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Sequoia 819 Striker Avenue,Suite 8 <br /> Sacramento,CA 95834 <br /> (916)921-9600 <br /> Analytical FAX(916)921-0100 <br /> Cambria Environmental Project: Equilon 440 W Charter Way,Stockton Sampled: 6/25/99 <br /> 270 Perkins Street Project Number: 88870583 Received: 6/25/99 <br /> Sonoma,CA 95476 Project Manager: Wayne Chiu Reported: 6/29,7/8-9/99 <br /> Total Purbeable Hydrocarbons(C6-C12)and BTEX by DHS LUFT/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> IAnalvte Analvzed Level Result Result Units Recov. Limits % Limit % Notes* <br /> Matrix Spike Dun 9060408-MSD1 S906335-04 <br /> Benzene 6/28/99 0.200 ND 0.171 mg/kg 60.0-140 85.5 25.0 0.583 <br /> Toluene 0.200 ND 0.167 60.0-140 83.5 25.0 5.25 <br /> Ethylbenzene 0.200 ND 0.174 60.0-140 87.0 35.0 1.14 <br /> Xylenes(total) 0.600 ND 0.523 60.0-140 87.2 25.0 1.71 <br /> Surrogate: a,a,a-Trifluorotoluene 0.200 0.149 60.0-140 74.5 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions. <br /> Page 13 of 18 <br />