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

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Laboratory analysis of air samples collected at Broadway Avenue and 31st Street in Queens on October 19, 2001.

NYC-WTC_000182412–000182427
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NYC 9/11 Public Portal Document PEDNEAULT ASSOCIATES PAGE 13 10/22/2001 17:08 8314676905

□ Prepared Exclusively For: PEDNEAULTASSOCIATES, INC NYCDEP-Emergency Response & Tech Assmt. DOX:05. EOFfEXUA. IIV6 96-05 Horace Harding Expressway LAB#: 01100399 Corona , NY 11368 PROJECT ID WORLD TRADE CENTER- 5 Boro Sampling (718)595-4650 MATRIX: AIR\GAS

A—= 1 m.p-Xylene 0.65 ppb v/v 0.1785 USEPATO-15 10/21/01 Styrene ND ppb v/v 0.0896 USEPATO-15 10/21/01 1,1.2,2-Tetrachloroethane ND ppb v/y 0.1471 USEPATO-15 10/21/01 o-Xylene 0.24 ppb '/N 0.0111 USEPATO-15 10/21/01 1,3.5-Trimelhylbenzene 0.08 ppb v/v 0.0757 USEPATO-15 10/21/01 1.2,4"Trimethylb6nzene 0.28 ppb v/v 0.1511 USEPATO-15 10/21/01 1,3-Dichlorobenzene ND ppb v/v 0.1564 USEPATO-15 10^1/01 1,4-Dichlorobenzene ND ppb v/v 0.169 USEPATO-15 10.21/01 1.2-Dichlorobenzene ND ppb v/v 0.2014 USEPATO-15 10,21/01 1,2,4-T richlorobenzene ND ppb v/v 0.1785 USEPATO-15 10/21/01 Hexachioro-1,3-Butadiene ND ppb v/v 0.1976 USEPATO-15 10/21/01 Tentatively Identified (Compounds 10/21/01 2-Methyl butane 1.88 ppb v/v USEPATO-15 10/21/01 Acetone 0.97 ppb v/v USEPA TO-15 10/21/01 Isopropyl alcohol 11.8 ppb v/v USEPATO-15 10/21/01

John Pedneault Pege 12 of 16 N1>=RESULT IS EQUAL TO OR LESS THAN MDL Lab Director NYS ELAP #10224 MW0E #46075

CITY_21MC100_011107341

NYC-WTC_000182423

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NYC-WTC_000182423Source: NYC Law Department, mirrored locally

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