NYC-WTC_000212381

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet C lient Name: NYC BOE Volume (liters): 1920 Lab Group #: 7293 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 15 Grid Opening Size: 0.01124

C lient Sample #: 15 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/1/02

Analysis Performed By: ROMAN PEYSAKHOV

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

Z / Z’ /sr-—

Struct - > 0.5p >5:1 Aspect Ratio Grid acceptance: y - Posit ve diffraction pattern profjerties conforming to <50% 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 y= EDS spectrum conforming ;o aboratory holes or opaque areas ioenlificaSon cntena 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 = Matrix Non-Identified Actinolite NSO = No Structures Detected

CITY_21MC100_002866297

NYC-WTC_000212381