NYC-WTC_000229071

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet CHent Name: NYC BOE Volume niters): 1800 Lab Group #: 7873 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #; 5 Grid Opening Size: 0.01124 Client Sample #: 07 Area Ejtamincd: 0,04496 mm-

GRID BOX: Magnification: 20,000 GRID ID; Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/25/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length to of Structure N or V EDS (Nonadb No F B c M >=05 p Chrys Amphitwie Nonastj Ambig/NO Elements} No Coord <5p

gg 2.

Struct = > 0.5p >5 :1 Aspect Ratio Grid aaeptarice: 4- Positive diftracticn pattern properties oonforming to <50% undis3<3lw<J filter, owertspped or foMed Totals laboratory identifcation criteria observed <10% particulate swerve >50% coverage ate least unfoMetl or overlapped grid squares <5% F B C M >5;j EDS spectrum conforming to laboratory holes or opaque areas identificatton criteria observed Chrysotile amphiboles Amphibole F = Single Fiber Amoaite 0 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 intersections) Anthophyllite Non-Asbestos Tremolite M = Matria Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002902142

NYC-WTC_000229071