NYC-WTC_000230437

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; NYC BOE Volume (liters): 1840 Lab Group #: 7033 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 8 Grid Opening Size: 0.01124 Client Sample #: 10 Area Examined: 0.04496 mnr^

GRID BOX: Magnification: 20,000 GRID ID; Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 3/12/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or v EDS No (Nonadb F 8 C M >=05 M >=5p Chrys Amphibole Nonasb Ambtg/ND Elements) I No Coord <S|J

4 VS 6

Struct->0.5n >5:1 Aspect Ratio Grid acceptance: yi- 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% i F j B j C j M pSp EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile , I I

F = Single Fiber AMPHIBOLES Amphibole i 1—F Amosite 8 = Bundle (<3 libers <1 fiber diameter apart Crocidolite Ambiguous | 1 ! C = Cluster (>3 Intersections) Anthophyllite I Non-Asbestos : Tremolite M = Matrix i Son-Identified ‘ Actinolite I____ ... ....! NSO = No Structures Detected

CONFIDENTIAL, CITY_21MC100_003389243 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230437