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819 Striker Avenue Suite 8 <br /> Sequoia Sacramento CA 95834 <br /> (916)921-96Q0 <br /> Analytical FAx(916)921-0I00 <br /> FAX <br /> sequoialabs comms <br /> IT Corporation-Sacramento Project Parkinson's ARCO, Stockton Sampled 9/21/00 <br /> 1433 N Market Blvd, Ste l Project Number 880-040 IA/01050000 Received 9121/00 <br /> Sacramento CA 95834 -Project Manager Kathleen Waldo Reported 10/6/00 <br /> Total Purgeable Hydrocarbons(C6-C12)and BTEX 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 0090278 Date Prepared 9/27/00 Extraction Method EPA 5030E McOH <br /> Blank 0090278-BLKI <br /> Purgeable Hydrocarbons 9/27/00 ND ug/I _ 500 <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Surrogate a a,a-Trifluorotoluene 100 11 1 600-140 111 <br /> LCS 0090278-BSI <br /> Benzene 9/27/00 100 - 103 ug/I 700-130 103 <br /> Toluene 100 10 2 700-130 102 <br /> Ethylbenzene 100 10 6 700-130 106 <br /> Xylenes(total) 300 31 7 700-130 106 ' - <br /> Surrogate a a a-Trifluorotoluene 100 10 7 600-140 107 <br /> - -Matrix Spike----- - — - - -0090278-MSI- --S009212-09 - - - - -- -- _ — - -- <br /> Benzene 9/27100 100 ND 102 ug/I 600-140 102 <br /> Toluene 100 ND 101 600-140 101 <br /> Ethylbenzene = -- - ' -- _ - 100 -- ND - 10 5 - "' _ - 600-140 105 <br /> Xylenes(total) 300 ND 316 600-140 105 <br /> Surrogate a a a-Trifluorotoluene --- - - -- 100 - - 10 7 = 600-140 107 - <br /> Matrix Spike Dap 0090278-MSDI 5009212-09 <br /> Benzene 9127/00 10 0 ND 101 ug/I 600-140 101 250 0 985 <br /> Toluene ` 10 0 ND 102 600-140 102 250 0 985 <br /> Ethylbenzene 100 ND 10 6 600-140 106 250 0 948 <br /> Xylenes(total) 300 ND 31 5 600-140 105 25 0 0 <br /> Surrogate a a a-Trifluorotoluene 100 106 600-140 106 <br /> Batch 0100023 Date Prepared 1012/00 Extraction Method EPA 5030B McOH - <br /> Blank 0100023-BLKI <br /> Purgeable Hydrocarbons 10/2/00 ND ng/1 500 <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Surrogate a,a a-Trtuorotoluene 100 103 600-140 103 <br /> - 5 <br /> LCS 0100023-BSI <br /> Benzene 10/2/00 10 0 103 ug/I 700-130 103 <br /> Toluene 10 0 102 700-130 102 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> Page 5 of 10 <br />