NYC-WTC_000196925

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1S24 Lab Group #: Filter Type / Filter Area: MCE 3S5 mm- tabSampltO/: GridOneningSi^ 0.01 124

Clientsample#: 13 Area Examined: 0.04496 mm-

GRID BOX: Maginficationi 20.000 GRID ID: .Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 30/02

Analysis Performed By: MARK PEYSAKHOV

GO Structure Structure Type Length ID of Structure \ or v EDS iNonadt No F B C M >=05 u ~T >=51J Chrys | Amphibole Nonasb Ambig/ND No Coord I Elements) <5u

------- L

O’

1—

I. ...

Struct = > 0.5)1 >5:1 Aspect Ratio Grid acceptance:

2 = 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 Tf B I C ! M i>5u v = EDS spectrum conforming to laboratory holes or opaque areas Chrysotile I —1----- ----- ----- identification criteria observed .AMPHIBOLES Amphibole F = Single Fiber Amosite ■Ambiguous 1 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_003044206

NYC-WTC_000196925