NYC-WTC_000228485

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Viiitiine (liters'): 1920 Lab Group #; • 7346 Filter Type, Filter Area: MCE 385 mm= Lab Sample #:12 Grid (!))'■ iiiiig Size: 0.01124

Client Sample #: 15 Area i-xamined: 0.04496 mm*

GRID BOX; Ail iiiilcation: 20,000 GRID ID; Accelerti i ij <» Voltage: 100 KeV # Grid Openings: 4 Aii.ifvsis Date: 4/6/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length IC f'l f ructure N or v EDS (Nonadb .No F B C M >=05 p >=5|j Chrys AmpriiD . ijonasb Amog/NO No Coord <5p Elements)

;' : 3 - ---- -li-

Struct “ > 0.5)1 > 5; I Aspect Ratio Grid acceptance: V= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laOoratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C ! M ^= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed •.utile "amphiboles li ...le f = Single Fiber Amosite Crocidolite A ; ,is B = Bundle (<3 fibers <1 fiber diameter apart C = Cluster (>3 Intersections) Anthophyllite Non V iOS Tremolite M = Matrix Actinolite Non-l NSD = No Structures Detected

CITY_21MC100_002900734

NYC-WTC_000228485