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l� A <br /> 4oa et Lane <br /> Sequoia 5 <br /> Walnut Creek,,CCAA 9459898 <br /> (925)9W9600 <br /> Analytical FAX(925)988-9673 <br /> so <br /> Gettler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite J Project Number Unocal 112859 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 09-Mitr-00 10 29 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lunt Units Level Result %REC Limits RPD Limit Notes <br /> Batch OB22003-EPA 5030B [PIT] <br /> LCS(OB22003-BS1) Prepared&Analyzed 22-Feb-00 <br /> Benzene 202 050 ug/1 200 101 70-130 <br /> Toluene 204 050 200 102 70-130 <br /> Ethylbenzene 205 050 200 103 70-I30 <br /> Xylenes(total) 587 050 600 978 70-130 <br /> Surrogate a a,a-Tnfluorotoluene 293 300 977 70-130 <br /> Matrix Spike(OB22003-MSI) Source W002408-08 Prepared 22-Feb-00 Analyzed 23-Feb-00 <br /> Benzene 221 050 ug/1 200 ND 111 70-130 <br /> Toluene 232 050 200 ND 116 70-130 <br /> Ethylbenzene 228 050 200 ND 114 70-130 <br /> Xylenes(total) 654 050 600 ND 109 70-130 <br /> to a,ga-Tnfluorololuene 283 300 943 70430 <br /> Matra Spike Dup(OB22003-MSD I) Source W002408-08 Prepared 22-Feb-00 Analyzed 23-Feb-00 <br /> Benzene 219 050 ug/1 200 ND 109 70-130 0 909 20 <br /> Toluene 223 050 200 ND 111 70-130 396 20 <br /> Ethylbenzene 221 050 200 ND 111 70-130 3 12 20 <br /> Xylenes(total) 634 050 600 ND 106 70-130 3 1 l 20 <br /> Surrogate gga-Tnfluorotoluene 284 300 947 70-130 <br /> Batch OB23001 -EPA 5030B []?/fl <br /> Blank(OB23001-BLKI) Prepared&Analyzed 23-Feb-00 <br /> Purgeable Hydrocarbons ND 50 ug/l <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 0 50 " <br /> Methyl tai-butyl ether ND 2 5 " <br /> Surrogate a a a-Tnfluorotoluene 315 300 145 70-130 <br /> is Analytical-Walnut Creek The results in this report apply to the samples analyzed rn accordance with the thorn of <br /> custody document This analytical report must be reproduced in its entirety <br /> i <br /> Page 13 of 21 <br />