NYC-WTC_000207133

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count et Client Name: NYC BOE 1 ine niters): 1920 Lab Group #: 7851 FUter Tv|m liter Area: MCE 385 mm^. Lab Sample #: 18 Grill ■ icning Size: 0.01124 Client Sample #: 18 Al Examined: 0.04496 mm^ GRID BOX: . ■ rnification: 20,000 GRID ID: AcceL . . ng Voltage: 100 KeV # Grid Openings: 4 : I lysis Date: 5/25/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length . structure NorY/7 EDS No >=05 p . • ■ >=5p (Nonadb F. B C M Chrys ■Ampi. Nonasb Ambig/NO. i No ■ Coord <5p . Elements)

;\v.

V-

- -

r - Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: •7 = Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded • ' totads' Wr. laboratory identification criteria observed <10% particulate coverage >50% coverage ate

V= EDS spectrum conforming to laboratory . least 20 unfolded or overlapped grid squares <5% holes or opaque areas F B c M >5p ■

identification criteria observed irysotile ; AMPHIBOLES nliibole F = Single Fiber Amosite • B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite • ilgUOUS

C = Cluster (>3 Intersections) Anthophyllite •sbestos Tremolite M = Matrix N. .-L entiBed Actinolite NSD = No Structures Detected

CITY_21MC100_003014674

NYC-WTC_000207133