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Sequoia 1551]ndustnal Road <br /> ' San Carlos CA 94070 <br /> Analytical (650)232-9600 <br /> FAX(650)232-9612 <br /> www sequoialabs com <br /> GetTSierra <br /> eastrategtes(I) Project Unocal(4) <br /> 4urt, Suite J Project Number Former Unocal#5098,Stocktonb68 Reported <br /> Project Manager Deanna Harding 07/01102 07 46 <br /> BTEX by EPA Method 8260E <br /> Senlinia Analytical - Sacramento <br /> Reporting <br /> alyte Result Lint Units Dilution Batch Prepared Analyzed Method <br /> Notes <br /> A L206021-01 Water Sampled 06/09/020000 Received 06/11/02 18-05 <br /> leethyl tert-butyl ether ND 050 ug/l 1 2060239 06119102 06/20/02 EPA 8260B <br /> nzene ND 0 50 ., „ 11 <br /> (11uycties <br /> ]benzene ND 050ene ND 0 50(total) ND 050 <br /> „ <br /> Gasoline(C6-C 10) ND 50 <br /> rogate Toluene-d8 97% 60-140 <br /> trrogate <br /> 4-BFB 96% 60-140 <br /> Surrogate 1,2-DC,4-d4 122% 60-140 <br /> o1a Analytical- San Carlos The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced to its entirety <br /> Page 81 of 103 <br />