NYC-WTC_000228757

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume filters): 1800 Lab Group #: 7636 Filter Type / Filter Area: MCE 385 mm= Lab Sample #: 1 Grid Opening Size: 0.01124 Client Sample #: 04 Area Examined: 104496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/4/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Stnjctiire Nori EDS No Ambig/ND (NaiaJb F B C M >=5p Chrys Amphtofe Nonasb / .JI No Coord Elements)

s I/" IL

Struct = >0.5n >5:1 Aspect Ratio Grid acceptance: < = Positive diffraction pattern properties conforming to undiss^ filter, Of folded Totals laboratory identification critena observed ’ <10% particulate ccverage >50% coverage ate

i/= EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% holes or opaque areas F B c M >5u

identification criteria observed Chrysotile AMPHIBOLES ~i Amphibole F = Single Fiber Amosite B - Bundle {<3 fibers <1 fiber diameser apari Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolita I M = Matrix Non-Identified Actinolite NSO - No Structures Detected

CITY_21MC100_002901634

NYC-WTC_000228757