NYC-WTC_000220974

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7558 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 5 Grid Opening Size: 0,01124 Client Sample 05 Area Examined: 0.04496 mm^ Magnification: GRID BOX: 2225 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/28/02

Analysis Performed By: ROMAN PEYSAKHOV

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

if -

Struct = > 0.5p .> 5:1 Aspect Ratio Grid acceptance; yl- Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

EDS spectrum conforming to laboratory least 20 unfolded oroveriapped grid squares <5% holes or opaque areas F B c M >5|j

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 Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_002886920

NYC-WTC_000220974