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Sequoia m8195cnAve 958N <br /> (916)921 CA 99600 <br /> Analytical FAX(916)921 0100 <br /> www sequoialabs com <br /> ler-Ryan-Dublin Project Former Unocal 5098, Stockton,CA 5305190 <br /> 6747 Sierra Court,Ste J Project Number NIA Reported <br /> Dublin CA, 94568 Pro)ect Manager Deanna L Harding 05/21/03 17 32 <br /> 1 GasohneWEX\Oaygenates by EPA method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> alyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> A(S305190-0I)Water Sampled 05/04/03 00 00 Received 05/06/03 17 50 <br /> tnzene ND 050 ug/1 1 3050248 05/15/03 05/15/03 EPA 8260B <br /> luene ND 050 " <br /> Ethylbenzene ND 0 50 " <br /> ylenes(t0ta1) ND 0 50 " <br /> ethyl ten-butyl ether ND 2 0 <br /> urrogate 1 2-DCA-d4 12I % 60-140 <br /> Surrogate Toluene-d8 94 % 60-140 " <br /> r rogale 4-BFB 94% 60-140 <br /> W-1 (S305190-02)Water Sampled 05/06/03 16 00 Received 05/06/03 17 50 <br /> iuene 21 050 ug/1 1 3050234 05/14/03 05/15/01 FPA 8260B <br /> h)[benzene 120 050enes(total) 130 050 <br /> Methyl tert-butyl ether ND 2 0 <br /> to 1.2-DCA-d4 104% 60-140 " <br /> ate Toluene-d8 100`/ 60-140 <br /> Sui rogate 4-BFB 129% 60-140 " <br /> I—ILV-1 (S305190-02RE1)Water Sam led 05/06/03 16 00 Received 05/06/03 17 50 <br /> nzene 820 5 0 u2-/l 10 3050234 05/15/03 05/15/03 EPA 8260B <br /> Surrogate 1 2-DCA-d4 105 % 60-140 " <br /> 1'rogate Toluene-d8 104% 60-140 <br /> rrogaie 4-BF3 101 % 60-140 <br /> MW-2 (S305190-03)Water Sampled 05/06/03 15 05 Received 05/06/03 17 50 <br /> fn7ene 2400 25 ug/l 50 +050234 05/14/03 05/15/03 I-PA 8260E <br /> luene 66 25 " <br /> Ethylbenzene 1300 25 <br /> lenes(total) 2800 25 <br /> thyl tert-butyl ether ND 100 <br /> Surrogate 1,2-DCA-d4 105% 60440 " <br /> fogaie <br /> ogale Toluene-d8 104% 60-140 4-BFB 114% 60-140 " <br /> tuoia Analytical - Sacramento The results in this report apply to the samples anahzed in accordance with the chain of <br /> custody document Unless otherwise stored results are reported on a wet weight basis <br /> This analytical i epori must he reproduced in its enrrret) <br /> Page 9 of 121 <br />