NYC-WTC_000215951

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters’): 1920 Lab Group 7062 niterJTaaeZFjlterArea^ MCE 385 Lab Sample #: 11 Grid Opening Size: 0.01124 Client Sample #: 11 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/13/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Norv EDS No >=05 p (Nonadb F B C >=5p Chrys Amphibole Nonasb Ambig/ND I No ! Coord <5p Elements)

zY > x-z.. yg/j -SE. if

z z 4

F I '

d Struct = > 0.5 .> 5:1 Aspect Ratio Grid acceptance: V = Positive diffraction pattern properties conforming to 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 >5P , 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 T remolite M = Matrix Non-Identified Actinolite NSD = Mo Structures Detected

CITY_21MC100_002876251

NYC-WTC_000215951