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819 Striker Avenue,Suite 8 <br /> Sequoia Sacramento,CA 95834 <br /> (916)921 9600 <br /> Analytical FAX(916)921-0100 <br /> AdIlk 1w www sequoialabs com <br /> SECOR Intemational-Rancho Cordova Protect ARCO 434,Lodi,CA <br /> 3017 Kilgore Road,Suite 100 Project Number N/A Reported <br /> Rancho Cordova CA,95670 P%lett Manager Rusty Benkosky 10/01/01 14 56 <br /> Total Purgeable Hydrocarbons and BTEX by DHS LUFT-Quality Control <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1090222-EPA 5030B(P/'1') <br /> Blank 1090222-BLKl Prepared&Analyzed 09/20/01 <br /> Purgeable Hydrocarbons ND 50 ug/I <br /> Benzene ND 0 50 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 0 50 " <br /> Surrogate a a a-Trifluorotoluene 114 100 114 60-140 <br /> LCS(1090222-BS1) Prepared&Analyzed 09/20/01 <br /> Benzene 101 0 50 U911 100 101 70-130 <br /> Toluene 977 0 50 " 100 977 70-130 <br /> Ethylbenzene 9 80 0 50 10 0 98 0 70-130 <br /> Xylenes(total) 295 0 50 300 98 3 70-130 <br /> 0rrogate a a a-Trtfluorotoluene 11 2 100 111 60-140 <br /> Matrix Spike(1090222-MS1 Source 5109228-08 Prepared&Analyzed 09/20/01 <br /> Benzene 106 0 50 119/1 100 ND 106 60-140 <br /> Toluene 103 050 too ND 103 60-140 <br /> Ethylbenzene 104 050 100 ND 104 60-140 <br /> Xylenes(total) 31 1 050 300 ND 104 60-140 <br /> Surrogate a a a-Tri luorotoluene 116 " 100 116 60-140 <br /> Matrix Spike Dup(1090222-MSD1) Source S109228-08 Prepared&Analyzed_09/20/01 <br /> Benzene 106 050 ug/l 100 ND 106 60-140 000 25 <br /> Toluene 104 050 " 100 ND 104 60-140 0 966 25 <br /> Ethylbenzene 105 050 100 ND 105 60-140 0 957 25 <br /> Xylenes(total) 31 0 050 300 ND 103 60-140 0 322 25 <br /> Surrogate aaa-Triuorotoluene 11 1 100 111 60-140 <br /> Uola Analytical-Sacramento The results in thts 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 8 of 12 <br />