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vis Dr <br /> Sequoia 8l,CA 95037 <br /> �1 Morgan Hill,CA 95037 <br /> 008)77(x9600 <br /> Analytical FAX(408)782-6308 <br /> www se4uoialabs carr <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 /> 'oral Purgeable Hydrocarbons(C6-C10) and Volatile Organic Compounds by EPA Method 8260B- Quality Contra <br /> Sequoia Analyhcal-Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 3C22003-EPA 5030B P/T <br /> Matrix Spike Dup(3C22003-MSD1) Source MM_C0508-08 Prepared&Analyzed 03/22/03 <br /> Benzene 526 50 118/1 T 544 ^ ND 967 78-124 9 35 12 <br /> Toluene 2850 50 3280 ND 869 78-129 841 10 <br /> Gasoline Range Organics(C6-CIO) 43700 5000 44000 2400 939 70-113 9 84 9 QR-02 <br /> Surrogate 1 2-Dichloroethane-d4 4 74 500 948 78-129 <br /> Batch 3C22018-EPA 5030B PIT <br /> Blank(3C22018-BLKI) Prepared 03/22/03 Analyzed 03/23/03 <br /> Benzene ND 0 50 ugA <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 0 50 " <br /> ylenes(total) ND 050 n <br /> asolme Range Organics(C6-C10) ND 50 <br /> Surrogate 1,2-Dichloroethane-d4 486 500 972 78-129 <br /> Laboratory Control Sample(3C22018-BS1) Prepared&Analyzed 03/22/03 <br /> Benzene 969 050 u811 10 0 968 78-124 <br /> Toluene 9 17 050 10 0 91 7 78-129 <br /> Surrogate 1 2-Dichloroethane-d4 482 500 964 78-129 <br /> Laboratory Control Sample(3C22018-BS2) Prepared 03/22/03 Analyzed 03/23/03 <br /> Benzene 546 0 50 ug/l 544 100 78-124 <br /> Toluene 29 3 0 50 32 8 893 78-129 <br /> Gasoline Range Organics(C6-C10) 412 50 440 93 6 70-113 <br /> Surrogate 12-Dichloroethane-d4 4 73 500 946 78-129 <br /> Matrix Spike 3022018-MS1 Gyp s Source MMC0508-09 Prepared 03/22/03 Analyzed 03/23/03 <br /> Benzene 108 10 ug/1 109 ND 991 78-124 <br /> Toluene 587 10 656 ND 895 78-129 <br /> Gasoline Range Organics(C6-CIO) 8550 1000 8800 520 91 2 70-113 <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 /> 12 of 17 <br />