NYC-WTC_000201905

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: BOE .Volume (liters): . 1840 Lab Group #: 6646 Filter Type / Filter Area: MCE 385 mir? Lab Sample #: 2 Grid Opening Size: 0.01124 Client Sample #: 2 Area Examined: ■ 0.04496 mm- - GRID BOX: Magnification: . 20,000 GRIDID: Accelerating Voltage: 400 KeV # Grid Openings: 4 Analysis Date: 2/12/02

Analysis Performed By: MARK PEYSAKHOV

, GO, Structure Structure Type Lsngth ID cf Structure N or 4 EDS No (Nonadb F B C M ■=5p . Chrys Anphibole Nonasb Ambig/ND No Coord <5p Elements)

_ _ Z Z~2’

Struct = > 0.5(1 > 5:1 Aspect Ratio Grid acceptance

4= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or foldeo Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p 4= EDS spectrum conforming to laboratory holes or opaque areas identi-ication criteria observed Ghrysotile AMPHIBOLES Amphibole F = S ngle Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Idsntified Actinolite ) NSD = No Structures Detected

CrTY_21MC100_003269509

NYC-WTC_000201905