110 WILLIAM STREET Block: 77 Lot: 8 BIN: 1001186 69-81 John Street

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September 19, 2001

Mr. Gregory M. McGee TrizecNtshn Office Properties 110William Strect Ncw York, New York 10038

Re: 110 Willidrn Street Ambient Project # 211382

Door, Mr. McGee:

The following is a stumua,<y of tll= indoor environmental quality survey that Ambient Group, Inc. performed on September 17, 2001 at the above referenced location. The survey included 2eunp1h u, fur absence/presence of asbestos in settled dust.

Six (b) scaled dust samples were collected from various locations on floors 4, 11, 20 and 21 and analyzed for the absence/presence of asbestos. Al I six (6) settled dust samples collected tested nc8,ative for the presence of asbestos. Other constituents found In these settled dust samples are common io oflicc spaces of New York City conrincrci;.I buildings and should not pose any adverse health concerns to the building occupants.

Shuutild you have any questions regarding this information, please feel free to call me. Sincerely, Signed for Ambient t^Gro tp net by: ' , ,1A rP

John X1citner, Vice president

11I . r -t• n', 714 1 .-' i

NYC-WTC 000131043