NYC-WTC_000230266

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 6599 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 2 Grid Opening Size: 0.01124 s

Client Sample #: Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRIDED: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/8/02

Analysis Performed By: 1^0 ROMAN PEYSAKHOV

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

< c7

^3

Struct = > 0.5g .>5:1 Aspect Ratio Grid acceptance: x/= 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 untolded or overlapped grid squares <5% F B C M ^5u EDS spectrum conlorming 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 T remolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC1OO_OO3389OO1

SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230266