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.� 885 Jarvis Dr <br /> Sequoia Mag¢n Hsll,CA 9503737 <br /> Analytical FAX(406(408)77826 <br /> www sequoialabs can <br /> Secor-Rancho Cordova Project ARCO#595,Stockton,CA MMA0549 <br /> 3017 Kilgore Rd Suite 100 Project Number ARCO#595,Stockton,CA Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 02/25/03 10 42 <br /> Total Purgeable Hydrocarbons (C6-C10) by EPA 8015B modified, BTEXM by EPA 8021B <br /> Sequoia Analytical -Morgan Hill <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-8(MMA0549-06)Water Sampled 01/17/03 15 10 Received 01/20/03 10 15 <br /> Gasoline Range Organics(C6-C 10) ND 50 ug/1 1 3A31004 01/31/03 01/31/03 8015Bm/8021B <br /> Benzene ND 0 50 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether 2 7 2 5 " <br /> Surrogate a,a a-Trifluorotoluene 968% 55442 " <br /> MW-9 MMA0549-07 Water Sampled 01/17/0313 16 Received 01/20/03 10 15 <br /> Gasoline Range Organics(C6-C10) ND 50 ug/I 1 3A31001 01/31/03 01/31/03 8015Bm18021B <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 2 5 " <br /> 0rrogate a,a a-Trrfluorotoluene 979% 55-142 <br /> W " <br /> M -10(MMA0549-08)Water Sampled 01/17/03 l2 40 Received 01/20/03 10 15 <br /> Gasoline Range Organics(C6-C10) ND 50 ug/I 1 3A31002 01/31/03 01/31/03 8015BnV8021B <br /> Benzene ND 050 <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 0 50 " <br /> Methyl tert-butyl ether ND 2 5 " <br /> Surrogate a,a a-Trtfluorotoluene 101 % 55-142 " <br /> equoia Analytical-Morgan Hill 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 reproduced in its entirety <br /> 5 of 22 <br />