NYC-WTC_000203356

NYC 9/11 Public Portal Document

[ Prepared Exclusively For: PEDNEAULTASSOCIATES, INC. NYCDEP-Emergency Response & Tech Assmt. 16/S NJNTH^yENUE. BOX205, BOHEMIA, N.Y. 11716

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 riATE 10/28/01 5:15 PM 10/28/01 9:54:00 PM 10/30/01 10/30/01 SAMPLE ORIGIN CENTRAL PARK N. & LENOX , MANHATTAN SAMPLE ID#: 01100508-003 RESULT UNITS M.D.L. METHOD ANALYSIS DATE Dichlorodifluoromethane 0.82 ppb vN 0.123 USEPATO-15 10/29/01 Chloromelhane 0.80 ppb v/v 0.1037 USEPATO-15 10/29/01

1,2-Dichlorotetrafluoroethane 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 USEPATO-15 10/29/01 Trichlorofluoromethane 0.19 ppb vN 0.1839 USEPATO-15 10/29/01 1,1-Dichloroethene ND ppb v/v 0.0799 USEPA TO-15 10/29/01 Methylene chloride ND ppb v/v 0.1909 USEPA TO-15 10/29/01 Freon 113 ND ppb v/v 0.161 USEPA TO-15 10/29/01 1,1-Dichloroethane ND ppb v/v 0.1398 USEPATO-15 10/29/01

Methyl-tert-butyl ether 1.31 ppb v/v 0.128 USEPATO-15 10/29/01 cis-1,2-Dichloroethene ND ppb v/v 0.1783 USEPATO-15 10/29/01 Chloroform ND ppb v/v 0.1681 USEPATO-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 USEPATO-15 10/29/01 Benzene 1.49 ppb v/v 0.1201 USEPATO-15 10/29/01 Carbon Tetrachloride ND ppb v/v 0.0922 USEPATO-15 10/29/01 1,2-Dichloropropane ND ppb v/v 0.1138 USEPATO-15 10/29/01 Trichloroelhene ND ppb v/v 0.1329 USEPATO-15 10/29/01

cis-1,3-Dichloropropene ND ppb v/v 0.0924 USEPATO-15 10/29/01 trans-1,3-Dichloropropene ND ppb v/v 0.1222 USEPA TO-15 10/29/'01 1,1,2-Trichloroethane ND ppb v/v 0.0896 USEPA TO-15 10/29/01 Toluene 1.90 ppb v/v 0.0735 USEPATO-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 0.21 ppb v/v 0.0744 USEPA TO-15 10/29/01

John Pedneault Page 5 of 16 ND=RESULT IS EQUAL TO OR LESS THAN MDL Lab Director NYS ElAP #10224 NR=NON REPORTABLE RESULTS MWBE #46075

CITY_21MC100_003071389

NYC-WTC_000203360