NYC-WTC_000124933
AMBIENT GROUP, INC.
10 MORRIS AVENUE
GLEN COVE, NY 11542
DUST CHARACTERIZATION LABORATORY DATA REPORT
PROJECT ID: 211379 DATE COLLECTED: 10/14/01
LIENT: BOSTON PROPERTIES DATE RECEIVED: 10/14/01
LOCATION: 90 CHURCH STREET, 9TH FLOOR DATE ANALYZED: 10/14/01
CIAN: PETER SCHORK
SAMPLE PERCENT OF
LABORATORY ID DESCRIPTION _ CONSTITUENTS SAMPLE **
omg Wage “yng
CELLULOSE - YB gag Ste
LOCATION #3-BULK . FIBER GLASS 30.0%
CEMENT DUST 10.0%
GRAVEL ROAD DUST 30.0% pom
CARBON PARTICLES 10.0%
CHRYSOTILE 2.0%
NYC 9/11 Public Portal Document
TOTAL _ 100.0%
Signed for Ambient Group Inc. by,
TAREK FATA
ND = None Detected, NA = Not Analyzed, There are two (2) types of dust ple submitted for analysis: Settled = Samples submitted on tape/bulk, Airborne = Samples submitted
in Air-O-Cell Cassettes. All results disclosed in this report relate only to the items tested. No reproduction of all or any portion of this report shail occur without written approval
of Ambient Group Inc. Unless otherwise directed by the Client, Ambient Group Inc. will retain the samples listed in this report for five (5) days, after which time they may be disposed
of in if licable requlati
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000124933Source: NYC Law Department, mirrored locally
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from NYC Board of Education facilities on February 8, 2002.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from NYC Board of Education facilities on February 8, 2002.