NYC-WTC_000228880

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume Piters); 1800 Lab Group #: 7723 Filter Type / Filter Area: MCE 3S5 ram- Lab Sample #: 9 Grid Opening Size: 0.01124 Client Sample #; 11 Area Examined: 0.04496 mm^ GRID BOX: Magnification; 20 000 GRIP IP: Accelerating Voltage: 100 K.eV # Grid Openings: 4 Analysis Pate: 5/12/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Ty Length ID of Structure N or v EDS (NonadS No F B C "M >=05 M >=5m Chrys Amptiiboie Monasb Afflbig/ND No Coord <5m eiententsj i

Struct = > O Sp >5:1 Aspect Ratio Grid acceptance: 4 = Positive diffraciion pattern properties conforming to <50% undissrfved Ster, overlapped or folded Totals laboratory identification criteria observed <‘ 0% pareculate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M ! >5u EDS soectfum conforming to laboratory holes Of opaque areas identification criteria observed Chrysotile A.VtPHjBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C ” Clustef !>3 Intersections) Anthoptiyilite Non-Asbestos I Treirtolife M Ma:r> Actinolite Non-Identified NSD = No SUuctures Detected

CITY_21MC100_002901834

NYC-WTC_000228880