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Sequoia <br />Analytical <br />6747 Sierra Court, Ste J <br />ntthlin CA QASAR <br />Project Chevron 9-5775, Lodl , CA <br />Project Number 346408 85 <br />,--rt Manager Deanna L Harding <br />819 Striker Avenue Suite 8 <br />Sacramento CA 9583.4 <br />(916) 921-96W <br />FAX (916) 921-0100 <br />www sequolalabs com <br />5amplea aftz)rvv <br />Received 5126/00 <br />Reported 6112/00 <br />Total Purgeable Hydrocarbons (C6 -C12) and BTLX by DHS LUFT/Quality Control <br />Sequoia Analytical - Sacramento <br />' <br />Date <br />Spike <br />Sample <br />QC <br />Reporting i.imit <br />tcecuv <br />nru <br />I%X.+ <br />,Fwalyte <br />Analyzed <br />Level <br />Result <br />Result <br />Units <br />Recov Limits <br />% <br />Limit <br />%Notes* <br />LCS (continued) <br />0060080-BS1 <br />]0 7 <br />UO <br />70 0-130 <br />107 <br />Ethylbenzene <br />6/6100 <br />too <br />319 <br />',I <br />700-130 <br />106 <br />Xylenes (total) <br />„ <br />300 <br />100 <br />11 1 <br />600-140 <br />111 <br />Surrogate a,a,a-Trifluorotoluene <br />Matrix Spike <br />0060080-11VISI <br />S005381-01 <br />939 <br />ug/i <br />600-140 <br />939 <br />Benzene <br />616/00 <br />100 <br />100 <br />ND <br />ND <br />920 <br />600-140 <br />92.0 <br />Toluene <br />100 <br />ND <br />958 <br />600-140 <br />958 <br />Ethylbenzene <br />300 <br />ND <br />284 <br />600-140 <br />947 <br />Xylenes (total) <br />100 <br />107 <br />600-140 <br />107 <br />Surrogate a,a,a-Trifluorotoluene <br />Matrix Spike D" <br />0060080 -MSD 1 <br />5005381-01 <br />ND <br />104 <br />ug/l <br />600-140 <br />304 <br />250 <br />102 <br />a <br />6/6/00 <br />10 0 <br />100 <br />ND <br />103 <br />600-140 <br />103 <br />250 <br />11.3 <br />e <br />#enzene <br />too <br />ND <br />108 <br />600-140 <br />108 <br />250 <br />120 <br />30 0 <br />ND <br />320 <br />600-140 <br />307 <br />250 <br />12.2 <br />Xylenes (total) <br />100 <br />!0 7 <br />60 0-140 <br />107 <br />Surrogate a,a,a-Trifluorotoluene <br />0 <br />Sequoia Analytical - Sacramento *,Refer to end of report for text of notes and definitions <br />Page 7 of 10 <br />