NYC-WTC
0001
AMBIENT GROUP, INC.
10 MORRISAVENUE
GLEN COVE, NY 11542
DUST CHARACTERIZATION LABORATORY DATA REPORT
PROJECT ID: 211379
CLIENT: BOSTON PROPERTIES
LOCATION: 90 CHURCH STREET, 5TH FLOOR
TECHNICIAN: PETER SCHORK
FIELD ID
LABORATORY ID
DESCRIPTION
5-A4
DB2817
LOCATION #4-BULK
•.
DATE COLLECTED: 10/14/01..
DATE RECEIVED: 10/14/01
DATE ANALYZED: 10/14/01
SAMPLE
CONSTITUENTS
CELLULOSE
•FIBER GLASS
GRAVEL ROAD DUST
CARBON PARTICLES
DECAYED ORGANIC MATTER_
TOTAL
PERCENT OF
SAMPLE**
20.0%
30.0%
30:0%:.
10.0%
10.0%
100.0%
•..••.
:.
Signed for Ambient Group Inc. by,
TAREK FATA
ND = None Detected, NA = Not Analyzed, There are two (2) types of dust sample 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 shall 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
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000124963Source: 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.