NYC-WTC_000200394

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 180S Lab Group #: 7997 Filter Type / Filter Area: MCE 385 Lab Sample #: 16 Grid Opening Size: 0.01124

Client Sample #: 16 Area Examined: 0.04496

GRID BOX: Magnification: 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/8/02

Analysis Performed By: - MARK PEYSAKHOV

GO. Structure Structure Type Length ID of structure , Nor A EDS No >=05 u :>=5|J (Nonadb F B C M Chrys Amphibole Nonasb Ambig/ND ■ No I Coord <5p Elements)

1

- . -------- ——-------------- i ■; i Struct = >0.5p > 5:1 AspectRatio. : Grid acceptance: T.= Positive diffraction pattern properties contorming 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 >5|J i/.- V= EDS spectrum contorming to laDOratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber ■ ■ Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos M = Matrix Tremolite Actinolite Non-Identified NSD = No Structures Detected

CITy_21MC1OO_O11274866

NYC-WTC_000200409