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l� <br /> BC <br /> 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 /> I <br /> BCL Sample ID 0506373-04 Client Sample Name 6981, PTW-1, PTW-1, 6/28/2005 9 30 OOAM, 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 NO ug/L 050 012 EPA-8260 07/01/05 07/02/05 0638 svm MS-V4 1 BOG0008 NO <br /> 1 2-Dtbromoethane NO ug/L 050 Oil EPA-8260 07/01/05 07/02/05 0638 svm MS-V4 i BOG0008 ND <br /> 1 2-Dlchloroethane NO ug1L 050 025 EPA-8260 07/01/05 07/02/05 0638 svm MS-V4 1 BOG0008 NO <br /> Ethylbenzene ND ug/L 050 013 EPA-8260 07/01/05 07/02/05 0638 svm MS-V4 1 BOG0008 NO <br /> Methyl I-butyl ether ND ug/L 050 015 EPA-8260 07/01/05 07/02/05 0638 svm MS V4 1 BOG0008 NO <br /> Toluene ND ug/L 050 015 EPA-8260 07/01/05 07/02/05 0638 svm MS-V4 1 BOG0008 NO <br /> Total Xylenes ND ug/L 10 040 EPA-8260 07/01/05 07/02/05 0638 svm MS-V4 1 BOG0008 NO <br /> t-Amy!Methyl ether NO uglL 050 031 EPA-8260 07/01/05 07/02/05 0638 svm MS-V4 1 B000008 NO <br /> t-Bucy!alcohol NO uglL 10 10 EPA-8260 07/01/05 07/02/05 0638 svm MS-V4 1 BOG0008 NO <br /> Dusopropyl ether ND ug1L 0 50 025 EPA-8260 07/01/05 07/02/05 0638 svm MS-V4 1 BOG0008 NO <br /> Ethanol NO uglL 1000 110 EPA-8260 07/01/05 07/02/05 0638 svm MS V4 1 BOG0008 ND <br /> Ethyl t-butyl ether NO ug1L 050 027 EPA-8260 07/01/05 07102/05 0638 svm MS-V4 1 BOG0008 NO <br /> 1 2-Dtchloroethane-d4(Surrogate) 100 % 76-114 (LCL-UCL) EPA-8260 07/01/05 07/02/05 0638 svm MS-V4 1 BOG0008 <br /> Toluene-M(Surrogate) 973 % 88-110 (LCL-UCL) EPA-8260 07/01/05 07/02/05 0638 svm MS-V4 1 BOG0008 <br /> 4-Bromofluorobenzene(Surrogate) 896 % 86- 115 (LCL-UCL) EPA-8260 07/01/05 07/02/05 0638 svm MS-V4 1 BOG0008 <br /> I <br /> i <br /> BC Laboratories The results in this report apply to the samples anal zed in accordance with the chain of custody document This analytical report must be repro in its entirety <br /> . All rCSOIt!listed to this report are for the LXLIL1J1Ve use of the submirri%parry BC l aborausnes [ ntzs no responvbihq for report alteration separru rn detachment or third p ury tnterpruanrm d <br /> � - <br /> 4100 Arias Court• Bakersfietd,CA 93308 • (66 1) -4911 • FAX (661)327-1918 •www bd ibs coni Page 11 of 46 <br />