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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 1 404 N Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(9,�5)988-,2673 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 ,5)- Analytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 Cambria Environmental Project EQUILON,420 Kettlemen LN Lodi,CA Sampled 2/4/99 270 Perkins Street Project Number N/A Received 2/4/99 Sonoma,CA 95476 Project Manager Mille Mu by Reported 2/5,9, 11199 Total Purgeable_Hydrocarbons(C6-C12),BTEX and MTBE by DHS LUFT/Quality Control Sequoia Analytical-Sacramento Date Spike Sampie QC Reporting Limit Recov RPD RPD Analyte Analyzed Level Result Result Units Recov Limits % Limit % Nat]s- Blank (continued) 9020062-BLKI Surrogate a a a-Trifluorotoluene 215/99 0200 0 210 mg/kg 600-140 105 LC.S 9020062-BSI Benzene 2/5/99 0200 0 224 mg/kg 700-130 112 Toluene 0200 0 226 700-130 113 Ethylbenzene 0200 0 229 700-130 114 Xylenes(total) 0 600 0 667 700-130 1 1 1 Methyl tert-butyl ether 0200 0 226 700-130 113 Surrogate a s a-Trifluorotoluene 0200 0 222 600-140 111 Matrix S ikp 9020Q 2-MSI 5902068-03 Benzene 2/5/99 0200 ND 0 196 mg/kg 600-140 98 0 Toluene 0200 ND 0202 600-140 101 Ethylbenzene 0200 ND 0208 600-140 104 Xylenes(total) 0 600 ND 0 617 600-140 103 Methyl tert-butyl ether 0200 ND 0 212 600-140 106 Surrogate a s a-Trifluorotoluene 0200 0 212 600-140 106 Matrix Spike Uun 9020062-MSDI 5902068-03 `mac �c c ?'5/99 0 ?nn vn n 197 n , rn n I jo 985 'S 0 0 509 Toluene 0200 ND 0 196 600-140 980 25 0 3 02 Ethylbenzene 0200 ND 0207 60 0-140 103 25 0 0 966 Xylenes(total) 0 600 ND 0 615 600-140 102 25 0 0 976 Methyl cert-butyi ether 0200 ND 0 218 600-140 109 25 0 279 Surrogate a s a-Trifluorotoluene 0200 0 217 600-140 108 Sequoia Analytical -Sacramento nts *Refer to end of report for lau of notes and defai S Sandra R Ranson,Client Services Representative Page 8 of I I .BAR.