NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume niters): 1928
Lab Group #: 5868 Filter Type / Filter Area: MCE 385 mm"
Lab Sample #: 4 Grid Opening Size: 0,01124
Client Sample #: 4 Area Examined: 0.04496 mm"
GRID BOX: Magnification: 20,000
GRID ID: Accelerating Voltage: too KeV
# Grid Openings: 4 Analysis Date: 11/10/01
Analysis Performed By:
MARKPEYSAKHOV
GO Structure Structure Type Length ID of Structure N or EDS
(Nonadb
No F B C M >=5(J Chrys Amphibole Nonasb Ambig/ND
No Coord <5m Elements)
Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance:
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 >5p
0/= EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed Chrysotile
AMPHIBOLES | Amphibole
F ” Single Fiber Amosite j
B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite ; Ambiguous
C = Cluster (>3 Intersections) Anthophyllite 1 Non-Asbestos
Tremolite '
M = Matrix Non-Identified
Actinolite
NSC = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003459092
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000179390
OCR can misread numbers and units. Confirm readings against the page image before using them.