NYC-WTC_000226756

NYC 9/11 Public Portal Document

TEM Asbestos (air) Couat Sheet Client /Name: NYC BOE Volume (liters): 1840 Lab Group #: 6832 Filter Type / Filter Area: MCE mm- Lab Sampie #: Grid Opening Size: 0.01 i2

. Client Sample #: 01 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID ; zA Aa- Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/26/02

Analysis Performed Bv; ROMAN PEYSAKHOV

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

./X / (§ 3 A cm A A'V „ A" Av -

-I

4

-I

Struct = > 0.5p >511 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 criteria observed least 20 unfolded or overlapped grid squares <5% F B C M >5u y= EDS spectrum conforming to laboratory 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 = Cluster (>3 Intersections) Anthophyllite Noil-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002923009

NYC-WTC_000226756