TEM Asbestos air sample results, NYC BOE, Nov 2001

NYC 9/11 Public Portal Document

TEMAsbestosXairlCount Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 5897 Filter Tvpe / Filter Area: MCE 385 mm* Lab Sample #: 8 Grid Opening Size: 0.01124 Client Sample #: 8 Area Examined: 0.04496 mm-

GRID BOX: ■ Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/15/01

Analysis Performed By; MICHAEL GORYCKl

GO. Structure Structure Type Length ID of Structure N or 7 EDS (Nonadb No c B C M >=06 p >=5pi Chrys Amphibole Nonasb Ampig/ND No' Coord <5u Eiements) )

I yt/Sn

Zr Ct ! i I i 1

i i T i

Struct = > 0.5p ,> 5:1 Aspect Ratio Grid acceptance;

A= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% FjB C M >5p n'= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES j Amphibole F = Single Fiber Amosite । 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite ) Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matrix Non-Identified i Actinolite NSD = No Structures Detecieri

CITY_21MC1OO_OO31O6446 NYC-WTC_000185363