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819 Sinker Ave Su 8 <br /> Sequoia sato,CA 95834 <br /> AnalyticalFAX(916)921-0100 <br /> (916)921-9500 <br /> n <br /> • FAX(910 921-0100 <br /> www sequoialabs coin <br /> Gettler-Ryan-Rancho Cordova Project Former Unocal 2859,Stockton,CA 5212549 <br /> 3140 Gold Camp Dr,Ste 170 Project Number NIA Reported <br /> Rancho Cordova CA,95670 Project Manager Geoffrey D Ruse 01/03/03 16 17 <br /> Total Purgeable Hydrocarbon,BTEX and MTBE by DHS LUFT- Quality Control <br /> Sequoia Analytical-Sacramento <br /> Repotting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Lumts RPD Limit Notes <br /> Batch 2120461-EPA 5030B(PIT) <br /> Laboratory Control Sample(2120461-BS4)_ Preparcd&Analyzed 12/30/02 <br /> Ethylbenzene 991 050 ug/l 100 99 70-130 <br /> Xylenes(total) 297 050 300 99 70-130 <br /> Methyl tert-butyl ether 107 20 100 107 70-130 <br /> Surrogate a a a-Triuorotoluene 114 100 114 60440 <br /> Duplicate{2120461-DUP1) Source 5212661-01 Prepared&Analyzed 12/29/02 <br /> -- -- - -- ------ - <br /> Putgeable Hydrocarbons ND 50 ugn ND 14 50 <br /> Benzene ND 050 ND 50 <br /> Toluene ND 050 ND 50 <br /> Ethylbenzene 0 819 050 074 10 5o <br /> Xylenes(total) 493 050 " 49 06 50 <br /> Methyl tert-butyl etber ND 20 ND 50 <br /> Surrogate a,a,a-Tri#uorotoluene 915 100 91 60-140 <br /> Sequoia 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 /> Zhis analytical report must be reproduced in its entirety <br /> Page 6 of 7 <br />