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( 819 Sinker Ave Ste 8 <br /> Sequoia Sacramento 95934 <br /> `i (9 92 1-9600M <br /> FAX(916)921-0100 <br /> �r Analytical ,Vw,v sequo,daba coin <br /> Gettler-Ryan-Rancho Cordova Project Former Unocal 2859,Stockton,CA S211680 <br /> 3140 Gold Camp Dr,Ste 170 Project Number N/A Reported <br /> Rancho Cordova CA,95670 Project Manager Geoffrey D Risse 12/13/02 20 12 <br /> Total Purgeable Hydrocarbon,BTEX and MTBE by DHS LUFT-Quality Control <br /> Sequoia Analytical-Sacramento <br /> Reporting Sprue Source %REC RPD <br /> lAnWytc Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2120095-EPA 5030B IT <br /> Blank 2120095-BLK1) Prepared&Anal d 11/27/02 <br /> Purgeable Hydrocarbons ND 50 ug/l <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 25 " <br /> Surrogate a a a-Tris luorotoluene 102 100 102 60-140 <br /> Blank(2120095-BLK3) Prepared&Analyzed 12/03/02 <br /> Purgeable Hydrocarbons ND 50 ug/1 <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 25 " <br /> Surrogate a a a-Trifhrorotoluene 958 100 96 60-140 <br /> Blank(2120095-BLK4) Prepared&Analyzed 12/13/02 <br /> Purgeable Hydrocarbons ND 50 ug/1 <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 <br /> Methyl tert-butyl ether ND 25 " <br /> Surrogate a a a-Tri,Jluarotoluene 973 100 97 60-140 <br /> Laboratory Control Sample(2120095-BS1) _ Prepared&Analyzed 11/27/02 <br /> Benzene 959 0 50 ug/I 100 96 70-130 <br /> Toluene 905 050 100 80 70-130 <br /> Ethylbenzene 947 050 100 95 70-130 <br /> Xylenes(total) 291 0 50 300 97 70-130 <br /> Methyl tert-butyl ether 634 25 100 63 70-130 Q-LIM <br /> Sequoia Amalytical-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 5 of 8 <br />