NYC-WTC_000228910

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; NYC BOE Volume niters): 1816 Lab Group #; 7741 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 7 Grid Opening Size: 0.01124 ■Client Sample#: 09 Area Examined: 0.04496 mm’ GRID BOX: Magnification: 20 000 GRID ID: Accekrating Voltage: 100 KeV # Grid Openings: 4 Analysts Date: 5/14/02

Analysis Performed By: MARK PEYSAKHOV

60. Structure Structure Type Length ID of structure N or 7 EOS No (Notiadb F B C M >=05 p >=5p Chrys Aitiptiawie Nonasb AmbigW Elemenis) No Coord <5m

J Z

1

Struct = > 0.5^i > 5: t Aspect Ratio Grid acceptance: Positive diffraction pattern properties oonfontiing to <50% undssotved fitter, overtapped or lowed Totals < 10% parficulpte coverage *50% coverage ate latoatory ictenflficattan crileria observed least 20 unfolded or overlapped grid squares <5% F B C M >5p ' ■J = EDS spectrnm conforming to laboratory holes or opaque areas identification criteria observed Clirysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber aiameterapan Crocidolite Ambiguous C = Cluster (>3 intersectionsl Anthof^ytlite Non-Asbesios T remblite M = Matrix Actinolite Non-Identified NED = No Struciures Detected

CITY_21MC100_002901880

NYC-WTC_000228910