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

NYC 9/11 Public Portal Document

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American Stock Exchange, 28 Septsnber 2001

86 Trinity Place Lead in Air Results Location Air Volume Liters Results E,rg/& Post 2 Sec A Main Trading 1,200 < 5.0 Floor Post 8 Sec G Main Trading 1,200 < 5.0 Floor 15* floor north side 1,200 39; 120' floor central 1,200 445 10'^ floor central 1,200 <5.0 76i 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 xcg/m3 Red room post 21 MF8 1,200 < 5.0 10' floor north side 2,450 <5.0

9' floor central 1,580 9.0

76' floor central 2,020 11.0

Except for the 150i floor and the 12* floor these values are all less than the OSHA lead PEL of 50 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 Hoar. The 15°i floor and 1? floor were re- sampled on September 29*, 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 distributicn 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 i-1 the tables below.

86 Trinity Place Respirable Dust in Air Results Location Air Volume Results 1-5m 6-10km >10rrn Liters U*rn. Post 2 Sze r Main Trading 600 < 5.0 <1% <0'/c <0% Floor

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