NYC-WTC_000230079

NYC 9/11 Public Portal Document

TEM Asbestos (airl Count Sheet Client Name: NYC BOE Volume /liters): 1920 Lab Group #: 7204 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 2 Grid Opening Size: 0.01124 Client Sample #: 2 Area Examined: 0.04496 mm- GRID BOX: ; Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 3/25/02

Analysis Performed By: ROMAN PEYSAKHOV

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

Struct = > 0.5p .> 5:1 Aspect Ratio Grid acceptance; 7= 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 >5p 7= EDS spectrum conforming to laborato^ 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 M = Matrix Tremolite Actinolite Non-Identified NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC100_003388715 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230079