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

NYC 9/11 Public Portal Document PEDNEAULT ASSOCIATES PAGE 05 10/22/2001 17:08 6314676905

r 1 Prepared Exclusively For: PEJDNEAUITASSOCIATES, INC. NYCDEP-Eraergencj' Response & Tech Assmt, ISIS NINTH AVENUE. BOXiOS. BOHEMIA. NY. II716 96-05 Horace Harding Expressway LAB#; 01100399 Corona , NY 11368 PROJECT ID WORLD TRADE CENTER- 5 Boro Sampling (718) 595-4650 MATRIX: AIR\GAS I __ m,p-Xylene 1.87 ppb v/v 0.1785 USEPA TO-15 10/21/01 Styreno 0,14 ppb v/v 0.0896 USEPA TO-15 laii/oi 1.1,2,2-Tetrachloroettiane ND ppb v/v 0.1471 USEPA TO-15 10,21/01 o-Xylene 0.67 ppb v/v 0.0111 USEPA TO-15 10/21/01 1.3,5-TrimethyIbenzene 0.24 ppb v/v 0.0757 USEPA TO-15 10/21/01 1,2,4-Trimethylbenzen e 0.91 ppb v/v 0.1511 USEPA TO-15 10/21/01 1,3-Dichlorobenzene ND ppb v/v 0.1564 USEPA TO-15 10/21/01 1,4-Dichlorobenzene ND ppb v/v 0,169 USEPA TO-15 10/21/01 1,2-Dichlorobenzene ND ppb v/v 0,2014 USEPA TO-15 10/21/01 1,2,4-Trichlorobenzen6 ND ppb v/v 0.1765 . USEPA TO-15 10/21/01 Hexachloro-1.3-Butadlene ND ppb v/v 0.1976 USEPA TO-15 10/21/01 Tentatively Identified Compounds 10/21/01 Propene 0,99 ppb viv USEPA TO-15 10/21/01 Isobutane 0,92 ppb v/v USEPA TO-15 10/21/01 2-Metliyl butane 1,64 ppb v/v USEPA TO-15 10/21/01

John Pedneault Page 4 of 16 NP=RESULT IS EQUAL TO OR LESS THAN MDL Lab Director NYS ELAP #10224 MWBE #46075

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