NYC-WTC_000201778

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 7021 Filter Type/ Filter Area: MCE 385 mm^ Lab Sample #: 14 Grid Opening Size: 0.01124 Client Sample #: 14 Area Examined: 0IG4496 mm^ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: lOOKeV # Grid Openings: 4 Analysis Date: 3/10/02

Analysis Performed By:

GO. Structure Structure Type Length ID of structure N or V EDS No (Nonadb F B C M ->=05 p >=5m- Chrys Amphibole Nonasb Ambig/ND Elements) No Coord <5m

^<7

Struct = > 0.5|u > 5:1 Aspect Ratio Grid acceptance: \l= Positive diffraction pattern properties conforming to <50% undissoived filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

4= EDS spectrum conforming to laboratory least 20 unfolced or overlapped grid squares <5% holes or opaque areas F B c M >5r ■

identification criteria, observed Chrysotile t A.WHIBOLES : Amphibole F = Sngle Fiber : ff Amosite 1 B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite I Ambiguous C = Cluster (>3 Intersections) Anthoptiyllite i Non-Asbestos Tremolite M = Matrix r Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003269087

NYC-WTC_000201778