NYC-WTC_000229027

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume niters): 1816 Lab Group #: 7S35 Filter Type / Filter Area: MCE 385 Lab Sample #; 6 Grid Opening Size: 0,01124 Client Sample #: 08 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/23/02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Sfructure Type Length 10 of Structure N or V EDS No (Nonadb F 6 C M >=05 (J >=5p Ch^s Amphiboie Nonabb Afflbig/NO No Coord <5p Elemerts)

___ ____

1

I

Struct = > 0.5)1 > 5; I Aspect Ratio Grid atxeptance: '11= Positive diffraetjon patlern properties ccnforming to <50% undissolved fitter, overlapped or folded Totals laboratorj identification criteria observed <10% psrticplata coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% ) f B C M >5p y = EDS spectrum conforroing to laboratory (totes or opaque areas lOentificafon criteria cbserved Chrysotile ; AMPHjBOLES ■ Amphibole F = Single Fiber Amostle Crocidolite Ambiguous B = Bundle (<3 fibers <1 Uber diameier apart C = Clusler (>3 liKerseclions) Anthophyllite Non-Asbestos Tremolite M = MaifK Actinolite N'on-Identified NSD = No Structures Detected

CITY_21MC100_002902071

NYC-WTC_000229027