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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 /> Quality Control Report - Method Blank Analysis <br /> Constituent Batch 1D QC Sample ID MB Result Units PQL MDL Lab Quals <br /> Benzene B010066 8010066-BLK1 ND ug1L 0.50 0.12 <br /> 1,2-Dibromoethane B010066 B010066-BLKi NO uglL 0.50 0.11 <br /> 1,2-Dichloroethane 8010066 6010066-BLKi NO uglL 0.50 0.25 <br /> Ethylbenzene B010066 8010066-BLK1 NO uglL 0.50 0.13 <br /> Methyl t-butyl ether B010066 B010066-BLK1 NO uglL 0.50 0.15 <br /> Toluene B010066 B010066-BLKi ND uglL 0.50 0.15 <br /> Total Xylenes B010066 B010066-BLK1 NO uglL 1.0 0.40 <br /> t-Amyl Methyl ether 8010066 8010066-BLKi NO ug1L 0.50 0.31 <br /> t-Butyl alcohol B010066 B010066-BLKi ND uglL 10 10 <br /> Diisopropyl ether B010066 8010066-BLK1 NO uglL 0.50 0.25 <br /> Ethanol B010066 8010066-BLKi NO ug1L 1000 110 <br /> Ethyl t-butyl ether B010066 8010066-BLK1 ND ug1L 0.50 0.27 <br /> Total Purgeable Petroleum Hydrocarbons B010066 B010066-BLK1 NO ug1L 50 23 <br /> 1,2-Dichloroethane-d4(Surrogate) B010066 B010066-BLK1 95.8 % 76_114 (LCL-UCL) <br /> Toluene-d8 (Surrogate) B010066 8010066-BLK1 99.0 % 88- 110 (LCL-UCL) <br /> 4-Bromofluorobenzene(Surrogate) B010066 8010066-BLK1 88.2 % 86-115 (LCL_UCL) <br /> Benzene B010100 B0I0100-BLK1 NO ug1L 0.50 0.12 <br /> 1,2-Dibromoethane 8010100 B010100-BLK1 NO uglL 0.50 0.11 <br /> 1,2-Dichloroethane 8010100 8010100-BLKi ND ug1L 0.50 0.25 <br /> Ethylbenzene 8010100 B010100-BLK1 ND uglL 0.50 0.13 <br /> Methyl t-butyl ether B010100 8010100-BLK1 NO uglL 0.50 0.15 <br /> Toluene 8010100 13010100-BLK1 ND ug1L 0.50 0.15 <br /> Total Xylenes 8010100 8010100-BLK1 ND uglL 1.0 0.40 <br /> t-Amyl Methyl ether 8010100 8010100-BLK1 NO uglL 0.50 0.31 <br /> t-Butyl alcohol 8010100 B010100-BLK1 ND ug1L 10 10 <br /> BC Labor, -s The results in this report apply to the sample 'yzed in accordance with tire chair,of custody document. This analytical report must be r, auced in its entirety. <br /> All results listed in this report are for the exclusive use of the submitting party. BC Laboratories,inc.assumes no responsibility for report alterarion,separation,detachmem or third party intrrprerauon. <br /> r 1nn A.1-,�C--,. R 6Pr�FPIa CA 01VIR . (AA It w <br /> U�_4n1 1 . FAX (6611 �?7-1919• wwhmrlabs.coPage 29uf3] <br />