TEM Asbestos air sample results, WC BOE, Nov 2001

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: WC BOE Volume (liters): 1952 Lab Group #: 5904 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 7 Grid Opening Size: 0.01124

Client Sample #: 7 Area Examined: 0.04496 mm"

GRID BOX: JZSH Magnification: 20,000 GRID ID: 7/16 Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/17/01

Analysis Performed By: A?

MICHAEL GORYCKl

GO. Structure Structure Type Length ID of Structure N or 9 EDS (Nonadb No F B C M ■=05u >=5|j Chrys Amphiboie NonasD Ambig/ND No Coord <5(j Elements)

A.. ?//. 1/

. 3 M-f If __________

I i Struct = > 0.5p _> 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissoived filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F I B I C M >5u EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed ; .AMPHIBOLES ; Chrysotile Amphibole i n r F = Single Fiber Amosite I B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite i Ambiguous I C = Cluster (>3 Intersections) Anthophyllite Non-Asbesros 1 Tremolite M = Matnx Non-Identified i Actinolite .1 NSD = No Structures Detected

CITY_21MC100_0 03106503

NYC-WTC_000185400