NYC-WTC_000187239

NYC 9/11 Public Portal Document iO/ib/2001 14:48 6314S7E905 PEDNEAULT ASSOCIATES PAGE 05

Prepared Eirlusively For: PEDNBAULTASSOCIATES, INC. NYCDEP-Emergcncy Response & Tech Assmt. le/SN/ffTHAVEHUe. BOX2ns, BOHEMIA. Hr. II2I6 96-05 Horace Harding Expressway LAB#: 01100281 Corona NY 11368 PROJECT ID WORLD TRADE CENTER- 5 Boro Sampling (718)595-4650 MATRIX; AIRtGAS

m,p-Xylene 0.83 ' ppb v/v 0.1785 USEPA T0-t5 10/15/01 Styrene ND ppb v/v 0.0B96 USEPATO-15 10/15/01 1 ,t ,2,2-Tetrachloro ethane ND ppb v/v 0.1471 USEPATO-15 10/15/01 o-Xylene 0.32 ppb v/v 0.0111 USEPATO-15 10/15/01 1,3,5-Trimethylbenzene 0.13 ppb v/v 0,0757 USEPATO-15 10/15/01 1,2,4-Tn'methylbenzena 0.40 ppb v/v 0,1511 USEPA TO-15 10/15/01 1,3-Dichlorobenzane ND ppb v/v 0.1564 USEPA TO-15 10/15/01 1.4-Dichlorobonzene ND ppb v/v 0.169 USEPATO-15 10/15/01 1,2-Dichloroben2ene ND ppb v/v 0.2014 USEPA TO-15 10/15/01 1,2,4-Trtchloroben2ene ND ppb v/v 0.1785 USEPATO-15 10/15/01 Haxachloro-1.3-Butadiene ND ppb 0,1976 USEPATO-15 10/15/01 Tentatively Identified Compounds 10/15/01 2-Metfiyl butane 0.97 ppb v/v USEPATO-15 10/15/01

John Pcdneault Page 4 of 16 ND=RESULT is equal to or LESS THAN MPL Lab Director NYS ELAP #10224 MWfiE #46075

CITY_21MC100_0 02966089

NYC-WTC_000187242