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Sequoia 819 Straker Avenue Suite S <br /> Sacramento CA 95834 , <br /> (916)921-9000 <br /> FAX(916)921-0100 <br /> lowAnalytical www secluoialabs corn <br /> IT Corporation-Cameron Park Project Tosco 1205,Lathrop,CA <br /> 3939 Cambridge Rd Project Number N/A Reported <br /> Cameron Park CA 95682 Protect Manager Mark Capps 12/15/00 16 43 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> -- - —Sequoia Analytical - Sacramento- -- - – - – - - - <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 0120127- EPA 5030B(MeOH) <br /> Blank(0120127-BLK1) _ Prepared&Analyzed 12/08/00 <br /> Purgeable Hydrocarbons NO 100 mg/kg <br /> Benzene ND 000500 <br /> Toluene NO 000500 " <br /> Ethylbenzene NO 000500 " <br /> Xylenes(total) NIS 000500 " <br /> Methyl ten-butyl ether NO 00500 " <br /> Surrogate a a a-Tri luororoluene 0 186 0200 93 0 60-140 T <br /> LCS(0120127-BSI) Prepared&Analyzed 12/08/00 <br /> Benzene 0206 000500 mg/kg 0200 103 70-130 <br /> Toluene i 0 217 000500 0200 108 70-130 <br /> Ethylbenzene 0 223 000500 0200 112 70-130 <br /> Xylenes(total) 0 579 000500 0 600 96 5 70-130 • <br /> Methyl tert-butyl ether 0 191 00500 0200 95 5 70-130 <br /> Surrogate a a a-Trlfluorotoluene 0 195 0200 975 60-140 <br /> Matrix Spike(0120127-MS1) Source 5012073-06 _ Prepared&Analyzed 12/08/00 <br /> Benzene 0 159 000500 mg/kg 0200 NO 79 5 60-140 4 <br /> Toluene 0 167 000500 0200 NO 83 5 60-140 <br /> Ethylbenzene 0 177 000500 0200 000530 85 8 60-140 <br /> Xylenes(total) 0 461 000500 0 600 00283 72 1 60-140 <br /> Methyl tert-butyl ether 0 147 00500 0200 NO 73 5 60-140 <br /> Surrogate a a a-Trifluorotoluene 0 186 0200 930 60-140 <br /> Matrix Spike Dup(0120127-MSD1) Source 5012073-06 Prepared&Analyzed 12/08/00 <br /> Benzene — - - 0 158 000500 mg/kg 0200 NO 790 60-140 0 631 25 <br /> Toluene 0 166 000500 0200 NO 83 0 60-140 0 601 25 <br /> Ethylbenzene 0 176 000500 0200 000530 85 3 60-140 0 567 25 <br /> Xylenes(total) 0 458 000500 0 600 00283 71 6 60-140 0 653 25 <br /> Methyl tert-butyl ether 0 145 00500 0200 NO 72 5 60-140 1 37 25 <br /> Surrogate a a,a-Triuorotoluene 0 194 0200 970 60-140 <br /> Sequoia Analytical- Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 9 of 12 <br />