NYC-WTC_000215019

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7030 Filter Type / Filter Area: MCE 385 mm^ T Lab Sample #: 3 Grid Opening Size: 0.01124 Client Sample #: 03 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/11/02

Analysis Performed By: ROMAN PEYSAKHOV

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

? p-Z ^1

Struct = > 0.5,u >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% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% 1 F B C M i >5p v'= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile A.MPHIBOLES 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_000464244 NYC-WTC_000215022