NYC-WTC_000201563

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters'): 1S48 Lab Group #: 7503 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 1 Grid Opening Size: 0.01124

Client Sample #: 01 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID IP: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/22/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure" Norv EDS ' (Nonadb - No ■ F B C >=05 p >-5[j Chrys Amphibole Nonasb j Ambig/ND ■ No Coord Eiements) <5p

pa -4-

Struct - > 0.5p >5:1 Aspect Ratio Grid acceptance: 7= Positive diffraction oattern properties conforming lo cndissolved filter, overlapped or folded Totals laboratonr identification criteria observed <10% particulate coverage >50% coverage ate ■ least 20 unfolded or overlapped grid squares <5% F B C M >5m 'J= EDS spectrum 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 ,i Ambiguous C = Cluster (>3 Intersecticns) i Anthophyllite i Non-Asbestos Tremolite i M = Matrix Non-Identified Actinolite i NSD = No Structures Detected

NYC-WTC_000201563