NYC-WTC_000229073

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1816 Lab Group 7873 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 10 Grid Opening Size: 0.01124 Client Sample 12 Area Examined: 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 10 of Structure N or V EDS i No (Nonadb | F 6 C M >=05 )j Chrys Amphibole Nwiasb AmbigJND Eiertsents) i No Coord <5p

I 1^6^-------

Struct = > 0,5u > 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern propenes conforming to <50% undissolved fitter, ovariapped or folded Totals laborator/ identification criteria observed <10% particiiate coverage >50% coverage ate laaat 20 unfoidep or overtappad grid squares <5% F B C M >5p ■/= EDS specbum confoming to laboratoiy holes or opaque areas identitication criteria observed Chrysotile AMPHIBOLES Amphibole” F = Single Fiber Amosite e = Sundie (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos TreiPoliEe M = Matrix Actinolite Non-ldentified NSD = bio Siructures Delected

CITY_21MC100_002902147

NYC-WTC_000229073