NYC-WTC_000201977

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 ;/ Lab Group #: 7215 rT Filter Type / Filter Area; MCE 385 imm^ Lab Sample #: 9 Grid Opening Size: 0.01124 . Client Sample #: 09 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/26/02

Analysis Performed By: MARK PEYSAKHOV

•GO. Structure Structure Type Length ID of Structure N or 4 EDS No (Nonadb F B C W >=05 p ■ >=5iJ Ghrys Amphibole Nonasb Ambig/ND Elements) • Noi Coord <5p

i

t

- I

' 'Struct = > 0.5g > 5:! Aspect Ratio Grid acceptance:

V= Positive d ffraction pattern properties conforming to <50% undissoived filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

y= EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% holes or opaque areas E B e M. I >5p identification criteria observed: I < . Chrysotile i ■A.VtPHJBOLES i Amphibole ■ r = Single Fiber' Amosite B = Bundis (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) t Anthophyllite. s Non-Asbestos I T remolite i M = Matrix I N on-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_011275918

NYC-WTC_000201977