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68 rapeake Drive Redwood City,CA 940C1 (650) 364-9600 FAX(650)364-9133 <br /> Sequoia 404 N Mliget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)i8b-96731W" <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical <br /> 1455 McDowell Blvd North,Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos,CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> 0 <br /> Sequoia-Redwood City Project Kayvan Kimyai Sampled 2/26/99 <br /> 680 Chesapeake Drive - Project Number 9903085-(Cambna) Received 3/3/99 <br /> Redwood City,CA 94063 Project Manager Ka an Kim ai Reported 3/16/99 <br /> M'I'- <br /> mr-41M�1�'Mai <br /> E ; <br /> San�Carlo� <br /> _ Date _ Spike Sample QC Reporting Limit Recov RPD RPD <br /> lAnalyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 9030033 Date Prepared 3/9/99 Extraction Method EPA 5030E PIT <br /> Blank 9030033-BLK1 <br /> Purgeable Hydrocarbons as Gasoline 3/9/99 ND ug/1 500 <br /> Benzene11 ND Iti 0 500 <br /> TolueneIt ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Surrogate a a a-Tri lucrotoluene 100 104 600-140 104 <br /> LCS 9030033-BS1 <br /> Purgeable Hydrocarbons as Gasoline 3/9/99 250 204 ug/1 700-130 816 <br /> Surrogate a,a,a-TrifTuorotoluene IF 100 13 6 600-140 136 1 <br /> Matrix Spike 9030033-MSI L903012-01 <br /> Purgeable hydrocarbons as Gasoline 319/99 250 220 ug/1 600-140 <br /> Surrogate a a,a-Tri luorotoluene to100 992 F1 600-140 992 <br /> Matrix Spike Duip 9030033-MSDI L903012-01 <br /> Purgeable Hydrocarbons as Gasoline 3/9/99 250 233 ug/l 600-140 250 <br /> _Surrogate_a,a,a-Tnfluorotoluene 100 9 61 600-140 961 <br /> Batch 9030041 Date Prepared_ 3/10/99 Extraction Method EPA 5030B [P/Tl <br /> Blank 9030041-BLK1 <br /> Purgeable Hydrocarbons as Gasoline 3110199 ND ug/1 500 <br /> Benzene ND 11 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Surrogate a a a-Tnfluorotoluene 100 953 600-140 953 <br /> LCS 9030041-BS1 <br /> Benzene 3/10/99 100 8 77 ugll 700-130 87 7 <br /> Toluene 100 8 73 " 700-130 873 <br /> Ethylbenzenc 100 874 700-130 874 <br /> Xylenes(total) 300 261 700-130 870 <br /> Surrogate a a,a-Trifluorotoluene 100 886 600-140 886 <br /> Matrix Spike 9030041-MSI L903022-04 <br /> Benzene 3/10/99 100 ND 927 ug/1 600-140 927 <br /> Toluene 100 ND 9 22 600-140 922 <br /> Ethylbenzene 100 ND 925 600-140 925 <br /> Xylenes(total) 300 ND 277 600-140 92 3 <br /> Sequoia Analytical-San Carlos 'Refer to end of report for text of notes and def nitto <br /> Page 8 of I I <br />