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819 Sinker Avenue Suite 8 <br /> TestAmerica SacAX(91 C 95834 <br /> (916)921 9600 <br /> FAX(916)922 1 0100 <br /> ANALYTICAL TESTING CORPORATION www testamencainc com <br /> • <br /> Blaine Tech Services(Shell) Project Shell 1160 West Yosemite Ave,Manteca S606541 <br /> 1680 Rogers Avenue Project Number 97422510 SAN 168801 Reported <br /> San Jose CA,95112 Project Manager Jason Brown 07/12/06 16 25 <br /> Gasoline\BTEXIOxygenates by EPA method 8260B- Quality Control <br /> TestAmerica- Sacramento,CA <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Linuts RPD Limit Notes <br /> Batch 6070059-EPA 503061P/Tl 1 EPA 82608 <br /> Laboratory Control Sample(6070059-BS3) Prepared&Analyzed 07/07/06 <br /> Methyl tert butyl ether 328 050 ug/l 520 63 60-140 <br /> Toluene 154 050 188 82 70-130 <br /> Gasoline Range Organics(C4-C12) 2210 50 2200 100 70-130 <br /> Surrogate 12 DCA d4 935 100 94 60-140 <br /> Surrogate Toluene d8 102 100 102 60-140 <br /> Surrogate 4-BFB 911 100 91 60-140 <br /> Laboratory Control Sample(6070059-BS4) Prepared&Analyzed 07/07/06 <br /> Methyl tert butyl ether 179 050 ug/1 200 90 60 140 <br /> Benzene 180 0 50 200 90 70-130 <br /> Toluene 204 050 20 0 102 70-130 <br /> 4 <br /> ®rrogate 12-DCA d4 936 10 0 94 60-140 <br /> rogate Toluene-d8102 100 4 60-140 <br /> rogate 4-BFB 935 100 9 9 60-140 <br /> Laboratory Control Sample(6070059-BS5) Prepared&Analyzed 07/10/06 <br /> Toluene 151 0 50 ug/l 188 80 70-130 <br /> Gasoline Range Organics(C4 C12) 2100 50 2200 95 70-130 <br /> Surrogate 12-DCA-d4 8 79 10 0 88 60-140 <br /> Surrogate Toluene-d8 106 100 106 60 140 <br /> Surrogate 4-BFB 969 100 97 60-140 <br /> Laboratory Control Sample(6070059-BS6) Prepared&Analyzed 07/10/06 <br /> Methyl tert-butyl ether 168 0 50 ug/l 20 0 84 60-140 <br /> Benzene 17 8 050 200 89 70-130 <br /> Toluene 204 050 200 102 70 130 <br /> Surrogate 1 2-DCA-d4 8 86 100 89 60-140 <br /> Surrogate Toluene-d8 106 100 106 60-140 <br /> Surrogate 4-BFB 943 100 94 60-140 <br /> TestAmenca-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 7 of 9 <br />