NYC-WTC_000230394

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1936 Lab Group #: 7204 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 21 Grid Opening Size: 0.01124 Client Sample #: 21 Area Examined: 0.04496 mm- GRID BOX: 977- Magnificiation: 20,000 GRID ID: Acceleratin2 Voltage: 100 KeV # Grid Openings: 4 . Analysis Date: 3/25/02

Analysis Performed By: ROMAN PEYSAKHOV

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

Lg-C 5

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.unlolded or overiapped grid squares <5% F B C M >5|J '/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile i AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) - Anthophyllite Non-Asbestos Tremolite I - HZ = Matrix Non-ldentified Actinolite NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC1OO_OO3389198 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230394