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

NYC 9/11 Public Portal Document 10/25/2001 16:14 6314676305 PEDNEAULT ASSOCIATES PAGE 07

] Prepared ExclusMy For: PEDNEAULTASSOCIATES, INC. NYCDEP-Emergency Response & Tech Assmt. 1615 HWrMArSUUE. BOX205, BOHEMIA, N.Y. 11716 96-05 Horace iilarding Expressway LAB#: 01100428 Corona , NY 11368 PROJECT CD WORLD TRADE CENTER- 5 Boro Sampling (718)595-4650 MATRIX; AIR\GAS

m.p-Xylone 0,98 ppb v/v 0.1785 USEPA TO-15 10/23/01 Styrene ND ppb v/v 0.0896 USEPA TO-15 10/23/01 1,1,2,2-Tetrachloroethane ND ppb v/v 0.1471 USEPA TO-15 10/23/01 0-Xylene 0.36 ppb v/v 0.0111 USEPA TO-15 10/23/01 1,3,5-Trimethylben2ene 0.13 ppb v/v 0.0757 USEPA TO-15 10/23/01 1,2,4-Trimethylbenzen0 0.43 ppb v/v 0,1511 USEPA TO-1S 10/23/01 1,3-Dichloroben20ne ND ppb v/v 0.1564 USEPA TO-15 10/23/01 1,4-Dichlorobenzene 0.22 ppb v/v 0.169 USEPA TO-15 10/23/01 1,2-Dlchlorobenzene ND ppb v/v 0,2014 USEPA TO-15 10 23/01 1,2,4-T richlorobenzene ND ppb v/v 0.1785 USEPA TO-15 IO.'23/OI Hexachloro-1,3-Butadlene ND ppb v/v 0.1976 USEPA TO-15 10,23/01 Tentatively Identified Compounds USEPA TO-15 10/23/01 3-Furanmethanol 1.82 ppb v/v USEPA TO-15 10,23/01 Isobutane 1.85 ppb v/v USEPA TO-15 10/23/01 2-Metbyl butane 2.42 ppb v/v USEPA TO-15 10/23/01 2-Methyl-i-propene 1.05 ppb v/v USEPA TO-15 10/23/01

John Pedneault ND=RESULT IS EQUAL TO OR LESS THAN MDL Page 6 of 16 Lab Director NYS ELAP #10224 NR=NON REPORTABLE RESULTS MWBE #46075

CITY_21MC100_011107386

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