NYC-WTC_000231770

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: 12/27/2004 New York, NY 10006 Date Analyzed: 01/03/2005 Collected By: John Boadi Job Location: 130 Liberty Street Collected: 12/25/2004 22:00 Rotometer: Standard o o z m Lab ID Asbestos Analytical Asbestos Asbestos O m z Start/ Volume Asbestos Structures Non­ Sensitivity Concentration Concentration Field ID Sample Location Stop Flow (liters) Type(s) >. 5gm i Sgin Asbestos (AS/cc)” (AS/cc) (AS/nmi2) co <Sfiin c CD m 0013615-001 Washington Street/ 22:00 4 1940 None Detected 0 0 0 0.0008 <0.0008 <3.98 O Albany Street 6:05 o 27687-7 □3 O -I 0013615-002 Albany Street/ 22:02 4 1948 None Detected 0 0 0 0.0008 <0.0008 <3.98 m 6:09 O Greenwich Street

m 27687-8 O □3 o 0013615-003 Greenwich Street 22:03 4 1956 None Detected 0 0 0 0.0008 <0.0008 <3.98 m 6:12 □3 z p 27687-9 0013615-004 Liberty Street 22:08 4 1956 None Detected 0 0 0 0.0008 <0.0008 <3.98 O I bO 6:17 27687-10 7" o m 0013615-005 Washington Street/ 22:12 4 1964 None Detected 0 0 0 0.0008 <0.0008 <3.98 Cedar Street 6:23

'i DO 27687-11 Average Filter Loading: <3.98

> z z > 5c CO SIGNED FOR AMBIENT GROUP, INC. BY: Page 3 of 3 Disclaimers; The laboratory is not responsible for fibers counted in fibcrs/cc which is dependent on volume collected by non-laboratory personnel. DO 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 NVLAP or any agency of the U.S. Government. 'o This report relates only to the samples hsted above. 8o o o

NYC-WTC_000231772