NYC-WTC_000193561

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Vglume (liters); 1960 ■Lab Group #: 7316 Filter Type / Filter Area; MCE 385 mm" Lab Sample #: 15 Grid Opening Size; 0.01124 Client Sample #: 15 Area Examined: 0.04496 mm" GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage; 100 KeV # Grid Openings: 4 Analysis Date: 4/3/02

Analysis Performed By: MARK PEYSAKHOV

GO, Structure Structure Type Length ID of Structure N or v EDS (Nonadb No F B C M >=05 M Chrys Amphibole Nonasb AmbigIND No Coord <5p Elements)

____ g

Struct = > 0.5n >5:1 Aspect Ratio Grid acceptance: ^/= Positive diffraction pattern properties conforming to <50% undissolved filter, bveriapped orfolded Totals _ _______________ laboratory particulate coverage >50% coverage ate <10%observed identification criteria least 20 unfolded or overlapped grid squares <5% F B C M >5m ^/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile ; AMPHIBOLES : Amphibole F = Single Fiber, Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite > Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite । NSD = No Structures Detected

CITY_21MC100_003095121

NYC-WTC_000193561