NYC-WTC_000210645

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 1300 Lab Group #: 5994 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 2 Grid Opening Size: 0.01124

Client Sample #: 7 Area Examined: 0 06744 rnm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 6 Analysis Date: 11/29/01

Analysis Performed By: MARK PEYSAKHOV

GO I Structure Structure Type Length ID of Structure N or y EDS (Nonadb No F B i C M >=05 p >=5p Chrys Amphibole j Nonasb Ambig/ND No Coord <Sp Eiements) i ! - i 3 — I

I I

p

-4 I I 1—r

___1 i

I I 1

i I Struct = > 0 Sp >5 I Aspect Ratio Gnd acceptance

'/= Positive diffraction pattern properties conforming to <50% undissolved filter, overtapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification critena observed least 20 unfolded or overlapped gnd squares <5% F B C M ^1= EDS spectrum conforming to laboratory holes or opaque areas Identification cnteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bunale (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified I NSD = No Structures Detected Actinolite L__ CITY_DEP_WORBY_CANNATA_SUBP_000002787

NYC-WTC_000210645