NYC-WTC_000218314

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE \ olume (liters): 1020 Lab Group #: 6940 Filter Type / Filter Area: MCE 3S5 :t Lab Sample #: 14 Grid Opening Size: 0.01 124 Client Sample #: 14 Area Examined: 0,04496 mm-

GRID BOX: Magnilication: 20,000 GRID ID: Accelerating Voltage: 100 Ke\' # Grid Openings: 4 Analysis Datc 3.'5/02

Analysis Performed By: MARK. PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 0 EDS No (iMonadb F B C M >=05 p Chrys Amobiboie i Nonasb I Ambio'ND I No Coord <5p i I Eiemenlsl

3

Struct =>0 5p :>5:l Aspect Ratio Grid acceptance: = Positive diffraction pattern properties conforming Io <50% undissolved filler, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% r B i C • M i F N= EDS spectrum conforming to laboratory boles or opaque areas 1 identification criteria observed Chiysoule AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 liber diameter apart Crocidolite Ambiguous i

C = Cluster (>3 Intersections) Anthophyllite Non-Asbesios i Tremolite M = Matrix i Nun4dentil'ied i Actinolite NSD = No Structures Detected

CITY_21MC100_000466281 NYC-WTC_000218314