NYC-WTC_000228756

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): Lab Group #; 7625 Filter Type/FUtcr Area: MCE 385 mm^ Lab Sample #: 17 Grid Opening Size: 0.01124 Client Sample #: Area Examined: 0.04496 mm" GRID BOX: x' Magnification: 20 000 GRID H); Accelerating Voltage: 100 KeV' Grid Openings: 4 Analysis Date: 5/4/02

Analysis Performed By: MARK PEVSAKHOV'

GO. Structure Structure Type Length ID of Structure N or V EDS No (Nonadb F B C >=05 M ~~>=5p Chrys Amphibote Nonasb Elemente') j No Coord <5m

2. I

Struct = > 0.5p ■> 5.' I Aspect Ratio Grid acceptance; ; N=i Positive diffraction patlem properties conforming to <50% undissolved fitter, overlapped or folded Totals leboraiory identification criteria observed <10% particulate envisage >50% coverage ate least 20 unfolded arovertepped ged squares <5% F B C M >5u EDS Spectrum conforming to laborator/ holes or opaque areas identificaton criteria observed Chrysotile AMPHieoLss Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite ; Ambiguous C - Cluster {>3 Inierseciions) Antnophyfilte , Non-Asbestos Tremolite ' M ’ Matrix Actinolite Non-Idcntificd NSD = No Structures Detected

CITY_21MC100_002901626

NYC-WTC_000228756