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885 Jarvis <br /> �i)— Sequoia McrganHill,C 50337r <br /> 9 <br /> (408)776-9600 <br /> 0!�� Analytical FAX(408)782-6308 <br /> www sequotalabs corn <br /> URS Corporation[1) Project BP Heritage Site#11194,Tracy,CA MMB0060 <br /> 2870 Gateway Oaks Dr,Ste 300 Project Number BP Heritage Site#11194,Tracy,CA Reported <br /> Sacramento CA,95833 Project Manager Vern Elarth 03/07/03 08 04 <br /> al Purgeable Hydrocarbons (C6-C10) and Volatile Organic Compounds by EPA method 8260B - Quality Con <br /> Sequoia Analytical -Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Lirrut Notes <br /> Batch 3B24023-EPA 5030B P/T <br /> Laboratory Control Sample(3B24023-BS1) Prepared&Analyzed 02/24/03 <br /> Methyl tent-butyl ether 100 050 ugll 100 ]Go 63-137 <br /> Benzene 100 050 100 100 78-124 <br /> Toluene 991 050 too 991 78-129 <br /> Surrogate 1,2-Dichloroethane-d4 538 500 108 78-129 <br /> Laboratory Control Sample(3B24023-BS2) Prepared&Analyzed 02/24/03 <br /> Methyl tert-butyl ether 809 050 ug/1 9 04 89 5 63-137 <br /> Benzene 538 050 544 989 78-124 <br /> Toluene 303 050 32 8 924 78-129 <br /> Gasolme Range Organics(C6-C10) 402 50 440 9] 4 70-113 <br /> WII;9--Ie 1 2-Dichlorcethane-d4 5 53 500 111 78-129 <br /> Laboratory Control Sample Du (3B24023-BSDI) Prepared&Analyzed 02/24/03 <br /> Methyl tent-butyl ether 969 050 ug/1 JOG 969 63-137 3 15 13 <br /> Benzene 9 91 050 100 991 78-124 0 904 12 <br /> Toluene 101 050 JOG <br /> 101 7$-129 1 90 ]0 <br /> Surrogate 12-Dichloroethane d4 551 500 110 78-129 <br /> Laboratory Control Sample Du (3B24023-BSD2) Prepared&Analyzed 02/24/03 <br /> Methyl tert-butyl ether 809 050 ug/I 904 895 63-137 000 13 <br /> Benzene 541 050 544 99 4 78-124 0 556 12 <br /> Toluene 31 4 050 328 95 7 78-129 357 10 <br /> Gasoline Range Organics(C6-CI0) 411 50 440 93 4 70-113 221 9 <br /> Surrogate 12-Dichloroethane-d4 5 43 5 00 109 78-129 <br /> i <br /> Matrix Spike(3B24023-MSI) Source MM00060-13 Prepared 02/24/03 Analyzed 02/25/03 <br /> Methyl tert-butyl ether 386 5 0 ug/1 904 310 84 1 0-200 <br /> Benzene 541 50 544 ND 994 78-I24 <br /> Toluene 310 5 0 328 ND 945 78-129 <br /> Gasoline Range Organics(C6-C10) 4220 500 4400 ND 850 70-113 <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 /> 9 of 11 <br />