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919 Striker Ave Ste 8 <br /> Sequoia Sacramento CA 95834 <br /> " & A11alvdcal (9 1 6 92 1-9600 <br /> FAX(916 92[-0100 <br /> www sequoialabs com <br /> Gettler-Ryan-Dublin Project Former Unocal 5098,Stockton,CA 5308091 <br /> 6747 Sierra Court, Ste J Project Number N/A Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 08/20/03 16 56 <br /> Gasoline Hydrocarbons (2-Methylpentane to 1,2,4-Trim ethyl b enze ne) by EPA 8015M - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> alyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 3080100-EPA 5030E (P/'I <br /> lank(3080100-BLKI) Prepared&Analyzed 08/08/03 <br /> W[irgeable Hydrocarbons ND 50 ug/l <br /> Surrogate a a a-Trifluorotoluene 942 100 94 60-140 <br /> Bank(3080100-BLK2) Prepared&Analyzed 08/11/03 <br /> urgeable Hydrocarbons ND 50 ug/1 <br /> rrogate a a a-Tr[fluorotoluene 897 11 100 90 60-140 <br /> ank(3080100-BLK3) Prepared&Analyzed 08/12/03 <br /> Purgeable Hydrocarbons ND 50 ug/l <br /> trogate a a a-Trifluorotoluene 114 100 114 60-140 <br /> oratory Control Sample(3080100-BS1) Prepared&Analyzed 08/08/03 <br /> Purgeable Hydrocarbons 255 50 ug/l 250 102 70-130 <br /> a,a,a-Tr�uorotoluene 102 100 101 60-140 <br /> Wale <br /> atory Control Sample(3080100-BS2) Prepared 08/11/03 Analyzed 08/12/03 <br /> Purgeable Hydrocarbons 252 50 ug/l 250 101 70-130 <br /> lrogale a a a-Trifluorololuene 930 " 100 93 60-140 <br /> r <br /> boratory Control Sample(3080100-BS3) Prepared&Analyzed 08/12/03 <br /> Purgeable Hydrocarbons 252 50 ug/l 250 101 70-130 <br /> tatrix <br /> rogate a a a-Trtfluorololuene 930 l00 93 60-140 <br /> Spike(3080100-MSI) Source 5308091-02 Prepared&Analyzed 08/08/03 <br /> Purgeable Hydrocarbons 254 50 ug/l 250 ND 102 60-140 <br /> rogate a a a-Trifluorotoluene J00 JOG 100 60-140 <br /> Atrix Spike Dup(3080100-MSD1) Source S308091-02 Prepared&Analyzed 08/08/03 <br /> rgeable Hydrocarbons 239 50 ug/l 250 ND 96 60-140 6 25 <br /> 9-91,le a a,a-Trifluorotoluene 384 100 88 60-140 <br /> nota Analytical- Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated, results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 93 of 117 <br />