NYC-WTC_000199290

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume /liters): 1928 Lab Group #: 8809 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 16 Grid Opening Size: 0.01124

Client Sample #: 16 Area Examined: 0.04496

GRID BOX: Maonification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 9/5/02

Analysis Perl'oi med By: MARK PEYSAKHOV

Length ID of Structure N or 7 ECS GO, Structure Structure Type (Nonadb No F B C M >=05 M Chrys Amphibole Nonasb Ambig/ND No Coord <5u Elements)

4

I I

Struct = > O.ip > 5:1 Aspect Ratio Grid acceptance:

4= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ale laboratory identification criteria observed least 2C unfolded or overlaoped grid squares <5% F B C M >5p /= EDS soectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart I Crocidolite Ambiguous \ Anthophyllite C - Cluster (>3 Intersections) Non-Asbestos M = Matrix j T remolite ; Actinolite Non-Identified NSD =,No Structures Detected

CITY_21MC100_003048968

NYC-WTC_000199290