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i <br /> Road <br /> �j� Sequoia InC Carlos <br /> Industrial <br /> ''rt�����J'"'�I'' s Sen Carlos CA 94070 <br /> qqw Analytical a (650)232 9600 <br /> FAX(650)232-4612 <br /> www sequoialabs com <br /> Getiler-Ryan/Geostratepies(1) Project Unocal(4) L208029 <br /> 6747 Sierra Court. Suite J Project Number Former Unocal#!2859 Stockton= Reported <br /> Dublin CA 94568 Project Manager Deanna Harding 08/28/02 11 23 <br /> Total Purgeable Hydrocarbons (C6-00) by EPA 8015B modified, BTEXM by EPA 8021B <br /> 4 <br /> Sequoia Analytical - Morgan Hill = <br /> Reporting <br /> Analvte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> M1W-19(L208029-19)Water Sampled 08/09/0212 16 Received 08/11/02 11 30 - <br /> Gasoline Range Organics(C6-C10) ND, - 50 ug/l _ I 2H22002 08/22/02 08/22/02 , 8015Bm/8021B r <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Etbylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl ten-butyl ether ND 2 5 ^ <br /> Surrogate a a a-Trifluoroioluene 895% 70-130 " <br /> MW-20(L208029-20)Water Sampled 08/09/02 16 45 Received 08/11/02 11 30 <br /> Gasoline Range Organics(C6-C10) ND 50 ug/I I 2H22001 08/22/02 08/22/62 8015Bm/8021B <br /> Benzene <br /> l 1 050 " <br /> " <br /> _Toluene ND 050 <br /> Ethvlbenzene LL- ND 050 <br /> Xylenes(total) l 4 050 " <br /> Methyl tent-butyl ether ND 2 5 ^ <br /> Surrogate a,a n-Trifluorotoluene 906% 70-130 " <br /> MW-21 (L208029-21)Water Sampled 08/09/02 17 20 Received_08_/11/02 11 30 <br /> Gasoline Range Organics(C6-C10) ND 50 ug/l 1 2H2200408/22/02 08/22/02 8015Bm/8021B <br /> Benzene 1-4D 050 �� ^ <br />___Toluene ND 050 <br /> Ethylbenzene ND 050 ^ <br />-_._Xyienes(total) Y _ ND 0 50__ <br /> Methyl Cert-butyl ether ND 2 5 <br />=--Surrogate a a a-Trifluorotoluene= -- 83 9% --70-130={ <br /> Sequoia Analytical - San Carlos The results in this report apply to the samples analyzed in accordance with the chain o <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 13 of 25 <br />