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885 Jarvis Drive <br /> �— Sequoia Morgan Hill CA 95037 <br /> (408) 776-96M <br /> �„�► Analytical FAX(408) 782-6308 <br /> —J Ground Zero Analysis,Inc Project Knowles Rock Sampled 6/14/99 <br /> 1714 Main St Project Number 96-163 Received 6/15/99 <br /> ■ Escalon,CA 95320 Project Manager Justin Powers Reported 6123199 <br /> Total Purgeable Hydrocarbons(C6-C12)and BTEX in Air(ppmv)by DHS LUFT/Quality Control <br /> Sequoia Analytical-Morgan Hill <br /> ■ <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> JAnalyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> ■ <br /> Batch 9060111 Date Prepared 6116199 Extraction Method EPA 5030E IPITI <br /> Blank 9060111-BLK1 <br /> Purgeable Hydrocarbons 6/16199 ND ppmv 0560 D <br /> ■ Benzene ND 000320 D <br /> Toluene ND 000260 D <br /> Ethylbenzene ND 000240 D <br /> ■ Xylenes(total) _ __ _ ND 000240 D <br /> Surrogate a a a-Trlflrrorotoluene 00100 000954 700-130 95 4 <br /> ■ <br /> ■ <br /> f <br /> if <br /> I <br /> ---sequoia Analytical-Morgan Hill Refer to end of report for text of notes and definitions <br /> r <br /> Page 5 of 6 <br /> v <br /> L <br /> Page 6 of 6 <br /> I <br />