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819 Striker Avenue,Suite 8 <br /> Sequoia Sacramento,CA 95834 <br /> (916)9219600 <br /> Analytical FAX(916)921-0100 <br /> www sequoialabs com <br /> SECOR International-Rancho Cordova Project ARCO 595,Stockton,CA <br /> 3017 Kilgore Road,Suite 100 eject Number ARCO 595,Stockton,CA Reported <br /> Rancho Cordova CA,95670 NPI-A Min' Rusty Beakosky 02/04/02 14 46 <br /> Total Purgeable Hydrocarbons and-BTEX by DHS LUF`-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 2020023-EPA 5030B(PIT) <br /> Blank(2020023-BLK1) Prepared&Analyzed 02/01/02 <br /> Purgeable Hydrocarbons ND 50 119/1 <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Surrogate a a a-Trtfluorotoluene 976 11100 976 60-140 <br /> LCS(2020023-BS1) Prepared&Analyzed 02/01/02 <br /> Benzene 892 0 50 119/1 100 89 2 70-130 <br /> Toluene 960 0 50 100 960 70-130 <br /> Ethylbenzene 998 0 50 100 998 70-130 <br /> Xylenes(total) 287 050 300 957 70-130 <br /> l Surrogate a,a,a-Trifluorotoluene 101 " 100 101 60-140 <br /> Matrix Spike(2020023-MS1) Source S202011-01 Prepared&Analyzed 02/01/02 <br /> Benzene 8 08 050 u9A 100 ND 808 60-140 <br /> Toluene 8 65 050 100 ND 865 60-140 <br /> Ethylbenzene 909 050 100 ND 90 9 60-140 <br /> Xylenes(total) 266 0 50 " 300 ND 88 7 60-140 <br /> Surrogate a a a-Trifluorotoluene 8 70 11100 870 60-140 <br /> Matrix Spike Dup(2020023-MSD1) Source S202011-01 Prepared 02/01/02 Analyzed 02/02/02 <br /> Benzene 13 3 0 50 119/1 100 ND 133 60-140 48 8 25 QR-02 <br /> Toluene 127 0 50 100 ND 127 60-140 379 25 QR-02 <br /> Ethylbenzene 102 050 100 ND 102 60-140 11 5 25 <br /> Xwlen^a rtnfah 'tl F n CM " An n MD 1M4 !n-ldn 17? 75 <br /> Surrogate a,a a-Trtuorotoluene 949 100 949 60-140 <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed m accordance with the chain <br /> of custody document This analytical report must be reproduced in its entirety <br /> Page Page 5 of 8 <br />