NYC-WTC_000229101

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; NYC BOE Votnme (titers): 1864 Lab Group #: 7885 Filter Type / Filter Area: MCE 3S5 mm-

Lab Sample #: 16 Grid Opening Size: 0.01124 Client Sample #: 18 Area Examined: 0.04496 mm-

GRID BOX: Maenification: 20,000 GRID ID; Accelerating Voltage: 100 KeV it Grid Openings: 4 Analysis Date: 5/27/03

Analysis Performed By: MARK PEYSAKHOV

GO, Structure Structure Type Length ID af Structure N or v ECS ’ (Nonacb i Mo F 8 ' C M >=Q5m >=5p Ctirys Amphitole Nonas!) Ambig/KO No Coord Elements) ■

f - ''- I ------------------- 4

1 I 1 JI

i 4 i -I

1

Struct = >O.5p >5:1 Aspect Ratio Grid acceptance: V- Posifive diffraction pattern properties conforming to <50% undasotyed Mer, ovsrtapoed or folded Totals laboratory idantificaton criteria observed <10% particutate coverage >50% coverage ate least 20 unfoWed or overlapped grid squares <5% F B C M ! >5u EDS spearum contorming to laboratory holes Of opaque areas kJentification criteria observed Chrysofile amphiboles Amphibole F = Single Fiber Amosite B = Bundle l<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster Intersections) Anttiophyllite Non-Asbestos Tremolite M < Matrix Actirjolite j Non-ldentified NSP - No Structures Detected

CITY_21MC100_002902201

NYC-WTC_000229101