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4 <br /> 819 Striker Avenue Suite 8 <br /> Sequoia Sacramento CA 95834 <br /> (916)921-96W <br /> FAX 92 1 <br /> i!D <br /> 1%0Analytical www sequo+alabs com <br /> SECOR International -Rancho Cordova Project ARCO 595 Stockton,CA <br /> 3017 Kilgore Road SUIIL. 100 Project Number NIA Reported <br /> Rancho Cordo,a CA 95670 Projeu Manages Rusty Benkosky 03/21/01 17 22 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spikc, Source. %RCC RPD <br /> Anakic K4sult Limit Un+ls I creel Result %RLC I imils RPD Limo Note% <br /> Batch 1030130 - EPA 5030B (P/T) <br /> Blank(1030130-BLKI) Prepared&Analyzed 0_3/09/01 <br /> Purgeable Hydrocarbons ND 50 o ug/l <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzanc ND 0500 " <br /> Xylenes(total) ND 0 500 <br /> Methyl tert-butyl ether ND 2 50 " <br /> Surrogaie aaa-D iJluororolucne 983 100 983 60-140 <br /> LCS(1030130_BSI) -_ _ --- Prepared&Analyzed 03/09/01 <br /> Benzene 9 10 0 500 ug/l 10 0 91 0 70-130 <br /> Toluene 93i 0 500 too 93 5 70-130 <br /> (benzene 944 0500 too 94 4 70-130 <br /> es(total) 28 2 0 500 300 940 70-130 <br /> ethyl tert-butyl ether 9 15 2 50 10 0 91 5 70-130 <br /> Surrogate a a a-Trifluorotohwne 8 69 100 869 60-140 <br /> Matrix-Spike(1030130-MSI) - _ Source.-S103064-05 mm Prepared&Analyzed 03/09/01 <br /> Benzene 9 84 0 500 ug/l too ND 98 4 60-140 <br /> Toluene 100 0 500 10 0 ND 100 60-140 <br /> Ethylbenzene 102 0 500 100 ND 102 60-140 <br /> Xylenes(total) 309 0 500 300 ND 103 60-140 <br /> Methyl tort-butyl ether 9 85 2 50 l0 0 ND 98 5 60-140 <br /> Surrogate a a o-Triuorotoluene 754 - 100 75 4 60-140 <br /> Matrix Spike Dup(1030130_MSDI) _ Source 5103064-05 Prepared&Analyzed 03/09/01 _ _- <br /> Benzene 100 0 500 ug/l 10 0 ND 100 60-140 161 25 <br /> Toluene 101 0 500 100 ND 101 60-140 0 995 25 <br /> Ethylbenzene 105 0 500 100 ND 105 60-140 2 90 25 <br /> Xylenes(total) 316 0 500 300 ND 105 60-140 224 25 <br /> Methyl tent-butyl ether 942 250 t o 0 ND 942 60-140 446 25 <br /> Surrogate a a a-Tr�fluorololuene 785 100 785 60-140 <br /> quota 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 /> Pace 7ofII <br />