Air sample lab report, World Trade Center, Oct 2001

NYC 9/11 Public Portal Document

10/31/2001 11:41 6314676905 PEDNEAULT ASSOCIATES =’AeE 02/03

[ Prepared Exclusively For. PBDNEA UL T ASSOCU TES, INC. NYCDEP-Eraergency Response- & Tech Assmt. ItlsmfTffAf^NUE. BOX2n5, BOHEMTA. ff-Y. 1/716 96-05 Horace Harding Expressway LAB#: 01100508 Corona NY 11368 PROJECT ID WORLD TRADE CENTER- 5 Boro Sampling (718) 595-4650 MATRIX: AIR\GAS

COLLECT DATE DATE RECEIVED RELEASE DATE REPORT DATE 10/28/01 10/28/01 9:54:00 PM 10/30/01 10/30/01 SAMPLE ORIGIN TRIP BLANKS SAMPLE ID#: 01100508-008 RESULT UNITS M.D.L METHOD ANALYSIS DATE Dichlorodifluoromethane ND ppb v/v 0.123 USEPA TO-15 10-^9/01 Chloromethane ND ppb v/v 0.1037 USEPA TO-15 10/29/01 1,2-Dichlorot8trafluoroethane ND ppb v/v 0.2886 USEPA TO-15 10/29/01 Vinyl Chloride ND ppb v/v 0.1249 USEPA TO-15 10/29/01 Bromomethane ND ppb v/v 0.2418 USEPA TO-15 10/29/01 Chloroethane ND ppb v/v 0.2478 USEPA TO-15 10/29/01 Trichlorofluoromethanei ND ppb v/v 0.1839 USEPA TO-15 10/29/01 1.1-Dichloroethene ND ppb v/v 0.0799 USEPA TO-15 10/219/01 Methylene chloride ND ppb viv 0.1909 USEPA TO-15 10/2:9/01 Freon 113 ND ppb v/v 0.161 USEPA TO-15 10/29/01 1,1-Dichloroethane ND ppb v/v 0.1398 USEPA TO-15 10/29/01 Methyl-tert-butyl ether NO ppb v/v . 0.128 USEPA TO-15 10/29/01 cis-1,2-Dichloroethene ND ppb v/v 0,1783 USEPA TO-15 10/29/01 Chloroform ND ppb v/v 0.1681 USEPA TO-15 10/29/01 1,2-Dichloroethane ND ppb v/v 0.1688 USEPA TO-15 10/29/01 1,1,1-Trichloroethane ND ppb v/v 0.0974 USEPA TO-15 10/29/01 Benzene ND ppb v/v 0.1201 USEPA TO-15 10/29/01 Carbon Tetrachloride ND ppb v/v 0.0922 USEPA TO-15 10/29/01 1,2-Dlchloropropane ND ppb v/v 0.1138 USEPA TO-15 10/29/01 Trichloroethene ND ppb v/v 0,1329 USEPA TO-15 10/29/01 cis-1,3-Dichloropropene ND ppb v/v 0.0924 USEPA TO-15 10/29/01 trans-1,3-Dlchloropropene ND ppb v/v 0.1222 USEPA TO-15 10/29/01 1,1,2-Trichloroethane ND ppb v/v 0.0696 USEPA TO-15 10/29/01 Toluene ND ppb v/v 0.0735 USEPA TO-15 10/29/01 1,2-Dibromoethane ND ppb v/v 0.0971 USEPA TO-15 10/29/01 Tetrachloroethene ND ppb v/v 0.0845 USEPA TO-15 10/29/01 Chlorobenzene ND ppb v/v 0.1343 USEPA TO-15 10/29/01 Ethylbenzene ND ppb v/v 0.0744 USEPA TO-15 10/29/01

John Pedneault Page 15 of 16 Lab Director ND=RESULT IS EQUAL TO OR LESS THAN MDL NYSE LAP #10224 NR=NON REPORTABLE RESULTS MV/BE ^46075

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