NYC-WTC_000210737

NYC 9/11 Public Portal Document

10/10/200; 10:33 b31<167b90S HEDNtAULI ASbUCIATES PAGE 17

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96-05 Horace Harding Expressway LAB#: 01100166 Corona NY 11368 PROJECT ID WORLD TRADE CENTER-5 Boro Sampling (7IS) 595-4650 MATRIX: AIR\GAS L_____ m.p-Xylena 10.3 ppb v/v 0.1705 USEPA TO-15 10/6/0)

I Styrene 0.34 ppb v/v 0.0396 USEPA TO-15 10/6/01 j 1,1,2,2-Tetrachloroethane ND ppb v/v 0.1471 USEPA TO-15 10/6/01 c-Xylene 4.04 ppb v/v 0.0111 USEPA TO-15 10/6/01 1,3.5-Trimethylbenzene 1.44 ppb v/v 0.0757 USEPA TO-15 10/6/01 1,2,4-Trimetbylbenzene 4.68 ppb v/v 0.1511 USEPA TO-15 10/6/0t 1,3-Dichlorobenzene ND ppb v/v 0.1564 USEPA TO-15 10/6/01 ' ,4-Dichlorob0n2ene 0.33 ppb v/v 0.169 USEPA TO-15 10/6/01

‘1,2-Dichlorobenzene ND ppb v/v 0.2014 USEPA TO-15 10/6/01 1.2,4-Trlotilorob0n2ene ND ppb v/v 0.1785 USEPA TO-15 10/6/01 Hexachloro-1,3-Butadiene ND ppb v/v 0.1976 USEPA TO-15 10/6/01 Tentatively Identified Compounds 10/6/01 Isobutane 1,41 ppb v/v USEPA TO-15 10/6/01 2-Methyl-1 -propene 0.91 ppb v/v USEPA TO-15 10/6/01 3u1ane 1.74 ppb v/v USEPA TO-15 10/6/01 2-Mathyl butane 3.77 ppb v/v USEPA TO-15 10/6/01 Pentane 1.32 ppb v/v USEPA TO-15 10/6/01 2-Methyl Pentane 2,06 ppb v/v USEPA TO-15 10/6/01 3-M9thyl pentane 1.18 ppb v/v USEPA TO-15 10/6/01 2,2,4-Trlmethyl Pentane 1.55 ppb v/v USEPA TO-15 10/6/01

John Pednoauit Page 6 of 14 Lab Director ND=RESUtT IS EQUAL TO OR LESS THAN MDL \YS ELAP *<10224 MWBE #46075

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