NYC-WTC_000207539

NYC 9/11 Public Portal Document

TEM Asbestos (airVCount Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 8162 . Filter Type / Filter Area: MCE 385 mm- Lab Sample 7’ Grid Opening Size: 0.G1124

Client Sample #: 7 Area Examined: ,0.04496 mm^ .

GRID BOX: Magnification: 20-000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 6/18/02 .

Analysis Performed By: . - - . MARK PEYSAKHOy.

GO., Structure Structure Type ■ Length ID of Structure NorN EDS No (Nonadb F B C M >=05 p • r :>=5p.. . Chrys Amphibole Nonasb Ambig/ND 3 Jno’ Coord <5p Elements)

z-O -

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved filler, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overiapped grid squares <5% F B C M >5p . EDS spectrum conforming to laboratory holes or opaque areas ' identification criteria observed Chrysotile lAMPHlBOLES Amphibole F = Single Fiber I Amosite 8 =.Bundle (<3 fibers <1 fiber diameter apart' ! Crocidolite Ambiguous C = Cluster (>3 Intersections) i Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected ■

CITY_21MC100_003015376

NYC-WTC_000207539