NYC-WTC_000198322

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 7845 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 2 Grid Opening Size: 0.01124 Client Sample #: 02 Area Examined: 0.04496

GIUD BOX: Magnification: 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/23/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Norv EDS No (Nonadb F B C M >=051] I>=5|J Chrys Amphibole Nonasb Ambig/ND No Coord <5p Etements)

77

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance; Positive diffraction pattern properties conforming to "50% undissolved 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 '/= EDS spectrum 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 Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSO = No Structures Detected

CITY_21MC100_003029943

NYC-WTC_000198322