TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1832
Lab Group #: 6416 Filter Type / Filter Area: MCE 385 mm-
Lab Sample #: 6 Grid Opening Size: 0.01124
Client Sample #: 06 Area Examined: 0.04496 mrr-
GRID BOX: 7^'3 Magnification: 20,000
GRID ID : c Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 1/24/02
Analysis Performed By:
ROMAN PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or 'Z EDS
No F B C M >=05 p >=5|j Chrys Amphibole Nonasb WNb'
No Coord <5p Elements)
T Kg
1
3B
Struct = > 0.5n -> 5:1 Aspect Ratio Grid acceptance;
Posidve ddfraction pattern properties conforming to Totals
laboratory identification criteria observed
least 20 unfolded or overlapped grid squares <5% F B C M >5u
"/= EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed Chrysotile
AMPHIBOLES Amphibole
F = Single Fiber Amosite
B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos
Tremolite
M = Matrix Actinolite Non-ldentified
NSD = No Structures Detected L
CONFIDENTIAL, CITY_21MC100_0 03433540
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000175820
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000175820Source: NYC Law Department, mirrored locally
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on January 27, 2002.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on January 27, 2002.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a NYC Board of Education site on January 27, 2002.