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` Sequoia San Carlos5 CA Industrial <br /> 11 <br /> (650) 232-9600 <br /> Analytical FAX (650) 232-9612 <br /> Blaine Tech Services Protect Equiva(2) Sampled 8/20/99 <br /> 1680 Rogers Avenue Protect Number 6131 Pacific Ave, Stockton/990820-X I Received 8123/99 <br /> San.lose,CA 95112 Project Manager Ann Pember Reported 9/7/99 <br /> Total Purgeable Hydrocarbons(C6-C12),STEX and MTBE by DHS LUFT/Quality Control <br /> Sequoia Analytical-San Carlos <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % limit % Notes* <br /> Matrix Spike(continued) 9090007-MS1 L908222-01 <br /> Ethylbenzene 9/1199 100 ND 8 14 ug/1 600-140 814 <br /> Xylenes(total) 300 ND 242 600-140 807 <br /> Surrogate a,a,a-Trifluorotoluene 100 819 700-130 819 <br /> Matrix Spike Dun 9090007-MSD1 L908222-01 <br /> Benzene 9/1/99 10 0 ND 8 14 ug/l 600-140 814 250 427 <br /> Toluene 11100 ND 8 15 600-140 815 250 3 12 <br /> Ethylbenzene 100 ND 836 600-140 836 250 267 <br /> Xylenes(total) 300 ND 25 1 600-140 83 7 250 365 <br /> Surrogate a a,a-Trifluorotoluene 100 751 700-130 731 <br /> Batch 9090008 Date Prepared 911/99 Extraction Method EPA 5030E IP/Tl <br /> Blank 9090008-BLKI <br /> P able Hydrocarbons as Gasoline 9/1/99 ND ug/I 50 0 <br /> e 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-Trfluorotoluene to 100 123 700-130 123 <br /> LCS 9090008-13S1 <br /> Benzene 9/1/99 100 9 83 ug/1 700-130 983 <br /> Toluene 100 997 700-130 997 <br /> Ethylbenzene 100 9 71 700-130 97 1 <br /> Xylenes(total) to300 292 11700-130 973 <br /> Surrogate a,a,a-Trifluorotoluene 100 11 1 700-130 111 <br /> I <br /> Matrix Spike 9090008-MSI L908197-02 <br /> Benzene 9/l/99 100 ND 104 ug/l 600-140 104 <br /> Toluene 100 ND 102 600-140 102 <br /> Ethylbenzene 100 ND 102 600-140 102 <br /> x„lees tr,.�n 3n n Nn 3n 6 KO()-1An102 <br /> Surrogate a a a-Trifluorotoluene 10 0 112 or 700-130 111 <br /> Matrix Spike Duo 9090008-MSDI L908197-02 <br /> Benzene 9/1/99 100 ND 997 ug/l 600-140 99 7 250 422 <br /> Toluene 11 100 ND 9 86 600-140 98 6 25 0 339 <br /> Ethylbenzene " 100 ND 970 600-140 97 0 25 0 5 03 <br /> Xylenes(total) 300 ND 294 600-140 98 0 250 400 <br /> Sate a a a-Trfluototoluene 100 10 3 700-130 103 <br /> Sequoia Analytical -San Carlos *Refer to end of report for text of notes and definitions <br /> Page I i of 14 <br />