NYC-WTC_000230124

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1944 Lab Group #: 6429 Filter Type / Filter .Area: MCE 385 mm^ Lab Sample #: 4 Grid Opening Size: 0.01124 Client Sample #: Area Examined: 0.04496 mm- GRID BOX: 7^^ / Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 1/24/02

Analysis Performed By: ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure N or \ EDS No (Nonadb , / iNo Coord F B C M >=05 p >=5!J Chrys Amphibole Nonasb Ambig/ND Elements) <5p

_______ J7W X 7 k/^ 4 z/

Struct = > 0.5p .> 5:1 Aspect Ratio Grid acceptance; ^1= Positive diffraction pattern properties conlonning to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria obsen/ed <10% particulate coverage >50% coverage ate . least 20 unfolded or overlapped grid squares <5% F B C M >5iJ i ■/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile i AMPHIBOLES i Amphibole F = Single Fiber Amosite B = Bundle (<3 libers <1 fiber diameler apart Crocidolite Ambiguous C = Cluster (>3 Intersections! Anthophyllite i Non-Asbestos T remolite M = Matrix Non-Identified Actinolite ■ ' NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC100_003388775 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230124