NYC-WTC_000201374

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Group #: 7381 Filter Type / Filter Area: MCE . 385 mnr Lab Sample #: 15 Grid Opening Size: 0.01124

Client Sample #: 15 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000' ' GRIDID: ^5 Accelerating Voltage: 100 KeV # Grid Openings: Analysis Date: 4/11/02

Analysis Performed By: V/ ' ROMAN PEYSAKHOV

Structure Type Length ID of structure N or 7 EDS GO. Structure (Nonadb No F B C • M >=05 (J Chrys Amphibole Nonasb Ambig/ND , No Coord <5|J Elerr.ents)

t ' d t/ h

4-^5

/Struct = > 0.dpi > 5:1 Aspect Ratio Grid acceptance: -

7= 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 >5p 7= EDS spectrum conforming to laboratory , holes or opaque areas identification criteria observed Cln-ysotile 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 Non-Identified Actinolite NSD = No Structures Detected

NYC-WTC_000201388