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-BC Laboratories, Inc <br /> TRC Alton Geoscience Project: 1 1 195 <br /> 21 Technology Drive Project Number: [none) <br /> Irvine CA,92618-2302 Project Manager: Anju Farfan Reported: 10/13/05 15:57 <br /> Volatile Organic Analysis (EPA Method 8260) <br /> BCL Sample ID: 0508692-02 Client Sample Name: 11195, MW-11, MW-11, 8/31/2005 9:04:OOAM, Melissa/Rick/Basi <br /> Prep Run Instru- QC MB Lab <br /> Constituent Result Units PQL MDL Method Date DatelTime Analyst ment lQ Dilution Batch ID Bias Quals <br /> Benzene ND uglL 0.50 EPA-8260 " 09/02/05 09/03/05 02:57 svm MS-V4 1 8010066 NO <br /> 1,2-Dibrornoethane ND ug/L 0.50 EPA-8260 09102/05 09/03/05 02:57 svm MS-V4 1 B010066 NO <br /> 1,2-Dichloroethane NO uglL 0.50 EPA-8260 09/02/05 09103/05 02:57 Svm MS-V4 1 B010066 ND <br /> Ethylbenzene ND uglL 0.50 EPA-8260 09/02/05 09/03/05 02:57 svm MS-V4 1 B010066 ND <br /> Methyl t-butyl ether NO uglL 0.50 EPA-8260 09/02/05 09/03/05 02:57 svm MS-V4 1 8010066 NO <br /> Toluene ND uglL 0.50 EPA-8260 09102105 09/03/05 02:57 svm MS-V4 1 B0I0066 NO <br /> Total Xylenes NO ug1L 1.0 EPA-8260 09/02/05 09/03105 02:57 svm MS-V4 1 B010066 NO <br /> t-Amyl Methyl ether NO ug/L 0.50 EPA-8260 09/02/05 09/03/05 02:57 svm MS-V4 1 B010066 NO <br /> t-Butyl alcohol NO ug1L 10 EPA-8260 09/02/05 09/03/05 02:57 svm MS-V4 1 B010066 ND <br /> Diisopropyl ether ND uglL 0.50 EPA-8260 09/02/05 09/03/05 02:57 svm MS-V4 1 8010066 ND <br /> Ethanol ND uglL 1000 EPA-8260 09/02/05 09/03/05 02:57 svm MS-V4 1 B010066 ND <br /> Ethyl t-butyl ether NO uglL 0.50 EPA-8260 09/02/05 09/03/05 02:57 svm MS-V4 1 8010066 ND <br /> Total Purgeable Petroleum NO uglL 50 EPA-8260 09/02/05 09/03/05 02:57 svm MS-V4 1 8010066 ND <br /> Hydrocarbons - — <br /> 1,2-Dichloroethane-d4(Surrogate) 95.2 % 76-114 (LCL-UCL) EPA-8260 09/02/05 09/03/05 02:57 svm MS-V4 1 B010066 <br /> Toluene-d8(Surrogate) 100 % 88-110 (LCL-UCL) EPA-8260 09/02105 09/03/05 02:57 svm MS-V4 1 B010066 <br /> 4-Bromofluorobenzene(Surrogate) 87.7 % 86-115 (LCL-UCL) EPA-8260 09/02/05 09/03/05 02:57 svm MS-V4 1 B010066 <br /> BC Labora' '�!s The results in this report apply to tire samples ryzed in accordance with the chain of custody document. This analytical report must be re- -heed in its entirety. <br /> ASI results listed in this report are fur the exclusive use of the submining Parry. BC Laboratories, asauntcs no responsibility for repots alteration,separation.detachment or third parry ititcrprctarion. <br /> 4100 Atlas Court• Bakersfield.CA 93308 • 1661) 327-4911 • FAX (661) 327-1918 •www.bclabs.com Pagel of3t <br />