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i <br /> a 19 Striker Ave Ste 8 <br /> Sequoia Sacramento CA 95834 <br /> i <br /> Analytical FAX(916)921 0100 <br /> (916}92t OIoO <br /> www sequoialabs coni <br /> i <br /> Blaes Environmental Project U-Haul 5405616 <br /> i 1455 N Irl Ave Project Number 709-50/Stockton Reported <br /> Phoenix AZ,85005 Project Manager Steve Woodhill 06/11/04 16 01 <br /> GasolmelBTEXIOxygenates by EPA method 8260B- Quality Control <br /> iSequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyle Result Limit Units Level Result %REG Limits RPD Limit Notes <br /> Batch 4050370-EPA 5030B [PIT] <br /> Laboratory Control Sample(4050370-BSI) Prepared&Analyzed 05/28/04 <br /> Methyl tert-butyl ether 8 57 0 50 ugtl 8 64 99 60-140 <br /> Benzene 5 17 0 50 5 36 96 70-130 <br /> Toluene 32 0 0 50 303 106 70-130 <br /> Gasoline Range Organics(C4-C12) 383 50 440 87 70-130 <br /> Surrogate Toluene-d8 103 100 103 60-140 <br /> Surrogate 4-BFB 9 38 100 94 60 140 <br /> Surrogate 12-DCA-d4 9 55 10 0 96 60 140 <br /> Laboratory Control Sample(4050370-BS2) Prepared 06/01/04 Analyzed 06/02/04 <br /> Methyl tert-butyl ether 8 39 0 50 ugA 8 64 97 60-140 <br /> Benzene 5 00 0 50 5 36 93 70 130 <br /> 0uene 31 8 0 50 30 3 105 70 130 <br /> ohne Range Organics(C4-C 12) 414 50 440 94 70-130 <br /> Surnogare Toluene-d8 10 1 100 101 60-140 <br /> Surrogate 4 BFB 9 39 100 9.1 60-140 <br /> Surrogate 12 DCA-d4 9 65 10 0 96 60-140 <br /> Matrix Spike(4050370-MSI) Source 5405403-03 Prepared&Analyzed 06/01/04 <br /> Methyl tert-butyl ether 8 07 0 50 ug/l 864 �ND 93 60-140 <br /> Benzene 5 03 0 50 " 5 36 0 33 88 70-130 <br /> Toluene 32 1 0 50 303 ND 106 70-130 <br /> Gasoline Range Organics(C4-C12) 464 50 440 ND 105 60-140 <br /> Surrogate Toluene-d8 10 1 „ 10 0 101 60-140 <br /> Surrogate 4-BFB 954 10 0 95 60-140 <br /> Surrogate 12-DCA-d4 9 63 100 96 60-140 <br /> Matrtr Spike Dup(4050370-MSM) Source 5405403-03 n Prepared&Analyzed 06/01/04 <br /> Methyl tert-butyl ether 726 0 50 ug/I 864 ND 84 60-140 11 25 <br /> Benzene 4 58 0 50 5 36 0 33 79 70-130 9 25 <br /> Toluene 33 4 0 50 30 3 ND 110 70-130 4 25 <br /> Gasoline Range Organics(C4-C12) 449 50 440 ND 102 60-140 3 25 <br /> Surrogate Toluene-d8 108 100 108 60-140 <br /> Surrogate 4-BFB 9 21 100 91 60-140 <br /> ISurrogate 1 2-DCA-d4 8 31 100 83 60-140 <br /> ISequoia Analytical-Sacramento The results in this report apply to the samples analyzed to accordance with the chain <br /> 0 of custody document Unless othernvrse stated results are reported on a wet weight <br /> bases This analytical report must be reproduced in its entirety <br /> Page 30 of 39 <br />