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Suit <br /> Sequoia 819 Striker Avenue 958 8 <br /> Sacramento CA 95834 <br /> (916)9Z t-9600 <br /> Analytical100 <br /> CD— FAX(9t6)alai <br /> sequolalabscom <br /> �«., <br /> V <br /> SECOR International-Rancho Cordova Project ARCO 434 Lodi,CA Sampled 915100 <br /> 3017 Kilgore Road,Suite 100 Project Number NIA Received 9/6/00 <br /> Rancho Cordova,CA 95670 Project Manager Rusty Benkosky Reported 9/20/00 <br /> Total Purgeable Hydrocarbons(C6-C12), BTEX and MTBE by DHS LUFT/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> lAnalyte Analyzed Level Result Result Units Recov Limits % Lima % Notes* <br /> Blank(continued) 0090142-BLKI <br /> Surrogate aaa-Trtf u—orofoluene 9/14/00 10 0 10 3 ug/1 600-140 103 <br /> LCS 0090142-BSI <br /> Benzene 9/14/00 100 10 0 ug/1 700-130 100 <br /> Toluene 100 992 " 700-130 992 <br /> Ethylbenzene 100 103 700-130 103 <br /> Xylenes(total) 300 307 700-130 102 <br /> Methyl tent-butyl ether _ _ 100 115 700-130 115 <br /> Surrogate a a a-Trifluorotoluene 100 101 600-140 101 <br /> Matrix Spike 0090142-MSI 5009051-02 <br /> Benzene 9114/00 too ND 101 ug/l 600-140 101 <br /> Toluene too ND 987 600-140 987 <br /> nzene 100 ND 10 4 600-140 104 <br /> s(total) 300 ND 31 1 600-140 104 <br /> Methyl tert-butyl ether too ND 13 6 600-140 136_ <br /> Surrogate a a,a-Trifluorotoluene 10 0 10 0 60 0-140 100 <br /> Matrix Spike Dup 0090142-MSDI 5009051-02 <br /> Benzene 9/14/00 100 ND 101 ug/l 600-140 101 250 0 <br /> Toluene 100 ND 976 600-140 976 250 112 <br /> Ethyibenzene 100 ND 10 3 600-140 103 25 0 0 966 <br /> Xylenes(total) " 300 ND 308 600-140 103 25 0 0 966 <br /> Methyl tert-butyl ether 100 ND 134 600-140 134 25 0 1.48 <br /> Surrogate a,a,a-Trifluorotoluene 100 102 600-140 102 <br /> Batch; 0090156 Date Prepared- 9115100 Extraction Method EPA 50306(MeOH) <br /> Blank 0090156-BLKI <br /> Purgeable Hydrocarbons 9/15/00 ND ugll 500 <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethytbenzene ND " 0 500 <br /> Xylenes(total) ND 0 500 <br /> Methyl tert-butyl ether_ ND 250 <br /> Surrogate a a,a-Trifluorotoluene 100 103 600-140 103 <br /> LCS 0090156-BSI <br /> Benzene 9/15/00 100 100 ug/1 70 0-130 100 <br /> Toluene loo 978 700-130 97 8 <br /> Ethylbenzene too W5 700-130 105 <br /> es(total) 300 310 700-130 103 <br /> Sequoia Analytical-Sacramento •Refer to end of report for text of notes and definitions <br /> Page 7 of 1 I <br />