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Sequoia 819 <br /> (916)921 9600 <br /> SinkerAvesle 8 <br /> SacranentoCA 95834 <br /> Analytical (916)921 <br /> 0 <br /> www S-001alab <br /> Gettler-Ryan -Dublin Pro.Ject Former Unocal 5098,Stockton,CA ' <br /> 6747 Sierra Court,Ste 1 5305190 <br /> Project Number N/p, Reported <br /> Dublin CA, 94568 Project Manager Deanna L Harding 05/21/03 17 32 <br /> Gasoline\BTEX\Oaygenates by EPA method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting ' <br /> 1"nal-vie Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-3 5305190-04 Water Sam led 05/04/03 16 10 Received 05/06/03 17 50 <br /> Benzene 4800 50 ug/] 200 3050179 05/12/03 05/12/03 EPA 8260B <br /> Toluene 740 50 <br /> Ethvlbenzene 1200 50 <br /> Xylenes(total) 4100 50 <br /> Methyl tent-butyl ether ND 200 <br /> Surrogate 1 2-DCA-d4 110% 60-140 <br /> Surrogate Toluene-d8 104% 60-140 <br /> Surrogate 4-BFB 100% 60-140 <br /> MW-4(5305190-05)Water Sampled 05/06/0314 10 Received 05/06/03 17 50 <br /> Benzene 1400 5 0 ug/l 10 3050234 _05114103 05115/03= EPA 8260B - <br /> Toluene 56 5 0 „ <br /> Ethylbenzene 120 so <br /> xylenes(total) 310 = 5 0 - <br /> Methyl ten-butyl ether ND 20 " <br /> Suri ogaie 12-DCA-d4 103% 60-140 " <br /> Surrogate Toluene-d8 105% 60-140 <br /> Surrogate 4-BFB 106% 60-140 <br /> M W-5 (S305190-06)N'ater Sampled 05/06/031055 Received 05/06/031750 <br /> Benzene ND 0 50 ug/1 1 3050307 05!19103 05/20/03 EPA 8260B <br /> - Toluene -- - --- ND-----0 50—_-----= - -- -------- -- -- -- _ __� <br /> Ethy Ibenzene� ND 050 <br /> Xylenes(total) -- - <br /> - ND---- 050 <br /> Methyl tert-butyl ether _ ND 2 0 <br /> Sur r ogate 12-DCA-d4 104% 60-140 " <br /> Surt_ogare,Toluene-d8 _- _ -_ __ _ _ --107%6 •60-140 " - <br /> Sur rogwe 4-BFB 75% 60-140 <br /> Sequoia Analytical -Sacramento The results in this report apply io rhesamples anali7ed in acco?dance wrth the chain o/ <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> This analwical repos i must be rep?oduced in its enrtrety <br /> Page 10 of 121 <br />