NYC-WTC_000230355

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters'): 1944 Lab Group #: 6687 Filter Type / Filter Area: MCE 385 Lab Sample #: 21 Grid Opening Size: 0.01124

Client Sample #: 21 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/15/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID'of Structure NorN EDS No (Nonadb F B C M >=05 p >=5p Chrys Amphibole Nonasb Ambig/ND . ZO No Coord <5p Elements)

EE 7 1 J —

Struct = > 0.5p .> 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 >5|j a/= 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 apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Idenrified' Actinolite NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC1OO_OO3389111 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230355