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680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)3649233 <br /> a 404 N Wiget lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Sequoi <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921.0100 <br /> 1455 (707)792-1865 FAX(707)792-0342 <br /> Analytical 1551 dcustnalllBlvd Road North Ste D Petaluma Cas CA 944070-41 1 1 (650)232-9600 FAX(650)232-9612 <br /> leinfelder-Stockton Project N/A Sampled 4/1199 <br /> 2825 East Myrtle Street Project Number 20-1417-16 EOI Received 4/6/99 <br /> tockton,CA 95205 Project Manager Tony Martin Reported 4/16/99 <br /> Total Purgeable 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 /> Rnalyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Date Prepared 4113199 Extraction Method. EPA 5030B(P/T) <br /> shak 9040160-BLKI <br /> Purgeable Hydrocarbons 4/13199 ND mg/kg 100 <br /> enzene ND 000500 <br /> oluene ND 000500 <br /> thylbenzene ND 000500 <br /> Xylenes(total) ND 000500 <br /> i i rogate a a a-Trrfluorotoluene 0200 0 192 600-140 960 <br /> LCE 9040160-13S 1 <br /> Ienzene 4113/99 0200 0204 mg/kg 700-130 102 <br /> oluene 0200 0 218 " 700-130 109 <br /> thylbenzene 0200 0 218 700-130 109 <br /> Xylenes(total) 0 600 0 587 700-130 978 <br /> ate aaa-Trifluorotoluene 0200 0 193 600-140 965 <br /> 904Ql(z0-N1S1 S904126-07 <br /> Benzene 4/13/99 0200 ND 0 191 mg/kg 600-140 955 <br /> Ioluene 0200 ND 0202 600-140 101 <br /> thylbenzene 0200 ND 0203 600-140 101 <br /> Xylenes(total) 0 600 ND 0 552 600-140 920 <br /> tirrogate aaa-Try7uorotoluene 0200 0 197 600-140 98 5 <br /> L= <br /> 9040160-M S D I S904126-07 <br /> Benzene 4/13/99 0200 ND 0 193 mg/kg 600-140 965 25 0 104 <br /> Ioluene 0200 ND 0 197 600-140 985 250 2 51 <br /> thylbenzene 0200 ND 0207 600-140 103 250 196 <br /> Xylenes(total) 0 600 ND 0 561 600-140 93 5 250 162 <br />�¢nrogate aaa-Trifluorotoluene " 0100 0 188 600-140 940 <br /> I <br /> eequ!ia Analytical-Sacramento *Refer to end of report for text of notes and def nitrons <br /> C <br /> andra R Hanson,Client Services Representative Page 5 of 6 <br />