NYC-WTC_000212598

NYC 9/11 Public Portal Document

TEM Asbestos (air) Coun : Client Name: NYC BOE oh 1920 Lab Group #: 7855 Filter i V . reu: MCE 385 mm^ Lab Sample #: 3 Gr , ■ i.'.e: 0.01124

Client Sample #: 03 icJ; 0.04496 mm^

GRID BOX: . on: 20,000 GRIDID: 100 KeV # Grid Openings: 4 ai c 5/25/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length EDS (Nonadb No F B C M >=05 p :>=5h Cti^s j ■ Ambig/ND No Coord <5u Elements)

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Struct ■■ > O.Sn > 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to *5® undiSSOlved filter, Overlapped 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 >5|j EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed AMPHIBOLES F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite C = Cluster (>3 Intersections) Anthophyllite Toii-zi Tremolite M - Matrix i»n-Id I’ii. Actinolite NSD = No SIructures Detected

CITY_21MC100_002867346

NYC-WTC_0002 12598