NYC-WTC_000221671

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 7381 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 5 Grid Opening Size: 0.01124 Client Sample #: 05 Area Examined: 0.04496 mm-

GRID BOX: GRID ID: # Grid Openings: 4 Si Magnification: ■ 20,000 Accelerating Voltage: 100 KeV Analysis Date: 4/11/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Nor'/ EDS No (Nonadb F B C M >=05 p >=5|J Chrys Amphibole Nonasb Ambig/ND No Coord <Sp Elements)

[f

/ Ws: Ll___ -----------------

Struct = > 0.5u >5:1 Aspect Ratio Grid acceptance:

N= Positive diffraction pattern properties conforming tc <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% paniculate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u /- EDS spectrum conforming to laooraiory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos M = Matrix Tremolite Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC1OO_OO2888525

NYC-WTC_000221671