NYC-WTC_000189240

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lah Group #: 7182 Filter Type / Filter Area: MCE 385 mm* Lab Sample #: 6 Grid Opening Size: 0.01124 Client Sample #: 06 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/23/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. ■ Structure Structure Type Length ID of Structure NorN EDS No (Nonadb F B C M >=05 (J :>=5pi Chrys Amphibole Nonasb Ambig/ND No Coord <5o Elements)

74 4^2 V 4 7^

I III Struct - >0,511 >5:1 Aspect Ratio Grid acceptance: ■/= Positive diffraction pattern properties 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 >5p 7= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile 'AMhilBOLES : 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-ldentificd Actinolite NSD = No Structures Detected

CITY_21MC100_003084840

NYC-WTC_000189247