NYC-WTC_000204339

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1824 Lab Group #: 7385 Filter Type / Filter Area: MCE 385 mm- Lab Sample 14 Grid Opening Size: 0.01124

Client Sample #: 17 Area Examined: 0.04496 mm*

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

Analysis Perlormed By: ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure N or 7 EDS (Nonadb No F B C M >=05 M >=5(j Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

< 7ZW 26- If (L 53127 (L

___ ___________ L Struct = > 0.5n > 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <^0% undissolved filter, overiapped or folded Totals ___ -u laboratory identification _______ criteria J observed <10% pattculate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B ! C M >51J '/= EDS spectrum conforming to laboratory holes or opaque areas identification cntena observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocirdolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite [ Non-Asbestos Tremolite M = Matrix I Non-ldentified Actinolite NSD = No Structures Detected I ....._ . I . .1

CITY_21MC100_003060146

NYC-WTC_000204339