NYC-WTC_000213766

NYC 9/11 Public Portal Document

TEMAsbestosJairXjCountSheet Client Name: NYC BOE Volume (liters): 1816 Lab Group #: 7922 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 16 Grid Opening Size: 0.01124

Client Sample #: 18 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/1/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or V EDS (Nonadb No F B C M >=05 p :>=5tJ Ctirys Amphibole Nofiasb Ambig/ND No Coord <5p Elements)

>•

^<=5? -z-i------------ c.

Struct = > 0,5p >5:1 Aspect Ratio Grid acceptance; 'J= Positive diffraction pattern properties conforming to <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% F B C M >5u '1= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile i AMPHIBOLES j Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_002869552

NYC-WTC_000213766