NYC-WTC_000201643

NYC 9/11 Public Portal Document

TEMAsb esto s (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 7558 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 13 Grid Opening Size: 0.01124 Client Sample #: 13 Area Examined: 0.04496 mir? Magnification: GRID BOX: L22± 20,000 GRID ID: 3^ Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/2S/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or EDS . (Nonada No F B C M >=05 |J T i ■=5iJ Chrys Amphibole Nonasb Ambig/ND 'No Coord <5u Elements)

ZW --------------

i

Struct = > Q.5u .> 5:1 Aspect Ratio Grid acceptarce: ^=.Positive diffraction pattern properties conforiming to ,<50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate ' least 20 unfaided or overlapped grid squares <5% F B C M >5u •/= EDS spectrum conforming tc laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole ? - Single Fiber Amesite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster {>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_011275750

NYC-WTC_000201655