TEM Asbestos air sample results, NYC BOE, Dec 2001

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: m^C BOE Volume (liters): 1952 Lab Group #: 6091 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: Grid Opening Size: 0.01124

Client Sample #: Area Examined: 0.04496 mm^

GRID BOX: Magnification: £0 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/14/01

Analysis Performed By: MARK PEYSAKHOV

GC. Structure Structure Type Length ID of Structure N or v EDS (Nonadb No C M >=05 u Chrys Amphibole Nonasb Ambig/ND No Coord <5|j Elements) I

Struct = > 0.5p >5:1 Aspect Ratio Srid acceptance:

V= 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 <6% 7= EDS spectnjm conforming to laboratory identification critena observed notes or opaque areas _____ Chrysotile LZ B C i M >5u

' AMPHIBOLES Amphibole I r = Single Fiber Amosite 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous : C = Cluster {>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified I Actinolite NSD = No Structures Delected

CITY_21MC100_003104755

NYC-WTC_000184189