NYC-WTC_000218091

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NT'C BOE Volume (liters): 1920 Lab Group #: 6SS4 Filter Type ' Filter Area: MCE '-d? IT? In- Lab Sample #: 10 Grid Opening Size: 0.01124

Client Sample #: 10 Area Examined: 0,(H496 mm*

GRID BOX: Magnitlcariun: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/2/02

Analysis Performed By: MARK PEYSAKHOV

GO, Structure Structure Type Length ID of Structure N or V i cDS No ■ i (Ncnadb F B C M >=05 p >=5p Chrys Amphibole Nonasb Ambig/ND I No Coord <5p I Eiemenis;

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: 4 = 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 overlapped grid squares <5% F B C M ! >5ij V= EDS spectrum conforming to laboratory holes or opaque areas identificalion criteria observed Clirysotile ■AMPHIBOLES Amphibole F = Sirgie Fiber Amosite Crocidolite Ambiguous I S = Bundle (<3 fibers <1 fiber diameter apart C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos j Tremolite M = Matrix Actinolite I Non-Identified , NSD = No Structures DeiecletJ

CITY_21MC100_000465873 NYC-WTC_000218091