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819 Striker Avenue Suite 8 <br /> Sequoia Sacramento CA 9834 <br /> (916)921-9600 <br /> Analytical FAX(916}slabs921 c 00 <br /> www sequollabs om <br /> i <br /> EMCON/IT-Cameron Park Project Don Rogers Sampled 8/16100 1 <br /> 3939 Cambridge Road, Ste 220 Project Number 880039 IA/01050000 Received 8117100 <br /> Cameron Park, CA 95682 Pro ect Manager Mark Capps Reported 8/31/00 <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 0080331 Date Prepared 8128/00 Extraction Method EPA 5030E(MeOH) ' <br /> Blank 0080331-BLK1 <br /> Purgeable Hydrocarbons `8128/00 ND ug/l 500 <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 2 50 ' <br /> Surrogate a a a-Trefluorotoluene 100 8 70 600-140 870 <br /> LCS 0080331-BSI <br /> Benzene 8/28/00 100 8 95 ug/l 700-130 895 <br /> Toluene 100 9 11 700-130 91 1 <br /> Ethylbenzene 100 893 700-130 893 <br /> Xylenes(total) 300 269 700-130 897 <br /> Methyl tert-butyl ether 100 881 700-130 88 1 <br /> Surrogate a a,a-Tr:fluorotoluene 100 835 600-140 835 <br /> Matrix Spike 0080331-MSI S008237-01 ' <br /> Benzene 8/28/00 100 ND 941 ug/l 600-140 941 <br /> Toluene 100 ND 9 16 60 0440 916 <br /> Ethylbenzene 100 ND 900 600-140 900 ' <br /> Xylenes(total) 300 ND 272 600-140 907 <br /> Methyl tert-butyl ether " too ND 102 600-140 102 <br /> Surrogate a,a,a-Trifluorotoluene 111009 9 13 600-140 913 ' <br /> Matrix Spike_Dup 0080331-MSDI S008237-01 <br /> Benzene 8128/00 too ND 946 ug/l 600-140 946 25 0 0 530 <br /> Toluene 100 Nil 907 600-140 907 25 0 0 987 <br /> Ethylbenzene i 0^v i:D 9 04 60 0-1:0 904 25 0 1443 <br /> Xylenes(total) 300 - ND 273 600-140 910 250 0 330 <br /> Methyl tert-butyl ether _" 100 ND 943 600-140 943 25 0 785 <br /> Surrogate a,a,a-Trefluorotoluene 100 9 05 600-140 90 5 ' <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and defrnitio <br /> Page 3 of 4 <br />