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Sequoia <br /> �oia 819 Striker Avenue, Suite 8 <br /> La Sacramento CA 95834 <br /> (916)921-9600 <br /> Analytical <br /> FAX(916)921 0100 <br /> mLw EMCON/IT-Cameron Park Project Don Rogers Sampled 2125100 <br /> 3939 Cambridge Road, Ste 220 Project Number 792773 /22613-100 003 Received 2125100 <br /> Cameron Park, CA 95682 Project Manager Mark Capps Reported 318/00 <br /> Total Purgeable Hydrocarbons (C6-02), BTEX and MTBE by DHS LUFT/Quality Control <br /> Sequoia Analytical- Sacramento <br /> 1 <br /> Date Spike Sample QC Reporting Lima Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Lima % Notes* <br /> Batch 0030072 Date Prepared 3/7100 Extraction Method EPA 5030_B McOM ' <br /> Blank 0030072-BLKI <br /> Purgeable Hydrocarbons 3/7/00 ND ug/l 500 <br /> Benzene r 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- <br /> a-Trifluorotoluene 100 107 600-140 107 ' <br /> LCS 0030072- <br /> Benzene 3/7100 100 977 ug/l 700-130 977 <br /> Toluene l0 0 976 700-130 976 <br /> Ethylbenzene 10 0 986 700-130 986 <br /> Xylenes(total) 300 295 _ 700-130 983 <br /> Methyi_tert-_butyl ether " 100 _ _ _9 30 _ 700-130 9_3_0 <br /> Surrogate a a a-Trtfluorotoluene l0 0 10 3W 60 0-140 103 <br /> Matrix Spike 0030072-MS1 S002374-03 <br /> Benzene 3/7100 100 ND 9 86 ug/l i 600-140 986 <br /> Toluene " 10 0 ND 100 600-140 100 <br /> Ethylbenzene 100 ND 992 600-140 992 <br /> Xylenes(total) 300 ND 298 600-140 993 — <br /> Methyl tert-_butyl ether 10 0 ND 9 98 600-140 998 _ <br /> Surrogate a a a-Tr fluorotoluene 100 103 60 0-140 103 <br /> Matrix Spike Dup 0030072-MSD1 5002374-03 ' <br /> Benzene 3/7100 10 0 ND 999 ug/l 600-140 999 250 131 <br /> Toluene ' too ND 995 600-140 995 250 0 501 <br /> tea. lbcn ene " i 0 0 tin Inn 60 0-140 100 25 0 0 803 <br /> Li lJ'l UIIIlLLl4b <br /> Xylenes(total) 300 ND 299 600-140 997 25 0 0 402 <br /> Methyl tert-butyl ether 100 ND 100 600-140 100 25 0 0200 <br /> Surrogate a a a-Trifluorotoluene 10 0 Jos 600-140 105 <br /> 1 <br /> Sequoia Analytical- Sacramento *Refer to end of report for text of notes and definition <br /> Page 3 of 4 <br />