NYC-WTC_000200996

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7800 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 13 Grid Opening Size: 0.01124 Client Sample #: 13 Area Examined: 0.04496 mm* GRID BOX: Magnification: 20,000 ' GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/19/02

Analysis Performed MARK PEYSAKHOV

GO. Structure SSructure Type Length ID of Structure -N or 7 EDS No (Nonadb F BIG M =05 M I >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5u Elements)

Struct = > 0.5u ^5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% 'undissolved filter, overlapped or folded Totals laboratory identrfication criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C. M >6p 7= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F - Siiigis Fiber Amosite 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbegtos Tremolite M = Matrix Non-Identified Actinolite NSD = No- Structures Detected

CITY_21MC100_011275344

NYC-WTC_000201008