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819 Striker Avenue Suite 8 <br /> Sequoia Sacramento CA 95834 <br /> (916)921-9600 <br /> Analytical FAX(916) 00 <br /> FAX <br /> sequoislabs alabs com <br /> SECOR International-Rancho Cordova Project Arco 6020, Manteca,CA <br /> 3017 Kilgore Road,Suite 100 Project Number N/A Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 03/02/01 l7 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 Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1020283-EPA 5030B P/T <br /> Blank(1020283-BLKI) Prepared& Analyzed 02/26/01 <br /> Purgeable Hydrocarbons ND 500 ug/I <br /> nzene ND 0 500 <br /> Fe <br /> oluene ND 0 500 <br /> Ethylbenzene ND 0 500 " <br /> JMylenes(total) ND 0 500 <br /> Methyl tert-butyl ether ND 4Y2 50 <br /> Surrogate a a a-Trifluorotoluene 11 5 100 115 60-140 <br /> tCS(1020283-BSI) Prepared&Analyzed 02/26/01 <br /> enzene 940 0 500 ug/I 100 940 70-130 <br /> Toluene 994 0 500 i0 0 994 70-130 <br /> zine <br /> 102 0 500 10 0 102 70-130 <br /> (total} 31 4 0 500 30 0 105 70-130 <br /> WM.thyl'tcrt-butyl ether 880 250 too 880 70-130 <br /> IMrrogate a a a-Tr�uorotoluene 121 100 121 60-140 <br /> atrix Spike(1.020283-MSI-) _ Source 5102299=04 __ Prepared&Analyzed 02/26/01 <br /> Benzene 879 0 500 ug/1 100 321 55 8 60-140 Q-02 <br />�Toluene 932 0 500 100 ND 93 2 60-140 <br /> Ethylbenzene 974 0 500 too l 42 83 2 60-140 <br /> Xylenes(total) 299 0 500 300 196 93 1 60-140 <br /> Methyl tert-butyl ether 767 2 50 100 ND 767 60-140 <br /> urrognte a a a-Trifluorotoluene 113 100 113 60-140 <br /> Matrix Spike Dup(1020283-MSD1) _ Source S102299-04 _ Prepared&_Analyzed 02/26/01 _ <br /> Benzene 8 87 0 500 ug/I l0 0 321 566 60-140 0 906 25 Q-02 <br /> Toluene 948 0 500 t 0 0 ND 948 60-140 1 70 25 <br /> Ethylbenzene 992 0 500 t 0 0 142 950 60-140 1 83 25 <br /> Xylenes(total) 305 0 500 300 196 95 1 60-140 1 99 25 <br /> Methyl tert-butyl ether 7 91 250 10 0 ND 79 1 60-140 309 25 <br /> Surrogate a a a-Tnfluorotoluene 114 100 114 60-140 <br /> •la 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 /> Page 8 of 10 <br />