NYC-WTC_000212466

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1952 1 ab Group #: 7446 Filter Type / Filter Area: MCE 385 mm^ I .ab Sample #: 10 Grid Opening Size: 0.01124

Client Sample #: 10 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 f JRID ID: Accelerating Voltage: 100 KeV 4 Grid Openings: 4 Analysis Date: 4/17/02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or EOS (Nonadb No F B C M >=05 M Chrys Amphitjole fionasb AmbigyND No Coord <5y Elements)

3^^ _3_

Struct = > 0.5u > 5:1 Aspect Ratio Grid acceptance: ■;= Positive diffraction pattern aroperties conforming to <50% undissolved filter, ovedapped or folded Totals I moratory identification criteria otiserveti <10% parbculale coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p -i- EDS spectrum conforming to laDoratory holes or opaque areas identification cntena observed Chrysotile AMPHIBOLES Amphibole f‘ = Single Fiber Amosite Si = Bundle (<3 fibers <1 fiber diameter aoart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Mainx Non-Identified Actinolite USD = No Structures Detected

CITY_21MC100_002866612

NYC-WTC_000212466