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819 Sinker Avenue Suite 8 <br /> TestAmerica SacramentoC2 95834(916)921-9600 <br /> FAX(916)921-0100 <br /> ANALYTICAL TESTING CORPORATION www testaraeneamc corn <br /> Blaine Tech Services(Shell) Project Shell 2320 N Eldorado,Stockton S607171 <br /> 1680 Rogers Avenue Project Number 97471966 SAP# 136145 Reported <br /> San Jose CA,95112 Project Manager Jason Brown 07/24/06 15 52 <br /> Gasollne\BTEXIOxygenates by EPA method 8260B- Quality Control <br /> TestAmerica - Sacramento,CA <br /> Reporting Spike Source 01ARC RPD <br /> EAnalyt,e Result Limit Units Level Result %REC Limits RPD Linut Notes <br /> Batch 6070218-EPA 5030B PIT /EPA 8260B <br /> Laboratory Control Sample(6070218-BSI) Prepared 07/19/06 Analyzed 07/20/06 <br /> Methyl tent-butyl ether 358 050 ug/l 520 69 60-140 <br /> Toluene 155 0 50 188 82 70-130 <br /> Gasoline Range Organics(C4-C12) 2310 50 2200 105 70-130 <br /> Surrogate 12-DCA-d4 104 100 104 60-140 <br /> Surrogate Toluene-d8 992 100 99 60-140 <br /> Surrogate 4-BFB 103 100 103 60-140 <br /> Laboratory Control Sample(6070218-BS2) Prepared 07/19/06 Analyzed 07/20/06 <br /> Methyl tert-butyl ether 208 050 ug/l 200 I04 60-140 <br /> Benzene 22 1 050 20 0 110 70-130 <br /> Toluene 202 050 200 101 70-130 <br /> Surrogate 1 2-DCA-d4 10 4 ;i 100 104 60-140 <br /> s <br /> Surrogate Toluene-d8 981 100 98 60-140 <br /> Surrogate 4-BFB 105 100 105 60-140 <br /> Laboratory Control Sample(6070218-BS3) Prepared&Analyzed 07/20/06 <br /> Methyl tert-butyl ether 38 6 0 50 u8A 520 74 60-140 <br /> Toluene 153 050 188 81 70-130 <br /> Gasoline Range Organics(C4-C12) 2300 50 2200 105 70-130 <br /> Surrogate 12-DCA-d4 103 100 103 60-140 <br /> Surrogate Toluene-d8 9 82 100 98 60-140 <br /> Surrogate 4-BFB 9 63 100 96 60-140 <br /> Laboratory Control Sample(6070218-BS4) Prepared&Analyzed 07/20/06 <br /> Methyl tert-butyl ether 21 7 050 ug/l 200 108 60-140 <br /> Benzene 21 3 0 50 200 106 70-130 <br /> Toluene 21 8 050 200 109 70-130 <br /> Surrogate 1,2-DCA-d4 10 6 100 106 60-140 <br /> Surrogate Toluene d8 997 100 100 60-140 <br /> Surrogate 4-BFB 101 100 101 60-140 <br /> TestArnerica- Sacramento,CA The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 6 of 8 <br />