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885 Jarvis Dr <br /> y Sequoia Morgan 10,CA 95037 <br /> a— ) <br /> ► Analytical FAX(408)782-6308(408)776-9600 <br /> www sequoialabs 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 Contri <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 /> Matrix Spike Dup(3C21056-MSDI) _ Source MMC0508-01 Prepared 03/21/03 Analyzed 03/22/03 <br /> Batch 3C22003-EPA 5030B PIT <br /> Blank(3C22003-BLKI) T Prepared&Analyzed 03/22/03 <br /> Benzene ND 0 50 ug/l <br /> Toluene ND 050 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 0 50 " <br /> Gasoline Range Organics(C6-C10) ND 50 " <br /> Surrogate 1 2-Dichloroethane-d4 4 75 500 950 78-129 <br /> Laboratory Control Sample(3C22003-BSI) Prepared&Analyzed 03/22/03 <br /> enzene 974 0 50 ug/1 10 0 974 78-124 <br /> oluene 9 13 0 50 100 91 3 78-129 <br /> Surrogate 1,2-Dichloroethane-d4 465 500 930 78-129 <br /> Laboratory Control Sample(3C22003-BS2) Prepared&Analyzed 03/22/03 <br /> Benzene 5 18 050 ug11 544 95 2 78-124 <br /> Toluene 28 3 050 32 8 863 78-129 <br /> Gasoline Range Organics(C6-C10) 430 50 440 977 70-113 <br /> Surrogate 12-Dichloroethane-d4 468 500 936 78-129 <br /> r VN AL3 <br /> Matrix Spike(3C22003-MSl �1� � Source N MC0508-08 Pre ared&Analyzed 03/22/03 <br /> Benzene Co Wr 479 50 U94 544 ND 881 78-124 <br /> Toluene 2620 50 3280 ND 799 78-129 <br /> Gasoline Range Organics(C6-C10) 39600 5000 44000 2400 84 5 70-113 <br /> Surrogate 1,2-Dichloroethane-d4 458 5 00 91 6 78-129 <br /> IDSequoia 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 /> 11 of 17 <br />