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) N <br /> Striker <br /> e, Suite 8 <br /> Sequoia 819Sac Sacramento, 95834 <br /> (916) 921-9600 <br /> Analytical <br /> FAX(916) 921-0100 <br /> EMCON/lT-Sacramento Project ARCO 2130 Stockton,CA Sampled 3116100 <br /> 1433 N Market Blvd,#1 Project Number 803879 Received 3/17100 <br /> Sacramento,CA 95834 Project Manager Dave Foley Reported 3/24100 <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 /> 1,knalyte Analyzed Level Result Result Units Recov Limits % L1mit % Notes* <br /> Batch 0030246 Date Prepared 3/23100 Extraction Method EPA 5030B McOH <br /> Blank 0030246-BLK1 <br /> Purgeable Hydrocarbons 3123/00 ND ug/l 500 <br /> Benzene 11ND 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 w_ _ <br /> Surrogate a,a,a-Trifluorotoluene 100 997 600-140 997 <br /> LCS 0030246-BSI <br /> Benzene 3123100 100 994 ug/l 700-130 994 <br /> Toluene 100 102 " 700-130 102 <br /> hylbenzene 100 10 1 700-130 101 <br /> nes(total) 300 281 700-130 93 7 <br /> _ thyl_tert-butyl ether too 927 700-130 92 7 <br /> Surrogate a,a,a-Trtfluorotoluene 100 100 600-140 100 <br /> Matrix Spike 0030246-MSI 5003242-11 <br /> Benzene 3/23100 too ND 9 71 ug/l 600-140 971 <br /> Toluene 100 ND 100 600-140 100 <br /> Ethylbenzene 100 ND 978 600-140 978 <br /> Xylenes(total) 300 ND 272 600-140 907 <br /> _Methyl tert-butyl ether100 _ _ND991 60_0-14099 1 <br /> Surrogate a a a-Trifluorotoluene 100 109 " 600-140 109 <br /> Matrix Spike Du p 0030246-MSD1 S003242-11 <br /> Benzene 3/23100 100 ND 972 ug/l 600-140 972 250 0 103 <br /> Toluene 100 ND 933 600-140 933 250 6 93 <br /> Ethylbenzene too ND 997 600-140 997 250 192 <br /> Xylenes(total) 300 ND 288 600-140 960 250 568 <br /> Methyl tert-butyl ether " 100 ND 102 600-140 102 25 0 2 88 <br /> Surrogate a a a-Trifluorotoluene 100 109 600-140 109 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> I <br /> Page 6 of 9 <br />