NYC-WTC_000199292

NYC 9/11 Public Portal Document

T EM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 8809 Filter Type / Filter Area: MCE 385 mm- Lab Sample 18 Grid Opening Size: 0.01124 Client Sample #: 18 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 AnalysiMLLtLl 9/5/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structurj Type Length ID of Structure N or N EDS (Nonadb No F B C M Chrys Ampniboie Nonasb Ambig/ND No Coord <5p Elements)

I

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance! y= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F B C M >5(j 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 i Ambiguous C = Cluster (>3 Intersections) I Anthophyllite ‘ Non-Asbestos j Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003048970

NYC-WTC_000199292