TEM Asbestos air sample results, NYC BOE, Dec 2001

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: MV' BOE V olume (liters): 1936 Lab Group #: 6010 Filter Type / Filter Area: MCE 385 mir? Lab Sample #: 3 Grid Opening Size: 0.01124

Client Sample #: 3 Area Examined: 0.04496 mir?

GRIP BOX: Magnification: 20,000 GRIP ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 12/1/01

Analysis Performed By: M-ARK PEYSAKHOV

30. Strurture i Structure Type Length ID of Structure N or EDS (Nonadb No F B C M >=06 A- I - >=51J Chrys Amphibole Nonasb Ambig/ND No Coord Elements) .~<5p

i-

r1

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved filler, overlappec ot folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <6% F B C M >5m EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrj'sotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite ' Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matrix Non-Identified NSD = No Structures Detected AcSnolite J..

CONFIDENTIAL, CITY_21MC100_003458558 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000179269