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Sequoia 819 Sutter Avenue 5583 <br /> Sacramento CA 958344 <br /> 41) (916)921-%00 <br /> Analytical w� (916)92 1-0100 <br /> www sequolalabs corn <br /> Is <br /> Blaine Tech Services,Inc Project Equiva,2575 Country Club,Stockton,CA <br /> 1680 Rogers Avenue Project Number 010412-JI Reported <br /> San Jose CA,95112-1105 Project Manager Nick Sudano 05/01/01 11 21 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical-Sacraments <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1040236-EPA 5030B(P/T) <br /> Blank(1040236-BLK1) Prepared&Analyzed 04/18/01 <br /> Purgeable Hydrocarbons ND 500 ug/1 <br /> Benzene ND 0 500 " <br /> Toluene ND 0 500 " <br /> Ethylbenzene ND 0 500 " <br /> Xylenes(total) ND 0 500 " <br /> Methyl tert-butyl ether ND 250 " <br /> Surrogate a a a-TrrJluorotoluene 101 100 101 60-140 <br /> LCS(1040236-BSI) Prepared&Analyzed 04/18/01 <br /> Benzene 876 0 500 ug/l too 87 6 70-130 <br /> Toluene 958 0 500 100 95 8 70-130 <br /> Ethylbenzene too 0 500 1 0 0 100 70-130 • <br /> Xylenes(total) 298 0 500 300 993 70-130 <br /> Methyl tert-butyl ether 801 2 50 10 0 80 1 70-130 <br /> Surrogate aa a-Trrnuorotoluene 976 100 976 60-140 <br /> Matrix Spike(1040236-MSI) Source 5104202-11 Prepared&Analyzed 04/18/01 <br />--TBenzene $49-0 500ug/I 100 ND 849 60-140 <br /> Toluene 941 0 500 100 ND 94 1 60-140 <br /> Ethylbenzene 983 0 500 100 ND 98 3 60-140 <br /> Xylenes(total) 295 0 500 300 ND 98 3 60-140 <br /> Methyl tert-butyl ether 13 6 2 50 100 ND 136 60-140 <br /> Surrogate a aa-Trruorotoluene 104 100 104 60-140 <br /> Matrix Spike Dup(1040236-MSD1) Source S104202-11 Prepared&Analyzed 04/18/01 <br /> Benzene 972 0 500 ug/1 100 ND 872 60-140 267 25 <br /> Toluene 956 0 500 100 AID 956 60-140 1 58 25 <br /> Ethylbenzene lot 0 500 100 ND 101 60-140 271 25 <br /> Xylenes(total) 303 0 500 300 ND 101 60-140 2 68 25 <br /> Methyl tert-butyl ether 138 250 10 0 ND 138 60-140 146 25 <br /> Surrogate a a a-Trtfluorotoluene 11 1 100 111 60-140 <br /> Sequoia Analytical -Sacramento The results in this report apply to the samples analyzed in accordance with the cha <br /> ls <br /> custody document This analytical report must be reproduced to its entirety <br /> Page 17 of 25 <br />