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

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

r 3 Trepcrtii Exclusively For: PEDNBAULT ASSOCIATES, IJVC. NYCDEP-Emcrgency Respor se & Tech Assrnt. I61S NINTH AVENUE, BOS205. BOHEMIA. NT. 117I( 96-05 Horace Harding .Expressway LAB#; 01100399 Corona , NY 11368 PROJECT ID WORLD TRADE CENTER- 5 Boro Sampling (718) 595-4650 MATRIX: AIR\GAS

m.p-Xylene 1.33 ppb v/v 0,1785 USEPA TO-15 10/21/01 Styrene 0.09 ppb v/v 0.0896 USEPA TO-15 10/21/01 1,1,2.2-Tetrachloroet?ane ND ppb v/v 0.1471 USEPA TO-15 10/21/01 0-Xylene 0,48 ppb v/v 0.0111 USEPA TO-15 10/21/01 1.3.5-Trimethylbenz0ne 0.13 ppb v/v 0.07S7 USEPA TO-15 lC/21/01 1,2,4-Trlmetbylbenzene 0,56 ppb v/v 0,1511 USEPA TO-15 10/21/01 1,3-Dlchlorobenzene ND ppb v/v 0.1564 USEPA TO-15 10/21/01 1,4-DichlorobenzBne 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-Trlchlorobanzere ND ppb v/v 0.1785 USEPA TO-15 10/21/01 Hexachloro-1,3-Butadiene ND ppb vA 0.1976 USEPA TO-15 1071/01 Tentatively Identified Compounds 10/21/01 Isobutane 1.28 ppb v/v USEPA TO-15 1071/01 Butane 1.40 ppb v/v USEPA TO-15 10/21/01 2-Methyl butane 2.05 ppb v/v USEPA TO-15 10/21/01 Pentane 0.91 ppb v/v USEPA TO-15 10/21/01

John Pedneault Page 10 of 16 NI>=RESULT IS EQUAL TO OR LESS THAN MDL Lab Director NYS ELAP #10224 MWBE #46075

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