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Sequoia 814 Striker Avenue Suite 8 <br /> Sacramento C95834 <br /> {9 i 6}922 1-9600 <br /> FAX{916) <br /> Analytical labs c <br /> www <br /> m <br /> sequoislabs om <br /> Gettler-Ryan-Rancho Cordova Project Tosco 6981,Stockton,CA Sampled 4/26/00 <br /> 3164 Gold Camp Dr,Ste 240 Project Number NIA Received 4127/00 <br /> Rancho Cordova,CA 95670 Project Manager Mike Mrtchener Reported 511, 11/00 <br /> Total Purgeable Hydrocarbons (C&C12),BTEX and MTBE by DHS LUFT/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> lAnalyte Analyzed Level Result Result Units Recov Limits % Limit % Nates* <br /> Batch 0050001 Date Prepared 4128100 Extraction Method EPA 5030B McOH <br /> Blank 0050001-BLKI <br /> Purgeable Hydrocarbons 4/28100 ND mg/kg 100 <br /> Bement ND 000500 <br /> Toluene ND 000500 <br /> Ethylbenzene ND 000500 <br /> Xylenes(total) ND 000500 <br /> Methyl tert-butyl ether ND 00500 <br /> Surrogate a a a-Trifluorotoluene 0200 0162 600-140 810 <br /> LCS 0050001-BSI <br /> Benzene 4128100 0 200 0 189 mg/kg 700-130 945 <br /> Toluene 0 200 0 197 700-130 985 <br /> Ethylbenzene 0 200 0201 700-130 101 <br /> s(total) 0 600 0 560 700-130 93 3 <br /> tert-butyl ether 0 200 0 171 700-130 855 <br /> Surrogate a,a,a-Tr¢fluorotoluene 0200 0168 600-140 840 <br /> Matrix Spike 0050001-MSI 5004389-01 <br /> Benzene 4/28/00 0 200 ND 0 165 mg/kg 600-140 825 <br /> Toluene 0 200 ND 0 178 600-140 890 <br /> Ethylbenzene 0 200 ND 0 181 600-140 905 <br /> Xylenes(total) 0 600 ND 0 517 600-140 862 <br /> Methyl tert-butyl ether 0 200 ND 0 152 600-140 760 <br /> Surrogate a,a,a-Trlfluorotoluene 0200 0185 600-140 925 <br /> Matrix Spike Dup 0050001-MSD1 S004389-01 <br /> Benzene 4/28/00 0 200 ND 0 166 mg/kg 600-140 83 0 250 0 604 <br /> Toluene 0 200 ND 0 179 600-140 895 250 0 560 <br /> Ethylbenzene 0 200 ND 0 182 600-140 910 25 0 0 551 <br /> Xylenes(total) 0 600 ND 0 517 600-140 862 250 0 <br /> Methyl tert-butyl ether 0 200 ND 0 148 600-140 740 25 0 267 <br /> Surrogate a,a,a-Triuorotoluene 0200 0188 600-140 940 <br /> Batch 0050027 Date Prepared- 5/2100 Extraction Method EPA 5030B McOH <br /> Blank 0050027-BLKI <br /> Purgeable Hydrocarbons 5/2/00 ND mg/kg 100 <br /> Benzene ND 000500 <br /> Toluene ND 000500 <br /> Ethylbenzene ND 000500 <br /> Xylenes(total) ND 000500 <br /> tert-butyl ether ND 00500 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of nates and definitions <br /> ,p Page 11 of 16 <br />