TEM Asbestos air sample results, NYC BOE, Feb 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: m'C BOE Volume (liters): 1920 Lab Group #: 6619 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 5 Grid Opening Size: 0.01124 Client Sample #: 05 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 2/10/02

Analysis Performed By: ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure N or 7 EDS (Nonadb | No F B C M >=05 M Chrys Amphibole Nonasb AmOig/ND No Coord <5|J Elements) 1

5^ Z. 77W V 1/

73

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: V= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory idenfificalior criteria observed <10% particulate coverage >50% coverage ate

V= EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% fTb C M >5iJ holes or opaque areas __ I__ identification criteria observed Chrysotile i 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, CITY_21MC100_003467837 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000180996