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Sequoia 3551 Industrial 94070 <br /> Q <br /> ��"' San Carlos CA 94070 <br /> �� Analytical (650)232-9604 <br /> FAX(fi50)232-9612 <br /> www sequoialabs tam <br /> ler-Ryan/Geostrategies(l) Project Unoca](4) <br /> F47 <br /> Sierra Court, Suite J Project Number Fortner Unocal#5098,Stockton Reported <br /> lin CA,94568 Project Manager Deanna Harding 07/01/02 07 46 <br /> Total Purgeable Hydrocarbons by DHS LUFT - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> nalyte Result Limit Units Level Result %REC Lunits RPD Lunit Notes <br /> #ch 2060220-EPA 5030B /T <br /> S Dup(2060220-BSD2) Prepared&Analyzed 06/17/02 <br /> Purgeable Hydrocarbon 234 50 ug/I 250 94 70-130 3 25 <br /> rugate a,a,a-Trifluorotoluene 108 " 100 108 60-140 <br /> Batch 2060224-EPA 5030B /T) <br /> nk(2060224-BLKI) Prepared&Analyzed 06/18/02 <br /> geable Hydrocarbons ND 50 uga <br /> Surrogate a,a o-Trifluorotoluene 990 100 99 60-140 <br /> S(2060224-BS2) Prepared&Analyzed 06/18/02 <br /> geable Hydrocarbons 247 50 ug/l 250 99 70-130 <br /> t'I agate a a a-TrIuorotoluene 106 100 106 60-140 <br /> Du (2060224-BSD2) Prepared&Analyzed 06/18/02 <br />'urgeable Hydrocarbons 243 50 ug/1 250 97 70-130 2 25 <br /> Wle a,a,a-Tr�uorotoluene 108 100 108 60-140 <br /> 2060232-EPA 5030B (P/T) <br /> k(2060232-BLKI) Prepared&Analyzed 06/18/02 <br />' eable Hydrocarbons ND 50 ug/l <br /> urrogale a a a-Trifluorotoluene 940 100 94 60-140 <br /> (2060232-BS2) Prepared&Analyzed 06/18/02 <br /> .able Hydrocarbons 237 50 ug/l 250 95 70-130 <br /> urrogate a a,41-TrIuorotoluene 108 /Go 108 60-140 <br /> 1 <br /> oia Analytical- San Carlos The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytrcal report must be reproduced in its entirety <br /> Page 99 of 103 <br />