NYC-WTC_000215560

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1816 Lah Group ?/: 6S56 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 7 Grid Opening Size: 0.0 i 124 Client Sample #: 10 Area Examined: 0.04496 .mm-

GRID BOX: Magnification: 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/27/02

Analysis Performed By: MARK PEYSAKHOV

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

■ 3

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 EDS spectrum conforming to iaooratory holes or opaque areas identification criteria observed Chi-ysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 5 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite , Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_002872584

NYC-WTC_000215560