NYC-WTC_000219454

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; NYC BOE Volume (liters): 1840 Lab Gronp #: 6550 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #; 12 Grid Opening Size: 0.01124

Client Sample #: 12 Area Examined: 0.04496 mm’

GRIPJBQT^; Magnification; 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysts Date: 2/3/02

Analysis Performed By: gp ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or V EDS No >=05 u Amphibole Nonasb Ambig/ND (Nonadb F B C M >=5p Ch^s Elements) No .Coord <5m

APIS'S

Struct •= > O.Sp > 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolyed RRer. overtopped or folded Totals “ <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overtapped grid squares <5% F B C M >5|j '/=EDSspedrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile i AMPHIBOLES i Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Idenlified NSD = No Structures Detected

CITY_21MC100_002880673

NYC-WTC_000219454