NYC-WTC_000227998

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; NYC BOE Volume (liters): 1856 Lab Group #: 6899* Filter Type / Filter Area: MCE 385 mnY Lab Sample #; 2 Grid Opening Size: 0.01124 Client Sample#; 02 Area Examined: 0.04496

GRID BGX; Magnification: 20,000 GRID n>: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/3/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Norv EOS Ng {Nonadb F B C M «05m Chrys Amphibole Norasb Ambig/ND NoI -Coord <5m Elements) 1 r 7

Struct = > 0.5g > 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% particutale coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F Bic M ^5iJ i/s EDS spectrum oonforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_006617417

NYC-WTC_000227998