NYC-WTC_000207613

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet ClicntNam^ NYC BOE Volumejlitersl: 1928 Lab Group #: 8226 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 10 Grid Opening Size: 0.01124 Client Sample #: Area Examined: 0.04496 mm- •40 ' GRID BOX: li^(o O Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openin2s: 4 -Analysis Date: 6/23/02 -

ROMAN PEYSAKHOV

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

77X77

■ i

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 ale least 20 unfolded or overlapped grid squares <5% F B C M >5p EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES i Amphibole F = Single Fiber . Amosite I . B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite, Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite'■■ M = Matrix Non-Identified Actinolite ' NSD = No Structures Detected

CITY_21MC100_003015494

NYC-WTC_000207613