NYC-WTC_000192656

NYC 9/11 Public Portal Document

TEM Asbes10s fair) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 7588 Filter Type / Filter Area; MCE 385 mm^ Lab Sample#: 20 Grid Opening Size: 0.01124 Client Sample #: 20 Area Examined: 0.04496 GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 4/30/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Nor\ EDS No (Nonadb F B C M >=05 M Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

3

Struct = > 0.5 p .>5:1 Aspect Ratio Grid acceptance: V= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5|j >/= EDS spectrum conforming to laboratory 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) i Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003093008

NYC-WTC_000192656