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I <br /> Sequoia Bl9rAve Ste <br /> .Yr <br /> Sacramento CA 95834834 <br /> (916)921 9600 <br /> i11W Analytical FAX(916)921 OHO <br /> www scquoialabs com <br /> Blaes Environmental Project U-Haut S503448 <br /> 1 1433 N 3rd Ave Project Number 709-50 Reported <br /> Phoenix AZ, 85003 Project Manager Steve Woodhull 04/05/05 08 41 <br /> Gas oline\BTEXIOxygenate s by EPA method 8260B - Quality Control <br /> ' Sequoia Analytical - Sacramento <br /> Reporting Spike Source %R-EC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 5030450-EPA 5030B PIT /EPA 8260B <br /> Laboratory Control Sample(5030450-BSI) Prepared&Analyzed 03/26/05 <br /> Methyl tert-butyl ether 197 050 ug/1 200 98 60 140 <br /> Benzene 20 9 0 50 200 104 70-130 <br /> Toluene 20 9 050 200 104 70-130 <br /> Surrogate 11-DCA-d4 9 43 " 100 94 60-140 <br /> Surrogate Toluene-d8 101 loo 101 60-140 <br /> Surrogate 4 BFB 951 loo 95 60-140 <br /> Laboratory Control Sample(5030450-BS2) Prepared&Analyzed 03/26/05 <br /> Methyl tert butyl ether 433 050 ugll 43 2 100 60-140 <br /> Benzene 297 050 268 111 70-130 <br /> Toluene 168 050 152 111 70-130 <br /> asolme Range Organics(C4-C12) 2120_ _ 50 2200 96 70 130 - <br /> urrogate 12-DCA-d4 950 10 0 95 60 140 <br /> Surrogate Toluene d8 101 10 0 101 60-140 <br /> ' Surrogate 4 BFB 110 too 110 60-140 <br /> Laboratory Control Sample Dup(5030450-ESDI) Prepared&Analyzed 03/28/05 <br /> Methyl tert-butyl ether 19 9 050 ug/l 20 0 100 60-140 I 25 <br /> Benzene 204 050 " 200 102 70-130 2 25 <br /> Toluene 21 1 050 200 106 70-130 1 25 <br /> i <br /> Surrogate 11-DCA-d4 8 68 100 87 60-140 <br /> I ' Surrogate Toluene-d8 101 ;i 100 101 60 140 <br /> Surrogate 4-BFB 10 7 100 107 60-140 <br /> Matrix Spike(5030450-MSI) Source S503636-07 Prepared&Analyzed 03/28/05 <br /> Methyl tert-butyl ether 207 050 ugl 20 0 ND 104 60-140 <br /> Benzene 20 8 050 " 200 ND 104 70 130 <br /> Toluene 213 050 200 ND 106 70-130 <br /> Surrogate 12-DCA-d4 8 63 100 86 60-140 <br /> Surrogate Toluene-d8 100 loo 100 60 140 <br /> Surrogate 4-BFB 102 100 101 60 140 <br /> 1 equota Analytical-Sacramento The results in this report apply to the samples analy2ed rn 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 i eproduced in its enitrety <br /> ' Page 29 of 41 <br />