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Sequoia 885 Jarvis Dnv4 <br /> 4DMorgan Ifill CA 95037 <br /> i11W Analytical (408)776-9600 <br /> FAX(408)782 6308 <br /> www seauoialabs torr <br /> Secor-Rancho Cordova Project ARCO#595,Stockton,CA <br /> 3017 Kilgore Rd Suite 100 Project Number ARCO#595,Stockton,CA Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 10/29/02 01111 <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 2J16042-EPA 5030B [P/Tl <br /> Blank(2J16042-BLK1) Pre ared&Analyzed 10/16/02 <br /> Gasoline Range Organics(C6-C 10) ND 50 ug/l <br /> Benzene ND 0 50 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 2 5 " <br /> Surrogate a s a-Trifluorotoluene 8 74 100 874 55-142 <br /> LCS(2J16042-BSI) Prepared&Analyzed 10/16/02 -. <br /> Benzene 110 050 ugll 10 0 110 68-140 <br /> Toluene 10 1 050 10 0 101 76-127 <br /> Ethylbenzene 9 60 050 100 960 77-130 <br /> Xylenes(total) 279 0 50 30 0 930 78-128 <br /> I4urrogate a s a-Trifluorotoluene 9 03 100 90 3 55-142 <br /> LCS(2J16042-BS2) Prepared&Analyzed 10/16/02 - <br /> Gasoline Range Organics(C6-C10) 237 50 ug/) 250 948 62-134 <br /> Surrogate a a a-Trifluorotoluene 13 6 1110 0 136 55-142 <br /> Matrix Spike(2J16042-MSI) Source MLJ0426-03 _ Prepared 10/16/02 Analyzed 10/17/02 <br /> Gasoline Range Organics(C6-C10) 571 50 119/1 550 ND 104 62-134 <br /> Benzene 11 3 050 6 60 ND 171 68-140 QM-07 <br /> Toluene 53 5 050 39 7 ND 135 76-127 QM-07 <br /> Ethylbenzene 11 1 0 50 920 ND 121 77-130 <br /> Xylenes(total) 54 0 050 " 461 ND 117 78-128 <br /> Surrogate a a a-Trruorotoluene 146 100 146 55-142 QM-07 <br /> Matrix Spike Du (2JI6042-MSD/) Source MLJO426-03 Prepared 10/16/02 Analyzed 10/17/02 <br /> Gasoline Range Organics(C6-C10) 568 50 ug/1 550 ND 103 62-134 0 527 41 <br /> Benzene 10 5 050 660 ND 159 68-140 7 34 30 QM-07 <br /> Toluene 3 34 0 50 " 397 ND 8 41 76-127 176 30 QM-07 <br /> Ethylbenzene 108 050 920 ND 117 77-130 274 21 <br /> Xylenes(total) 53 6 0 50 46 1 ND 116 78-128 0 743 21 <br /> Surrogate a a a-Trifluorotoluene 12 9 10 0 129 55-142 <br /> Sequoia Analytical-Morgan Hill The results rn this report apply to the samples analyzed in accordance with the chain <br /> of custody document This analytical report must he reproduced in its entrrely <br /> 12 of 17 <br />