NYC-WTC_000221524

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 7291 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 9 Grid Opening Size: 0.01124 Client Sample #: 09 Area Examined: 0.04496 mm-

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

Analysis Performed By: ROMAN PEYSAKHOV

GO. ] Structure Structure Type Length ID of Structure N or EDS , (Nonadb i - No F B C M >=05 p Chrys Ampnibole Nonasb Ambig/ND No Coord <5u Elements) I

7 22/ ZET I

—

I I 1

Siriict = > U.5u >5:1 Aspect Ratio Grid accep(3"ce

V= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratcry identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% r i F I B I C M ! >5p v= EDS spectrum conforming to laooralon/ holes or opaque areas identification criteria observed Clirysotile | i AMPHIBOLES Amphibole i F = Single Fiber Amosite B = Bundle (<3 fibers <1 liber diameter apart Crocidolite Ambiguous j

C = Cluster (>3 intersections) Anthophyllite . Non-Asbestos j Tremolite M = Matrix Actinolite Non-Identified I NSO = No Structures Detected I

CITY_21MC100_002888309

NYC-WTC_000221524