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r. <br /> 885 Jarvis Drive <br /> Sequoia Morgan Hili CA 95037., <br /> 4 (408) 776-9600 <br /> ID Analytical FAX (408) 782-6308 <br /> Blaine Tech Services(Shell) Project Shell(8 or more day TAT) Sampled 8/18199 <br /> I680 Rogers Avenue Project Number 990818-Y1/440 W Charter Wy, Stockton Received 8/19/99 <br /> San Jose,CA 95112 Protect Manager Ann Pember Reported 9/8/99 <br /> ' n v Total Purgeable Hydrocarbons(C6-C12),BTEX and MTBE by DHS I'/Quality Control - s - <br /> Sequoia Analytical-Morgan Hill )' - <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Nates* <br /> LCS 9080858-BSI <br /> Benzene 8/25/99 892 ug/l 700-130 <br /> Toluene 858 700-130 <br /> Ethylbenzene 902 700-130 <br /> Xylenes(total) _--_ 26 5 _ _ _-__ 700-130 --- <br /> Surrogate <br /> _Surrogate a a,a-Trifluorotoluene 100 8 78 700-130 878 <br /> Matrix Spike 9080858-MS1 9080661-04 <br /> Benzene 8/25/99 too ND 8 84 ug/l 600-140 884 <br /> Toluene loo ND 882 600-140 88 2 <br /> Ethylbenzene 100 ND 903 600-140 903 <br /> Xylenes(total) _ 300_ _ _ ND268 600-140 893 <br /> Surrogate a a a-Trifluorotoluene 100 9 7d 700-130 974 <br /> Matrix Spike Duo 9080858-MSD1 9080661-04 <br /> Benzene 8/25/99 10 0 ND 871 ug/l 600-140 871 25 0 148 <br /> Toluene too ND 8 71 600-140 871 250 125 <br /> Ethylbenzene 100 ND 887 600-140 887 25 0 1 79 <br /> Xylenes(total)_ __ 300 _ ND _ _ 265 _ _ 600-140 883 _ 250 1 13 _ _ <br /> Surrogate a a a-Difluorotoluene 100 933 700-130 933 <br /> Batch 9080886 Date Prepared 812.5199 Extraction Method EPA 5030B IP/TI <br /> Blank 9080886-B LK 1 T <br /> Purgeable_Hydro_c_arbons 8/25/99 ND ug/l Soo <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 100 986 700-130 986 <br /> LCS 9080886-BS] <br /> Benzene 8125/99 100 976 ug/l 700-130 976 <br /> Toluene 100 973 700-130 973 <br /> Ethylbenzene 100 950 700-130 95 0 <br /> Xylenes(total) IF300 28 7 4� 700-130 957 _ <br /> Surrogate a aa-Trifluorotoluene 11100 950 700-130 95 0 <br /> LCS Dun 9080886-BSD1 <br /> Benzene 8/25/99 too 951 ug/l 700-130 95 1 250 2 59 <br /> Toluene loo 958 700-130 958 25 0 1 55 <br /> Ethylbenzene 100 927 700-130 927 250 245 <br /> Sequoia Analytical-Morgan Hill *Refer to end of report for text of notes and definitions <br /> Page 7 of 9 <br />