NYC-WTC_000229153

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume flitersi: 1808 Lab Group #: 7922 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 12 Grid Opening Size: 0.01124 Client Sample #; 14 Area Examined: 0.04496 mrn^ GRIP BOX: Magnification: 20 000 GRID ID: Accelerating Voltage; 100 KeV # Grid Openings: 4 Analysis Pate; 6/1/02

Analysis Performed By: MARX PEYSAKHOV

GO. Structure Structure Type Length ID of Slnjriure Nor v EDS No (Naiadb F B C M >’05(7 Chrys Ampfiibote ftonasb A?r*jg/ND No i Coord <5u Etenents)

Struct “ > 0.5p .> 5:1 Aspect Ratio Grid acceptance. V' Positive diflraction pattern properties conforming to <50% undissoived fitter, ovedapped or folded Totals Oboratwy idemification crtterla observed <10% particulate coverage >50% coverage ate least 20 unfoWed or overlapped grid souares <5% F B C M >5p '/= EOS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile rAMPHIBOLES Amphibole F = Single Fiber i Amosite B = Bundle (<3 libers <1 fiber diameter apart I Crocidolite Ambiguous C = Cluster (>3 intersections) ; Anthophyllite Non-Asbestos i Tremolite M = Matrix I Actinolite Non-ldentified NSD = No Structures Oetected

CITY_21MC100_002902293

NYC-WTC_000229153