NYC-WTC_000227538

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 7250 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 9 Grid Opening Size: 0.01124 Client Sample #: 12 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 3/28/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or N EDS (Nonadb No F B C M >=05 p :>=5|J Ch^s Amphibole Nonasb Ambig/ND Elements) No Coord <5p

^2

Struct = > 0.5p > 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

\^= EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% holes or opaque areas F B c M >5m

identification criteria observed Chrysotile AMPHIBOLES ; Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite 1 Ambiguous C = Cluster (>3 Intersections) Anthophyllite , Non-Asbestos Tremolite • M = Matrix Non-Identified Actinolite i NSD = No Structures Delected

CITY_21MC10 0_002 818966

NYC-WTC_000227538