NYC-WTC_000207300

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE■ , Volume niters): 1920 2 . Lab Group #: .,-7950 • ■ Filter Type / Filter Area: MCE .385 .mm" Lab Sample #: 13 GridOpening Size: 0.01124 ' ' ' "

Client Sample #: 13‘ ■ - Area Examined: 0.04496 .mm"'

GRID BOX: ..Magnification: 20,000. GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/3/02

Analysis Performed By: ROMAN PEYSAKHOV V-

GO. ■ ■ Structure Structure Type Length ID of Structure N or V • EDS (Nonadb' No- F B C M >=05 p- :>=5|J Chrys Amphibole Nonasb Ambig/ND No Coord .<5p ■ Elements)

Struct = > 0.5p .>5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties.conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate ■ least 20 unfolded or overlapped grid squares <5% 1“ F B C M >5p ,■ v'= EOS spectrum conforming to laboratory notes or opaque areas identification criteria observed Chrysotile Pamphibol^ Amphibole F = Single Fiber . ' I Amosite Ambiguous . S = Bundle (<3 fibers <1 fiber diameter apart ; Crocidolite r C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos M = Matrix • 1 Tremolite i Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_003014956

NYC-WTC_000207300