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t; <br /> 819 Striker Avenue Suite 8 <br /> Sequoia SacramentoC 95834 <br /> (91916)922 1-96009600 <br /> 4 <br /> FAX(916)921-0100 <br /> Analytical www sequoialabs com <br /> SECOR International-Rancho Cordova Project ARCO 595, Stockton,CA Sampled 6116/00 <br /> 3017 Kilgore Road, Suite 100 Project Number NIA Received 6/16100 <br /> Rancho Cordova,CA 95670 Project Manager Rusty Benkosky Reported 6130100 <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 % Limit % Notes* <br /> Blank{continued 0060309-BLK1 <br /> Surrogate a a a-Trifluorotoluene 6/29/00 100 956 u9/1 600-140 956 <br /> LCS 0060309-13S1 <br /> Benzene 6/29100 10 0 100 ugll 700-130 100 <br /> Toluene 100 977 700-130 977 <br /> Ethylbenzene 100 956 700-130 95 6 <br /> Xylenes(total) 300 263 700-130 87 7 <br /> Methyl tert-butyl ether too 126 700-130 126----- <br /> Surrogate <br /> 26 ___Surrogate a,a,a-Trifluorotoluene 100 9 10 600-140 910 <br /> Matrix Spike 0060309-MS1 5006308-10 <br /> Benzene 6129100 100 ND 940 ug/l 600-140 940 <br /> Toluene 100 ND 928 600-140 92 8 <br /> enzene 10 0 ND 9 10 600-140 910 <br /> .9es(total) 300 ND 25 2 600-140 840 <br /> Methyl tert-butyl ether 100 ND 129 600-140 129 <br /> Surrogate a a a-Trlfluorotoluene 100 990 600-140 990 <br /> _Matrix Smike Dun 0060309-MSD1 5006308-10 <br /> Benzene 6129/00 100 ND 878 ug/1 600-140 878 250 682 <br /> Toluene 100 ND 885 600-140 885 250 474 <br /> Ethylbenzene 100 ND 854 600-140 854 25 0 6.35 <br /> Xylenes(total) 300 ND 236 600-140 78 7 250 652 <br /> Methyl tert-butyl ether too ND 120 600-140 120 250 723 <br /> Surrogate a,a,a-Trrfluorotoluene " 100 940 600-140 940 <br /> Batch 0060312 Date Prepared 6129100 Extraction Method EPA 5030B McOH <br /> Blank 0060312-BLKI <br /> Purgeable Hydrocarbons 6/29100 ND ug/1 500 <br /> Benzene ND 0 500 <br /> Toluene ND It0 500 <br /> Ethylbenzene ND It0 500 <br /> Xylenes(total) ND „ 0 500 <br /> Methyl tert-butyl ether ND 2 50 <br /> Surrogate a a,a-Trrfluorotoluene 100 968 600-140 968 <br /> LCS 0060312-BSI <br /> Benzene 6/29/00 100 109 ug/1 700-130 109 <br /> Toluene too 109 700-130 109 <br /> Ethylbenzene 100 11 1 700-130 111 <br /> Vs(total) 300 33 1 700-130 110 <br /> Sequoia Analytical Sacramento *Refer to end ofreport for test of notes and definitions <br /> Page 5 of 9 <br />