NYC-WTC_000194410

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters’): 1920 Lab Group #: 7738 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 2 Grid Opening Size; 0.01124 •Client Sample #: 2 Area Examined; 0.04496 mm^ GRID BOX: Magnification: 20 000 GRIDID: Accelerating Voltage: lOO KeV Grid Openings: 4 Analysis Date: 5/14/02

Analysis Performed By: MARKPEYSAKHOV

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

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern propertes conforming to ^^0% J^J^SSeS^X^te Totals laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F B C M >5m . EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES ‘ Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Acbnolite NSD = No Structures Detected

CITY_21MC100_003096293

NYC-WTC_000194410