NYC-WTC_000218373

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: WC BOE Volume (liters): 1920 Lab Group #: 6999 Filter Type / Filter Area: MCE 385 mtn-' Lab Sample #: 11 Grid Opening Size: 0,0! 124

Client Sample #: 11 Area Examined: 0,04496 mm-

GRID BOX: 0,// . Magnification: 20,000 GRID ID: WX' Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3'9/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 9 i EDS - ----- ------I (Nonadb No F B C M >=05 M >=5(j Chrys Amphibole Nonasb i nmbig/Nu , No Coord <5p i I Elements) v Z //____ 4 1

I I I

Struct = > O.ip >51 Aspect Ratio Grid acceptance, >/= Positive diffraction pattern properties conforming to <50% undissoived filter, overlapped or folded Totals laboratory identification criteria observed <10% particulata coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B i C ! M ! ■7= EDS spectrum contorming to laboratory holes or opaque areas identification crttena observed Chrysotile AMPHIBOLES Amphibole F ’ Single Fiber Amosite S = Bundle (<3 libers <1 fiber diameter apart Crocidolite Ambiguous I 1 C = Cluster (>3 Intersections) Anthophyllite Non-.Asbes;os ; 1 f T remolite M = Matrix Actinolite Non-Iclentified j I NSD = No Structures Detected

CITY_21MC100_002878325

NYC-WTC_000218373