TEM Asbestos Air Sample Data Sheet, Aug 2002

NYC 9/11 Public Portal Document

TEMAsbestos fair) Count Sheet Client Name: , NYC BOE Volume filters): 1928 Lab Group #: 8760 Filter Type / Filter Area: MCE 3S5 mm’ Lab Sample #: 8 Grid Opening Size: 0.01124 Client Sample #; 8 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: lOO KeV # Grid Openings: 4 Analysis Date: 8/25/02

Analysis Performed By: ROMAN PEYSAKHOV

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

Struct = > ().5|4 >5:1 Aspect Ratio Grid acceptance: \/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or iolded Totals laooratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u Et)S spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile ' amphiboles'" ■ Amphibole F’= Single Fiber Amosite 6 = 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

CONFIDENTIAL, CITY_21MC100_003430253 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000175121