NYC-WTC_000228731

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume niters); 1800 Lab Group #: 7614 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 3 Grid Opening Size: 0.01124

Client Sample #: 05 Area Examined; 0.04496 mm’

GRID BOX: Magnification: 20,000 GRID ID; Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/2/02

Analysis Performed By: mark peysakhov

GO, Structure Structure Type Length ID of Slnjctuie N or v EDS No (Nonsdb F B C M >=05 p ’ >=5|J Chrys Amphibole Nonasb Ambig/ND No Coord <5m Elements)

I.r, "T... Struct = > 0,5p >5:1 Aspect Ratio Grid acceptanrie: '/= PosiCve diffraction pattern properties oonforming to <50% undissoived filter, overlapped or folded Totals laboratory identlficabon criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5U v'= EOS spectrurr? conforming (o lafloratoy holes or opaque areas identifration criteria observed Chrysotile AMPHIBOLES r Arnphibole F = Single Fiber Amosite B = Bundis (<3 fibers <1 fiber diameter apsrl Crocidolite Ambiguous C = CPster Intersections) Anthophyllite Non-Asbestos Tremolite M » Matrix Actinolite Non-Idenhfieb USD = No Structures Detected

CITY_21MC100_002901588

NYC-WTC_000228731