Air sample lab report, Broadway and 31st St, Oct 2001

NYC 9/11 Public Portal Document 10/25/2001 lb:14 6314676905 PEDNEAULT ASSOCIATES PAGE 15

' L Prepared Exdu.iively Por: PEDNEAULTASSOCTATJES, INC. NYCDEP-Emergency Response & Tech Assmt leiSN/m-ffAysmE, BOX20S. N.Y. 11716 96-05 Horace Harding Expressway LAB#: 01100428 Corona , NY 11368 PROJECT ID WORLD TRADE CENTER- 5 Boro Sampling (718)595-4650 MATRIX: AIR\GAS I m.p-Xylene 0.86 ppb v/v 0.1785 USEPATO-15 10/23/01 Styrene ND ppb v/v 0.0896 USEPA TO-15 10/23/01 1,1.2,2-Tetrachloroetnane ND ppb v/v 0.1471 USEPATO-15 10/23/01 o-Xylene 0.30 ppb v/v 0.0111 USEPA TO-15 10/23/01 1 .S.S-Trimethylbenzene 0.10 ppb v/v 0.0757 USEPATO-15 10/23/01 1,2,4-Trlmethylbenzene 0.28 ppb v/v 0.1511 USEPATO-15 10/23/01 1,3-Dichlorobenzene ND ppb v/v 0.1564 USEPATO-15 10/23/01 1 A-Dichlorobenzena ND ppb v/v 0.169 USEPATO-15 10/23/01 1.2-Dichlorobenzene ND ppb v/v 0.2014 USEPA TO-15 10/23/01 1.2,4-Trichlorobenzene ND ppb V/v 0.1785 USEPATO-15 lC/23/01 Hax0chloro-1,3-Butadiene ND ppb v/v 0.1976 USEPATO-15 IC/23/01 Tentatively Identified Compounds USEPATO-15 10/23/01 Isobutane 0.99 ppb v/v USEPATO-15 10/23/01 2-Methyl butane 1.32 ppb v/v USEPATO-15 10/23/01

John Pedneault Page 14 of 16 ND=RESULT IS EQUAL TO OR LESS THAN MDL Lab Director NYS ELAP #10224 NR=NON REPORTABLE RESULTS MWBE #46075

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