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i y 885 Jarvis Drive1 Sequoia Morgan Hill CA 95037 <br /> �„�► (408) 776-9600 <br /> Analytical <br /> FAX(408) 782-6308 <br /> ATC Associates,Inc -Modesto Project Stockton Fire Station#2 Sampled 7/6/99 <br /> 1117 Lone Palm Avenue Project Number #5462574 0001 Received 718/99 <br /> Modesto,CA 95351-1502 Project Manager Jeanne Homsey Reported 7/20/99 <br /> A —Tatil Purgeable Hydrocarbons(C6-C12),f3TEX and MTBE by DH$LU)+"I'%Qasltty Control W - <br /> _ Seguoia Analytical_Morgan Hill _ <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Matrix Spike(continued) 9070545-MS1 M907294-01 <br /> Ethylbenzene 7/16/99 100 ND 942 ug/l 600-140 942 <br /> Xylenes(total) 300 ND 282 _ 600-140 940 <br /> Surrogate a,a,a-Trzfluorotoluene 100 988 700-130 988 <br /> Matrix Spike Dup 9070545-MSD1 M907294-01 <br /> Benzene 7/16/99 100 ND 851 ug/1 600-140 851 250 560 <br /> Toluene 100 ND 8 73 600-140 873 250 546 <br /> Ethylbenzene 100 ND 896 600-140 896 250 501 <br /> Xylenes(total) _ _ 300 _ ND 269 _ 600-140 897 25 0 468 <br /> Surrogate a a,a-Trifluorotoluene 100 914 700-130 914 <br /> Batch 9070547 Date Prepared 7/16/99 Extraction Method EPA 5030B IP/T1 <br /> Plank 9070547-BLKI <br /> Oable Hydrocarbcns 7/16/99 N-D ug/l 500 <br /> gene ND 0 500 <br /> Toiuene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Methyl tert-butyl ether _ _ ND_ 2_50_ <br /> Surrogate a,a,a-Trzfluorotoluene 100 9 48 " ~� 700-130 94 8 <br /> LCS 9070547-BSI <br /> Benzene 7/16/99 100 877 ug/l 700-130 877 <br /> Toluene 100 882 700-130 882 <br /> Ethylbenzene 100 882 700-130 882 <br /> Xylenes(total) 300 266 700-130 88 7 <br /> Surrogate a a a-Try7uorotoluene 100 869 700-130 869 <br /> Matrix Spike 9070547-MSI M907294-07 <br /> Benzene 7/16/99 100 ND 896 ug/1 600-140 89 6 <br /> Toluene 100 ND 909 600-140 909 <br /> Ethylbenzene 100 ND 9 16 600-140 916 <br /> Xylenes(total) 300 ND 276 600-140 920 <br /> Surrogate a a a-Trlfluorotoluene 100 795 700-130 79 5 <br /> Matrix Spike Aup 9070547-MSDI M907294-07 <br /> Benzene 7/16/99 100 ND 7 83 ug/I 600-140 78 3 25 0 135 <br /> Toluene " 100 ND 821 " 600-140 82 1 250 10 2 <br /> Ethylbenzene 100 ND 824 it 600-140 824 250 10 6 <br /> Xylenes(total) 300 ND 248 600-140 82 7 250 10 6 <br /> gate a a a-Trzfluorotoluene 100 7 68 700-130 768 <br /> Sequoia Analytical-Morgan Hill *Refer to end of report for text of notes and de/inztzons <br /> page 6 of 9 <br />