TEM Asbestos air sample results, NYC BOE, Dec 2001

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1944 Lab Group #: 6066 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 14 Grid Opening Size: 0.01124

Client Sample #: 14 Area Examined: 0.04496 mm*

GRID BOX: Magnification: 20,000 • GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/9/01

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length iD of Structure N or V EDS (Nonadb No F B C M ^oEp i>=5(j Chrys Amphibole Nonasb Ambig/ND Mo Coord <5p Elements)

j: z -----------------

T

Struct = > 0.5u > 5: i Aspect Ratio Grid acceptance: 4= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification crite.ia observed <10% particulate coverage >50% coverage ate least 20 unfolded oroveriapped grid squares <5% F B C M >5lJ \= EDS spectrum contorming to laboratoiy holes or opaque areas Identification cnteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber ! Amosite i B = Bundle (<3 fibers <: fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite MSC - No Structures Detected

CITY_21MC100_003104647

NYC-WTC_000184110