TEM Asbestos air sample results, NYC BOE, Dec 2001

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1936 Lab Group #: 6010 Filter Type / Filter Area: MCE 385 mm- Lab Sample 11 Grid Opening Size: 0.01124

Client Sample #: 1] Area Examined: 0.04496 mn-

GRID BOX: Magnification: 20.000 GRID ID: IS Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/1/01

.Analysis Performed By: MARK PEYSAKHOV

GO. I Structure Structure Type Length ID of Structure N or v EDS I No (Nonadb F B 0 M >=05 U ~ >=5p Ctirys Amphibole L Nonasb Ambig/NC No Coord <5:. Elements)

...

1 I

I I Struct = > 0.5p .> 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved filler, overlapped or folded Totals laboratory identification critena observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F i B C M >5m \ = EDS spectrum contorming to laboratory holes or opaque areas ioentiticafon criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite E = Bundle (<3 fibers <" fiber diameter apart Crocidolite Ambiguous C - Cluster (>3 intersections; Anthophyllite Non-Asbestos Tremolite y = Matra N on-Identified Actinolite N3D = No Structures Delected

CITY_21MC100_003104429

NYC-WTC_000183975