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i <br /> � BBS DTLVC <br /> SegllUla Morgan Hilll CA CA 95037037 <br /> a— ) (408)79600 <br /> Analytical <br /> FAX(4088)78282 6308 <br /> Www sequoialabs cum <br /> Secor-Rancho Cordova(ARCO) Prosect ARCO#2133,Rancho Cordova,CA MNC0535 <br /> 3017 Kilgore Rd Suite 100 Project Number NIP Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 04/05/04 16 18 <br /> Volatile Organic Compounds by EPA Method 8260B - 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 4C22001 -EPA 5030B PIT <br /> Matrix Spike Dup(4C22001-MSDI) Source_M_N_ CO535-09 Prepared 03/22/04 Analyzed 03/23/04 _ <br /> Gasoline Range Organics(C6 C10) 7600 1000 ugll 8800 1300 71 6 70-124 5 41 20 <br /> Methyl tert-butyl ether 968 10 202 770 980 63-137 0 206 20 <br /> Benzene 100 10 130 5 6 72 6 69-124 408 20 <br /> Toluene 660 10 594 ND 111 78-129 497 20 <br /> £thylbenzene 155 10 144 ND 108 84-132 4 62 20 <br /> Xylenes(total) 789 10 674 ND 117 83-137 5 34 20 <br /> Surrogate 1 2-Dichloroethane-d4 5 33 5 00 107 78-129 <br /> Sequoia Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain <br /> 0 of custody document Unless otherwise stated results are reported on a wel weight <br /> basis This analytical report must be reproduced in its entirety <br /> Page 20 of 21 <br />