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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9133 <br /> 404 N Wlget Lane Walnut Creek,CA 94598 (9Z5)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> IwoAnalytical 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 /> Blaine Tech Services Project Shell(1) Sampled 4/15/99 <br /> 1680 Rogers Avenue Protect Number Shell 2575 Country Club Blvd, Stockton Received 4/16/99 <br /> San Jose,CA 95112 Project Maraer Fran Thie R orted 516194 <br /> - Total Purgeable Hydrocarbons(CCrC 2�,BMX n MT73 by DH$Li)'FTlQuahty Coitr@ <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 Dup(congnuedl 9040106-MSD1 L904186-07 <br /> Surrogate a a,a-Tnfluorotoluene 4/21/99 10 0 103 u9/1 700-130 103 <br /> Batch 9040111 Date Prepared 4/22/99 Extraction Method EPA 5030B[PM <br /> Blank 9040111-BLKI <br /> Purgeable Hydrocarbons as Gasoline 4122199 ND ug/l 50 0 <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 500 - <br /> Surrogate a,a,a-Tnfluorotoluene 10 0 104 700-130 104 <br /> LCS 9040111-BSI <br /> Benzene 4/22/99 100 104 ug/l 700-130 104 <br /> Toluene 100 104 700-130 104 <br /> Ethylbenzene 100 11 1 700-130 111 <br /> Xylenes(total) 300 308 700-130 103 <br /> Surrogate a,a,a-Trzfluorotoluene 100 915 700-130 915 <br /> Matrix Spike 9040111-MSI L904208-11 <br /> TBenzene 4/22/9910 O�NDT10 3�ug/1�60 0_140T103 <br /> Toluene 10 0 ND 102 600-140 102 <br /> Ethylbenzene 10 0 ND 108 600-140 108 <br /> Xylenes(total) 300 ND 302 600-140 101 <br /> Surrogate a,a a-Trifluorotoluene 100 823 700-130 823 <br /> Matrix Spike Dup 9040111-MSDI L904208-11 <br /> Benzene 4/22199 100 ND 103 ug/l 600-140 103 250 0 <br /> Toluene 11 100 ND 10 4 600-140 104 25 0 194 <br /> Ethylbenzene 100 ND 109 600-140 109 25 0 0 922 <br /> Xylenes(total) 300 ND 303 600-140 101 25 0 0 <br /> Surrogate a aa-Trifluorotoluene 100 831 700-130 831 <br /> Batch. 9040112 Date Prepared 4/22/99 Extraction Method EPA 5030B [P/T1 <br /> Blank 9040112-BLKI <br /> Purgeable Hydrocarbons as Gasoline 4/22199 ND ug/l 50 0 <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 500 <br /> Sequoia Analytical- San Carlos *Refer to end of report for text of notes and definitz10 <br /> Page 23 of 32 <br />