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819 Stnker Avenue Suste 8 <br />Sacramento CA 95834 <br />Sequoia (916) 921-9600 <br />FAX (916) 921-0100 <br />Analytical VO <br />_ - """'""°gabs <br />Project Chevron 9-5775 Lodi , CA Sampled 8116100 <br />Gettler-Ryan -Dublin Received 8116100 <br />6747 Sierra Cour[ Ste 1 Protect Number 101207 Ol <br />Dublin CA Court Project Manager S Polston Re orted 8117-18100 <br />Total Purgeable Hydrocarbons (C6 -C12) and BTEX in Air (ppmv) by DHS LUF /Quality Control <br />Sequoia Analytical - Sacramento <br />Date Spike Sample QC Reporting Limit Recov RPD RPD <br />Analvzed Level Result Result Units Recov Limits % Limit % Notes' <br />Batch 0080223 Date Prepared 811,6/00 Extraction Method EPA 5030B (P!T <br />Blank 008022 K1 <br />Purgeable Hvdrocarbons 8116100 ND ppmv 0 <br />2 <br />„ ND 00160 <br />Benzene ND 00130 <br />Toluene „ ND 00120 <br />Ethylbenzene ND 00120 <br />Xylenes (total) 600-140 105 <br />Surrogate a a a-Trifluorotoluene 0 00200 0 00210 <br />Batch 0080234 Date Prepared 8117100 Extraction Method EPA 5030B (PITT <br />Blank 0080234-BLKI <br />Purgeable Hydrocarbons 8117100 ND ppmv 2 80 <br />ND 00160 <br />Benzene ND 00130 • <br />Toluene ND 00120 <br />Ethylbenzene " ND 00120 <br />Xylenes (total) 00 1208 60 0-140 104 <br />Surrogate b aa-Trifiuorotoluene 000200 <br />• <br />Sequoia Analytical - Sacramento 'Refer to end of report for text ofnotes and defnttzons <br />Page 13 of 16 <br />