NYC-WTC_000187612

NYC 9/11 Public Portal Document

10/17/2001 10:50 6314676905 PEDNEAULT ASSOCIATES PASt 03

Prepared Exc.'usivefy For: P£DNjEAULTASSOCrAT]ES, INC. 1615N!l<rHAyEmE. BOX205. BOHEMU. 11716 NYCDEP-Emergency Response & Tech Assmt. 96-05 Horace Harding Expressway LAB#: 01100280 Corona NY 11368 PROJECT ID WORLD TRADE CENTER-5 Boro Sampling

(718) 5S5-4650 MATRIX: AIRVGAS

I ___ 1.1,2-Trichloroethane ND ppb v/v 0.0896 USEPATO-15 10/14/01

Toluene 7.13 ppb v/v 0.0735 USEPATO-15 10/14/01 1,2-DibromoetlianG ND ppb v/v 0.0971 USEPA TO-15 10/14/01 Tetrachloroethane 0.17 ppb v/v 0.0645 USEPATO-15 10/14/01

Chlorobenzene ND ppb v/v 0.1343 USEPATO-16 10/14/0)

Ethylbenzene 0.90 ppb v/v 0.0744 USEPA TO-15 10/14/01 m.p-Xylene 3.06 ppb v/v 0.1705 USEPATO-15 10/14/01 Styrene 0,31 ppb v/v 0.0896 USEPATO-15 10/14/01 1,1,2,2-Tetrachloroethan6 ND ppb v/v 0.1471 USEPATO-15 10/14/01 o-Xylene 1.07 ppb v/v 0.0111 USEPATO-16 10/14/01

1.3,5-Trim9thylbenzene 0,33 ppb v/v 0.0757 USEPATO-15 10/14/01 1,2,4-Trlmethylbenz6n9 0.96 ppb v/v 0.1511 USEPATO-15 10/14/01 1,3-DichiorobenzenG 0.20 ppb v/v 0.1564 USEPATO-15 10/14/01 1,4-Dichlorob6nzene 0.20 ppb v/v 0.169 USEPA TO-15 10/14/01 1,2-Dichlorobenzene ND ppb v/v 0.2014 USEPATO-15 10/14/01 1,2,4-Trlchlorobenzene ND ppb v/v 0.1785 USEPA TO-15 10/14/01 Hexachloro-1,3-Butacilene ND ppb v/v 0.1976 USEPATO-15 10/14/01 Tentatively Identified Ccmpounds 10/14/01 2,3-Dihydrofuran 1.79 ppb v/v USEPA TO-15 10/14/01 Isobutane 1.47 ppb v/v USEPATO-15 10/14/01 Butane 1.85 ppb v/v USEPATO-15 10/14/01 2-Mefhyl butane 3.03 ppb v/v USEPATO-15 10/14/O1 Pentane 1.03 ppb v/v USEPATO-15 10/14/01 2-Methyl Pentane 1.07 ppb v/v USEPATO-15 10/14/01 3-Mettiyl pentane 1.16 ppb v/v USEPATO-15 10/14/01 4-Mettiyl-2-pentanol 0.96 ppb v/v USEPATO-15 10/14/01

John Pedneault Page 2 of 16 ND=RESULT IS EQUAL TO OR LESS THAN MDL Lab Director NYS ELAP #10224 MWBE #46075

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