NYC-WTC_000208337

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 8759 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 17 Grid Opening Size: 0.01124

Client Sample #: Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Anal vsis Date: 8/25/02

Analysis Performed By: ROMAN PEYSAKHOV

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

I

Siruci = > 0.5(4 > 5:1 Aspect Ratio Grid acceptance:

NAPositive biftraclion 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 >5p y= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES j Amph: bole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C.?.CIuster (>3 Intersecticns) \ Anthophyllite Non-Asbustos M = Matrix Tremolite Actinolite Non-Ideniified NSD = No Structures Detected

CITY_21MC100_003021664

NYC-WTC_000208337