NYC-WTC_000187239

NYC 9/11 Public Portal Document

10/16/2001 14:48 6314676305 pedneault associates

Prepared Exclusively Ear: PEDNEAULTASSOCIATES, INC. NYCDEP-Einergency Response Sc Tech Assmt. 161} m/m/AVENUE. BOX20S. BOHEMIA. N.Y. U7f6

96-05 Horace Harding Expressway LAB#: 01100281 Corona NY 11368 PROJECT ID WORLD TRADE CENTER- 5 Boro Sampling (718) 595-4650 MATRIX; A(R\GAS I 1,1,2-Trichloroethane ND ppb v/v 0.0896 USEPATO-15 10/15/01 Toluene 1.81 ppb v/v 0.0735 USEPATO-15 10/15/01 1,2-Dibrotnoethan6 NO ppb v/v 0.0971 USEPATO-15 10/15/01 Tetrachloroethone 0.13 ppb v/v 0.0845 USEPATO-15 10/15/01 Chlorobenzene ND ppb v/v 0.1343 USEPATO-15 10/15/01 Ethylbenzene 0.36 ppb v/v 0.0744 USEPATO-15 10/15/01 rojj-Xylene 1.04 ppb v/v 0.1786 USEPATO-15 10/15/01 Styrene 0.09 ppb v/v 0.0896 USEPA TO-15 10/15/01 1,1,2,2-Tetrachloroethane ND ppb v/v 0.1471 USEPATO-15 10/15/01 o-Xylene 0.40 ppb v/v 0.0111 USEPA TO-15 10/15/01 1,3.5-Trimethylbenzen0 0.16 ppb v/v 0.0757 USEPATO-15 10/15/01 1,2,4-Trirnethylbenzene 0.45 ppb v/v 0.1511 USEPATO-15 10/15/01 1,3-Dictilorobenzene ND ppb v/v 0.1564 USEPATO-15 10/15/01 1,4-Dlchlorobenzene ND ppb v/v 0.169 USEPATO-15 10/15/01 1,2-Dichlorobenzene ND ppb v/v 0.2014 USEPATO-15 10/15/01 1.2.4-Tnchlorcbenzene NO ppb v/v 0.1765 USEPATO-15 10/15/01 Hexactiloro-1.3-Butadiene ND ppb v/v 0.1976 USEPATO-15 10/15/01 Tentatively Identified Compounds 10/15/01 2-Methyl butane 1.09 ppb v/v USEPATO-15 10/15/01

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

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NYC-WTC_000187240