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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0 100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industrial Koad San Carlos CA 94070-4111 (650)232-9600 FAX(650)232-961 Z <br /> lrmcon-Cameron Park Project ARCO 6020 Manteca,Ca Sampled 5/17/99 <br /> 939 Cambridge Road,Ste 202 Project Number NIA Received 5/17/99 <br /> ameron Park,CA 95682 Project Manager Joel Coffman Reported 5118/99 <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 /> nalyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> tch. 9050189 Date Prep&red. 5/17/99 EXtraction Method, EPA 5030B(MeOH) <br /> Blank 9050189-BLK1 <br /> rgeable Hydrocarbons 5/17/99 ND mg/kg 100 <br /> nzene ND 000500 <br /> oluene ND 000500 <br /> Ethylbenzene ND 000500 <br /> ylenes(total) ND 000500 <br /> irrogate a a a-Tnfluorotoluene 0200 0182 600-140 910 <br /> 9050189-BSI <br /> ene 5/17/99 0200 0 186 mg/kg 700-130 930 <br /> Clulene 0200 0204 700-130 102 <br /> Ethylbenzene 0200 0208 700-130 104 <br /> INSLenes(total) 0 600 0 561 700-130 93 5 <br /> gate a,a a-Triuorotoluene 0200 0 186 600-140 93 0 <br /> 9050189-MSI S905217-01 <br /> renzene 5117/99 0 200 ND 0 178 mg/kg 600-140 890 <br /> ene 0200 ND 0 192 600-140 960 <br /> Ethylbenzene 0200 ND 0 194 600-140 970 <br /> ylenes(total) 0 600 ND 0 528 600-140 880 <br /> rrogate a a a-Triuorotoluene 0200 0180 600-140 900 <br /> Matrix Spike Duo 9050189-MSD1 5905217-01 <br /> lenzene 5/17/99 0200 ND 0 179 mg/kg 600-140 895 250 0 560 <br /> oluene 0200 ND 0 190 600-140 95 0 25 0 105 <br /> Ethylbenzene 0200 ND 0 194 600-140 970 25 0 0 <br />,Xylenes(total) 0 600 ND 0 526 600-140 87 7 25 0 0 341 <br /> rrogate a a a-Tris luorotoluene 0200 0 179 600-140 895 <br /> uola Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> anald W <br /> Page 5 of 9 <br /> Bobel,Client Services Represdntative <br />