NYC-WTC_000189086

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; NYC BOE > plume (litersI.• 1952 Lab Group #: 5948 Filter Type / Filter Area: MCE 385 mm* Lab Sample #: 16 Grid Opening Size: 0.01124 Client Sample #: 16 Area Examined: 0.04496 mm*

GRID BOX. Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/21/01

Analysis Performed By; MICH.AEL GORYCKl

GO. Structure Structure Type Length ID of Structure Nor 7 EDS (Nonadb No F B C >=05 u >=5p Chrys Amphibole Nonasb AmbigZND No Coord <5u Elements)

AM A i xa

Struct = > G,5u .>5:1 Aspect Ratio Grid acceptance; •V= Positive diffraction pattern properties conforming to <50% undissQlved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

\ = EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% holes or opaque areas Tf B c M >5U ;

identification criteria observed Ciirysotil? • AMPHIBOLES I Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos J T remolite M = Matrix Non-Identified I Actinolite NSD = No Structures Detected

CITY_21MC1OO_OO3O83436

NYC-WTC_000189086