TEM asbestos air count sheet, PS 89M, Jan 18 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: OTC BOE Volume (liters): 1920 Lab Group #: 6363 Filter Type / Filter Area: MGE 385 mm^ Lab Sample #: Grid Opening Size: 0.01124 Client Sample #: 05 Area Examined: 0.04496 mm- GRID BOX: TLk-/ Magnitication: 20,000 GRID ID: zZ, Accelerating Voltage: 100 KeV # Grid Openings: Analysis Date: 1/18/02

Analysis Performed By: ROMAN PEYSAKHOV

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

(f S3: tf

ZT — r

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

EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% Tf B C M >5U holes or opaque areas identification criteria observed Chrysotile ; AMPHIBOLES I Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CONFIDENTIAL, SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008 CITY_21 MC100_014660151

NYC-WTC_000174748