NYC-WTC_000228956

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; m'C BOE Volume niters): 1824 Lab Group #; 7778 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 16 Grid Opening Size: 0.01124 ClfcBt Sample iS Area Examined: 0.04496 mm"

GRIP BOX- Magnification; 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/18/02

Analysis Performed By: MARK PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or -J EDS I No (Nonadb ; No Coord F B cTw >=05 u >=5p Chrys Amphibole Nonasb AmbigyND Elentents) j <Sp

t

Struct => C.5p > 5:1 Aspect Ratio Grid acceptance: 'J = Positive diffraction pattern properties conforming to <50% undissolved filter, ouertapped or folded Totals laboratory identification criteria observed <10% psrScuiais coversfis >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C M >5p EDS specbum conforming to laboratory holes or opaoue areas identification cnteha observed Chrysotile AMPHI3QLES Amphibole F = Single Fiber Amosite 0 = Bundle (<’ fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intereections) Anthophyllite Non-Asbestos Tremofite M = Matre Actinolite Non-ldentified NSD = No Structures Detected

CITY_21MC100_002901961

NYC-WTC_000228956