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Sequoia 819 Avenue Suite 8 <br /> _e Sacramento CA 95834 <br /> ® (916) 921-9600 <br /> Analytical <br /> FAX equo alabs92 1 corn <br /> 0 <br /> Gettler-Ryan-Petaluma Project Former Tosco 6981,Stockton, CA <br /> 1364 N McDowell Blvd Ste B2 Project Number N/A Reported <br /> Petaluma CA,94954 Project Manager Dave Vossler 06/26/02 1341 <br /> Total Purgeable Hydrocarbon, BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %RLC RPD <br /> Analyte Result Limit Units Leel Result %REC Limits RPD Limit Notes <br /> Batch 2060302-BPA 5030B(PIT) <br /> Blank(2060302-BLK1) Prepared&Analyzed 06/24/02 <br /> Purgeable Hydrocarbons ND 50 ug/l <br /> Benzene ND 050 " <br /> Toluene AID 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 25 " <br /> Surrogate a a a-Trti luorotoluene 103 100 103 60-140 <br /> LCS(2060302-BS1) Prepared&Analyzed 06/24/02 <br /> Benzene 9 80 050 ug/1 100 98 70-130 <br /> Toluene 102 050 100 102 70-130 <br /> Ethylbenzene 101 050 100 101 70-130 • <br /> Xylenes(total) 309 050 300 103 70-130 <br /> Methyl tert-butyl ether 11 1 25 100 111 70-130 <br /> Surrogate a a a-Trtfluorotoluene 106 100 106 60-140 <br /> Batch 2060321 -BPA 5030E PIT <br /> Blank(2060321-BLK1) Prepared&Analyzed 06/25/02 <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-Trfluorotoluene 9 70 100 97 60-140 <br /> Sequoia Analytical - Sacramento Die results in this report apply to the samples analyzed to accordance wzth the chain <br /> custody document 77us analytical report must be reproduced in its entirety <br /> Page 3 of 5 <br />