NYC-WTC_000187581

NYC 9/11 Public Portal Document

10/04/2001 17:20 6314676905 PEDNEAULT ASSOCIATES PAQE 19

r Prepared Excbatvely For: PEDNEA ULTASSOCIATES, INC NYCDEP-Emergencj' Response & Tech Assmt. leiSNlKTHAKENUE, BOX205. BOHEMSA. H Y 11716 96-05 Horace Harding Expressway LAB#: 01100065 Corona , NY 11368 PROJECT ID WORLD TRADE CENTER-5 Boro Sampling (718) 595-4650 MATRIX: AIR\GAS

L—- m,p-Xylene 2.25 ppb v/v 0.1785 USEPA TO-15 10/3/0] Styrene 0.12 ppb v/v 0.0896 USEPA TO-15 10/3/01 1,1,2,2-Tetrachloroethan(i ND ppb v/v 0.1471 USEPA TO-15 10/3/01 D-Xylsne 0.82 ppb v/v 0.0111 USEPA TO-15 10/3/01 1,3,5-Trimethylbenzentj 0.37 ppb v/v 0.0757 USEPA TO-15 10/3/01 1,2,4-Trlmethylben2ene 1.07 ppb v/v 0.1511 USEPA TO-15 10/3/01 1,3-Dich(orobenzerie ND ppb v/v 0.1564 USEPA TO-15 10/3/01 1,4-Dichlorob9nzen0 0.23 ppb v/v 0.169 USEPA TO-15 10/3/01 1,2-DichlorobQnz8ne ND ppb v/v 0.2014 USEPA TO-15 10/3/01 1,2,4-T richlorobenzene ND ppb v/v 0.1785 USEPA TO-15 10/3/01 Hexachloro-1,3-Butadlen» ND ppb v/v 0.1976 USEPA TO-15 10/3/01 Tentatively Identified Compounds 10/3/01 Isobutane 2.26 ppb v/v USEPA TO-15 10/3/01 Butane 2.81 ppb v/v USEPA TO-15 10/3/01 2-Methyl butane 4.69 ppb v/v USEPA TO-15 10/3/01 2-Melhyl Pentane 1.41 ppb v/v USEPA TO-15 10/3/01 Methylcyclopentane 1.02 ppb v/v USEPA TO-15 10/3/01

John Pednoault Page 8 of 14 ND=RESULT IS EQUAL TO OR LESS THAN MDL Lab Director NYS ELAP #10224 MW0E #4.6075

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NYC-WTC_000187588