NYC-WTC_000204704

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet CHentN^e: NYC BOE Volume (liters): 1920 Lab Group #: 7272 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 5 Grid Opening Size: 0.01124

Client Sample #: 05 Area Examined: 0.04496 mm"

GRID BOX: GRID ID: uc Magnification: Accelerating Voltage: 20,000 100 KeV # Grid Openings: 4 Analysis Date: 3/30/02

Analysis Performed By: ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure Nor N EOS (Nonadb i No F B C M >=05 p >=51J Chrys Amphibole Nonasb Ambig/ND No Coord <5P Elements) I 3 £ —J!__

Struct = > 0.5p 5:1 Aspect Ratio Grid acceptance: \ = 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 i M ! >5tJ vC EDS spectrum conforming to laooratory holes or opaque areas loentification criteria observed Chrysotile AMPHIBOLES Amphibole i ! = = Single Fiber Amosite 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite i Non-Identified I NSO = No Structures Detected

CITY_21MC100_003061739

NYC-WTC_000204704