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Drive <br /> 9.d) <br /> BHS JarvisSequoia Morgan Hill CA 950375037(408)776 9600 <br /> An __tical FAX(408)782-6308 <br />-� www sequoialabs com <br /> Secor-Rancho Cordova(ARCO) Project ARCO#4932,Stockton,CA MNH0056 <br /> 3017 Kilgore Rd Suite 100 Project Number NIP Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 08/26/04 18 55 <br /> Purgeable Hydrocarbons and Volatile Organic Compounds by EPA method 8260B - Quality Control <br /> Sequoia Analytical-Morgan Hill <br /> Reporting Spike Source %R-EC RPD <br /> Analyte Result Limo Units Level Result %REC Limits RPD Limit Notes <br /> Batch 4H13002-EPA 5030B P/T <br /> Blank(411 13002-BLKI) Prepared&Analyzed 08/13/04 <br /> Methyl tert-butyl ether ND 050 ugll <br /> Gasoline Range Organics(C4-C 12) ND 50 " <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Surrogate 12 Dichloroethane d4 488 500 98 78-129 <br /> Laboratory Control Sample(41{13002-BSI) Prepared&Analyzed 08/13/04 <br /> Methyl tent butyl ether 117 050 ugll 10 0 117 63 137 <br /> Benzene 113 050 10 0 113 69-124 <br /> . Toluene 118 050 " 10 0 118 78-129 <br /> Ethylbenzene 118 050 10 0 118 84-132 <br /> Xylenes(total) 327 050 300 109 83-137 <br /> Surrogate 12 Dichloroethane-d4 501 " 5 00 100 78-119 <br /> Laboratory Control Sample(4H13002-BS2) Prepared&Analyzed 08/13/_0_4_ <br /> Gasoline Range Organics(C4-Cl2) 397 50 ugll 440 90 70-124 <br /> Surrogate 11-Dichloroethane-d4 4 94 5 00 99 78-119 <br /> Matrix Spike(4H13002-MS1) Source MNH0056-04 Prepared 08/13/04 Analyzed 08/14/04 <br /> Methyl tent-butyl ether 2750 25 ugll 496 1700 212 63-137 LM <br /> Gasoline Range Organics(C4 C12) 24500 2500 22000 4900 89 70-124 <br /> Benzene 510 25 320 160 109 69-124 <br /> Toluene 2480 25 1480 590 128 78-129 <br /> Ethylbenzene 600 25 348 140 132 84-132 <br /> Xylenes(total) 2710 25 1680 670 121 83-137 <br /> Surrogate 1 2-Dichloroethane-d4 4 83 5 00 97 78-119 <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 /> Ars analytical report must be reproduced in its entirety <br /> Page 10 of 15 <br />