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814 Sinker Avenue Suite 8 <br /> Sequoia Sacramento,CA 95834 <br /> 4D (916)921-9600 <br /> Analytical -0100 <br /> SECOR International-Rancho Cordova Project Arco 6020,Manteca,CA <br /> 3017 Kilgore Road,Suite 100 Pmject Number 6020,Manteca,CA Reported <br /> Rancho Cordova CA,95670 Project Manage[' Rusty Benkosky 04/03/02 18 59 <br /> Total Purgeable Hydrocarbon,BTEX and MTBE by DHS LIFT- Quahty 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 2040001-EPA 5030B(P/T) <br /> Blank 2040001-BLK1 Prepared&Anal 03/28/02 <br /> Purgeable Hydrocarbons ND 50 ugll <br /> Benzene ND 050 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl etber ND 25 " <br /> Surrogate a a a-Triuorotoluene 918 100 918 60-140 <br /> LCS 2040001-BSI) Prepared&Analyzed 03/28/02 <br /> Benzene 792 050 ugll 100 792 70-130 <br /> Toluene 894 050 " 100 894 70-130 <br /> Ethylbenzene 941 050 100 94 1 70-130 <br /> "ylenes(total) 29 6 050 30 0 98 7 70-130 <br /> ethyl Cert-butyl ether 8 82 2 5 100 88 2 70-130 <br /> Surrogate a a a-Trifluorotoluene 986 100 986 60-140 <br /> MatrixSpike(2040001-MS1) Source 5203382-09 Prepared 03/28/02 Analyzed 03/29/02 <br /> Benzene 805 0 50 ug/1 10 0 ND 80 5 60-140 <br /> Toluene 906 050 100 ND 90 6 60-140 <br /> Ethylbenzene 961 050 100 ND 96 1 60-140 <br /> Xylenes(total) 29 8 050 300 ND 99 3 60-140 <br /> Methyl tert-butyl ether 934 2 5 " 100 ND 895 60-140 <br /> Surrogate a a a-Triuorotoluene 662 100 662 60-140 <br /> Matrix Spike Du 2040001-MSDI Source S203382-09 Prepared 03/28/02 Analyzed 03/29/02 <br /> Benzene 794 050 ug/l 100 ND 794 60-140 1 38 25 <br /> Toluene 8 97 0 50 100 ND 897 60-140 0 998 25 <br /> Ethylbenzene 9 42 050 " 10 0 ND 94 2 60-140 2 00 25 <br /> Xylenes(total) 295 050 30 0 ND 98 3 60-140 1 01 25 <br /> Methyl tert-butyl ether 938 2 5 10 0 ND 899 60-140 0 427 25 <br /> Surrogate a a a-Trifluorotoluene 659 100 65 9 60-140 <br /> �equola 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 8 of 1 I <br />