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E - 819 Striker Avenue,Suite 8 <br /> Sacramento CA 95834 <br /> Sequoia (916)921-9600 <br /> FAX(916)921-0100 <br /> Analytical www sequolalabs com <br /> IT Corporation-Sacramento Project Don Rogers <br /> 1433 N Market Blvd,Ste 1 Project Number 880039 1A/01050000 Reported <br /> Sacramento CA,95834 Project Manager Mark Capps 05/29/01 11 04 <br /> Total Purgeable Hydrocarbons (C6-C12),BTEX and MTBE 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 1050305-EPA 5030B /T) <br /> Blank(1050305-BLKI) Prepared&Analyzed 05/23/01 <br /> Lurgeable Hydrocarbons NO 500 ug/1 <br /> enzene NO 0 500 <br /> Toluene NO 0 500 " <br /> k <br /> thylbenzeneND 0500ylenes(total) ND 0500ethyl tert-butyl ether NO 250 <br /> arrogate a a,a-Trzuorotoluene 780 100 780 60-140 <br />—Surrogate <br /> (1050305-BSI) Prepared&Analyzed 05/23/01 <br /> Benzene 904 0 500 ug/1 100 904 70-130 <br /> 958 0 500 n 100 95 8 70-130 <br /> ro—ne 984 0 500 10 0 98 4 70-130 <br /> Xylenes(total) 302 0 500 300 101 70-130 <br /> Methyl tert-butyl ether 733 250 too 73 3 70-130 <br /> Surrogate a a a-Triuorotoluene 850 100 850 60-140 <br /> Matrix Spike(1050305-MS1) Source 5105286-04 Prepared&Analyzed 05/23/01 <br /> Benzene 906 0 500 ugli loo NO 906 60-140 <br /> Toluene 949 0 500 too NO 949 60-140 <br /> Ethylbenzene 954 0 500 100 ND 954 60-140 <br /> Xylenes(total) <br /> 295 0 500 300 NA 983 60-140 <br /> Methyl tert-butyl ether 8 12 2 50 10 0 ND 8l 2 60-140 <br /> Surrogate aaa-Tr�uorotoluene 9 08 10 0 90 8 60-I40 <br /> Matrix Spike Dup(]050305-MSD1 Source 5105286-04 Prepared&Analyzed 05/23/01 <br /> Benzene 894 0 500 ug/I too NO 89 4 60-140 133 25 <br /> Toluene 940 0 500 100 NO 940 60-140 0 953 25 <br /> thy]bzee 949 0 500 100 NO 94 9 60-140 0 525 25 <br />(3XAen,:(t,,n <br /> tal) 293 0 500 n 300 NO 977 60-140 0 680 25 <br /> Methyl ten-butyl ether 7 71 2 50 100 NO 771 60-140 5 18 25 <br /> arrogate a,a a-Triuorotoluene 914 100 914 60-140 <br /> #o—mAnalYtical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 4 of 5 <br />