NYC-WTC_000224823

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1920 f Lab Group #: 7352 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 1 Grid Opening Size: 0.01124

Client Sample #: 01 Area Examined: 0.04496 mm-

GRID BOzX: Magnification: 20,000 GRID ID. Accelerating Voltage: 100 KeV- ■ ■ # Grid Openings: 4 Analysis Date: 4/7/02

Analysis Performed Bv: MICHAEL GORYCKI

Structure Structure Type Length ID of Structure Nor 7 EDS GO. (Nonadb No F B C M >-05 M >=5|j Chrys Amphibole Nonasb Ambig/ND No Coord <5u Elements)

'2^" aZS£ •f J 7

Struct = > 0,5p. >5:1 Aspect Ratio Grid acceptance: y= Positive diffraction pattern properties conforming to <50% undissobed filter, overfapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M j >5p y= EDS spectrum conforming to laboratory boles or opaque areas Identification criieria observeo Chrysotile A.MPHiBOLES Amphibole F = Single Fiber Amosite ■Ambiguous I S = Bundle (<3 libers <1 fiber diameter apart Crocidolite I C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos M = Matrix Tremolite Actinolite Non-Identified j NSD = No Structures Detected

CITY_21MC100_002894689

NYC-WTC_000224823