NYC-WTC_000219539

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group 6942 Filter Type ./ Filter Area: MCE 385 mnr Lab Sample #: 7 Grid Opening Size: 0.01124

Client Sample #: 09 Area Examined: 0 04496 mm-

GRID BOX: Ma«nif! cation: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3 6/02

Analysis Performed By: MARK PEYSAKHOV

GO Structure Structure Type Length | ID of Structure N or v No F 8 C M >=05 M >=5fj 5 Chrys Amphiooie NonasO T Ambig/ND ‘ No Coord <5u Etementsi ------------- i---------------- r

a

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: N- Positive diffraction pattern properties conforming to <50% undissolued filter, overlapped or folded Totals laboratory idenliOcation critena observed <10% paniculate coverage >50% coverage ate teas! 20 unfolded or overlapped grid squares <5% : F ! B ' C ■ M s/= EDS spectrum conforming to laboratory holes or opaque areas ideniification criteria observed Chrysotile AMPHIBOLES Amphibole r = Single Fiber Amosite Ambiguous B = Sunale (<3 fibers <1 liber oiameier apart Crociaolite C = Cluster >2 intersections I Anthophyllite i \oii-.Asbestos Tremolite M = Matrix i Noii-Ideiitificd Actinolite NSC = No Siructures Oeiecied

CITY_21MC100_002881245

NYC-WTC_000219539