NYC-WTC_000224797

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE I Volume (liters): 1920 Lab Group #: 7299 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 3 Grid Opening Size: 0.01124 Client Sample #: 03 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRIP ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/2/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or EDS I No >=05 M ; =5|J (Nonadb ! F 6 C M Chrys Amphibole Nonasb Ambig/ND Elements) ' No Coord <5m —d I

43

Struct ” > 0.5^ > 5.' I Aspect Ratio Grid acceptance.

Positive diftraclion patern properties conforming to <50% undissolved filter, oveiiapped or folded Totals laboratory identification cnteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% ‘ F B M >5|J \'= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite I Non-Identified NSD = No Structures Detected

CITY_21MC100_002894641

NYC-WTC_000224797