NYC-WTC_000230438

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters’): 1808 Lab Group #: 7033 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 9 Grid Opening Size: 0.01124 Client Sample #: 11 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV Analysis Date: 3/12/02

Analysis Performed By: ROMAN PEYSAKHOV

GO^ Structure Structure Type Length ID of Structure N or V EDS ! No (Nonadb i F B C M >=05 p >=5p Chrys Amphibole Nonasb Ambig/ND No Coord Elements) j *SM

z /t

Struct = >0.5p >5:i Aspect Ratio Grid acceptance: Positiiie diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ale teast 20 unfolded or overlapped grid squares <5% F i B C M I >5m v= EDS spectrum oonforming to laboratory holes or opaque areas identification cnteria observed Chrysotile ' AMPHIBOLES 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 Actinolite Non-Identified NSD - No Structures Detected

CONFIDENTIAL, CITY_21MC100_003389244 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230438