NYC-WTC_000229177

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume filters): 1800 Lab Group #: 7953 Filter Type / Filter Area: MCE 385 Lab Sample #: 13 Grid Opening Size: 0.0 H 24 Client Sample #: 15 Area Examined: 0.04496 mm^

GRID BOX: Magnification; 20,000 GRIP ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/4/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or *7 EDS No [Nonadb F 8 C M »=05p Chfys Amphiboie Nonasi Ambig^lD Elements)

-4^ V I

Struct •= > 0.5(1 > 5:1 Aspect Ratio Grid acceptance: Positive ■^fraiSior pattern propertias conforming te <50% undissolved fliter, overiapped or folded Totals laboratory identification crteria observed <10% paiUcutate coverage >50% coverage ate least 2D unfoUed or overlapped grid squares <5% F Q C M >5p 'i- EDS spednjm contoiminj to laboratory hotea or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart C.'ocidelite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSO = No Structures Detected

CITY_21MC100_002902364

NYC-WTC_000229177