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4 <br /> 885 Jarvis Dr <br /> a_ _� Sequoia Morgan dill,CA 95037 <br /> Analytical FAX(408) <br /> (408)762-6306 <br /> www smuoialabs con <br /> Stratus Environmental Inc Project ARCO#2186,Stockton,CA MMC0508 <br /> 3330 Cameron Park Dr,Suite 550 Project Number ARCO#2186,Stockton,CA Reported <br /> Cameron Park CA,95682 Project Manager Jay Johnson 03/27/03 17 13 <br /> 'otal Purgeable Hydrocarbons(C6-C10) and Volatile Organic Compounds by EPA method 8260B- Quality Contrt <br /> Sequoia Analytical-Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 3C21056-EPA 5030B P/T <br /> Blank(3C21056-BLKI) Prepared 03/21/03 Analyzed 03/22/03 <br /> Benzene ND 0 50 1.19/1 <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 050 " <br /> Gasoline Range Organics(C6-C10) ND 50 " <br /> Surrogate 1 2-Dichloroethane-d4 548 500 110 78-129 <br /> Laboratory Control Sample(3C21056-BSI) Prepared 03/21/03 Analyzed 03/22/03 <br /> Benzene 105 050 ug/l 100 105 78-124 <br /> Toluene 105 050 100 105 78-129 <br /> O.rrogate 12-Dichloroethane-d4 486 5 00 972 78-129 <br /> Laboratory Control Sample(3C21056-BS2) Prepared 03/21/03 Analyzed 03/22/03 <br /> Benzene 544 050 ug/1 5 44 100 78-124 <br /> Toluene 347 0 50 32 B 106 78-129 <br /> Gasoline Range Organics(C6-CIO) 397 50 440 902 70-113 <br /> Surrogate 1 2-Dichloroethane-d4 4 99 5 00 99 8 78-129 <br /> 511-0 <br /> 14, <br /> tAW ( -_ Analyzed 03/22/03 <br /> Matrix Spike(3C21056-MSI) Lr�p �a Source N MC0508-01 Prepared 03/21/03 _, ._.. 3/22/0. <br /> Benzene 899 50 ug/1 544 360 99 1 78-124 <br /> Toluene 3590 50 3280 23 109 78-129 <br /> Gasoline Range Organics(C6-CIO) 48800 5000 44000 4800 100 70-113 <br /> Surrogate 12-Dichloroethane-d4 � 5 15 5 00 103 78-129 <br /> V <br /> Matrix Spike Dup(3C21056-MSDI) _ Source MMC0508-0I Prepared 03/21/03 Analyzed 03/22/03 <br /> Benzene 906 50 ug/I 544 360 100 78-124 0 776 12 <br /> Toluene 3680 50 3280 23 111 78-129 249 10 <br /> Gasoline Range Organics(C6-C10) 46500 5000 44000 4800 94 8 70-113 4 83 9 <br /> Surrogate 1 2-Dichloroethane-d4 4 81 500 962 78-129 <br /> Sequoia Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document Unless otherwise stated results are reported on a wet weight <br /> basis This analytical report must be reproduced in its entirety <br /> 10 of 17 <br />