NYC-WTC_000220773

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 7354 Filter Type / Filter Area: MCE 385 min- Lab Sample #: li Grid Opening Size: 0.01124 ClientSam^e #: 11 Area Examined: 0,04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 4/8/02

Analysis Performed By: MARK PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or N EDS (Nonadb No F 8 C M >=05 M >=5|J Chrys Amphibole Nonasb Ambig/NO No Coord <5p Elemerts)

J i <_ ----------------------- 1-----------

-!

d J 1

Struct = > 0 5u >5:1 Aspect Ratio Gnd acceptance: y = Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory idenafication criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded orovenapped grid squares <5% 1 F ■fn~c >5u v= EDS spedrum conforming to laboratory identification crtena obsen/ec holes or opaque areas Chrysotile I —iI--- AMPHIBOLES Amphibole -4— F = Single Fioer Amosite B = Bundle (<3 fibers <1 fioer diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M ; Matnx Non-Identified Actinolite NSD = No Structures Detected

CITY_2IMCl0 0_0 0 0 6 217 0 5 NYC-WTC_000220773