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S 19 Sinai Avenue,S 8 <br /> Sequoia Sacramento,CA 9588 34 <br /> KD4�� (916)921-9600 <br /> Analytical FAX(916)921-0100 <br /> www sequoialabs cam <br /> SECOR International-Rancho Cordova Project ARCO 2093,Tracy,CA <br /> 3017 Kilgore Road,Suite 100 Project Number N/A Reported <br /> Rancho Cordova CA,95670 Prosect Manager Rusty Benkosky 09/28/01 16 24 <br /> Total Purgeable Hydrocarbon,BTEX and MTBE by DHS LUFT-Quality Control <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source %RFC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Nates <br /> Batch 1090184-EPA 5030B(P/T) <br /> Blank 1090184-BLK1) Pre ared&Analyzed 09/18/01 <br /> Purgeable Hydrocarbons ND 50 ug/1 <br /> Benzene ND 050 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 25 " <br /> Surrogate a a a-Tri luorotoluene 108 100 108 60-140 <br /> LCS(1090184-BSI) Prepared&Analyzed 09/18/01 <br /> Benzene 106 0 50 ugll 10 0 106 70-130 <br /> Toluene 103 0 50 10 0 103 70-130 <br /> Ethylbenzene 10 3 0 50 " 10 0 103 70-130 <br /> Glens(total) 30 8 0 50 " 300 103 70-130 <br /> thyl tert-butyl ether 11 3 2 5 100 113 70-130 <br /> Surrogate a a a-Trifluorotoluene 110 100 110 60-140 <br /> Matnx Spike(1090184-MSI) Source 5109221-02 Prepared_&Analyzed 09/18/01 _ <br /> Benzene 106 0 50 ug/l 10 0 ND 106 60-140 <br /> Toluene 104 0 50 10 0 ND 104 60-140 <br /> Ethylbenzene 104 0 50 too ND 104 60-140 <br /> Xytenes(total) 31 1 0 50 " 300 ND 104 60-140 <br /> Methyl tert-butyl ether 13 2 25 100 ND 132 60-140 <br /> Surrogate a a a-Trtuorotoluene 11 1 100 111 60-140 <br /> Matnx_Spike Dup(1090184-MSD1) Source S109221-02 Prepared&Analyzed 09/18/01 <br /> Benzene 112 0 50 ug/1 10 0 ND 112 60-140 5 50 25 <br /> Toluene 109 0 50 10 0 ND 109 60-140 469 25 <br /> Ethylbenzene 11 0 0 50 " 100 ND 110 60-140 5 61 25 <br /> Xylenes(total) 32 9 0 50 300 ND 110 60-140 563 25 <br /> Methyl tert-butyl ether 14 0 2 5 100 ND 140 60-140 5 88 25 <br /> Surrogate a a a-Trifluorotoluene 11 1 100 111 60-140 <br /> uota Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document This analytical report must be reproduced in its entirety <br /> Page Page 10 of 13 <br />