TEM Asbestos air sample results, NYC BOE, Mar 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1824 I.ah Group #: 6933 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 2 GrId Qpenlng Si^ 0.01124

Client Sample #: 05 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/5/02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or’ v EDS (Nonadd No F B I C M ■=5|J Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

I PT%vVgZf

I

Struct > 0 5p > 5; I .Aspect Rutio Grid acceptance

; = Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <f F ( B i C ! M >5m = EDS spectrum conforming to laboratory holes or opaque areas Clirvsotile —'------ ------ i------ '------ identification criteria observed AMPHIBOLES .Amphibole F = Single Fiber Amosite Crocidolite Ambiguous B = Bundle (<3 fibe's <1 fiber diameter apart C = C uster (>3 Intersections! Anthophyllite Noil-Asbestos Tremolite M = Matrix Non-Idenii tied Actinolite NSD = No Structures Detected

CITY_21MC100_003102275

NYC-WTC_000183217