NYC-WTC_000201143

NYC 9/11 Public Portal Document

J EM Asbestos (air) Count Sheet Client Name: NYC BOF Volume (liters): 1840 Lab Group #: 7890, Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 11 Grid Opening Size: 0.01124

Client Sample #: 11 Area Examined: 0.04496 mm*

GRID BOX: // Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/28/02

Analysis PerL rmed By: fy/ ROMAN PEYSAKHOV

GO, i Structure Struc’ 3 Type Length ID of Structure N or V EDS (Nonadb No F E C M >=05 p >=5|j Chrys Amphibole Nonasb• Ambig/ND No Coo',J Elements) <5p

ZZEt : (f If

r—

Struct = > 0.5g > 5:1 Aspect Ratio Grid acceptance: V= Positive diffraction pattern groperties confor , iQ <50% undissolved filteri 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 >5|J EDS spectrum conforming to laboratory boles or opaque areas identification criteria observed Chrysotile 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_000201153