TEM asbestos air sample results, NYC BOE, Feb 2002

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Ctient Yame: NYC BOE Volume /liters): 1S16 Lab Group #: 6648 Filter Type ! Filter Area: MCE 385 mm- Lab Sample #: 4 Grid Opening Size: 0.01124 Client Sample #: 07 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/12/02

Analysis Performed By: ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure NorN EDS (Nonadb No F 3 c M >=05 |J >=5iJ Ctirys Amphibole Nonasb Ambig/ND Elements) . No Coord <5p

Cf {/

Struct = > 0.5u ,> 5:1 Aspect Ratio Grid acceptance; '/= Positive diffraction pattern procerties conforming to <50% undissolved filter, oi/erlapped or folded Totals <10% particulate coverage >50% coverage ate loDoratory identification criteria obsen/ed least 20 unfolded oroverlappsfl and squares <5% f I F I B i C M j >5u EOS spectrum conforming to laboratory' holes or opaque areas t identification criteria observed Chrvsotile I I I ■ AMPHIBOLES Amphibole I i ' i r = aingie Fiber Amosite E = Sundie (<3 fibers <1 fiber diameter aoart Crocidolite Ambiguous i i i ' • C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos I ) i I I Tremolite M = Matrix i Non-Identified I Actinolite i i NSC = No Structures Detected

CITY_21MC100_003103145

NYC-WTC_000183763