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819 Sinker Ave Ste 8 <br /> KDSequoia. Sacramento CA 95834 <br /> (916)921 9600 <br /> Analytical FAX(915)921 0100 <br /> www sequoialabs cam <br /> Gettler-Ryan -Dublin Project Former Unocal 5098, Stockton, CA S308091 ' <br /> 6747 Sierra Court, Ste J Project Number N/A Reported <br /> Dublin CA, 94568 Project Manager Deanna L Harding- _ 08/20/03 16 56 <br /> Gas ohne\BTEXIOxygenates by EPA method 8260B <br /> - - Sequoia Analytical - Sacramento - <br /> �1 <br /> Reporting <br /> MalY1e Result Linin Units Dilution Batch Prepared Analyzed Method Dotes <br /> MW-11 (530$091-13),Water_-Sampled 08/04/03 15 30 Received 08/05/03 17 35 - - r W�� - ---. - -- - _ --- I. ` `-, _ , - <br /> Methyl tert-butyl ether ND 20 ug/l 1 3080141 08/12/03 08/13/03 EPA 8260B <br /> Surrogate 1 2-DCA-d4 111 % 60-140 <br /> Surrogate Toluene-d8 98% 60-140 <br /> Surrogate 4-BFB 99% 60-140 <br /> MW-11 (5308091-13RE1)Water Sampled 08/04/03 15 30 Received 08/05/03 17 35 HT-RS <br /> Benzene 5300 25 ug/1 50 3080160 08/18/03 08/19/03 EPA 8260B <br /> Toluene 1800 25 11 <br /> Ethylbenzene 410 25- <br /> Xylenes(total) 2400 25 „ <br /> Sup rogate 1,2-DCA-d4 - v - - - - 107% 60-140- <br /> Surrogate <br /> 0-140-Surrogate Toluene-d8 97% 60-140 <br /> Suri agate 4-BFB _ - T 106% 60-140 <br /> MW-12(S308091-14)Water Sampled 08/04/0313 30 Received 08/05/03 17 35 <br /> Ethylbenzene so 0 50 ug/l 1 3080141 08/12/03 06/13/03 EPA 8260B <br /> Methyl tert-butyl ether ND 20 1 <br /> " " " 11 1. <br />_ Sur rogate 12-DC,4-d4 oR of sn_7.4 f) <br /> Surrogate Toluene-d8 99% 60-140 " • <br />—Suri agate 4-BFB 103 % 60-140I%I <br /> .. L (S308091=14RE1)Water=Sampled 08/04/03 13 30-Received 08/05/03-17 35== -- -- --_-_ --- — -- --HT-RS= <br /> Benzene 2 4 0 50 ugA 1 3080160 08/12/03 08/19/03 EPA 8260E <br />--Toluene-_- - -- -- --- -------- =2 0_— -0-50' <br /> Xylenes(total) 4 6 0 50 <br /> Surrogate 1 2-DCA-d4 99% 60440 <br />""Sur/agate Toluene-W _ _ L, _ _ --u __ _�96 V,,'- 6a--I40 -- <br /> Surrogate 4-BFB 100% 60-140 <br /> Sequoia 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)eported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page I4 of 117 <br />