NYC-WTC_000227694

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume filters): 1928 Lab Group #: 7351 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 6 Grid Opening Size: 0.01124

Client Sample #: 08 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/7/02

Analysis Performed By: MICHAEL GORYCKl

GO. Structure Structure Type Length ID of Structure N or 7 EDS No (Nonadb F B C M >=05 p Chrys Amphibole Nonasb Ambig/ND lAZ/t No Cool'd <5m Elements) ' ' ZO5Z 77^ •z

4-1 4

Struct = > 0,Op >5:1 Aspect Ratio Grid acceptance: vi'= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totajs laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C I M >5u /= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrvsotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 liber diameter apan Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matnx Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002899199

NYC-WTC_000227694