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Sequoia <br />819 Striker Avenue Suite 8 <br />Sacramento CA 95834 <br />Chevron 9-5775, Lodi , CA <br />(916)921-9600 <br />Analytical <br />FAX (916) 921-0100 <br />www sequolalabs <br />lettler-Ryan - Dublin <br />Project <br />Chevron 9-5775, Lodi , CA <br />Sampled <br />8/16/00 <br />747 Sierra Court, Ste J _ <br />Project Number <br />101207 01 <br />_Received <br />8/16/00 <br />)ublin, CA 94568 <br />Project Manager <br />S Polston <br />Reported <br />8117-18/00 <br />Total Purgeable Hydrocarbons (C6 -C12) and BTEX to Air (ppmv) by DHS LUFT/Quality Control <br />Sequoia Analytical - Sacramento <br />Date Spike Sample QC Reporting Limit Recov RPD RPD <br />Walyte Analyzed Level Result Result Units Recov Limits % Lima % Notes <br />Batch =0080223 <br />Date Prepared -8116100 <br />Extraction Method. -EPA 5030B (PIT) <br />Blank <br />0080223-BLKI <br />Purgeable Hydrocarbons <br />8/16100 <br />ND <br />ppmv 280 <br />Benzene <br />ND <br />00160 <br />Toluene <br />ND <br />00130 <br />Ethylbenzene <br />ND <br />00120 <br />Xylenes (total) <br />ND <br />00120 <br />Surrogate a s a-Trrfluorotoluene <br />000200 <br />000210 <br />600-140 105 <br />Batch 0080234 <br />Date Prepared 8/17100 <br />Extraction Method EPA 5030B (PIT) <br />Blank <br />0080234-BLKI <br />Purgeable Hydrocarbons <br />8117/00 <br />ND <br />ppmv 280 <br />Benzene <br />ND <br />00160 <br />Toluene <br />ND <br />00130 <br />Ethylbenzene <br />ND <br />00120 . <br />Xylenes (total) <br />ND <br />00120 <br />Surrogate a a,a-Trrfluorotoluene <br />of000200 <br />000208 <br />600-140 104 <br />0 <br />Sequoia Analytical - Sacramento 'Refer to end of report for text of notes and definition$ <br />,per Page 13 of 16 <br />