br /> Methyl tert-butyl ether 476 20 ugll 500 ND 952 60-150 <br /> Surrogate Dibromofluoromethanr 410 500 820 50.150 <br /> Surrogate I 1-Dichloroethane-d4 340 Soo 68.0 50-150 <br /> Matrix Spike Dup(OA11011-NISDI) Source W001025-06 <br /> Methyl tert-butyl ether 355 20 ug/1 500 ND 710 60.150 29 I 25 Q-07 <br /> Surrogate Dibromofluoromethane 400 Soo $00 50450 <br /> Surrogate I 2-Dichloraethane-d4 330 50:0 660 50.150 <br /> Sequoia Analytical-Walnut Creek The results in rims report apply to the samples analyzed in accord's ice with the chain of f <br /> custody document Tins analytical report must be reproduced in i is emirwy <br /> 1 <br /> Alan B Kemp,Labohtary Vmctor Page 7 of 8 <br />