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Suite <br /> �� 819 Sinker Avenue 958 8 <br /> l <br /> Sequoia Sacramento CA 95834 <br /> (9!6)921-9600 <br /> 100 <br /> off Analytical FAX equo 921 s com <br /> www sequoialai�s com <br /> SECOR International -Rancho Cordova Project Arco 6020, Manteca,CA <br /> 30I7 Kilgore Road,Suite 100 Projcct Number N/A Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 03/02/01 17 11 <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 Lnnu Units Level Result %REC Limits RPD Limit Notes <br /> Patch 1020275-EPA 5030B PIT <br /> lank(1020275-BLK1) — - -Prepared& Analyzed 02/23/01 <br /> Purgeable Hydrocarbons ND 500 ug/l <br /> enzene ND 0 500 <br /> oluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> ylenes(total)- -- ---- - J----- ND -- 0 500 -------- --- - - <br /> ethyl ten-butyl ether ND 250 <br /> Surrogate a a a-Trifluorotoluene 833 100 833 60-140 <br /> CS(1020275-BSI) — --__ - Prepared&Analyzed 02/23/01 _ <br /> enzene 8 55 0 500 ug/l 100 855 70-130 <br /> Toluene 904 0 500 100 904 70-130 <br /> zene 932 0 500 100 93 2 70-130 <br /> VW(total) 277 0 500 30 0 92 3 70-130 <br /> Methyl tert-butyl ether 992 250 100 992 70-130 <br /> Lurrogare a a a-Triuorotoluene 795 100 795 60-1400atnx Spike(IO2_0275-MSI) Source 5102252-01 Prepared&Analyzed 02/23/01 <br /> Benzene 851 0 500 ug/1 10 0 ND 85 1 60-140 <br /> Toluene 894 0 500 100 ND 89 4 60-140 <br /> thylbenzene 9 23 0 500 100 ND 92 3 60-140 <br /> Xylenes(total) 273 0 500 300 ND 91 0 60-140 <br /> FMethyl tert-butyl ether 9 13 250 10 0 ND 91 3 60-140 �— - <br /> urrogale a a a-Trifluorotoluene 729 T� 100 72 9 60-140 <br /> Matrix Spike Dup(1020275-MSD1)-- Source S102252-01 Prepared&Analyzed 02/2_3/01 _ <br /> enzene 866 - 0 500 ug/I 10 0 ND 86 6 60-140 1 75 25 <br /> Toluene 9 10 0 500 100 ND 910 60-140 1 77 25 <br /> Ethylbenzene 944 0 500 100 ND 94 4 60-140 225 25 <br /> ylenes(total) 280 0 500 300 ND 93 3 60-140 253 25 <br /> ethyl tert-butyl ether 929 2 50 _ 100 ND 92 9 60-140 1 74 25 - <br /> Surrogate a a a Trac luorotoluene 740 100 74 0 60-140 <br /> 1 <br /> 1 <br /> STia Analytical-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 /> 1 <br /> 1 Page 7 of 10 <br /> �`'lx <br />