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819 Striker Avenue,Suite 8 <br /> Sequoia Sacramento, CA 95834 x) <br /> (9t6) 921-9600 <br /> irAnalytical FAX(916)921-0 100 <br /> SECOR International- Sacramento Project: ARCO 4493,Stockton,CA Sampled: 9/24/99 <br /> 9912 Business Park Dr., Ste. 100 Project Number: 077.41844.012 Received: 9/24/99 <br /> Sacramento,CA 95827 Project Manager: Rusty Benkosky Reported: 10/8/99 <br /> Volatile Organic Compounds by EPA Method 8260A <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits Limit Result Units =Nts:- <br /> MWZ(continued) 5909367-02 Water <br /> 1,1,1,2-Tetrachloroethane 9090297 9/28/99 9/28/99 2.00 ND ug/1 <br /> 1,1,2,2-Tetrachloroethane 2.00 ND " <br /> Tetrachloroethene 2.00 ND " <br /> Toluene 2.00 ND " <br /> 1,2,3-Trichlorobenzene 2.00 ND " <br /> 1,2,4-Trichlorobenzene 2.00 ND " <br /> 1,1,1-Trichloroethane 2.00 ND <br /> 1,1,2-Trichloroethane 2.00 ND <br /> Trichloroethene 2.00 54.4 " <br /> Trichlorofluoromethane 5.00 ND " <br /> 1,2,3-Trichloroprepane 2.00 ND " <br /> 1,2,4-Trimethylbenzene 2.00 ND <br /> 1,3,5-Trimethylbenzene 2.00 ND <br /> achloride " 2.00 ND <br /> Xylenes 2.00 ND <br /> Surrogate: Dibromofluoromethane 70.0-130 114 % <br /> Surrogate: 1,2-DCA-d4 70.0-130 112 <br /> Surrogate: Toluene-d8 70.0-130 <br /> Surrogate: 4-BFB 70.0-130 88.8 <br /> equoia Analytical-Sacramento 'Refer 10 end of report for text of notes and definitions. <br /> Page 6 of 14 <br />