NYC-WTC_000228606

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; NYC BOE Volume (liters): 1800 Lab Group #: 7513 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #; 1 Grid Opening Size: 0.01124

Client Sample #; 03 Area Examined; 0.04496

GRID BOX: Magnification: 20 000 GRID ID; Accelerating Voltage: 100 KeV it Grid Openings; 4 Analysis Date: 4/23/02

Analysis Performed By: MARKPEYSAKHOV

GO, Structure Structure Type Length ID of Stnjcture N or v EDS (Nonadb No F B C M >=05 M :>=5p Chrys Amphiboie Nonasb Ambig/ND No Coord <5p Elements) < <gx —-c— -i —TP— J

Struct = > 0.5m * 5:1 Aspect Ratio Grid acceptance: ’/= PosWve diffraction pattern properties conforming to <50% undissolved fitter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or wartapped grid squares <5% F B C M >5m >1= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile amphiboLes Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 liber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbcstos Tremolite M = Matrix Actinolite Non-Identificd NSD = No Structures Detected

CITY_21MC100_002901122

NYC-WTC_000228606