TEM asbestos air count sheet, PS 89M, Jan 18 2002

NYC 9/11 Public Portal Document

TEMAsbestosJairLC ountSheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 6363 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 6 Grid Opening Size: 0.01124

Client Sample #: 06 Area Examined: 0.04496 mm*

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 1/18/02

Analysis Performed By: BP ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 0 EDS No (Nonadb F B C M >=05 u ' >=5|j Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

(/ 0

Struct = > O.Sg >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% F B C M >5u 9= EDS spectrum conforming to laboratory holes or opaque areas . identification criteria observed Chrysotile AMPHIBOLES i Amphibole F = Single Fiber Amosite Ambiguous | B = Bundle (<3 fibers <1 liber diameter apart Crocidolite I C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos i Tremolite ! M = Matrix ' Non-Identified Actinolite NSD = No Structures Detected

CONFIDENTIAL, SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008 CITY_21 MC100_014660152

NYC-WTC_000174749