TEM asbestos air count sheet, PS 89M, Jan 12 2002

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1936 Lab Group #: 6310 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 4 Grid Opening Size: 0.01124 Client Sample #: 05 Area Examined: 0.04496 nirn* GRID BOX: Magnification: 20,000 ■ GRID ID: Accelerating Voltage: TOO KeV # Grid Openings: 4 Analysis Date: 1/12/02

Analysis Performed By: MARK PEYSAKHOV

■ GO. Structure Structure Type Length ID of Structure N or T EDS (Nonadb No F bTc M >=06 u >=5|J Chrys Amphibole Nonasb ‘ Ambig/ND No Coord <5p Elements) f

Struct = > 0.5g >5:1 Aspect Ratio Grid acceptance: T= Positive diffraction pattern properties conforming Io <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% B C M >5u V- EDS SDectrum conforming ro laboratory holes or opaque areas P identification criterio observed Clnrysotile 'amphiboles'^ Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos I Tremolite M = Matrix Non-Identified I Actinolite NSD = No Structures Detected

CONFIDENTIAL, SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008 CITY_21MC100_014660126

NYC-WTC_000174745