NYC-WTC_000228769

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volnme (liters): 1800 Lab Group #; 7646 Filter Type/Eater Area: MCE 385 mm’ Lab Sample #: I Grid Opening Size: 0.01124 Client Sample #: 03 Area Examined: 0.04496 GRIP BOX: MagnificatioH: 20 000 GRID ID -. Acceleratiog Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/5/02

Analysis Performed By: MARKPEYSAKHOV

: GO. S&ucture Structure Type Length 10 of structure N or v EDS No (Nonadb F 3 C M >=05 )j :>=5p Chrys Amohiboie Norast) Ambig/ND \ No Coord <5m ESements)

' 3

Struct = > 0.5> 5:1 Aspect Ratio Grid acceptanra: n/= Posifive diffraction patten, properties confoming to undMoived mar, overtopped or folded Totals Iaborato7 identificadon eriteria observed <10% partrculate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C M i ’bp V= EDS spectrum conicrmmg s laiwratory doles or opaque areas identification criteria observed Chrysotile "amphiboles i Amphibole F = Single Fiber AmosiSa B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) j Anthophyllite j Noth Asbestos Tremolite I M = Matrix Non-Identified Actinolite NSD - No Slruciures Delected

CITY_21MC100_002901658

NYC-WTC_000228769