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680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 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 Industnal[load San Carlos CA 94070-4111 (650)232 9600 FAX(650)232-9612 <br /> innacle-C P Project ARCO 6020,Manteca,CA Sampled 5/20/99 <br /> 3939 Cambridge Road,Ste 220 Project Number N/A Received 5120/99 <br /> Iffameron Park,CA 95682 Project Manager Joel Coffman Reported 614/99 <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 /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes" <br /> Batch. 9050335 Date Prepared, 5/28!42 ExtractlUn Method. EPA 5030B(Me011) <br /> 9050335-BLKI <br /> Purgeable Hydrocarbons 5127199 ND mg/kg 100 <br /> enzene ND 000500 <br /> oluene ND 000500 <br /> Ethylbenzene ND 000500 <br /> mj�ylenes(total) ND 000500 <br /> rrogate a s a-Trtfluorotoluene 0200 0 171 600-140 855 <br /> LCSJ4050335-B51 <br /> enzene 5/27199 0200 0 199 mg/kg 700-130 995 <br /> oluene 0200 0203 700-130 101 <br /> Ethylbenzene 0200 0204 700-130 102 <br /> lens(total) 0 600 06t2 700-130 102 <br /> ogate a a a-Trtfluorotoluene 0200 0 172 600-140 860 <br /> Matnx Spike 9050335-MSI S905343-01 <br /> enzene 5/27/99 0200 ND 0 175 mg/kg 600-140 875 <br /> oluene 0200 ND 0 184 600-140 920 <br /> thylbenzene 0200 ND 0 186 600-140 93 0 <br /> Xylenes(total) 0 600 ND 0 564 600-140 940 <br /> rrrogaie a a a-Trifluorotoluene 0200 0 173 600-140 865 <br /> Matrix Spike ffilp 9050335-MSD1 5905343-01 <br /> enzene 5/27/99 0200 ND 0 170 mg/kg 600-140 85 0 25 0 290 <br /> oluene 0200 ND 0 179 600-140 895 250 275 <br /> thylbenzene 0200 ND 0 181 600-140 905 250 272 <br /> Xylenes(total) 0 600 ND 0 548 600-140 913 25 0 291 <br /> lurrogate a s a-Trifluorotoluene 0200 0 169 600-140 845 <br /> Batch. 9060062 Fxtrartrnn Metbod. EPA 5030B(M!cOH) <br /> 2QLK1 <br /> urgeable Hydrocarbons 6/1199 ND mg/kg 100 <br /> enzene ND 000500 <br /> Toluene ND 000500 <br /> thylbenzene ND 000500 <br /> ylenes(total) ND 000500 _ <br /> urrogate a a a-Tnfluorotoluene 0200 0201 600-140 101 <br /> 9060069-BSI <br /> enzene 611/99 0200 0205 mg/kg 700-130 102 <br /> ene 0200 0 220 700-130 110 <br /> re� <br /> ota Analytical-Sacramento *Refer to end of report for text of notes and def nitrons <br /> onald W Bobel,Client Services Rep sentatrve Page 5 of 9 <br /> V0 <br />