NYC-WTC_000230368

NYC 9/11 Public Portal Document

TEM^Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters'): 1928 Lab Group #: 6801 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 4 Grid Opening Size: 0.01124 Client Sample #: 4 Area Examined: 0.04496 mm- GRID BOX: ^S3? ■ Magnification: £0 000 GRID ID : Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/24/02

Analysis Performed By: ■ ROMAN PEYSAKHOV.

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

' A

ri

'tSrn ■

Struct = > 0.5p „> 5:.l Aspect, Ratio Grid acceptance: y'= 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 overtapped grid squares <5% F B C M ’5u y = EOS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart i Crocidolite Ambiguous C = Cluster (>3 Intersections) ! Anthcophyllite Non-Asbestos ' T remolite M = Matrix Non-Identified Actinolite NSD = No Structures Delected

CONFIDENTIAL, CITY_21MC1OO_OO3389152 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230368