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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 Managei Anju Farfan Reported 07/08/05 10 51 <br /> Volatile Organic Analysis (EPA Method 8260) <br /> BCL Sample ID 0506373-08 Client Sample Name 6981, MW-16, MW-16, 6/28/2005 10 06 OOAM, Bast/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 Qualls <br /> Benzene 9 0 uglL 050 0 12 EPA-8260 07/01/05 07/02/05 0905 svm MS-V4 1 BOG0008 ND <br /> 1,2-Dibromoethane ND uglL 050 Oil EPA-8260 07/01/05 07/02/05 0905 svm MS-V4 1 BOG0008 ND <br /> 1 2-Dichloroethane ND ug1L 0 50 025 EPA-8260 07/01/05 07/02/05 0905 svm MS-V4 1 BOG0008 NO <br /> Ethylbenzene 24 ug1L 050 013 EPA-8260 07/01/05 07/02/05 0905 svm MS-V4 1 BOG0008 NO <br /> Methyl t-butyl ether 22 uglL 0 50 015 EPA-8260 07/01105 07/02/05 0905 svm MS-V4 1 BOG0008 NO <br /> Toluene 019 ug/L 0 50 015 EPA-8260 07/01/05 07/02/05 0905 svm MS-V4 1 BOG0008 NO ,1 <br /> Total Xylenes 4 0 ug1L 10 040 EPA-8260 07/01/05 07/02/05 0905 svm MS-V4 1 BOG0008 NO <br /> t-Amyl Methyl ether ND uglL 050 0 31 EPA-8260 07/01/05 07/02/05 0905 svm MS-V4 1 BOG0008 NO <br /> t-Butyl alcohol NO ug1L 10 10 EPA-8260 07/01/05 07/02/05 0905 svm MS-V4 1 BOG0008 ND <br /> Dinsopropyl ether ND ug1L 0 50 025 EPA 8260 07/01/05 07/02/05 0905 svm MS-V4 1 BOG0008 ND <br /> Ethanol ND uglL 1000 110 EPA-8260 07/01/05 07/02/05 0905 svm MS-V4 1 BOG0008 ND <br /> Ethyl t-butyl ether ND uglL 050 027 EPA-8260 07/01/05 07/02/05 0905 svm MS-V4 1 6000008 ND <br /> 1 2-Dichloroethane-d4(Surrogate) 94 3 % 76-114 (LCL-UCL) EFA-8260 07/01/05 07/02/05 0905 svm MS-V4 1 BOG0008 <br /> Toluene-d8(Surrogate) 988 % 88-110 (LCL-UCL) EPA-8260 07/01/05 07/02/05 0905 svm MS V4 1 BOG0008 <br /> 4-Brornoftuorobenzene(Surrogate) 927 % 86- 115 (LCL-UCL) EPA-6260 07/01/05 07/02/05 0905 svm MS-V4 1 BOG0008 <br /> f <br /> I <br /> I I <br /> BC Laboratories The results in this report apply to rhe samples anahzed in accordance with the chain of custody document This analytical reportmust be rept ed to its entire N, <br /> All results listed m this report are fur the exclusive use of the submtung parry BC t.aboratorin 1 mes no responsdnliry for report alrer cion separ mon detachment or third parry mterpretannn <br /> 4100 Arlas Court•Bakersfield,CA 93308• (661) 491 1 • FAX(661) 327-1918•wwwbcl ibs coin Page 19 of 46 <br />