NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1944
Lab Group #: 6621 Filter Type / Filter Area: MCE 385 mm-
Lab Sample #: 19 Grid Opening Size: 0.01124
Client Sample #: 19 Area Examined: 0.04496 mm-
GRID BOX: Magnification: 20,000
GRID ID: 32^ Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 2/10/02
Analysis Performed By:
ROMAN PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or t/ EDS
No (Nonadb
F B C M >=05 H Ctirys Amphibole Nonasb Ambig/ND
Elements)
No Coord <5m
7
Struct = > O Sp >5:1 Aspect Ratio Grid acceptance;
>/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals
laboratory identification critena observed <10% particulate coverage >50% coverage ate
>/= EDS spectrum conforming to laboratory
least 20 unfolded or overlapped grid squares <5% F B C M >5m
holes or opaque areas
identification criteria observed Chi-ysotile
; AMPHIBOLES , Amphibole
F = Single Fiber ; Amosite
B = Bundle (<3 libers <1 fiber diameter apart ; Crocidolite Ambiguous
C = Cluster (>3 Intersections) I Anthophyllite Non-Asbestos
Tremolite
M = Matrix Non-Identified
Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003389047
SUBJECT TO PROTECTIVE ORDER NO, 2, SEPT, 2008
NYC-WTC_000230317
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