NYC-WTC_000192771

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7654 Filter Type / Filter Area; MCE 385 mm^ Lab Sample #: 15 Grid Opening Size: 0.01124 Client Sample #: 15 Area Examined: 0.04496 mm^ GRID BOX: Magnification; 20,000 GRID ID: # Grid Openings: 4 IS Accelerating Voltage: Analysis Date; 100 KeV 5/6/02

Analysis Performed By: ZZ^Z ROMAN PEYSAKHOV

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

It/^- (I

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: 7= Positive diffraction pattern properties conforming to *5*^’'*’ urihissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded oroveriapped grid squares <5% F B C M >5p ■7= EDS spectrum conforming to laboratory. holes or opaque areas idenfification criteria observed Chrysotile : AMPHIBOLES "1 Amphibole F = Single Fiber Amosite I B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite t Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSO = No Structures Detected

CITY_21MC100_003093177

NYC-WTC_000192771