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Sequoia 885 Jarvis 5037 <br /> Morgan Hill CA 95037 <br /> (408) 776-9608 <br /> Analytical <br /> FAX (408) 782-5308 <br /> • <br /> Blame Tech Services(Shell) Protect 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 LIIFT/Quality Control <br /> Sequoia Analytical=Morgdn=Hdl <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Matrix Spike 9080390-MSI 9080174-01 <br /> Benzene 8/11/99 100 ND 850 ug/l 600-140 850 <br /> Toluene 100 ND 9 80 600-140 98 0 <br /> Ethylbenzene 100 ND 990 600-140 990 <br /> Xylenes(total) 300 ND 31 0 60_0-140 __103 <br /> Surrogate a,a,a-Trifluorotoluene 100 950 T 706-130 95 0 <br /> _Matrix Spike Dup 9080390-MSDI 9080174-01 <br /> Benzene 8/11/99 10 0 ND 860 ug/l 600-140 860 25 0 1 17 <br /> Toluene 100 ND 950 600-140 95 0 250 3 11 <br /> Ethylbenzene 100 ND 100 600-140 100 250 101 <br /> Xylenes(total) _ 300 ND 31 0 _ " __600-140 103 _2_5_0 _0 <br /> Surrogate a a a-Trrfluorotoluene -� "� 100 9.10 - — 700-130 94 D <br /> Batch 9080434 Date Prepared 8112/99 Extraction Method EPA 5030B IP/Tl <br /> Blank 9080434-B LK 1 <br /> Purgeable Hydrocarbons 8/12/99 ND ugJl 500 <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethvlbenzer.e ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Methyl Cert-butyl ether ND 2 50 <br /> Surrogate a,a a-Trrfluorotoluene 1D 0 9 9D 70 0-130 99 0 <br /> LCS 9080434-BSI <br /> Purgeable Hydrocarbons _ 8112/99_ 250 _ 270 ug/I _ 70 0-130 _108_ <br /> Surrogate a a a-Trefluorotoluene 1, 100 960 `— 700-130 960 <br /> LCS Dup 9080434-BSD1 <br /> Purgeable Hydrocarbons 8/12/99 250 _ _ 272 uu/l _70 0-130 _1_09 25 0 0 922 ___ <br /> Surrogate -a a a-Trifluorotoluene - if ---10 0 - -- —10-1 �- 70 0-130-101 --� — <br /> Matrix Spike 9080434-MSI 9080361-01 <br /> Purgeable Hydrocarbons 8/12/99 250 ND - 270 ug/1 600-140 108 <br /> Surrogate a a a-Trlfluorotoluene 11 100 100 01 700-130 100 <br /> Matrix Spike Dup 9080434-MSD1 9080361-01 <br /> Purgeable Hydrocarbons 8/12/99—_ 250 ND _267 _ug/l 600-140 107 250 0 930 --T <br /> Surrogate a,a a-Trefluorotoluene 100 990 700-130 990 <br /> 0 <br /> Sequoia Analytical-Morgan Hill *Refer to end of report for text of notes and definitions <br /> Page 16 of 18 <br />