NYC-WTC_000200716

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1805 Lab Group #: 7606 Filter Type / Filter Area: MCE 385 Lab Sample #: 15 Grid Opening Size: 0.01124 Client Sample #: 15 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRID ID: Aceelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/2/02

Analysis Performed By: MARK PEYSAKHOV

C-0. Structure Structure Type Length ID of Structure Nor V EDS No {Nonadb F B C M >=05 p I >=51J Chrys Amphibole Nonasb Ambig/ND No Coord <5p . Elements)

J Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: 7= 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 overiapped grid squares <5% F B C M >5p N eds spectrum conforming to laboraiory holes or opaque areas identification criteria observed Chrysotile PamphibolesV Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) i Anthophyllite Non-Asbestos i Tremolite M = Matrix i Non-Identified I Actinolite NSD = No Structures Detected

NYC-WTC_000200730