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ane <br /> Sequoia 4 a wA 598 <br /> Walnut Creek CA 94598 <br /> —�- - - - - (925)988-966 <br /> a Analytical <br /> y -FAX(925)alabs c 73 <br /> [�Lll www seyuoialabs coin <br /> Gettler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite J Project Number Unocal/Ctrcle K# 1205 Reported <br /> Dublin CA,94568 Project Manager Deannal, Harding 15-Nov-00 07 38 <br /> Total Purgeable Hydrocarbons (C&C12),BTEX and MTBE by DHS LUFT- Quality Control <br /> Sequoia Analytical-- Sacramento <br /> Reporting Spike Source °/aREC RPD <br /> Analyte Result Lfunt Units Level Result a/aREC Lmuts RFD Lnmt Notes <br /> Batch 0110002-EPA 5030B (MeOH) <br /> Blank(0110002-BLKl) Prepared&Analyzed 01-Nov-00 <br /> Purgeable Hydrocarbons ND 500 ug/l <br /> Benzene ND 0 500 " <br /> Toluene ND 0 500 " <br /> Ethylbenzene ND 0 500 " <br /> Xylenes(total) ND 0 500 " <br /> Methyl tert-butyl ether ND 250 " <br /> Surrogate aaa-Trrfluorotoluene 106 100 106 600-140 <br /> LCS(0110002-BSl) Prepared&Analyzed 01-Nov-00 <br /> Benzene 103 0 500 ug/l 100 103 700-130 <br /> Toluene 102 0 500 100 102 700-130 <br /> Ethylbenzene 107 0 500 100 107 700-130 <br /> Xylenes(total) 314 0 500 300 105 700-130 <br /> Methyl tart-butyl ether 922 250 100 922 700-130 <br /> Surrogate q a,a-4}Ifluorotoluene 104 100 104 600-140 <br /> Matra Spike(0110002-MS1) Source S010502-05 Prepared&Analyzed 01-Nov-00 <br /> Benzene 103 0 500 ug/l 100 ND 103 600-140 <br /> Toluene 103 0 500 100 ND 103 600-140 <br /> Ethylbenzene 109 0 500 100 ND 108 600-140 <br /> Xylenes(fatal) 316 0 500 300 ND 105 600-140 <br /> Methyl tert butyl ether 885 250 100 ND 885 600-140 <br /> Surrogate aq a a-Tnfluorofoluene 104 100 104 600-140 <br /> Matra Spike Dup(0110002-MSDl) Source 501050245 Prepared&Analyzed 01-Nov-00 <br /> Benzene 105 - 0 500 ugll- - 10 0 ND 105 600-140 192 250 <br /> Toluene 10 5 0 500 100 ND 105 600-140 192 250 <br /> Ethylbenzene 107 0 500 " 100 ND 107 600-140 0 930 250 <br /> Xylenes(tel) 320 0 500 300 ND 107 600-140 189 250 <br /> Methyl ted-butyl ether 114 2 50 100 ND 114 600-140 252 250 Q-07 <br /> Surrogate q qa-Tnfluorotohtene 103 " 100 103 600-140 <br /> Sequoia Analytical.-Walnut Creek The results in this report apply to the samples analysed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 8 of I <br />