NYC-WTC_000190153

NYC 9/11 Public Portal Document

TEM Asbestos (air) Couat Sheet C iient ^ame NT N BO2 V oiume (liters) ; c 0' Lab Gs oiip #' 0831 Fiber Type / Filter Area 2 ■ 'TT’-

Lab Sample #. c; Grid Opening Size- Oul 12-1

Client Sample #• TO 8 Area Examined: 0 044'^6 nm-

GRID BOX: Magnification 20 000 GRID ID- Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2 25-02

Analysis Performed By; MARK PEYSAKHOV

GO Structure Structure Type Length ID of Structure Nor EDS No —i (Nonadb F B C M >=05 p i ■=5m Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

"Z

Stiuct = > 0 5p >5 1 Aspect Ratio Grid acceptance Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u ^1- EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chiysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_003088678

NYC-WTC_000190153