NYC-WTC_000212171

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 7435 Filter Type / FUter Area: MCE 385 mm’ Lab Sample #: 2 Grid Opening Size: 0.01124 Client Sample #: 05 Area Examined: 0.04496 mm’

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV, # Grid Openings: 4 Analysis Date: 4/16/02

Analysis Performed By: MARK PEYSAKHOV

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

J

Struct = > 0.5g .> 5:1 Aspect Ratio Grid acceptance: >/= Positive diffraction pattern properties conforming to <50% undissolved filler, 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 >5p '/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile ' AMPHIBOLES i Amphibole F = Single Fiber Amosite B - Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) I Anthophyllite Non-Asbestos i Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_002866173

NYC-WTC_000212171