TEM Asbestos air sample results, NYC BOE, Jan 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet ClieiitJ\£UTr^ NYC BOE Volume (liters): 1920 Lab Group #: 6479 Filter Type Filter Area: MCE 385 mm’ Lab Sample #: 7 Grid Opening Size: 0.01124 Client Sample #: 7 .Area Examined: 0.04496 mm-

GRID BOX: 77 5L Masnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 1/27/02

Analysis Performed By; ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or 7 EDS (Nonadb No F B i C M >=05 p >=5|j Chrys Amphibole Nonasb Ambig/ND No Coord <51J Elements)

LXZ-2^3 //

by -

Struct = > U.5p >5:1 Aspect Ratio Grid acceptance:

n/= Positive dilfraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F B C M ■/= EDS speciriirn conforming to laboratory holes or opaque areas identification criieria observed Chrysotile AMPHIBOLES Amphibole F = Single Finer Amosite B = Bundle (<3 fioers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC100_003467573 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000180813