NYC-WTC_000212386

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: TsTfC BOE Volume (liters): 1920 Lab Group #: 7298 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 10 Grid Opening Size: 0.01124 C lient Sample #: 10 Area Examined: 0.04496

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV Analysis Date: 4/2/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or EDS No (Nonadb F B C M «05|j >=5(j Chrys Amphitrole Nonasb Ambig/ND Coord <5p Elements)

zxlS-O’

r-F A

Struct == > 0.5(1 .> 5;1 Aspect Ratio Grid aaeptance: 'I - Positive diffraction pattern pro|)erties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u v = EOS spectrum conforming io laboratory holes or opaque areas identification critena observed Chrysotile AMPHIBOLES Amphibole F - Single Fiber Amosite B - Buncle (<3 fibers <1 fiber d ameter apart Crocidolite Ambiguous C = Cluster (>3 intersections) Anthophyllite Non-Asbestos T remolite M = Matrix Non-Identified Actinolite N5D = No Structures Detected

CITY_21MC100_002866312

NYC-WTC_000212386