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•s J r <br /> 088 Jarvis Dr <br /> Sequoia Morgan Hi[l,CA 95037 <br /> (408)776-9600 <br /> Analytical FAX(408)782-6308 <br /> www sequoialabs can <br /> Secor-Rancho Cordova Project ARCO#595,Stockton,CA MMA0549 <br /> 3017 Kilgore Rd Suite 100 Project Number ARCO#595,Stockton,CA Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 02/25/03 10 42 <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 °/aREC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Lirrut Notes <br /> Batch 3BO6001 -EPA 5030B [P/T) <br /> Blank(3B06001-BLK1) Prepared&Analyzed 02/06/03 <br /> Surrogate a a,a-Triuorotoluene 106 ug/I 100 106 55-142 <br /> Laboratory Control Sample(3B06001-BSI) Prepared&Analyzed 02/06/03 <br /> Benzene 953 050 ug/l loo 953 68-140 <br /> Toluene 976 050 100 976 76-127 <br /> Ethylbenzene 984 050 100 984 77-130 <br /> Xylenes(total) 302 050 300 101 78-128 <br /> Surrogate a a a-Trifluorotoluene 112 100 112 55-142 <br /> Laboratory Control Sample(31306003-BS2) Prepared&Analyzed 02/06/03 <br /> --Oasolme Range Organics(C6-C10) 276 50 u9A 250 110 62-134 <br /> Surrogate a a a-Trifluorotoluene 106 100 106 55-142 <br /> Matrix Spike(3B06001-MSI) Source Prepared 02/06/03 Analyzed 02/07/03 <br /> Gasoline Range Organics(C6-C10) 502 50 ug/1 550 ND 913 62-134 <br /> Benzene 932 050 680 ND 137 68-140 <br /> Toluene 337 050 410 ND 822 76-127 <br /> Ethylbenzene 808 050 980 ND 824 77-130 Q-23a <br /> Xylenes(total) 412 050 479 ND 860 78-128 <br /> Surrogate a a a-Trtfluorotoluene 985 100 985 55-142 <br /> Matrix Spike Dup(3B06001-MSD1) Source Prepared 02/06/03 Analyzed 02/07/03 <br /> Gasoline Range Organics(C6-C10) 506 50 ug/l 550 ND 920 62-134 0 794 41 <br /> Benzene 899 050 680 ND 132 68-140 360 30 <br /> Toluene 334 050 410 ND 81 5 76-127 0 894 30 <br /> Ethylbenzene 808 050 980 ND 824 77-130 000 21 Q-23a <br /> Xylenes(total) 410 050 479 ND 856 78-128 0 487 21 <br /> Surrogate aa a-Tris luorotoluene 912 100 912 55-142 <br /> I <br /> equoia 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 /> This analytical report must be reproduced in its entirety <br /> 17 of 22 <br />