NYC-WTC_000200830

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet ClientNam^ NYC BOE Volume (liters): 1952 Lab Group #: ■7685 ■ Filter Type / Filter Area: MCE 385 mm- Lab Sample #: ■ 3 Grid Opening Size: 0.01124

Client Sample #: 07 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRIDW: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/9/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 7 EDS No ■ (Nonadb F B C M >=05 iJ Chrys Amohibole Nonasb Ambig/ND No Coord <5p , Elements)

A?- AC?

Struct = > 0.5p > 51! Aspect Ratio Grid acceptance: vi= Positive diffraction pattern properties conforming to <50%.Lndissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolced or overlapped grid squares <5% F B C M I >5p >J= EQS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile amphiboly Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous ’ C = Cluster (>3 Intersections) ■ Anthophyllite b'on-Asbestos Tremolite M = Matrix Nou-Identified Actinolite NSD = No Structures Detected

CITY_21MC1OO_O11275182

NYC-WTC_000200834