NYC-WTC_000230102

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 7216 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 4 Grid Opening Size: 0.01124 Client Sample #: 4 Area Examined: 0.04496 GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/26/02

Analysis Performed By: MARK PEYSAKHOV

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

J >5^ >■

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 >5p EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES ! Amphibole F = Single Fiber Amosite 8 = Sundie (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous I Anthophyllite ' C = Cluster (>3 Intersections) Non-Asbestos M = Matrix T remolite Actinolite Non-ldentified NSD = No Structures Detected

CONFIDENTIAL, CITy_21MC100_003388746 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230102