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la <br /> Laboratories, Inc <br /> TRC Alton Geosetence Project 6981 <br /> 21 Technology Dnve Pi oject 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 /> BC!_ Sample ID 0506373-13 Client Sample Name 6981, MW-6, MW-6, 6/28/2005 10 01 00AM, 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 07/05/05 07/06/05 1946 svm MS-V4 1 BOG0077 ND <br /> 1 2-Dibromoethane NO ug/L 0 50 0 1 i EPA-8260 07/05/05 07/06/05 1946 svm MS-V4 1 BOG0077 NO <br /> 1 2-dtchloroethane NO ug/L 050 025 EPA-8260 07/05/05 07/06/05 1946 svm MS-V4 1 BOG0077 NO <br /> Ethylbenzene NO ug/L 0 50 013 EPA-8260 07/05/05 07!06105 1946 svm MS-V4 1 BOG0077 NO <br /> Methyl t-butyl ether ND ug/L 0 50 015 EPA-8260 07/05/05 07/06/05 1946 svm MS-V4 1 BOG0077 ND <br /> Toluene NO ug/L 050 015 EPA-8260 07/05/05 07/06/05 1946 svm MS-V4 1 BOG0077 NO <br /> Total Xylenes NO ug/L 1 0 040 EPA-8260 07/05/05 07/06/05 1946 svm MS-V4 1 BOG0077 NO <br /> t-Amyl Methyl ether NO ug/L 050 0 31 EPA-8260 07/05/05 07/06/05 1946 svm MS-V4 1 BOG0077 ND <br /> t-Butyl alcohol NO ug/L 10 10 EPA-8260 07/05/05 07/06/05 1946 svm MS-V4 1 BOG0077 NO <br /> Dusopropyl ether NO ug/L 0 50 025 EPA-8260 07/05/05 07/06/05 1946 svm MS-V4 1 BOG0077 NO <br /> Ethanol NO ug/L 1000 110 EPA-8260 07/05105 07/06/05 1946 svm MS-V4 1 BOG0077 NO <br /> Ethyl t-butyl ether NO ug/L 0 50 027 EPA-8260 07/05/05 07/06/05 1946 svm MS-V4 1 BOG0077 NO <br /> 1,2-13irchloroethane-d4(Surrogate) 993 % 76-114 (LCL-UCL) EPA-8260 07/05105 07/06/05 1946 svm MS-V4 1 BOG0077 <br /> Toluene-d8(Surrogate) 903 % 88-110 (LCL-UCL) EPA-8260 07/05/05 07/06/05 1946 svm MS-V4 1 BOG0077 <br /> 4-Bromofluorobenzene(Surrogate) 91 7 % 86-115 (LCL-UCL) EPA-8260 07/05/05 07/06/05 1946 svm MS-V4 1 BOG0077 <br /> I <br /> BC Laboratories The results in this report apply to the samples analyaed in accordance with the chain of custody document 7hrs analytical report must be reproducedin its entirety, <br /> • All resula listed in this rcporr are for the ex[tusrve use of the submntrng party BC Laboratories Itries no responsibility For repor<alteration sepannon der aJhrtrent or third poi ry tnurpretanon <br /> 4160 Atlas Court• BakersGeld CA 93308• (661) 491 1 • FAX(661) 327-1918 •www bclabs corn Page 29 of 46 <br />