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Sequoia <br /> 885 Jarvis Dr <br /> 4 D (408)Se uoia Morgan HA,CA 95037 <br /> Analyfical FAX(408)782-6308 <br /> www.sequoialabs.can <br /> RS Corporation[1] Project: ARCO#548,Stockton,Ca MLK0692 <br /> 2870 Gateway Oaks Dr.,Ste 300 Project Number: ARCO#548,Stockton,CA Reported: <br /> Sacramento CA,95833 Project Manager: Vem Elarth 12/02/02 13:43 <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 /> INF Total Air MLK0692-01Air Sampled:11/19/02 13:30 Received: 11/19/02 15:00 <br /> Gasoline Range Organics(C6-CIO) 79 10 ug/l I 2K22004 11/22/02 11/22/02 8015%/802113 HC-12 <br /> Benzene 0.15 0.10 <br /> Toluene 1.4 0.10 <br /> Ethylbenzene 0.39 0.10 " <br /> Xylenes(total) 3.9 0.10 <br /> Methyl tert-butyl ether 0.53 0.50 <br /> Surrogate:a,a,a-Trifluorotoluene 174% 55-142 S-02 <br /> IMF Cat Air MLK0692-OZ Air Sampled:11/19/02 13:25 Received:11/19/02 15:00 <br /> Gasoline Range Organics(C6-C70) 74 10 ug/l 1 21{.22004 11/22/02 11/22/02 8015Bm/8021B HC-12 <br /> Benzene 0.16 0.10 <br /> Toluene 1.6 0.10 <br /> Ethylbenzene 0.43 0.10 " <br /> Xylenes(total) 4.2 0.10 " <br /> Methyl tert-butyl ether 0.57 0.50 " <br /> Surrogate:a,a,a-Trifluorotoluene 55.5% 55-142 <br /> gift F Air MLK0692-03 Air Sam led:11/19/02 13:20 Received: 11/19/02 15:00 <br /> Gasoline Range Organics(C6-C10) ND 10 ug/1 1 2K22004 11/22/02 11/22/02 8015Btn18021B <br /> Benzene ND 0.10 <br /> Toluene 0.36 0.10 " <br /> Ethylbenzene ND 0.10 <br /> Xylenes(total) ND 0.10 <br /> Methyl tent-butyl ether ND 0.50 " <br /> Surrogate:a,a,a-Triuorotoluene 104% 55-142 H <br /> Sequoia 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 /> 4 of 9 <br />