NYC-WTC_000187581

NYC 9/11 Public Portal Document

10/04/2001 17:20 6314676905 PEDNEAULT ASSOCIATES page; 13

[ prepared Exc.lMively For: PBDNEAULTASSOCIATES, INC. NYCDEP-Emergency P.esponse & Tech Assmt. 1611 NINTH AVENUE. BOX 201. BOHEMIA. NT 11716

96-05 Horace Hai’ding Expressway LAB#: 01100065 Corona NY 11368 PROJECT H) WORLD TRADE CENTER-5 Boro Sampling (718)595-4650 MATRIX: AIR\GAS

1 1,1,2-Trichloroethane ND ppb v/v 0.0896 USEPA TO-15 10/3/01 Toluene 3.26 ppb v/v 0.0735 USEPA TO-15 10/3/01 1.2-Dlbromoethane ND ppb v/v 0.0971 USEPA TO-15 10/3/01 T etrachloroethene 0.30 ppb v/v 0.0845 USEPA TO-15 10/3/01 Chlorobenzene ND ppb v/v 0.1343 USEPA TO-15 10/3/01 Ethylbenzene 0.50 ppb v/v 0.0744 USEPA TO-15 10/3/01 m.p-Xylene 1.53 ppb v/v 0.1765 USEPA TO-15 10/3/01 Styrene ND ppb v/v 0.0896 USEPA TO-15 10/3/01 1,1,2.2-TGtrachloroethan€: ND ppb v/v 0.1471 USEPA TO-15 10/3/01 0-Xylene 0.60 ppb v/v 0.0111 USEPA TO-15 10/3/01 1,3,5-Trlmethylbenzene 0.19 ppb v/v 0.0757 USEPA TO-15 10/3/01 1,2,4-Trimethylbenzene 0.61 ppb v/v 0.1511 USEPA TO-15 10/3/01 1,3-Dichlorobenzene ND ppb v/v 0.1564 USEPA TO-15 10/3/01 1,4-Dichlorobenzene ND ppb v/v 0.169 USEPA TO-15 10/3/01 1,2-Dichlorob6nzene ND ppb v/v 0.2014 USEPA TO-15 10/3/01 1,2,4-T richlorobanzene ND ppb v/v 0.1785 USEPA TO-15 10/3/01 Hexechloro-1,3-Butedieni; ND ppb v/v 0.1976 USEPA TO-15 10/3/01 Tentatively Identified Compounds 10/3/01 Butane 1.08 ppb v/v USEPA TO-15 10/3/01 2-Methyl butane 1.62 ppb v/v USEPA TO-15 10/3/01 Acetone 3.52 ppb v/v USEPA TO-15 10/3/01

John Pedneault Page 2 of 14 ND=RESULT IS EQUAL TO OR LESS THAN MDL Lab Director NYSELAP #10224 MWBE /P.6075

CITY_21MC100_0 02968632

NYC-WTC_000187582