NYC-WTC_000222600

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count SI eet Client Name: NYC BOI- N’niume (liters): 1816 Lab Group #: 7539 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 15 Grid (?-)r :iing Size: 0.01124 Client Sample #: 18 Arc:; r.xaminetl: 0.04496 mm^

GRID BOX: icafioii: 20,000 GRID ID: Acccivr _ voltage: 100 KeV # Grid Openings: 4 A U.S Date: 4/25/02

Analysi.s I'ci formed By: MARK PEMSAKHOV

GO. Structure ; St'’uc;ure Type | Length .D..-’.:...jc;.ire N or 9 EDS (Nonadb No F ■■ f C M ■ >=05 p ; =5;j Chrys Amphir., ■ .lonasb Ambig/ND , No . Coord <5p Elements) I i

' : -7

1 !'

I

Struct = >0 5p >5:1 Aspect Nutii Grid acceptance: '/= Positive diffraction pattern properies cc nfe 'iiing to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria obser .ed < I u% particulate covei ace .5 i% coverage ate least 20 unfolded or overlapned gric squares <5% ' F B C M >5P 4= EDS spectrum conforming to labcrator/ holes or opaque areas l__ identification criteria observed (J lie .AMPHIBOLES F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter a pan Crocidolite us .

C = Cluster (>3 Intersections) Anthophyllite Nr. U.S ' Tremolite M = Matrix Actinolite NSD = No Structures Detected

CITY_21MC100_002918233

NYC-WTC_000222600