NYC-WTC_000229607

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: Warren & Panzer Volume (liters): 1350 Lab Group #: 8221 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 7 Grid Opening Size: 0.01124 Client Sample #: 074 Area Examined: 0.06744 mm’ GRID BOX: Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 6 Analysis Date: 6/22/02

Analysis Performed By: MARK PEYSAKHOV

GO, Structure Structure Type ’Length ID of Structure N or 4 EDS No (Nonadb F B C M >=05 p , >=5|J Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

J

Struct = > 0,5p > 5:1 Aspect Ratio Grid acceptance: 4= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% partioulate-coverage >50% coverage ate least20 unfolded oroverlapped grid squares <5% I F B C M I >5lJ 4= EDS spectrum oonforrriing 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 ■ J M = Matrix Non-ldentified Actinolite NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC100_003410147

SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000229608