NYC-WTC_000201874

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volnme Iliters): 1840 Lab Group #: 6555 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 14 GndCipenjnmJojzLi 0.01124

Client Sample #: 14 Area Examined: 0.04496 mm"

GRID BOX: |> Magnification: . 20.000 GIUD ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/4/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 4 EDS (Non.gdb No F B C >=05 p : •=5|J Chrys Amphibole Nor.asb Ambig/ND No Coord Elemenis) <5M

— <■ YfY oSe?' -------- - — .Lx'e

Struct = > 0.5g > 5:1 .Aspect Ratio Grid acceptance: 4- Positive diffractior pattern properties conforraing to <50% undissolved fiiler, 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 >5p 4- EDS spectrum conforming to laboratory holos of opaque areas , - identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber I Amosite i B = Bundle (<3 libers <1 fiber diameter apart Crocidolite ; Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Icentified Actinolite NSD = No St'uctures Detected

CITY_21MC100_003269353

NYC-WTC_000201874