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Sequoia 885 Jarvis Drive <br /> V Morgan Hill CA 95037 <br /> (408) 776-9600 <br /> Iwo Analytical <br /> FAX(408) 782-6308 <br /> 0 <br /> Blaine Tech Services(Chev) Project Chevron 9-9840(4344 Waterloo Rd,Stockton) Sampled 9/20/99 <br /> 1680 Rogers Avenue Project Number 990920-G3 ReLelved 9/21/99 <br /> San Jose CA 95112 Project Manager Christine Lillie Reported 10/6/99 <br /> Total Purgeable Hydrocarbons(C6-C12), BTEX and MTBE by DHS LUFT/Quality Control <br /> Sequoia Analytical -Morgan Hill <br /> Date Spike Sample QC Reporting Limit Rccov RPD RPD <br /> IAnalvte Analvzed Level Result Result Units Reco% Limits % Limit % Notes* <br /> -Matrix Spike Dun(continued) 9090914-MSD1 M909681-01 _ <br /> Surrogate a a a-Trifluorotoluene 9/30/99 100 824 ug/1 � 700-130 824 W <br /> Batch 9100056 Date-Prepared 10/4/99 Extraction Method EPA 5030B [PIT] <br /> Blank 9100056-BLKI <br /> Purgeable Hydrocarbons 10/4199 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 250 <br /> Surrogate a a a-Tr:fluorotoluene too 816 700-130 816 <br /> LCS 9100056-BSI <br /> Wogable H}drocarbons _ I0/4/99 250 _ 226 _ug/l _ _ 700-130 904 <br /> ate aaa-Tr Iuoro&&ene 11100 950 70 0-130 950 <br /> Matrix Spike 9100056-MSl M909830-04 <br /> _Purgeable Hydrocarbons _ _ 10/4/99 _ 250 ND 164 ug/l 600-140 656 <br /> Surrogate a ci a-Irrfluar otoluene 100 --_ -9 52 - - 700-130 95 7 -- -- ----—� <br /> MatrLX Spike Dun 9100056�MSDI M909830-04 <br /> Purgeable Hydrocarbons_ 10/4/99 250 ND 205 ugtl 600-140 820 250 222 _ <br /> Surrogate a a a-Trifluorotoluene 100 997 700-130 997 <br /> r _ <br /> Sequoia Analytical -Morgan Hill �. *Refer to end of report for text of notes and definitions <br /> Page 5 of 7 <br />