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819 Striker Avenue Suite 8 <br /> Sequoia Sacramento 91 95 4 <br /> (916)921-9600 <br /> FAX(916)921.0100 <br /> Analytical www sequoialabs com <br /> SECOR International- Rancho Cordova Project Arco 4932,Stockton,CA <br /> 3017 Kilgore Road Suite 100 Project Number NIA Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 05/29/01 17 59 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reportin6 Spike Source %REC RPD <br /> Analyte Result Limit Unns I evel Result %REC 1 emits RPD Limit Nous <br /> Batch 1050194- EPA 5030B(P/T) <br /> Blank(1050194_BLK1) Pn pared&Analyzed 05/14/01 <br /> Purgeablt.11ydrocarhons ND 500 ugll <br /> Benzene ND 0 500 " <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 " <br /> Xylenes(total) ND 0 500 " <br /> Methyl Cert-butyl ether ND 2 50 " <br /> Surrogate a a a-Trifluorotoluene 9-)7 /00 95 7 _ 60-140 <br /> LCS(105_0_1_9_4-BSI) Prepared&Analyzed 05/14/01 <br /> Benzene _ 863 0 500 ug/1 100 863 70-130 <br /> Toluene 101 0 500 100 101 70-130 <br /> Qe/benzene 108 0 500 10 0 108 70-130 <br /> nes(total) 320 0 500 300 107 70-130 <br /> Methyl tert-butyl ether 7 83 2 50 100 783 70-130 <br /> Surrogate a a a Trifluorotoluene 984 100 984 60-140 r <br /> Matrix Spike(1050194_MSI) Source S105123-05 Prepared&Analyzed 05/14/01 - <br /> Benzene 843 0 500 ugA 100 ND 84 3 60-140 <br /> Toluene 9 94 0 500 100 ND 994 60-140 <br /> Ethytbenzene 108 0 500 100 ND 108 60-140 <br /> Xylenes(total) 319 0 500 300 ND 106 60-140 <br /> Methyl tent-butyl ether 8 28 2 50 100 ND 82 8 60-140 <br /> Surrogate a a a-Triuorololuene 9 16 100 916 60-140 <br /> Matrix Spike Dup(I050194-MSD1)-- __ __ Source S105123-05 Prepared&Analyzed 05/14/01 _ <br /> Benzene 887 0 500 ug/i 10 0 ND 887 60-140 5 09 25 <br /> Toluene 105 0 500 10 0 ND 105 60-140 5 48 25 <br /> Ethylbenzene 1 l 4 0 500 10 0 ND 114 60-140 541 25 <br /> Xylenes(total) 336 0 500 300 ND 112 60-140 5 19 25 <br /> Methyl tert-butyl ether 860 2 50 100 ND 860 60-140 379 25 <br /> Surrogate a a a-Trti luorotoluene 9 10 10 0 910 60-140 <br /> uoia Analytical- Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 7 of 9 <br />