TEM asbestos air count sheet, PS 89M, Jan 18 2002

NYC 9/11 Public Portal Document

TEM Asbestos (airVCount Sheet Client Name: NYC BOE Volume (liters): 1944 Lab Group #: 6363 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: Grid Opening Size: 0.01124 Client Sample #: 07 Area Examined: 0.04496 mm- Magnification: GRID BOX: ZAZ- 20,000 GRID ID: t/TYZv./ Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 1/18/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length' ID of Structure N or 7 EDS No (Nonadfa F B C >=05 u ■Chrys Amphibole Nonasb Ambig/ND No Coord <:5u Elements)

7g7 u Q H //J

Struct => 0.5p >5:l Aspect Ratio Grid acceptance: V= Positive diffraction pattern properties conforming to <50% urdissolved 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 I C M >5p EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite i B = Bundle (<3 fibers <1 fiber ciameter apart Crocidolite i Ambiguous C = Cluster (>3 Intersections) , Antboptiyllite Nou-Asbestos Tremolite i M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CONFIDENTIAL, SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008 CITY_21 MC100_014660153

NYC-WTC_000174750