NYC-WTC_000229212

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volame/liters): 1832 Lab Group #: 7988 Filter Type/pater Area: MCE 385 mm= Lab Sample #: 16 Grid Opening Size: 0.01124 Client Sample #: 18 Area Examined: 0.04496 GRID BOX: Magnification: 20,000 GRID IP: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Pate: 6/6/02

Analysis Performed By: MARK PE YSAKHO V

i GO. Structure Structure Type Lengtti IDofSPuctoe Norv eos No (Nooadb F b; C M >=05 M >=5p Chrys Amphibole Nonssb Amcg/ND Elements) No Coord

■g- crp* a

Struct “ > 0.5p > 5; I Aspect Ratio Grid aoceptancs; •J- Positive diffraction pattent properties conforming to <50% undissotved fitter, overlapped or folded taboratory Identfficainn criterte observed <10% partculatB coverage >5C% coverage ate least 20 unfolded orovertepped grid squares <5% F B C M >5p >/= EOS spectrum conforming lo laboratory holes or opaque areas idenfiflcalion criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Croddolite Ambiguous C = Cluster (>3 (ntersectlcms( Anthqjhyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSO = No Structures Defected

CITY_21MC1OO_OOO491712 NYC-WTC_000229212