NYC-WTC_000230051

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1952 Lab Group #: 7185 Filter Type / Filter Area: MCE 3S5mm- Lab Sample 14 Grid Opening Size: 0.01124

Client Sample #: 14 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 3/23/02

Analysis Performed By: ROMAN PEYSAKHOV

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

Struct = > 0.5g >5:1 Aspect Ratio Grid acceptance:

V = Positive diffraction pattern properties conforming to <50% undissolved filter, ovedapped 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 >5m >/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile . AMPHIBOLES ! Amphibole F = Single Fiber Amosite 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 intersections) • Anthophyllite Non-Asbestos i Tremolite M = Matnx Non-Identified Actinolite NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC100_003388669 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230051