NYC-WTC_000190246

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1824 Lab Group #■ 6854 Filter Type / Filter Area- MCE 3S5 mm- Lab Sample #~ 7 Grid Opening Size: 0 01124

Client Sample #: 09 Area Examined: 0 04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Ci Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/27/02

Analysis Performed By: MARK PEYSAKHOV

GO Structure ] Structure Type Length ID of Structure N oi EDS iNonadb No F B C M >=05 u >=5|j Chrys Amphibole Nonasb AmbigZND No Cooid <5u Elements)

-5

Struct = > iJ 5p >5 I Aspect Ratio Grid acceptance

Positive diffraction pattern properties conforrning to <50% uncissoived filter, overlapped or folded Totals laboratory identification criteria observec <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C I M >5|J /= EDS spectrum conforming to laboratory holes or opaque areas identification criteria obsen/ed Chi7sotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 intersections) Anthophyllite . Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSO = No Structures Detected

CITY_21MC1OO_OO3O88914 NYC-WTC_000190246