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1819 Striker Avenue Suite 8 <br /> SequoiaSacramento CA 95834 <br /> 1 (9161921-9600 <br /> Analytical FAX eqU 921-0100 <br /> wwvv sequoialabs corn <br /> ATC Associates Inc -Modesto Project Westrec Properties/KIR <br /> 1 1 l7 Lone Palm Ave, Ste B Project Number 54 62514 0001 Reported <br /> Modesto CA, 95351 Project Manager Jeanne 1-lomsey 04/21/01 11 50 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Levei Result %REC Limits RPD Limit Notes <br /> Batch 1040193 - EPA 5030B(P/T) <br /> Blank(1040193-BLK1) Prepared&Analyzed 04/13/01 <br /> Purgeable Hydrocarbons ND 50 0 ug/I <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-Trruorotoluene 105 100 105 60-140 <br /> LCS(1040193-BS1) Prepared&Analyzed 04/13/01 <br /> Benzene 905 0 500 ug/1 too 905 70-130 <br /> Toluene 923 0 500 100 923 70-130 <br /> laIbenzene 942 0 500 " 100 942 70-130 <br /> nes(total) 28 8 0 500 300 960 70-130 <br /> Methyl tert-butyl ether 8 13 250 100 813 70-130 <br /> Surrogate a a a-Trti luorotoluene 101 100 101 60-140 <br /> Matrix Spike(1040193-MSI) Source S104144-04 Prepared&Analyzed 04/13/01 <br /> Benzene 9 06 0 500 ug/l 100 ND 906 60-140 <br />' Toluene 938 0 500 100 ND 938 60-140 <br /> Ethylbenzene 9 65 0 D00 100 ND 965 60-140 <br /> Xylenes(total) 296 0 500 300 ND 98 7 60-140 <br />' Methyl tert-butyl ether 8 96 250 100 ND 896 60-140 <br /> Surrogate a a a-Triuorotoluene 104 100 104 60-140 <br /> Matrix Spike Dup(1040193-MSD1) Source S104144-04 Prepared&Analyzed 04/13/01 <br /> Benzene 828 0 500 ugll 100 ND 928 60-140 900 25 <br /> Toluene 8 55 0 500 100 ND 85 5 60-140 926 25 <br /> Ethylbenzene 868 0 500 100 ND 86 8 60-140 10 6 25 <br />' Xylenes(total) 267 0)00 300 ND 890 60-140 103 25 <br /> Methyl tert-butyl ether 8 03 2�0 100 ND 803 60-140 10 9 25 <br /> Surrogate a a a-Trifluorotoluene 9 16 100 916 60-140 <br /> uota Analytical-Sacramento The results to 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 10 of 14 <br />