'C-WTC
000126681
AMBIENT GROUP, INC.
10 MORRIS AVENUE
GLEN COVE, NY 11542
DUST CHARACTERIZATION LABORATORY DATA REPORT
PROJECT ID: 211334
CLENT: ZAR REALTY
LOCATION: 100 CHURCH STREET
TECHNICIAN: JOSEPH CIANCI
FIELD ID
LABORATORY ID
211334-9-3
DB2242
DESCRIPTION
9TH FLOOR: SETTLED DUST
211334-9-4
DB2243
9TH FLOOR: SETTLED DUST
DATE COLLECTED: 9/22/01
DATE RECEIVED: 9/22/01
DATE ANALYZED: 9/24/01
SAMPLE
CONSTITUENTS
CELLULOSE
FIBER GLASS
CEMENT DUST
CARBON PARTICLES
TOTAL
CELLULOSE
FIBER GLASS
CEMENT DUST
CARBON PARTICLES
TOTAL
PERCENT OF
SAMPLE ••
10.0%
50.0%
20.0%
20.0%
100.0%
10.0%
40.0%
30.0%
20.0%
100.0%
Signed for Ambient Group Inc. by,
Fatt
TAREK FATA
ND = None Detected, NA = Not Analyzed, There are two (21 types of dust sample submitted for anaiyais: Settied Semoles submitted on taoe/bulk, Airborne • Samoles submitted
in Air-O-Cell Cassettes. All results disclosed in this report relate anly to the itemns tested. No reproduction of all or any portion of this report shall oocur without wiftten approval
of Ambient Group Inc. Unless otherwise directed by the Clent, Ambient Group Ine. will retain the samples listed in this report for five 15l days, after which time they may be dlsposed
NYC 9/11 Public Portal Document
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000126681Source: NYC Law Department, mirrored locally
Laboratory report characterizing settled dust composition at 75 Park Place collected on November 8, 2001, identifying constituents like cellulose and cement dust.
Laboratory report documenting transmission electron microscopy analysis of air samples collected from NYC Board of Education facilities on April 28, 2002.