NYC-WTC_000202002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7195 Filter Type / Filter Area: MCE 385 Lab Sample #: 16 Grid Opening Size: 0.Q1124 Client Sample #: 16 Area Examined: 0.04496 mm* GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/24/Q2

Analysis Performed By; A MARK PEYSAKHOV

GO, Structure Structure Type Length ID of structure N or V EDS ' (Nonadb .No F LB c M >=05 p T Chrys Amohibole Nonasb Ambig/ND Elements) Slo Coord <5j

Struct = > 0.5(1 > 5:1 Aspect Ratio / Grid acceptance; i 1

N=: Positive pittraction pattern properties contormino 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 >5tJ , N= EDS spectrum contorming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES 1 /Amphibole E - Single Fiber , Amosite , B = Bundle (<3 fibers <1fiber diamete," apart Crocidolite Ambiguous C = Cluster (>3 Intersections) 1 1 Anthophyllite Non-Asbestos ; Tremolite M = Matrix , i No'n-Identified : Actinolite NSD =,No Structures Detected

CITY_21MC100_011275969

NYC-WTC_000202002