NYC-WTC_000187595

NYC 9/11 Public Portal Document PEDNEAULT ASSOCIATES PAGE 24 10/10/2001 10:46 6314676905

[ Prepared Exclusively For PEDNJSAULTASSOCIATES, INC NYCDEP-Emergency Response & Tech Assmt. AVENUE. BOX205. BOfTEMIA. NY. 11716 96-05 Horace Harding Expressway LAB#: 01100168 Corona , NY 11368 PROJECT ID WORLD TRADE CENTER-5 Boro Sampling (718) 595-4650 MATRIX: AIR\GAS

1 COLLECT DATE DATE RECEIVED RELEASE DATE REPORT DAI’E 10/7/01 5:00 PM 10/8/01 12:25:00 AM 10/9/01 10/9/01 sample ORIGIN TRIP BLANKS SAMPLE n)#: 0110C168-007 RESULT UNITS M.D.L. METHOD ANALYSIS DATE Dichlorodifluoromethane ND pptj v/v 0,123 USEPA TO-15 lO/S/0) Chloromethane ND ppb v/v 0.1037 USEPATO-15 10/8/01 1,2-Dichlorotetrafluoroettiane ND ppb v/v 0.2886 USEPATO-15 10/8/01 Vinyl Chloride ND ppbv/v 0.1249 USEPA TO-15 10/8/01 Bromomethane ND ppb vlv 0.2418 USEPATO-15 10/8/01 Chloroethane ND ppb viv 0.2478 USEPATO-15 10/8/01 TrichlonofluoromethariK ND ppb v/v 0,1839 USEPATO-15 10/8/01 1,1-Dichloroethene ND ppb yly 0.0799 USEPATO-15 10/8/01 Methylene chloride ND ppb vl\i 0.1909 USEPATO-15 10/8/01 Freon 113 ND ppb v/v 0.161 USEPATO-15 10/8/01 1,1-DichloroBthane ND ppb v/v 0.1398 USEPA TO-15 10/8/01 Methyl-tert-butyl ether ND ppb v/v 0.128 USEPATO-15 10/8/01 cis-1,2-Dichloroethen9 ND ppb v/v 0,1783 USEPATO-15 10/8/01 Chloroform ND ppb v/v 0.1681 USEPATO-15 10/8/01 1.2-Dichloroethane ND ppb v/v 0.1683 USEPA TO-15 10/8/01 1,1,1-Trichloroethane ND ppb v/v 0.0974 USEPA TO-15 10/8/01 Benzene ND ppb v/v 0,1201 USEPATO-15 10/8/01 Carbon Tetrachloride ND ppb v/v 0.0922 USEPA TO-15 10/8/01 1,2-Dlchloropropane ND ppb v/v 0.1138 USEPATO-15 10/8/01 Trichloroethene ND ppbv/v 0.1329 USEPA TO-15 10/8/01 ols-1,3-Dichloropropene ND ppb v/v 0.0924 USEPATO-15 10/8/01 trans-1,3-Dichloropropane ND ppb v/v 0.1222 USEPATO-15 10/8/01 1,1,2-Trichloroethane ND ppb v/v 0.0896 USEPATO-15 10/8/01 Toluene ND ppb v/v 0.0735 USEPATO-15 10/8/0) 1,2-Dibromoelhane ND ppbv/v 0.0971 USEPA TO-15 10/8/01 Tetrachloroethene ND ppb v/v 0.0845 USEPATO-15 10/8/01 Chlorobenzene ND ppbv/v 0,1343 USEPA TO-15 10/8/01 Ethylbenzene ND ppb v/v 0.0744 USEPATO-15 10/8/01

John Pedneault Page 13 of 14 ND-RESULT IS EQUAL TO OR LESS THAN MDL Lab Director NYS ELAP #10224 MWBE #^i6075

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NYC-WTC_000187607