NYC-WTC_000194500

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1936 Lab Group #: 7787 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 10 Grid Opening Size: 0.01124 Client Sample #: 10 Area Examined; 0.04496 mm’ GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage; 100 KeV # Grid Openings: 4 Analysis Date; 5/18/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of structure N or V EDS No (Nonadb F B C M >=05 p >=5|j Chrys Amphibole Nonasb Atnbig/ND No Coord <5p Elements)

- <1

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to "50% undissolved filter, overiapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

'/= EDS spectrum conforming to laboratory least 20 unfolded or overiapped grid squares <5% F B c M >5m holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-ldentified Acbnolite NSD = No Structures Detected

CITY_21MC100_004151544

NYC-WTC_000194500