NYC-WTC_000199286

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1912 Lab Group #: 8809 Filter Type / Filter Area: MCE 385 mm- Lab.Sample #: !2 Grid Opening Size: 0.01124

Client Sample #: 12 Area Examined: 0.04496 mm-

GRID BOX: Maonification: 20,000 GRIDID: -r Accelerating Voltage: 100 KeV W Grid Openings: 4 Analysis Date: 9/5/02

Analysis Perfo rmed By: MARK PEYSAKHOV

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

j ---------- “3

Struct = > 0.5p ,>5:1 Aspect Ratio Grid acceptance:

9= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteiia observed VaedS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% F BJC M >5ij holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Closter (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix. I Non-ldentified Actinolite NSb = No Structures Detected

CITY_21MC100_003048964

NYC-WTC_000199286