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1 <br /> Sequoia 8195�U er me to CA 95834 <br /> (9t6)921-9600 <br /> D_�„ Analytical FAX(916)921-0 100 <br /> is <br /> EMCON/Pinnacle-Sacramento 9 Project ARCO 2130,Stockton,CA Sampled 9/2/99 <br /> 1433 N Market Blvd Project Number 21775-229003 Received 913/99 <br /> Sacramento,CA 95834 Project Manager Dave Foley Reported 9/20/99 <br /> Total Purgeable Hydrocarbons (C6-C12),BTEX and MTBE by 1)HS LUFT/Quahty 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 /> LCS(continued) 9090087-BS1 <br /> Methyl tert-butyl ether 9/10199 100 Ito ug/1 700-130 Ito <br /> Surrogate a,a a-Trifluorotoluene it 100 113 600-140 113 <br /> MatrixSnike 9090087-MSI $909073-08 <br /> Benzene 9/10/99 100 ND 13 4 ug/l 600-140 134 <br /> Toluene 100 ND 8 96 600-140 896 <br /> Ethylbenzene 100 ND 951 600-140 951 <br /> Xylenes(total) 300 ND 290 600-140 96 7 <br /> Methyl tert-1 utyl ether 100 ND 182 600-140 182 5 <br /> Surrogate a,a a-Trifluorotoluene of 100 123 of 600-140 1130 3 <br /> Matrix SpikeDun 9090087-MSDI 5909073-08 <br /> Benzene 9/10/99 100 ND 14 0 ug/] 600-140 140 25 0 438 <br /> Toluene " 100 ND 920 600-140 92 0 25 0 2 64 <br /> enzene 100 ND 960 600-140 960 25 0 0 942 <br /> es(total) 300 ND 28 8 600-140 960 25 0 0 727 <br /> Methyl tert-butyl ether 100 ND 196 600-140 196 25 0 741 5 <br /> Surrogate a a a-Trip uorotoluene 100 126 to600-140 1260 3 <br /> Batch, 9090102 Date Prepared. 9113/99 FEgtrartion Method. EPA 5030B(P/T) <br /> Blank 9090102-BLKI <br /> Purgeable Hydrocarbons 9/13/99 ND ug/l 500 <br /> Benzene 11ND 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) to ND 0 500 <br /> Methyl tert-butyl ether " ND 5 00 <br /> Surrogate a a,a-Trtfluorotoluene 100 110 600-140 110 <br /> LCS 9090102-BS1 <br /> Benzene 9/13199 100 944 ug/I 700-130 944 <br /> Toluene 1, too 949 700-130 94 9 <br /> Ethylbenzene 1. 100 950 11700-130 95 0 <br /> Xylenes(total) 300 28 7 700-130 95 7 <br /> Methyl tert-butyl ether 100 106 700-130 106 <br /> Surrogate a,a a-Trifluorotoluene 100 110 600-140 110 <br /> Matrix Spike 9090102-MSI 5909120-27 <br /> Benzene 9/13/99 100 ND 8 55 ug/1 600-140 85 5 <br /> Toluene 100 ND 9 11 600-140 911 <br /> Ethylbenzene 100 ND 9 13 600-140 913 <br /> Ask <br /> is Analytical-Sacramento *Refer 10 end of report for text of notes and definitions <br /> Page 8 of 12 <br />