NYC-WTC_000230253

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1952 Lab Group #: 6575 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 9 Grid Opening Size: 0.0'1124 Client Sample #: 9 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRIDED: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 2/6/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Norv EDS No (Nonadb F B C M >=05 M :>=5p Chrys Amphibole Nonasb Ambig/ND No . Coord <5u Elements)

'3

Struct = > 0.5|j .> 5:1 Aspect Ratio Grid acceptance: A- Positive diffraction pattern properties conforming to <^0% undissoNed 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 A- EDS spectrum conforming to laboratory holes or opaque areas identificalion criteria observed Chrysotile i AMPHIBOLES Amphibole F = Single. Fiber . Amosite ■ \ B = Bundle (<3 fibers <1 fiber diameter apart ' Crocidolite _ Ambiguous C = Cluster Intersections) Anthophyllite Non-Asbesxos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC100_003388983 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230253