NYC-WTC_000187271

NYC 9/11 Public Portal Document

10/23/2001 15; 03 6314676905 PEDNEAULT ASSOCIATES PAGE 14

[ Prgpared Exclujively For: PEDNEAULT ASSOCIATES, INC. NYCDEP-Emergency Response & Tech Assmt. l61iNmTHAf'£l^UE, BOX20S. BOHEMfA. N Y. 11716

96-05 Horace Harding Expressway LAB#: 01100404 Corona NY 11368 PROJECT ID WORLD TRADE CENTER- 5 Boro Sampling (718) 595-4650 MATRIX: A1R\GAS

COLLECT DATE DATE RECEIVED RELEASE DATE RjerORT DATE 10/21/01 5:45 PM 10/21/01 10:20:00 AM 10/23/01 10/23/01 SAMPLE ORIGIN CENTRAL PARK N, & LENOX. MANHATTAN SAMPLE DD#: 01100404-003 RESULT UNITS M.D.L. METHOD ANALYSIS DATE Dichlorodifluoromethane 0.62 ppb v/v 0.123 USEPATO-15 10/22/01 Chloromethane 0.92 ppb v/v 0.1037 USEPATO-15 10/22/01 i 1,2'Dichlorotetrafluoroethane ND ppb v/v 0.2886 USEPArO-15 10/22/01 Vinyl Chloride ND ppb v/v 0.1249 USEPATO-15 10/22/01 Bromomethane ND ppb v/v 0.2418 USEPATO-15 10/22/01 Chloroethane ND ppb v/v 0.2478 USEPATO-15 10/22/01 ; Trichlorofluoromethane 0.24 ppbvN 0.1839 USEPATO-15 10/22/01 1,1-Dlchloroethen9 ND ppb v/v 0.0799 USEPATO-15 10/22/01 Methylene chloride ND ppb v/v 0,1909 USEPATO-15 10/22/01 Freon 113 ND ppb v/y 0.161 USEPATO-15 10/22/01 1.1-Dichloroethane ND ppb v/v 0.1398 USEPATO-15 10/22/01 Methyl-tert-butyl ether 0.78 ppb v/v 0.126 USEPATO-15 10/22/01 Cls-1,2-Dichloroethene ND ppb v/v 0.1783 USEPATO-15 10/22/01 Chloroform ND ppb v/v 0.1681 USEPATO-15 10/22/01 1,2-Dichloroethane ND ppb v/v 0.1688 USEPATO-1S 10/22/01 1,1,1-Trichloroethane ND ppb v/v 0.0974 USEPA'ro-15 10/22/01 Benzene 0.37 ppb v/v 0.1201 USEPA TO-1S 10/22/01 Carbon Tetrachloride 0.11 ppb v/v 0.0922 USEPATO-15 10/22/01 1,2-Dichloropropane ND ppb v/v 0.1138 USEPA TO-1S 10/22/01 Trichloroethene ND ppb v/v 0.1329 USEPATO-15 10/22/01

cis-1,3-Dichloropropene ND ppb v/v 0.0924 USEPA TO-15 10/22/01 : trans-1,3-Dlchloropropene ND ppb v/v 0.1222 USEPATO-1S 10/22/01 1,1,2-T richloroethane ND ppb v/v 0.0896 USEPA TO-15 10/22/01 Toluene 0.73 ppb v/v 0.0735 USEPATO-15 10/22/01 1,2-Dibromoethane NO ppb v/v 0.0971 USEPATO-15 10/22/01 Tctrachloroethene NO ppb v/v 0.0845 USEPATO-15 10/22/01 Chlorobenzene ND ppb v/v 0.1343 USEPATO-15 10/22/01 Ethylbenzene 0,11 ppb v/v 0.0744 USEPATO-15 10/22/01

John Pedneault Page 5 of 16 ND=RESULT IS EQUAL TO OR LESS THAN MDL Lab Director NYS ELAP #10224 MWBE #46075

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NYC-WTC_000187275