NYC-WTC_000212779

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: t4YC BOE Volume (liters): 1920 Lab Group #: 7967 Filter Type / Filter Area: MCE 385 Lab Sample #: 1.0 Grid Opening Size: 0.01124 Client Sample #: 10 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV if Grid Openings: 4 Analysis Date: 6/4/02

Analysis Performed By: MARK PEYSAKHOV

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

2 ------ 4.

-3

■■

Struct > 0 5p >5.1 Aspect Ratio Grid acceptance: V = Posilive diffraction pattern properties confomiing to <50% undissolved filter, overlapped or folded Totals laboratoiy identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5m v= EOS spectrum conforming to laboratory holes or opaque areas loentificabon criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite S = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matix i Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_002852304

NYC-WTC_000212779