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BC Laboratories, Inc <br /> TRC Alton Geoscience Project 6981 <br /> 21 Technology Drive Project Number [none] <br /> Irvine CA,92618-2302 Project Manager Anju Farfan Reported 07/08/05 10 51 <br /> Volatile Organic Analysis (EPA Method 8260) <br /> BCL Sample ID 0506373-03 Client Sample Name 6981, MW-5, MW-5, 6/28/2005 8 28 00AM, Basi/Melissa <br /> Prep Run Instru- QC MB Lab <br /> Constituent Result Units PQL MDL Method Date Date/Time Analyst ment ID Dilution Batch ID Bias Quals <br /> Benzene ND ug/L 0 50 012 EPA-8260 07/01/05 07/02/05 0608 svm MS-V4 1 BOG0008 ND <br /> 1,2-Dibromoethane ND uglL 0 50 Oil EPA-8260 07/01/05 07/02/05 0608 svm MS-V4 1 BOG0008 ND <br /> 1 2-Dlchloroethane ND uglL 0 50 025 EPA-8260 07/01/05 07/02/05 0608 svm MS-V4 1 BOG0008 ND <br /> Ethylbenzene ND ug/L 0 50 013 EPA-8260 07/01/05 07/02/05 0608 svm MS-V4 1 BOG0008 ND <br /> Methyl t-butyl ether ND uglL 0 50 015 EPA-8260 07/01/05 07/02/05 0608 svm MS-V4 1 BOG0008 ND <br /> Toluene ND uglL 050 015 EPA-8260 07/01/05 07/02/05 0608 svm MS-V4 1 BOG0008 ND <br /> Total Xylenes ND ug1L 10 040 EPA-8260 07/01/05 07/02/05 0608 svm MS-V4 1 BOG0008 ND <br /> t-Amyl Methyl ether ND uglL 050 0 31 EPA-8260 07/01/05 07/02/05 0608 svm MS-V4 1 BOG0008 ND <br /> i <br /> t-Butyl alcohol ND uglL 10 10 EPA-8260 07/01/05 07/02/05 0608 svm MS-V4 1 BOG0008 ND <br /> Dusopropyl ether ND uglL 0 50 025 EPA-8260 07/01/05 07/02/05 0608 svm MS-V4 1 BOG0008 ND <br /> Ethanol ND uglL 1000 110 EPA-8260 07/01/05 07/02/05 0608 svm MS-V4 1 BOG0008 NO <br /> Ethyl t^butyl ether ND ug1L 050 027 EPA-8260 07/01/05 07/02/05 0608 svm MS-V4 1 BOG0008 ND <br /> 1,2-Dlchloroethane-d4(Surrogate) 100 % 76- 114 (LCL-UCL) EPA-8260 07/01/05 07/02/05 0608 svm MS-V4 1 BOG0008 <br /> Toluene-d8(Surrogate) 978 % 88-110 (LCL-UCL) EPA-8260 07/01/05 07/02/05 0608 svm MS V4 1 BOG0008 <br /> 4-Bromofluorobenzene(Surrogate) 89 8 % 86-115 (LCL-UCL) EPA-8260 07/01/05 07/02/05 0608 svm MS-V4 1 BOG0008 <br /> I r <br /> BC Laboratories The results in this report apply to the samples an zed rn accordance with the chain of custody document This analytical report must be repro ed to its entirety <br /> All trsults listed in this report are For rhe Lxclusne use of die cubmitnng parry 6C Liborttones 1 tiles no iesponsthiliry For report alteration separation dstadiment or third party mterpru ttton <br /> 4100 Atlas Court•WlkersField,CA 93308• (661) -4911 • MX (661) 327-1918•www bclabs coni Page 9 of 46 <br />