NYC-WTC_000213910

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1832 Lab Group #: 8074 Filter Type / Filter Area; MCE 385 mm^ Lab Sample #: 3 Grid Opening Size: 0.01124 Client Sample #: 05 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/12/02

Analysis Performed By: ROMAN PEYSAKHOV

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

7

Struct = > 0.5p _> 5:1 Aspect Ratio Grid acceptance: 'i= Positive diffraction pattern properties confonning to <50% undissotved filter, overtapped 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 confonning to laboratory holes or opaque areas identificabon criteria observed Chrysotile \ AMPHIBOLY 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-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_002869777

NYC-WTC_000213910