NYC-WTC_000229905

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1848 Lab Group #: 8038 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 5 Grid Opening Size; 0.01124 Client Sample #: 07 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/10/02

Analysis Performed By: ROMAN PEYSAKHOV

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

2

Struct = > 0.5|x > 5;! Aspect Ratio Grid acceptance: 'J= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criterta observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5y 7= EDS spectrum conforming to laboratory holes or opaque areas identilication criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 8 = Bundle {<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) I Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC100_003388474 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000229905