NYC-WTC_000202890

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3600 Lab Group 9035 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 41 Grid Opening Size: 0.01124

Client Sample #: 41 Area Examined: 0.24728 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure NorN EDS (Nonadb No F B I C M >=05 p :>=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

T -33

T' ff If 'f

It

11 ZL II II 9 II 'I

O : I i Phofo No. tfrom 1 in 5 asbestos containing sampiesj Grid acceptance: Struct = > 0,5p 5:1 Aspect Rado <50% jndissoived filter, overlapped or folded Totals 1= Positive diffraction pattern prooenies conforming to <10% particulate coverage >50% coverage ate laooratory identification critena observed least 20 unfolded or overlapped grid squares <5% f F B C holes or opaque areas y= EDS spectrum conforming :o laboratory Chrysotile Identification criteria ooserved AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections! Anthophyllite j Non-Asbestos Tremolite I-------------- :------ 1 M = Matnx i Non-Identified ! Actinolite I I. NSC = No Structures Detected

CITY_2IMCl00_003069474

NYC-WTC_000202930