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Sequoia 8195ttito CA 5834 <br /> Satramcnvo CA 95634 <br /> (9(6)921 9600 <br /> 21-0100 <br /> Analytical <br /> FAXsequo 9abscom <br /> WWW sequoialabs com <br /> Gettler-Ryan-Dublin Project Former Unocal 5098,Stockton, CA 5308091 _ <br /> 6747 Sierra Court, Ste 7 Project Number N/A Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 08/20/03 16 56 <br /> Volatile Organic Compounds by EPA Method 8260E - Quality Control <br /> - Sequoia Analytical - Sacramento - <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 3080141 -EPA 5030H [PIT] - y - - - - - - - - - <br /> Blank(3080141-BLKI) Prepared 08/12/03 Analyzed 08/13/03 <br /> 1,3-Dichloropropane ND 050 ug/l <br /> 2,2-Dichloropropane ND 050 ' <br /> I,I-Dtchloropropene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Hexachlorobutadiene ND 10 " <br /> Isopropylbenzene ND 050 " <br /> p-Isopropyltaluene ND 050 ' <br /> Methylene chloride ND 1 0 " <br /> Methyl terl-butyl ether- ND 050 - - <br /> Naphthalene ND 10 " <br /> n-Propylbenzene ND 0 50 " <br /> I <br /> Styrene ND 050 " <br /> 1,1 y 1,2-Tetrachloroethane ND 050 <br /> 1,1,2,2-Tetrachloroethane ND 10 " <br /> Tetrachloroethene ND 050 " <br />_ Toluene Nr) ()SO <br /> 1,2 3-Trtchlatobenzene ND 050 <br /> 1,2;4-TnchloroFenzene ND 050-11- <br /> 1,1,1-Tricblorocthane <br /> 50 "1,1,1-Trichloroethane ND 050 " <br /> 1,1,2-Tnchloroethane - T ND - - 050 " -- - - — - - -- -- , <br /> Trichloroethene _ _ _ ND_ __ 0_50 <br /> Tnchlorofluoromethane ND 050 <br /> 1,2,3-Tnchloropropane ND 10 <br /> 1,2,4-Tnmethylbenzene ND 050 " <br /> 1,3,5-Trimethylbetizene ND 050 " <br /> Vinyl chloride ND 050 ' <br /> Xylenes(total) ND 050 " <br /> Surrogate 1 2-DC.4-d4 264 250 _106 60-140 <br /> Su+rogate Dibi omofluoromethane 25 9 25 0 104 70-130 <br /> _ -—, <br /> Surrogate 12-DC,4 d4 264 250 _106 70-130 <br /> Surrogate Toluene-d8 249 250 100 70-130 <br /> Surrogate 4-BFB 264 250 106 70-130 <br /> Sequoia Analytical - Sacramento The?esults in this report apply to the samples analyzed in accordance with the chain of o <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 106 of 117 ' <br />