NYC-WTC_000230162

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume filters): 1936 Lab Group #: 6491 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 3 Grid Opening Size: 0.01124

Client Sample #: 3 Area Examined: 0.04496 mm’

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 1/28/02

Analysis Performed By: MARKPEYSAKHOV

GO. Structure Structure Type Length ID of Structure NorN EDS No ■ (Nonadb F B C M >=0^1 i>=5iJ Chrys Amphibole Nonasb Ambig/ND No Coord <5u Elements)

;s era- <-

■ Struct = > 0.5|i.> 5:1 Aspect Ratio Grid acceptance: '/= Positive diffraction pattern properties conforming to <50% undissolved filter, overiapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overiapped gnd squares <5% F B C M I >5tJ EDS spectrum conforming to laboratory holes or opaque areas' Identification criteria observed Chrysotile AiMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC100_003388861 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230162