NYC-WTC_000200394

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: WC BOE Volume (liters): 1840 Lab Group #: 7997 Filter Tvpe / Filter Area: MCE 385 Lab Sample #: 11 Grid Opening Size: 0.01124 Client Sample #: 11 Area Examined: 0.04496 mm" GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/8/02

Analysis Performed By: MARKPEYSAKHOV

GO Structure Structure Type Length ID of Structure N or V EDS - (Nonadb No F B C M >=05 pi ■>=5p Chrys Airphibote Nonasb Ambig/ND No I Coord <6m , Elements)

2 J

i'

Struct = > 05n> 5:1 Aspect Ratio Grid acceptance: , V= Positive diffraction pattern properties conforming to undissolved filter, overlapped or folded Totals r Iaborato7 identification criteria observed ri <10% partculate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <6% F B C M >5u i ^= EDS spectrum conforming to laborator)' holes or opaque areas > Chrysotile AMPHtBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite . V! = Matrix Non-Identified Actinolite ' NSD = No Structures Detected

CITY_21MC100_011274861

NYC-WTC_000200404