NYC-WTC_000228927

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Group #: 7750 Filter Type / Filter Area: MCE 385 ram" Lab Sample 12 Grid Opening Size: 0.01124 ■Client Sample #: 14 Area Examined: 0.04496

GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/15/02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length !O of Structure N or v EDS (Nonadb No F B C M >=05 p :>=5m Ctirys Amphibole Monasb Anobig/ND No Coord <5m Etemenis)

T

Struct = > O.Su > 5:1 Aspect Ratio Grid acceptance: / = Positive diffraction pattern properties conforming to <30% undisso ved filter, gvedapped 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 • EDS Spectrum conforming to leboratorj holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES * Amphibole F - Single Fiber Amosite S = Bundle (<3 fibers <1 fiber diamater apart Crocidolite Ambiguous C = Cluster{>3 intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD » No Structures Detected

CITY_21MC100_002901909

NYC-WTC_000228927