NYC-WTC_000228217

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 7203 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 2 Grid Opening Size: 0.01124 Client Sample#: 02 Area Examined: 0.04496 mm* GRID BOX: Magnification: 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/25/02

Analysis Performed By: , ROMAN PEYSAKHOV jgp GO. Structure Structure Type Length ID of Structure N or 'Z EDS (Nonadb No F B C M >=5p Chrys Amphibole Nonasb Amtg.MD No .Coord <5p ' Elements)

5^5 if

Struct = > 0.5>x >5:1 Aspect Ratio Grid acceptance: ■4= Positive diffraction pattern properties conforming to <50% undiasolved filter, overlapped or folded Totals laboratory icentification criteria observed <10% particulate coverafle >50% covaraje ate least 20 unfolded or owrtapped grid squares <5% F B C M >5p 7= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile i AMPHIBOLES i Amphibole F = Single Fiber Amosite t B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite ‘ Ambiguous C = Cluster (>3 Intersections) Anthophyllite ; Non-Asbestos Tremolite M = Matrix Actinolite Non-ldentified NSD = No Structures Detected !

CITY_21MC100_006617869 NYC-WTC_000228217