NYC-WTC_000202512

NYC 9/11 Public Portal Document

•V TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 8810 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 12 Grid Opening Size: 0.01124 Client Sample #: 12 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20,000 GRJD ID: MT Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 9/5/02

Analysis Performed By; MARK PEYSAKHOV

• GO, Structure Structure Type Length ID of Structure N or v EDS (Nonadb No F 8 C M >=05 M >=5p Chrys Amphibole Nonasb Anbig/ND No Coord <5iJ Elements)

A 9 Ji

Struct = > (),5|j >5:1 Aspect Ratio Grid acceptance:

\= Pcsitive diffraction pattern properties conforming to <50% undissolved filter, overlappeo or folded Totals laboratory identification criteria observed <10% particulate coverage >60% coverage ate least 20 unfolded or overlapped grid squares <5% F B L M I >5p V = 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 e = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_011276823

NYC-WTC_000202512