NYC-WTC_000187271

NYC 9/11 Public Portal Document

10/23/2001 15:03 6314678905 PEDhEAULT ASSOCIATES PAGE 19

r 1 Prepared Exclurively Por: PEDNEAULTASSOCIATES, INC. NYCDEP-Erocrgency Response & Tech Assmt BOX20S. BOHEMM. N.Y 11716

96-05 Horace Harding E-Vpressway LAB#: 01100404 Corona , NY 11368 PROJECT ID WORLD TRADE CENTER- 5 Boro Sampling -> (718) 595-4650 MATRIX: AIR\GAS

I m,p-XylenG 2.34 ppbv/v 0.1785 USEPATO-15 10/22/01 Styrene 0.16 ppbv/v 0.0896 USEPATO-15 10/22/01 1,1,2.2-Tetrachloroethane ND ppb v/v 0.1471 USEPATO-15 10/22/01 o-Xylene 0.66 ppb v/V 0,0111 USEPA TO-15 10/22/01 1,3,5-Tfimethylbenzene 0.36 ppbv/v 0.0757 USEPATO-15 10/22/01 1,2,4-Trimethylbenzene 1.43 ppbv/v 0.1511 USEPATO-15 10/22/01 1 .S-Olchlorobenzene NO ppbv/v 0.1564 USEPATO-15 10/22/01 1,4-Oichlorobenzene ND ppb vA/ 0.169 USEPATO-15 10/22/01 1,2-Dlchlorob8nzene ND ppbv/v 0.2014 USEPA TO-15 10/22/01 1,2,4-Trichloro benzene ND ppbv/v 0.1785 USEPATO-15 10/22/01 Hexachloro-1 .a-Buiadiene ND ppb v/v 0.1976 USEPATO-15 10/22/01 Tentatively Identified Compounds USEPATO-15 10/22/01 Propene 1.36 ppb v/v USEPATO-15 10/22/01 Isobutane 1.70 ppb v/v USEPA TO-1S 10/22/01 4,4-Dlmethyl-2-Oxetanone 1.51 ppb v/v USEPATO-15 10/22/01 Butane 2.74 ppbv/v USEPA TO-15 10/22/01 ; 2-Methyf butane 3.63 ppbv/v USEPATO-15 10/22/01

Pentane 1.50 ppb v/v USEPATO-15 10/22/01 2-Methyl Pentane 1.00 ppbv/v USEPATO-15 10/22/01 Methylcyclopentane 1.05 ppb v/v USEPATO-1S 10/22/01

John Pedneault Page 1O of 16 NI>=RE.SULT IS EQUAL TO OR LESS THAN MDL Lab Director NYS ELAP #10224 MWOE #46075

CITY_21MC100_0 02966275 NYC-WTC_000187280