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819 Stnker Avenue Suite 8 <br /> Sequoia Sacramento c95834 <br /> (916)921-96W 1-9600 <br /> FAX(916)921-0 100 <br /> �,,,,� Analytical www sequoialabs corn <br /> s <br /> Gettler-Ryan-Rancho Cordova Project Former Unocal 0187,Stockton,CA <br /> rted <br /> 3140 Gold Camp Dr,Ste 170 Project Number N/A B`11d <br /> Rancho Cordova CA,95670 Project Manager David Herzog 06/04/02 13 17 <br /> Total Purgeable Hydrocarbon, BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result °AoREC Limits RPD Limit Notes <br /> Batch 2060006-EPA 5030B P <br /> Blank(2060006-BLKI) Prepared&Analyzed 05/30/02 <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-Trifluorotoluene 951 100 95 60-140 <br /> LCS(2060006-BSI) Prepared&Analyzed 05/30/02 <br /> Benzene 970 050 ug11 100 97 70-130 <br /> Toluene 100 050 100 100 70-130 <br /> 0lbenzene 100 050 100 100 70-130 <br /> nes(total) 309 050 300 103 70-130 <br /> Methyl tent-butyl ether 115 25 100 115 70-130 <br /> Surrogate a a a-Trifluorotoluene 107 100 107 60-140 <br /> Matrix Spike(2060006-MSI) Source S205287-23 Prepared&Analyzed 05/30/02 <br /> Benzene 971 050 ug/I 100 ND 97 60-140 <br /> Toluene 999 050 100 ND 100 60-140 <br /> Ethylbenzene 101 050 100 ND 101 60-140 <br /> Xylenes(total) 31 3 050 300 ND 104 60-140 <br /> Methyl tert-butyl ether 123 25 100 ND 123 60-140 <br /> Surrogate a a a-Trifluorotoluene 102 100 102 60-140 <br /> Matrix Spike Dup(2060006-MSDI) Source S205287-23 Prepared&Analyzed 05/30/02 <br /> Benzene 101 050 ug/I 100 ND 101 60-140 4 25 <br /> Toluene 109 0 50 100 ND 109 60-140 9 25 <br /> Ethylbenzene 10 5 050 100 ND 105 60-140 4 25 <br /> Xylenes(total) 327 050 300 ND 109 60-140 4 25 <br /> Methyl tert-butyl ether 12 9 25 100 ND 129 60-140 5 25 <br /> Surrogate a a a-Trifluorotoluene 999 100 100 60-140 <br /> quoia 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 6 of 7 <br />