NYC-WTC_000201259

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 7325 Filter Type / Filter Area: MCE 385 nW Lab Sample#: 1 Grid Opening Size: 0.01124

Client Sample #: 01 Area Examined: G.04496 mm-

GRID BOX: Magnification: 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/4/02

.Analysis Performed Ry: MARK PEYSAKHOV

GO. Structure ■Structure I ype Length ID of Structure N or 7 . EDS {Nonacb -F- -M- >e06u -:>=5p - Chrys Amphibole Nonasb__ . Ambig/ND No : Coord <5iJ ‘ Elements)

Struct = > 0.5(1 > 5:1 Aspect Ratio Grid acceptance: 7= Positive diffraction pattern oroperties conforming to <50% undissolved filer, overiapped or folded ' Totals laboratory identification criteria observed <10% particuate coverage >50% coverage ate least 20 unfolded.croverlapped grid squares <5% F d B C M >5u 7= EOS spectrum conforming to labcraton/ holes or opacus areas identification criteria observed Clu’ysotiis : AMPHIBOLES Amphibole F = Single Fiber Amosits B = Bundis {<3 fioers <1 fiber diameter apart Crocidolite ‘ Ambiguous' C = Cluster (>3 Intersections) Anthophyllite Noh-Asbestos Tremolite M < Matrix Non-Identified Actinolite f\SD = No Structures Detected

CITY_21MC100_011275532

NYC-WTC_000201259