NYC-WTC_000197016

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1832 Lab Group #: 6989 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 12 Grid Opening Size: 0.01124

Client Sample #: 14 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/9/02

Analysis Performed By: MARK PEYSAKHOV

GO, Structure Structure Type Length ID of Structure N or y EDS (Nonadb ' No F B C M >=05 p Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements) ------------- i

□ .rr --------- i

Struct = > iJ.Sp > 5:1 .Aspect Ratio Grip acceptance'

4= Positive diffraction pattern propenies conforming to <50% undissolved lilter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% [ F B C M I >5p \'= EDS spectrum conforming to laboratory identification criteria observed holes or opaque areas / Chrysotile -H— 1 AMPHIBOLES Amphibole F = Single Fiber Amosite Ambiguous B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite C = Cluster (>3 Intersections) Anthophyllite Noil-Asbestos Tremolite M = Matrix Non-ldentil'ied i Actinolite NSD = No Structures Detected

CITY_21MC100_003044370

NYC-WTC_000197016