NYC-WTC_000212472

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NTYC BOE Volume (liters): 1920 I ab Group #: ■’457 Filter Type / Filter Area: MCE 385 mm* L ab Sample #: i2 Grid Opening Size: 0.01124

£ lient Sample #: 12 Area Examined: 0 04496 mm-

C;RID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 4/'18/02

Analysis Performed By: MARK PEYSAKHOV

GO, Structure Structure Type Length ID of structure N or v EDS No (Nonadb F B C M >=05 u >=5p Chrys Amphibole Nonasb AmOig/ND No Coord j <5p Elements) --------------------1’

S truct = > 0.5p >5:1 Aspect Ratio Grid acceptance: ' = Posi'ive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals feiooratoy identification cnteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p ' = EDS spectrum conforming to laboratory holes or opaque areas klentification criteria observed Chrysotile AMPHIBOLES Amphibole f = Single Fiber Amosite E = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-ldentified Actinolite MSO = No Structures Detected

CITY_21MC100_002866634

NYC-WTC_000212472