NYC-WTC_000207535

NYC 9/11 Public Portal Document

TEM Asbestos (airV Count Sheet Client Name: ■ NYC BOE- ■ Volume (liters): 1920 Lab Group #: 8162 ■ Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 3 Grid Opening Size: 0.01124 Client Sample #; 3 , . Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 • GRID ID: Accelerating Voltage: lOOKeV; ■ . # Grid Openings: 4 Analysis Date: 6/18/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ibofStructure Norv EDS No ' , (Nonadb- F B C M >=05 p >=5p Chrys Amphibole Nona'sb Ambig/ND Elements) No Coord <5u

J A

Struct = > 0.5p -> 5:1 Aspect Ratio Grid acceptance: '/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification crileria.observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p EDS spectrum conforming Io laboratory holes or opaque areas identification criteria Observed Chrysotile I : AMPHIBOLES~i. Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart ' Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite., NSC = No Structures Detected

CITY_21MC100_003015372

NYC-WTC_000207535