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�80 Chesapeake Drive Redwood City,c 063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia '.�<;04 N.Wiget Lane Walnut Creek,C'-1598 (925)988-9600 FAX(9Z5)1988-9673. <br /> s <br /> Sequoia <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916)921-9600 FAX(916)92t-0100'• <br /> 1455 McDowell Blvd.North,Ste. D Petaluma,CA 94954 (707),792-1865 FAX(707)792-0342 <br /> Analytical 1551 Industrial Road San Carlos,CA 94070-41 1 l (650)232-9600 FAX(650)232-9612 <br /> Cambria Environmental Project: EQUILON, 1313 E. Charter Way,Stockton, CA Sampled: 4129/99 <br /> 270 Perkins Street Project Number: N/A Received: 4/29/99 <br /> Sonoma,CA 95476 Project Manager: Aubrey Cool Reported: 5/4,7/99 <br /> Total Purgeable Hydrocarbons(C6-C12),BTEX and MTBE by DHS LUFT/Quality Control - <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov. Limits % Limit % Notes* <br /> Bztf h: 9040339. Date Prepared: 4130199 Extractju Method,"EPA 503Q]i( CIHI <br /> Blank 9040339-B L K 1 <br /> Purgeable Hydrocarbons 4/30/99 ND mg/kg 1.00 <br /> Benzene ND 0.00500 I <br /> Toluene ND 0.00500 <br /> Ethylbenzene ND 0.04500 <br /> Xylenes(total) ND 0.00500 <br /> Methyl tert-butyl ether ND 0.0500 <br /> Surrogate: a,a,a,-Trifluoroioluene 0.200 0.193 60.0-140 96.5 <br /> LSU 9040339-BSI <br /> Benzene 4/30/99 0.200 0.207 mg/kg 70.0-130 103 <br /> Toluene 0.200 0.223 70.0-130 112 <br /> Ethylbenzene 0.200 0.224 70.0-130 112 <br /> Xylenes(total) 0.600 0.604 70.0-130 101 <br /> Methyl tert-butyl ether <br /> 0.200 0.190 70,0-130 95.0 <br /> Surrogate: a,a,a-Trifluorotoluene 0.200 0.197 60.0-140 98.5 <br /> Matrix SpiJSnike 9040339-M51 5904400-01 <br /> Benzene 4/30199 0.200 ND 0.176 mg/kg 60.0-140 88.0 <br /> Toluene " 0.200 ND 0.194 60.0-140 97.0 <br /> Ethylbenzene 0.200 ND 0.196 60.0-140 98.0 <br /> Xylenes(totai) 0.600 ND 0.537 60.0-140 89.5 <br /> Methyl tert-butyl ether 0.200 ND 0.168 60.0-140 84.0 <br /> Surrogate: a,a,a-Trifluorotoluene 0200 0.187 60.0-140 93.5 <br /> Matrix Spilce Dun 0440332-MSD1 S90.4490-01 <br /> Benzene 4130199 0.200 ND 0.177 mg/kg 60.0-140 88.5 25.0 0.567 <br /> Toluene 0.200 ND 0.184 60.0-140 92.0 25.0 5.29 <br /> Ethylbenzene 0.200 ND 0.196 60.0-140 '98.0 25.0 0 <br /> Xylenes(total) 0.600 ND 0.540 60.0-140 90.0 25.0 . 0.557 <br /> Methyl tert-butyl ether 0.200 ND 0.175 60.0-140 87.5 25.0 4.08 <br /> Surrogate: a,a,a-Trifuorotoluene 0.200 0.195 60.0-140 97.5 - <br /> Batch. 9050005 1? tc Prepared: 512199 E_Ctl'action Method: ,EEA.5030E(P' O H) <br /> Man Ec 9050005-BL K 1 <br /> Purgeable Hydrocarbons 5/2/99 ND mg/kg 1.00 <br /> Benzene ND 0.00500 <br /> Toluene ND 0.00500 <br /> Ethylbenzene ND 0.00500 <br /> Xylenes(total) ND 0.00500 <br /> Methyl tert-butyl ether ND <br /> 0.0500 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions. <br /> .I <br /> Stan ra R. Hanson;Client Services Representative Page I i of 15 <br />