NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1840
Lab Group #; 7987 Filter Type/FUter Area: MCE 385 mm»
Lab Sample #: 12 Grid Opening Size: 0.01124
Client Sample #: 15 Area Examined: 0.04496 mm’
GRID BOX: Magnification: 20,000
GRID ID; Accelerating Voltage: 100 KeV
U Grid Openings: 4 Analysis Date: 6/6/02
Analysis Performed By;
MARK PEYSAKHOV
GO. Structure Structure Type Length ID of Structure N or V EDS
No (Nonadb
F B C M >05 p >=5p Chrys Amphibole Nonaeb AmbigW
; No Coord <5p Elemenis)
Z
Struct = > aSa > J: 1 Aspect Ratio Grid aceeptancs:
Va Positive diffraction pattern properties conforming to <50% undissolved filler, overlapped or folded
Totals
laboratoty idenfificaton criteria observed <t0% particulale coverage >50% coverage ate
least 20 unfolded or ovenapped grid squares <5% F B C M ’5P
Vs EOS spectrum cortforming to laboratory holes or opaque areas
identifieation criteria observed Chrysotile
AMPHIBOLES Amphibole
F = Single Fiber Amosite
B = Bundle (<3 libers <1 fiber diameter apart Crocadolite Ambiguous
C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos
Tremolite
M = Matrix Actinolite ■ Non-Identified
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003456514
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000178983
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