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Sequoia 885 Jarvis 5Drive <br /> 037 <br /> 4 <br /> (D Morgan Hill CA 95037 <br /> Analytical (408) 776 9600 <br /> FAX(408) 782-6308 <br /> Iwo <br /> Blaine Tech Services(Shell) Project Equiva Sampled 7/27/99 <br /> 1680 Rogers Avenue Project Number 2575 Country Club,Stockton Received 7/28/99 <br /> San Jose,CA 95112 Project Manager Ann Pember Re orted 8/18/99 <br /> Total Purgeable Hydrocarbons(C6-C12),BTEX and MTBE by DHS LUP'T/Quality Control <br /> SequoiaaAnalytical=Morgan Hili- <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Anal e <br /> Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 9080299 Date Prepared 8/10199 Extraction Method EPA 5030B IP/Tl <br /> Blank 9080299-B L K 1 <br /> Purgeable Hydrocarbons 8110199 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-Trifluorotoluene 100 9.10 700-130 940 <br /> LCS 9080299-BSI <br /> Purgeable Hydrocarbons 8110/99 250 250 ug/l 70 0-130_ 100 <br /> Surrogate a a a-Trifluorotoluene 11 100 _ 930 700-130 930 — — <br /> ;Matrix Spike 9080299-MSI 9070121-11 <br /> Purgeable Hydrocarbons 8/10/99 250 ND 187 ug/I 60 0-140 74 8 <br /> Surrogate a a a-Trifluorololuene Ir 100 840 700-130 840 <br /> _Matrix Spike Du p 9080299-MSD1 9070121-11 <br /> Purgeable Hydrocarbons 8/10/99 _ 250 ND 242 ug/l _ 600-140 968 250 256 _3 <br /> Surrogate a a a-Trifluorotoluene 100 760 w " - 700-130 760 <br /> Batch 9080300 Date Prepared 8/10199 Extraction Method EPA 5030B IP/TI <br /> Blank 9080300-BLKI <br /> Purgeable Hydrocarbons 8/10199 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 tent-butyl ether _ " _ _ ND _ "_ 250 <br />- - Surrogate a a a-Trifluorotoluene- "——--—10 0- 8 80—"--— 70 0=130-88 0 <br /> LCS 9080300-8S 1 <br /> Purgeable Hydrocarbons 8/10/99 250 256 ug/l 700-130 102 _-- <br /> Surrogate a s a-Trifluorotoluene 11100 12 6 700-130 126 <br /> Matrix Spike 9080300-MSI 9070121-15 <br /> Purgeable Hydrocarbons 8/10/99 250 ND 223 ug/l 60 0-140 89 2_ - _-- <br /> Surrogate aaa-Triuorotoluene 11100 11 1 700-130 111 <br /> Matrix Spike Dup 9080300-MSDI 9070121-15 <br /> Purgeable Hydrocarbons 8110/99 250 ND 234 ug/l 600-140 936 250 4 81 • <br /> Sequoia Analytical-Morgan Hill *Refer to end ofreport for text of notes and definitions <br /> Page 14 of 18 <br />