NYC-WTC_000222800

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1808 Lab Group #: 6933 Filter Type / Filter Area: MCE 385 mm^ Lab Sample 16 Grid Opening Size: 0.01124 Client Sample #: 19 Area Examined: 0.04496 mm-

GRID BOX: 411 Magnification: 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/5/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or '/ EOS 1 No =05 p Amphibole ; Nonasb - (Nonadb I F B C M Chrys Ambig/ND No Coord <5p Elements) i ---------------- i

~7i 4 /Jr —

T

Struct = > 0.5(.i > 5:1 .‘\spect Ratio Grid acceptance' '/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laooratory identificalion criteria observed <10% paniculate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5tj v= EOS spectrum conforming to laboratory holes or opaque areas identificalion criteria observed Chi'vsotile AM PH I COLES Ampliiboie F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter acan Crocidolite ■Ambiguous C = Cluster (>3 Intersections) Anthophyllite Noii-.Asbestos Tremolite M = Matrix Non-ldentified Actinolite NSD = No Structures Detected

CITY_21MC100_002918945

NYC-WTC_000222800