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� 1• <br /> 819 Striker Avenue,Suite 8 <br /> Sequoia Sacramento,CA 95834 <br /> (916)921-9600 <br /> Analytical FAX(916)921-0100 <br /> www sequoialabs com <br /> SECOR International-Rancho Cordova Project ARCO 434, Lodi,CA <br /> 3017 Kilgore Road,Scute 100 Project Number 434,Lodi,CA Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 03/29/0217 21 <br /> Total Purgeable Hydrocarbons and BTEX by DHS LUFT-Quality Control <br /> Sequoia Analytical-Sacramento <br /> Rcporhng Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2030286-EPA 5030B(PIT} <br /> Blank(2030286-BLK1) Prepared&Analyzed 0312_1/02_ <br /> Purgeable Hydrocarbons ND 50 119/1 <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Surrogate a a a-Trrfluarotoluene 9 71 100 972 60-140 <br /> LCS(2030286-BSA) Prepared&Analyzed 03/21/02 <br /> Benzene 861 050 u8/1 too 861 70-130 <br /> Toluene 9 05 050 t 0 0 905 70-130 <br /> Ethylbenzene 9 32 050 " 100 932 70-130 <br /> Xylenes(total) 287 0 50 300 957 70-130 <br /> 0--gate a,a a-Trtfluorotoluene 101 100 101 60-140 <br /> LCS Dn 2030286-BSD1 PEMared&Analyzed 03/21/02 <br /> Benzene 8 25 050 u9/1 100 82 5 70-130 427 25 <br /> Toluene 8 63 050 100 863 70-130 475 25 <br /> Ethylbenzene 8 88 050 too 888 70-130 4 84 25 <br /> Xylenes(total) 275 050 300 91 7 70-130 427 25 <br /> Surrogate a a a-Trrfluorotoluene 9 22 " 100 922 60-140 <br /> Batch 2030305-EPA 5030B(PIT) <br /> Blank(2030305-BLKI) _ Prepared&Analyzed 03/22/02 _ <br /> Purgeable Hydrocarbons ND 50 ug/l <br /> Benzene ND 0 50 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Surrogate a,a a-Trrfluorotoluene 9 90 100 990 60-140 <br /> eyuota Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> ojcustody document This analytical report must be reproduced to its entirety <br /> Page Page 6 of 10 <br />