TEM Asbestos Air Sample Results, NYC DOE, Aug 2002

NYC 9/11 Public Portal Document

TEMAsbestosJair) Count Sheet Client Name: NYC BOE Volume filters): 1928 J.ah Group #: 8760 Kilter Type / Filter Area: MCE 385 mm^ Lab Sample #: 5 GridOpeningSize: 0.01124

Client Sample #: 5 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 8/25/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Nory EDS (Nonadb No F 8 C M >=5lJ Chrys Amphibole Nonasb Ambig/ND N.o Coord <5p Elements)

A J 1/ 1

.Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: 'J- 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 overiapped grid squares <5% F B C M >5|J EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole ■F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apan Crocidolite Ambiguous e = Cluster {>3 Intersections) Anthophyllite Non-Asbestos Tremolite M - Matrix Non-Idennfied Actinolite NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC100_003430658 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000175218