NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1928
Lab Group #: 7233 Filter Type / Filter Area: MCE 385 mm’
Lab Sample #: 3 Grid Opening Size: 0.01124
Client Sample #: 3 Area Examined: 0.04496 mm^
GRID BOX: Magnification: 20,000
GRID ID: Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 3/27/02
Analysis Performed By:
ROMAN PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or y EDS
(Nonadb
No F B C M 1 >=05 p >=5p Chrys Amphibole Nonasb Ambig/ND
! <5u Elements)
T
Ei
^(7
■ I
Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance:
y = Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals
laboratory identification criteria observed <10% particulate coverage >50% coverage ate
least 20 unfolded or overlapped grid squares <5% F B C M >5|j
y = EDS spectrum conforming to laboratory holes or opaque areas
Identification criteria observed Chrysotile
, AMPHIBOLES ' Amphibole
F = Single Fiber Amosite ■
8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite ‘ Ambiguous
C = Cluster (>3 Intersections) I Anthophyllite : Non-Asbestos
Tremolite
M = Matrix Non-ldentified
Actinolite
NSD = No Structures Delected
CONFIDENTIAL, CITY_21MC100_003467129
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000180528
OCR can misread numbers and units. Confirm readings against the page image before using them.