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a § <br /> 4 <br /> -� 885 Jarvis dr <br /> Sequoia Margin Hill,CA 95037 <br /> (408)776-9300 <br /> Analytical <br /> FAX(408)782 3308 <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-1 MMA0549-01 Water Sampled 011171031725 Received 01/20/03 10 15 <br /> Gasoline Range Organics(C6-C10) 4200 500 ugA 10 3A31004 01/31/03 01/31/03 8015Bm/8021B HC-21 <br /> Benzene 300 5 Q " <br /> Toluene 36 5 0 " <br /> Ethylbenzene 100 5 0 " <br /> Xylenes(total) 240 5 0 " <br /> Methyl tert-butyl ether 63 25 " <br /> Surrogate a a a-Triuorotoluene 653% 55-142 " <br /> MW-3(MMA0549-02)Water Sampled 01/17/03 17 50 Received 01/20/03 10 15 <br /> Gasoline Range Organics(C6-C10) 110 50 ug/l I 3BO6001 02/06/03 02/06/03 8015Bm/802IBHC-21,HT 04 <br /> Benzene 19 0 50 HT-04 <br /> Toluene ND 050 HT-04 <br /> Ethylbenzene 067 0 50 HT-04 <br /> Xylenes(total) 057 050 HT-04 <br /> Methyl tert-butyl ether 12 2 5 HT-04 <br /> Wrrogate a a a-Trtfluorotoluene 107% 55-142 HT-04 <br /> MW-5(MMA0549-03)Water Sampled 01/17/03 14 15 Received 01/20/03 10 15 <br /> Gasoline Range Organics(C6-C10) ND 50 ug/l 1 3A31002 01/31/03 01/31/03 8015Bm/8021B ^ <br /> Benzene ND 0 50 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 0 50 " <br /> Methyl tert-butyl ether ND 2 5 " <br /> Surrogate a a a-Trifluorotoluene 966% 55-142 " <br /> �equota Analytical-Morgan Hill The results to 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 /> 3 of 22 <br /> ,r <br />