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.-Y' 8851 <br /> 4D CA 95037 <br /> arae DriveSequoia Morgan 4p8)775 96110 <br /> 1W Analytical FAX(409)7826308 <br /> www sequaialabs corn <br /> Secor-Rancho Cordova(ARCO) Project ARCO#4932,Stockton,CA MND0090 <br /> 3017 Kilgore Rd Suite 100 Project Number NIP Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 04/19/04 17 58 <br /> Purgeable Hydrocarbons and BTEX by EPA 8015B/8021B <br /> Sequoia Analytical-Morgan Hill <br /> Reporting <br /> Analyte Result lamlt Units Dilution Batch Prepared Analyzed Method Note <br /> AS-EFF(MND0090-03)Air Sampled 04/05/04 1105 Received 04/06/04 09 30 <br /> Gasoline Range Organics(C4-C12) 250 100 mg/ml Air 10 4D07003 04/07/04 04/07/04 EPA 8015B/ <br /> 8021B <br /> Benzene 9 8 1 0 <br /> Toluene 29 10 " <br /> Ethylbenzene 5 5 1 0 <br /> Xylenes(total) 33 20 <br /> Methyl tort-butyl ether 87 5 0 ^ ^ <br /> Surrogate aa a-Tri luorotoluene 990% 56-134 ^ ^ ^ <br /> Surrogate 4-Bromafluorobenzene 869% 70-130 ^ ^ <br /> Gasoline Range Organics(C4-C12) 70 24 ppmv 10 ^ <br /> Benzene 3 1 031 <br /> Toluene 76 027 <br /> Ethylbenzene 13 023 <br /> Xylenes(total) 7 6 047 <br /> Methyl tert-butyl ether 24 14 <br /> Surrogate a aa-Tr fluorotoluene 993% 56-134 ^ ^ ^ ^ <br /> Surrogate 4-Bromofluorobenzene 867% 70-130 <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 /> Page 6ofl5 <br />