TEM Asbestos Air Sample Results, NYC BOE, June 2002

NYC 9/11 Public Portal Document

TEMAsbestosfairlCmintSh^ Client Name: NYC BOE Volume (liters): 1816 Lab Group it: 8136 Filter Type / Filter Area: MCE 385 mm^ Lab Sample H: 4 Grid Opening Size: 0.01124 Client Sample it: 06 Area Examined: 0.04496

GRID BOX: Magnification: 20 GRID IP: r Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/17/02

Analysis Performed By: MARK PEYSAKHOV

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

27 Jf'

Struct = > 0.5p > 5; f Aspect Ratio Grid acceptance. ^= Positive diffraction pattern properties conforming to "50% undissolved filter, overlap^ or folded Totals ___ laboratory identification -u______ criteria observedu <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5|J EDS spectrum conforming 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 M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CONFIDENTIAL, SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT, 2008 -003461598

NYC-VVTC_000179774