NYC-WTC_000187581

NYC 9/11 Public Portal Document

10/04/2001 17:20 6314676905 PEDNEAULT ASSOCIATES PAGE 21

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96-05 Horace Harding Expressway LAB#: 01100065 Corona NY 11368 PROJECT ID WORLD TRADE CENTER-5 Boro Sampling (718)595-4650 MATRIX: AlR\GAS

I m.p-Xylene 4.28 ppb v/v 0.1785 USEPATO-15 10/3/01 Styrene 0.27 ppb v/v 0.0896 USEPA TO-15 10/3/01 1,1,2,2-Tetrachloroethane ND ppb v/v 0.1471 USEPA TO-15 10/3/01 0-Xylene 1.52 ppb v/v 0.0111 USEPATO-15 10/3/01 1,3,5-Trimettiylbenzene 0.47 ppb v/v 0.0757 USEPATO-15 10/3/01 1,2,4-TrimGthylbenzena 1.46 ppb v/v 0.1511 USEPATO-15 10/3/01 1,3-D'ichlQrob6rzene 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-Dlchloroben2ene ND ppb v/v 0.2014 USEPA TO-15 10/3/01 1,2,4-Trichlorob0nzene ND ppb v/v 0.1785 USEPA TO-15 10/3/01 Hexachloro-1,3-Buta diene ND ppb v/v 0.1976 USEPATO-15 10/3/01 Tentatively Identified Compounds 10/3/01 Isobutane 4.01 ppb v/v USEPA TO-15 10/3/01 2-Mefhyl-1-propene 1.51 ppb v/v USEPA TO-15 10/3/0) Butane 5.46 ppb yl\i USEPA TO-15 10/3/01 2-Methyl butane 11.6 ppb v/v USEPA TO-15 10/3/01 2-Methyl-2-but0ne 1.17 ppb v/v USEPA TO-15 10/3/01 Pentane 6.89 ppb v/v USEPA TO-15 10/3/01 2-Methyl-l-butene 1.21 ppb v/v USEPA TO-15 10/3/01 2.3-dimethyl butane 1.44 ppb v/v USEPA TO-15 10/3/01 3-Methyl pentane 1.47 ppb v/v USEPA TO-15 10/3/01 N,N-Dlmethylactamide 3.27 ppb v/v USEPA TO-15 10/3/01

John Pedneault Page 10 of 14 ND=RESULT IS EQUAL TO OR LESS THAN MDL Lab Director NYS ELAP #10224 MWBE #16075

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