NYC-WTC_000201815

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 6953 Filter Type / Filter Area: MCE 385 nrf Lab Sample #: , 10 Grid Opening Size: 0.01124 Client Sample #: 10 Area Examined: 0.04496 GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: TOO. KeV # Grid Openings: 4 Analysis Date: 3/6/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or T . EDS No (Nonadb F B C M >=06 u ; >=5|J Chrys Amphibole Nonasb Ambig/ND No Coord <5|J Elements)

/IT Z <3-2. ^2. If A

id Struct = > O.Sju > 5; 1 Aspect Ratio Gric acceptance; Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or to ded Totals laboratory identification criteria observed <10% particjiate 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 identitication criteria observed Chrysotile AMPHIBOLY" r Amphibole F = SngleFiber Amosite t 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite i Ambiguous r Anthophyllite I C = Cluster (>3 Intersections) Non-Asbestos I t Tremolite ; t } ■ M = Matrix f ; i Non-Identified Actinolite I NSD = No Structures Detected F

CITY_21MC100_003269168

NYC-WTC_000201815