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s819 Striker Avenue Suite 8 <br /> Sequoia Sacramento CA 95834 <br /> I!D (916) 921-9600 <br /> Analytical FAX(916)92.1-0100 <br /> i <br /> EMCON/IT-Sacramento Project ARCO 2168, Stockton, CA Sampled 2125/00 <br /> 1433N Market Blvd,#1 Protect Number 804599 Received 2128/00 <br /> Sacramento,CA 95834 Project Manager Dave Foley Reported 318/00 <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 /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 0030063 Date Prepared 316100 Extraction Method EPA 5030B McOH <br /> Blank 0030063-BLKI <br /> Purgeable Hydrocarbons 316/00 ND ug/1 Soo <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Methyl tert-butyl ether ND 250 <br /> Surrogate a a a-Trtf2uorotoluene 10 0 981 600-140 981 <br /> LCS 0030063-BSI <br /> Benzene 316/00 too 971 ug/1 700-130 97 1 <br /> Toluene 100 969 700-130 969 <br /> Ethylbenzene 100 985 700-130 985 <br /> Xylenes(total) 300 294 700-130 980 <br /> Jftthyl tert-butyl ether _ 100 J__ 845 70_0-130 845 <br /> rugate a,a,a-Trrfluorotoluene 100 9 04 600-140 904 <br /> Matrix Spike 0030063-MS1 5002345-04 <br /> Benzene 3/6100 100 ND 101 ug/l 600-140 101 <br /> Toluene 100 ND 100 600-140 100 <br /> Ethylbenzene 100 ND 10 1 600-140 101 <br /> Xylenes(total) 300 ND 302 600-140 101 <br /> _Methyl tert-butyl ether 100 ND _ 102 600-140 102 <br /> Surrogate a a,a-Trifluorotoluene 100 105 600-140 105 <br /> _Matrix Spike Dup 0030063-MSD1 S002345-04 <br /> Benzene 3/6/00 too ND 988 ug/l 600-140 988 25 0 220 <br /> Toluene 100 ND 9 87 " 600-140 987 25 0 131 <br /> Ethylbenzene too ND 997 600-140 997 25 0 130 <br /> Xylenes(total) 300 ND 296 600-140 98 7 250 230 <br /> Methyl tert-butyl ether 100 ND 969 " 600-140 969 250 513 <br /> Surrogate a a,a-Trifluorotoluene 100 100 600-140 100 <br /> Batch 0030072 Date Prepared 317100 Extraction Method EPA 50308 CMe <br /> Blank 0030072-BLK1 <br /> Purgeable Hydrocarbons 317/00 ND ug/l 500 <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzenc ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Methyl tert-butyl ether ND 250 <br /> Imiruoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> Page 6 of 9 <br />