NYC-WTC_000228545

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1880 Lab Group #: 7434 Filter Type / Filter Area: MCE 385 rr.m- Lab Sample 6 Grid Opening Size: 0.01124

Client Sample #: 08 Area Examined: 0.04496 mm-

GRIDBOX: Magnification: 20,000 GRID ED: Accelerating Voltage: 100 KeV # GridOpenings: 4 Analysis Date: 4/16/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 'i EDS 'Nonadfc No F B C M >=05 (J >=5p Chrys Amphibole Nonasb AmbigrND No Goord <5iJ ElemeriB) i

J / ---------

Struct = > 0.5p > 5:1 Aspect Ratio Grid aaeptance: ^= Positive diffraction pattern properties confoimlng to <50% undissolved fiUer, overlapped or folded Totals laboratory identifleation criteria observed <10% pardculate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5|j ^= EDS spermjm conforming to laboratory holes or opaque areas Identification criteria observed Chrysotile I AMPHIBOLES^ Amphibole F = Single Fiber Amosite S = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous i Anthophyllite Non-Asbestos C = Cluster (>3 Intersections) Tremolite M = Matrix Actinolite Non-Identified NSD = No Stnstures Detected

CITY_21MC1OO_OO2900963

NYC-WTC_000228545