NYC-WTC_000191854

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 8162 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 5 Grid Opening Size: 0.01124

Client Sample #: 5 Area Examined: 0,04496 mm*

GRID BOX: M a unification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/1S/02

Analysis Performed By: MARK PEYSAKHOV

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

— <c_

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance; Y Positive diffraction pattern properties conforming to 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 >5y ^1= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile rAMPHtBOLES ! Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diarneter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003091839

NYC-WTC_000191854