NYC-WTC_000199422

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume 1936 Lab Group #: 8760 Filter Type / Filter Area: MCE 385 mm- l.ah Sample 16 Grid Opening Size: 0,01 124

Client Sample #: 16 Area Examined: 0.04496 mm'

GRID BOX: NXZZ Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 8/25/02

Analysis Performed By: ,/CP ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of structure Nor N EDS (Ncnadb No F E C M >=05 p Chrys Amphibole Nonasb Ambig,''ND No Coord <5p Elements)

IZ$3

___ I

1 ■

Struct = > 0.5n > 5:1 Aspect Ratio Grid acceptance: 9= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratOY identification criteria observed least 20 unfolded or overlapped grid squares <5% f F B C j M I >5p \ = EDS spectrum contcrming tc laboratory holes or opaque areas P Chrysotile 7 identitication critena observed I AMPHIBOLES Amphibole 1 r = Single Fiber Amosite S = Bundle 1<3 fibers <1 fiber diameter apart Crocidolite Anthophyllite Ambiguous ' Non-Asbestos ' 3 C = Cluster (>3 ntersections.l Tremolite M = Mat'ix Non-Idenlified Actinolite NSC = No Structures Delected

CITY_21MC100_003033906

NYC-WTC_000199422