NYC-WTC_000230299

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume niters): 1944 Lab Group #: 6609 Filter Type / Filter Area: MCE 385 Lab Sample #: 19 Grid Opening Size: 0.01124 Client Sample #: 19 Area Examined: 0.04496 mm= GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/9/02

Analysis Performed By: MARK PEYSAKHOV

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

ZZ5ZZ i.;

Struct = > 0.5p -> 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to ■jSO’/o undissolved filler, overlapped or folded Totals laboratory identification criteria observed <10% parficulate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C M >5(j '/= EDS spectrum contonning to laboratory holes 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 T remolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC100_002723159 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230299