NYC-WTC_000228543

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE j, Volume (liters): 1800 Lab Group #.• 7434 Filter Type / Filter Area: MCE 33? Lab Sample #: I Grid Opening Size: 0 01124

Client Sample #: 03 Area Examined: 0.04496 rrm-

GRID BOX: Magnification: 20,000 GRID n>: <?• .fe"" Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/16^02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Nor \ i =DS No >=05 p ; , ■■ 3 (Nonacb F 8 C M Chrys Amphibole Nonasb Ambig/ND i tiemen is) ; No Coord <5p

g-

Struct = > O.Sp >5:1 Aspect Ratio Grid acceptance: 4= Posifive diffraction pattern properties conforming to <50% undiaaotved Mer. ovartapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C M I >5^ 4= EDS spectrum oonfarniing to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single F.ber Amosite S = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster >3 Intersections) i Anthophyllite Non-Asbestos , Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002900958

NYC-WTC_000228543