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4 (650Sequoia 1551 Industnal Road <br /> 4 San Carlos CA 94070-4111 <br /> Analytical FAX <br /> ) 232-9600 <br /> (650) 232-9612 <br /> Environmental Resolutions Project Tosco(1) Sampled 5/11/99 to 5/12/99 <br /> 74 Digital Drive,Suite 6 Project Number Tosco 76#15886 Received 5/12/99 <br /> Novato,CA 94949 Pro ect Manager Keith Romstad R rted 5/27/99 <br /> "w``w-,.•,^ 1 "RfCxs- 3Gx t �•"�""r %i K <br /> Total-Purgea �e Hyslrocar6vns( a2�sd'By➢H5 Lifl `Qua '�i Control <br /> SYS"'✓ ,'"'�"'S" s� as '�' '•' s� S` x. <br /> aSe[�<<OIAkA�ytS1EAI�OS <br /> Date Spike Sample QC Reporting Linut Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 9050063 Date Prepared 5114/99 Extraction Method: EPA 5030B PIT <br /> Blank 9050063-BLKI <br /> Purgeable Hydrocarbons as Gasoline 5/14/99 ND ug/1 500 <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND OS00 <br /> _Xylenes(total) _ ND 0.500 <br /> Surrogate a aa-Tnfluorotoluene 100 817 600-140 817 <br /> LCS 9050063-BSI <br /> Benzene 5/14/99 100 900 ug/1 700-130 900 <br /> Toluene 100 906 " 700-130 906 <br /> Ethylbenzene " 100 914 " 700-130 914 <br /> Xylenes(total) 300 276 700-130 920 <br /> Surrogate a aa-Trfluorotoluene 100 781 600-140 781 <br /> six Sulk 9050063-MSI L905077-03 <br /> Benzene 5114/99 too ND 894 ug/I 600-140 894 <br /> Toluene 100 ND 851 600-140 851 <br /> Ethylbenzene 100 ND 864 600-140 864 <br /> _Xylenes(total) 300 ND _ 25 9 600-140 86.3 <br /> Surrogate a a a-Tnfluorotoluene IV100 899 " 600-140 899 <br /> Matrix Spike Duo 9050063-MSD1 L905077-03 <br /> Benzene S/14/99 100 ND 9 14 ug/l 600-140 914 250 221 <br /> Toluene 100 ND 8 72 600-140 87 2 250 2.44 <br /> Ethylbenzene 100 ND 881 " 600-140 881 25 0 195 <br /> Xylenes(total) " 300 ND 26 5 600-140 88.3 25 0 229 <br /> Surrogate aaa-Trifluorotoluene 160 8 62 " 600-140 862 <br /> Batch 9050112 Date Prepared 5/25/99 Extraction Method: EPA 5030B [P/TI <br /> Blank 9050112-BLKI <br /> Purgeable Hydrocarbons as Gasoline 5125199 ND ug/1 500 <br /> Benzene ND 0.500 <br /> Toluene ND 0 500 <br /> Ethylbeiizene ND 0.500 <br /> Xylenes(total) ND 0 500 <br /> Surrogate a aa-Trofluorotoluene 100 837 " 600-140 837 <br /> LC--S 9050112-BSI <br /> Benzene 5/25/99 850 ug/l. 700-130 850 <br /> T�ULucne " 865 700-130 865 <br /> oia Analytical-San Carlos 'Refer to end of report for text of nates and definitions <br /> Page 6 019 <br />