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Sequoia los Industrial Road <br /> San Carlos CA 94010-411 I <br /> 4,-!D— (650) 232-9600 <br /> Analytical FAX(650) 232-9612 <br /> Blaine Tech Services Project Equiva(2) Sampled 8/20199 <br /> 1680 Rogers Avenue Project Number 6131 Pacific Ave, Stockton/990820-X1 Received 8123199 <br /> San Jose,CA 95112 Project Manager Ann Pember Reported 9/7/99 <br /> � �' TotalaPEnrgeable Hydrocarbons(C6=C12),?BTEX and MTBE by DHS LUFT1Qua11ty Control ti,� <br /> �xi` P' ��_ e E rS�QI�Otd AIIAytACa x,5811 C8r1o3 <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units RecGv Limits % Limit % Notes* <br /> --Batch -9080171 __ — _ _ __ _ _ -Date Prepared 8/31/99 — _ —_ _ _Extraction Method EPA 5030B [P/T1 <br /> Blank 9080171-BLK1 <br /> Purgeable Hydrocarbons as Gasoline 8/31/99 ND ug/1 500 <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 500 <br /> Surrogate a a a-Trifluorotoluene 10 0 112 700-130 112 <br /> LCS 9080171-SSI <br /> Purgeable Hydrocarbons as Gasoline 8/31/99 250 268 ug/l 700-130 107 <br /> Surrogate a a,a-Trifluorotoluene IF10 0 9 88 700-130 98 8 <br /> Matrix Spike 9080171-MSI L908171-05 <br /> Purgeable Hydrocarbons as Gasoline 8131199 250 _ ND 261 ug/1 60 0-140 104 <br /> Surrogate a,a a-Trifluorotoluene 1110 0 727 700-130 72 7 <br /> Matrix Spike Duy 9080171-MSD1 L908171-05 <br /> Purgeable Hydrocarbons as Gasoline 8131199 250 ND 218 ug/1 600-140 872 250 17 6 <br /> urrogate a a a-Irifluorotoluene 10 0 4-90" 70 0-130-49 0 2 <br /> Batch 9090007 Date Prepared 911199 Extraction Method EPA 50305 PIT <br /> Blank 9090007-BLK1 <br /> Purgeable Hydrocarbons as Gasoline_ 911/99 _ - -- _-_ - __- __ ND ug/1 - 50 0 - - - -- - <br /> Benzene tiND 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Methyl tert-butyl ether ND 500 <br /> Surrogate a,a,a-Trifluorotoluene 100 801 700-130 80 1 <br /> LCS 9090007-BSI <br /> Benzene 9/1199 too 769 ug/1 700-130 76 9 <br /> Toluene 10 0 770 700-130 770 <br /> Ethylbenzene l0 0 797 700-130 79 7 <br /> Xylenes(total) 300 23 8 700-130 79 3 <br /> Surrogate a a a-Triuorotoluene 10 0 780 700-130 78 0 <br />_ Matrix Spike 9090007-MSI L908222-01 <br /> Benzene 9/1199 100 ND 7 80 ug/1 600-140 780 <br /> Toluene 100 ND 790 600-140 79 0 <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and def nin <br /> Page 10 of 14 <br />