NYC-WTC_000190075

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume filters): 1832 Lab Group #: 6765 Filter Type / Filter Area: MCE 385 mnE Lab Sample #: 14 Grid Opening Size: 001124

Client Sample #: 17 Area Examined: 0 04496 mm-

GRID BOX: Magnification: 20,000 GRIDED: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/21/02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure Nor/ EDS (Nonadb No F B C M >=05 M >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5|J Elements)

T 3_YS= iSs 14 ---------------

Struct = > 0 5u > 5 1 Aspect Ratio Grid acceptance a/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification critena observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped gnd squares <5% F B C M >5U >/= EDS spectrum conforming to laboratory holes or opaque areas identification cntena observed Chrysotile AMPHIBOLES 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 Non-Identified Actinolite NSD = i\lo Structures Detected

CITY_21MC1OO_OO3O88565

NYC-WTC_000190075