NYC-WTC_000231970

NYC 9/11 Public Portal Document

AMBIENT GROUP, INC. 10 Morris Avenue, Glen Cove, NY 11542 Phone: (516) 671-2370 - Fax: (516) 609-8271 NY ELAP ID#10865

Airborne Asbestos Fiber Analysis by Transmission Electron Microscopy

Client: Lower Manhattan Development Corp. Job Number: 2043 Address: One Liberty Plaza, 20th Floor Date Received: 12/13/2004 New York, NY 10006 Date Analyzed: 12/16/2004 Collected By: Rotimi Adeola Job Location: 130 Liberty Street Collected: 12/11/2004 6:07 Rotometer: Standard

Lab ID Asbestos Analytical Asbestos Asbestos Start/ Volume Asbestos Structures Non- Sensitivity Concentration Concentration Field ID Sample Location Stop Flow (liters) Type(s) >, 5gm > Spin Asbestos (AS/cc) (AS/cc) (AS/mni2) <5gin 0013420-001 Washington Street/ 6:07 4.25 2052.75 None Detected 0 0 0 0.0008 <0.0008 <4.19 Albany Street 14:10 27603-7 0013420-002 Albany Street/ 6:12 4.25 2040 None Detected 0 0 0 0.0008 <0.0008 <4.19 Greenwich Street 14:12 27603-8 o 0013420-003 Greenwich Street 6:20 4 1896 None Detected 0 0 0 0.0008 <0.0008 <3.79 14:14 1^ 27603-9 o 6:25 4 0 0 0 0.0008 <0.0008 m 0013420-004 Liberty Street 1896 None Detected <3.79 14:19 27603-10 o 0013420-005 Washington Street/ 6:32 4 1884 None Detected 0 0 0 0.0008 <0.0008 <3.79 20 DO Cedar Street 14:23 27603-11 'o > z

s c DO SIGNED FOR AMBIENT GROUP, INC. BY: Page 1 of 3 l"” o Disclaimers: The laboratory is not responsible for fibers counted in fibers/cc which is dependent on volume collected by non-laboratory personnel. o This report may not be duplicated in part without written permission by Ambient Group, Inc. this report must not be used to claim product endorsement by NVLAPor any agency of the U.S. Government. o This report relates only to the samples listed above. o tn o o CD

NYC-WTC_000231970