Lead in air test results, 86 Trinity Place, Sept 2001

NYC 9/11 Public Portal Document

09/28/2@?'1 161:14 63158@3195 ENVtRUSGIEt'OCMBLTAN PAGE @.

American Stock Exchange, 28 Septsmber 2001

86 Trinity Place Lead in Air Results Location Air Volume Liters Results µglrns Post 2 Sec A Main Trading 1,200 < 5.0 Floor Post 8 See G Main Trading 1,200 < 5.0 Floor 15" floor north side 1,200 397 12" floor central 1,200 445 10`' floor central 1,200 < 5.0 7e floor central 1,200 < 5.0 Harry's Trading floor 1,200 < 5.0

22 Thames Street Lead in Air Results Location Air Volume Liters Results Mg/m' Red room post 21 MF8 1,200 <5,0 10'b floor north side 2,450 <5.0 9' floor central 1,580 9.0 7"' floor central 2,020 11.0

Except for the 15th floor and the 12e floor these values are all less than the OSHA lead PEL of 50 gim'. Before and during the time of air sampling the fire escape doors to these floors were left open all day and all night to cool the floor. It is believed that the lead in these samples blew in through the open fire escape doors and deposited on the filter media of the samples. We believe that the lead levels in these spaces were temporary and that they settled to the floor. The 15'h floor and 12°1 floor were re- sampled on September 29s`, 2001, to more fully characterize the lead in air values.

The respirable dust (breathable) in air samples were collected from areas considered representative of the building. Respirable dust samples were collected to show particle dust mass and the discibuticn of particle size. Only one sample was collected from each area to speed up the building screening process. The respirable dust in air results are presented in the tables below.

86 Trinity Place Respirable Dust in Air Results Location Air Volume Results 1-5m 6-100tr. >10t:rn Liters vgint' Jost 2 Sec G Main Trading 600 <.5.0 <1%, <0'/c <0% Floor

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