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�� Sequoia 819 Striker Ave 5 <br /> Sacramento <br /> ro CA 9588 344 <br /> (9 t 6)92 r 9600 <br /> Analytical FAX(916)921 0100 <br /> www sequoialabs com <br /> Gettler-Ryan-DublinProject Former Unocal 5098,Stockton,CA S308091 <br /> 6747 Sierra Co ,urtSte ] Project Number N/A Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 08/20/03 16 56 <br /> Gaso11neWEX\Oxygenates by EPA method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> nalyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> W-13 (5308091-15)Water Sampled 08/04/03 15 00 Received 08/05/03 17 35 <br /> enzene 2.6 050 ug/1 1 3080117 08/11/03 08/13/03 EPA 8260B <br /> luene 16 050 <br /> hylbenzene 055 050 <br /> Xylenes(total) 35 050 " <br /> ethyl tert-butyl ether ND 20 " <br /> rrogate 1,2-DCA-d4 102 % 60-140 <br /> Surrogate Toluene-d8 102 % 60-140 " <br /> 11'rrogate 4-BFB 100 % 60-140 <br /> W-14(S308091-16)Water Sampled 08/04/0313 55 Received 08/05/03 17 35 <br /> Benzene ND 050 ug/l 1 3080160 08/18/03 08/18/03 EPA 82648 <br /> 1luene ND 050 <br /> 1hylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> AJdW tert-butyl ether ND 2 0 " <br /> 11"ate 1,2-DCA-d4 107% 60-140 <br /> ,19ut i ogate Toluene-d8 98% 60-140 <br /> t rugate 4-BF3 108 % 60-140 <br /> W-14A(S308091-17)Water Sampled 08/04/03 14 20 Received 08/05/03 17 35 <br /> Benzene 13 050 ug/l 1 3080141 08/12/03 08/13/03 EPA 8260B <br /> uenenzene 0 83 0 f50 <br /> l <br /> ylbeND 050 " <br /> lenes(total) 1 4 050 " <br /> Methyl tert-butyl ether ND 2 0 „ <br /> I7rogale 1,2-DCA-d4 104% 60-140 <br /> rrogate Toluene-d8 98% 60-140 <br /> Surrogate 4-BFB 101 % 60-140 „ <br /> a Analytical - Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> This analytical report must be i eproduced in its entirety <br /> Page 15 of 117 <br /> 1 <br />