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819 Striker Ave Ste 8 <br /> Sacramento,CA 95834 <br /> Sequo[y 91 921 9600 <br /> ia FAX(916)921-0100 <br /> • Analyticalwww ' '`°m <br /> Gettler-Ryan-Rancho Cordova Project Former Unocal 0187,Stockton,CA S212554 <br /> Project Number NumbNIA Reported <br /> 3140 Gold Camp Dr,Ste 170 01/03/03 16 34 <br /> Rancho Cordova CA,95670 Project Manager David Herzog <br /> Total Purgeable Hydrocarbon,BTEX and MTBE by DHS LUFT-Quality Control <br /> Sequoia Analytical-Sacramento <br /> Reporting Spike Source %REC IAnalyte Result Limit Units Level Result %REC Limits RPD Lunt Notes <br /> Batch 2120462-EPA 5030B <br /> Laboratory Control Sample(2120462-BS4) PreDared&Analyzed. 12/31/02 <br /> Ethylbenzene 978 050 ugll 100 98 70-130 <br /> Xylenes(total) 295 050 300 98 70-130 <br /> Methyl tent butyl ether 110 20 100 110 70-130 <br /> Surrogate a a a-TrtJluorotoluene <br /> 107 100 107 60-140 <br /> Duplicate 2120462-DUPl Source S212554-01 prepared&Anal ed 12/30/02 <br /> ptageable Hydrocarbons ND50 u9/1 ND 50ND 50 <br /> Benzene ND 0 50 i 50 <br /> Toluene ND 0 50 ND 50 <br /> Ethylbenzene ND 0 50 "50 n ND 50 <br /> Xylenes(total) Nb Oz 0 " ND 50 <br /> SMethyl tert-butyl ether ND <br /> Surrogate a a a-Trtfluorotoluene <br /> 102 <br /> IO 0 !Ol 60-140 <br /> Sequoia Analytical-Sacramento The results to this report apply to the samples analyred to accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> Thts anaoncal report must be reproduced to its entirety <br /> Page 8 of 9 <br />