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685 Jarvis Drive <br /> a— ) Sequoia Morgan Hill,CA 95037 <br /> qW Analytical FAX(408) <br /> www sequoialabs coir <br /> Secor-Rancho Cordova Project ARCO#2133,Rancho Cordova,CA <br /> 3017 Kilgore Rd State 100 Project Number ARCO#2133,Racho Cordova,CA Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 10/21/02 17 13 <br /> Total Purgeable Hydrocarbons (C6-C10) by EPA 8015B modified,BTEXM by EPA 8021B- Quality Control <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 2J07004-EPA 5030B [P/TJ <br /> Blank 2J07004-BLK1 Prepared&Analyzed 10/07/02 <br /> Gasoline Range Organics(C6-C10) ND 50 ug/l <br /> Benzene ND 0 50 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 0 50 " <br /> Methyl tert-butyl ether ND 2 5 " <br /> Surrogate a a a-Trafluorotoluene 9 75 10 0 975 55-142 <br /> LCS 2J07004-BS1) Prepared&Analyzed 10/07/02 <br /> Benzene 10 3 050 ugll 10 0 103 68-140 <br /> Toluene 9 69 050 100 969 76-127 <br /> Ethylbenzene 9 03 050 100 903 77-130 <br /> Xylenes(total) 26 2 050 30 0 873 78-128 <br /> Wurrogate a a a-Trac luorotoluene 9 93 100 993 55-142 <br /> i <br /> LCS(2J07004-BS2) Prepared&Analyzed 10/07/02 _ <br /> Gasoline Range Organics(C6-C10) 242 50 ug/l 250 968 62-134 <br /> Surrogate a a a-Trac luorotoluene 13 5 11100 135 55-142 <br /> Matnit Spike 2J07004-MSI) Source MLI0674-01 Prepared&Analyzed 10/07/02 <br /> Gasoline Range Organics(C6-C10) 471 50 ug/l 550 ND 85 6 62-134 <br /> Benzene 8 55 050 " 660 ND 130 68-140 <br /> Toluene 41 4 050 39 7 ND 104 76-127 <br /> Ethylbenzene 896 050 920 ND 97 4 77-130 <br /> Xylenes(total) 42 1 050 461 ND 91 3 78-128 <br /> Surrogate a a a-Tri luorotoluene 179 10 0 179 55-142 QM-07 <br /> Matnit Spike Dup(2307004-MSD1) Source MLI0674-01 -_ Prepared&Analyzed 10/07/02 <br /> Gasoline Range Organics(C6-C10) 499 50 119/1 550 ND 907 62-134 577 41 <br /> Benzene 7 69 0 50 660 ND 117 68-140 106 30 <br /> Toluene 37 8 0 50 397 ND 95 2 76-127 9 09 30 <br /> Ethylbenzene 829 0 50 920 ND 90 1 77-130 7 77 21 <br /> Xylenes(total) 402 0 50 461 ND 87 2 78-128 4 62 21 <br /> Surrogate a a,a-Triuorotoluene 519 100 519 55-142 QM-07 <br /> Sequoia Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain <br /> ofcustody document This analytical report must be reproduced in its entirety <br /> 11 of 15 <br />