NYC-WTC_000219491

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE V plume (liters): i>;?4 Lab Group 0885 Filter Type / Filter .Area: MCE 36? mm-

Lab Sample #: 5 Grid Opening Size: 0.01 124

Client Sample #: 13 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 2(J,0()u GRID ID: ■Accelerating Voltage: 100 KeV Grid Openings: 4 Analysis Date: 3 2. 02

Anaiysis Performed By: MARK PEYSAKHOV

GO Structure Structure Type Length ID of Structure \ or . i EDS No F B C M >=05 p >=5|J Chrys i Amphibole Nonasc 1 Ambtg/ND i ■"“'haui. No Coord <5p I ! Elements) —------- 1----------- - —

Struct = > 0.5p > 5:1 Aspect Ratio GrW acceptance: '/= Positive diffraction pattern properties conforming to <50% undissolved filter, overiapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ale least 20 unfolded or overlapped grid squares <5% ! F 1 B ‘ C ■ M V = EDS spectrum conforming to laboratory holes or opaque areas Identification cnlena observed Chrysotile i .AMPHIBOLES .Amphibole F = Single Fiber Amosite Crocidolite ■Ambiguous ; B = Bundle (<3 fibers <1 fiber diameter apart Anthophyllite Non-Asbestos i i---- i C = Cluster (>3 intersections! T remolite ■-------- 1 M = Matrix Actinolite Non-ldentified NSO = No Structures Detected

CITY_21MC100_002881181

NYC-WTC_000219491