NYC-WTC_000212638

NYC 9/11 Public Portal Document

TEMAsI tos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7894 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 4 Grid Opening Size; 0.01124 Client Sample #: 04 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 5/29/02

Analysis Performed By: _ /J I \N PEYSAKHOV

GO. Structure Structure Type ■igth ID of Structure Norv EDS 1 No (Nonadb | F B C M >=5p Chrys Amphibole Nonasb Ambig/ND No Coord Elements) i ------------1 —i —1 1

d 1

J Struct = > 0.5p > 5:1 Aspect Ratio Grid accer; ■^= Positive diffraction pattern properties conforming to <50% u"? ter, overiapped or folded Totals laboratory identification criteria observed <10% par ■erage >50% coverage ate

EDS spectrum conforming to laboratory least 20 ir holes or, overlapped grid squares <5% ;S F B c M >5m idenfitication criteria observed Chrysotile AMI': Amphibole F = Single Fiber A- B = Bundle (<3 fibers <1 fiber diameter apart c. Ambiguous C = Cluster (>3 Intersections) An; Non-Asbestos M = Matrix Non-Identified NSD = No Structures Detected

CITY_21MC100_002867428

NYC-WTC_000212638