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k-BC >- Laboratories, Inc <br /> TRC Alton Geoscience Project: l 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 8264) <br /> Quality Control Report - Method Blank Analysis <br /> Constituent Batch ID QC Sample ID MB Result Units PQL MDL Lab Quals <br /> Diisopropyl ether 13010100 B010100-BLK1 ND ug/L 0.50 0.25 <br /> Ethanol 13010100 8010100-BLK1 ND ug/L 1000 110 <br /> Ethyl t-butyl ether B010100 B010100-BLK1 ND ug/L 0.50 0.27 <br /> Total Purgeable Petroleum Hydrocarbons 13010100 B010100-BLK1 ND ug/L 50 23 <br /> 1,2-Dichloroethane-d4(Surrogate) B010100 B010100-BLK1 99.1 % 76-114 (LCL-UCL) <br /> Toluene-d8(Surrogate) 8010100 8010100-BLK1 103 % 88-110 (LCL-UCL) <br /> 4-Bromofluorobenzene(Surrogate) 8010100 8010100-BLK1 89.3 % 86-115 (LCL-UCL) <br /> BC Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. <br /> All results listed in this report ar<for the exclusive use oFthe submitting parry. BC Lahoratories,Inc.assumes no responsibility for report alterarion,separation,detachment or third para•interpretation. <br /> G t nn A,l—r tet. CA 4A3nR. (t',6 1) A77-491 1 • FAX (66 1) 377-1919 0 www.bclabs.com Page 30 oF31 <br />