NYC-WTC_000228133

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE 'Volume (liters): 1840 Lab Group #: 7071 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 16 Grid Opening Size: 0.01124 Client Sample #: 16 Area Examined; 0.04496

GRID BOX; MaanificaUon: 20,000 GRID ID; 15 Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/14/02

Analysis Performed By: MARKPEYSAKHOV

■ GO. Structure’ Structure Type Length ID of Structure N or y EDS No (Nonadb F B C M >=05 y >=5p Chrys Amphibole Nonasb Ambig/ND Elements) i No I .Coord <5y

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

CITY_21MC100_006617637

NYC-WTC_000228133